Toru MASUZAWAProfessor for Academic Advancement

■Researcher basic information

Organization

  • Vice President
  • College of Engineering Department of Mechanical Systems Engineering
  • Graduate School of Science and Engineering(Master's Program) Major in Mechanical Systems Engineering
  • Graduate School of Science and Engineerin(Doctoral Program) Major in Complex Systems Science
  • Faculty of Applied Science and Engineering Domain of Mechanical Systems Engineering

Research Areas

  • Informatics, Mechanics and mechatronics, Mechanics and Control Engineering
  • Life sciences, Medical systems, Medical Systems
  • Informatics, Mechanics and mechatronics, Magnetic Bearings
  • Informatics, Mechanics and mechatronics, Magnetically suspended motor
  • Life sciences, Medical systems, Bio-Mechatronics
  • Life sciences, Biomedical engineering, Biomedical Engineering
  • Life sciences, Biomaterials, Biomedical Engineering

Research Keyword

  • Biomedical Engineering, Bio-mechatronics, Magnetically suspended motor, Magnetic bearing, Medical systems, Mechanics and Control Engineering

SDGs related to your own research

Degree

  • 1991年3月 工学博士(東京電機大学)
  • 1984年03月 工学修士(東京電機大学)

Educational Background

  • 1987, Tokyo Denki University, Graduate School, Division of Science and Engineering, 応用システム工学専攻
  • 1982, Tokyo Denki University, Faculty of Engineering, 精密機械工学科

Career

  • Apr. 2002, Professor, Dept. of Mechanical Engineering, Ibaraki University
  • Apr. 1998 - Mar. 2002, Associate Professor, Dept. of Mechanical Engineering, Ibaraki University
  • Apr. 1996 - Mar. 1998, Devision Head, Dept. of Artificial Organs, National Cardiovascular Center Research Institute
  • Apr. 1990 - Mar. 1996, Research Associate, National Cardiovascular Center Research Institute
  • Apr. 1987 - Mar. 1988, Research Associate, The University of Tokyo

Member History

  • Oct. 2023 - Present, 監事, 日本人工臓器学会
  • Nov. 2021 - Present, Councilor, Councilor of the Asia-Pacific Society for Artificial Organs
  • Jun. 2004 - Present, 理事, ライフサポート学会
  • May 2000 - Present, 評議員, 日本人工臓器学会
  • 1996 - Present, 「生体流体工学研究会」幹事, ライフサポート学会
  • Jun. 2022 - May 2024, 理事長, 日本AEM学会
  • Jun. 2022 - Nov. 2023, President, President of the International Society for Mechanical Circulatory Support
  • Oct. 2021 - Oct. 2023, Vice President, Vice President of the Japanese Society for Artificial Organs
  • Oct. 2009 - Oct. 2023, 理事, 日本人工臓器学会
  • Apr. 2012 - May 2022, 表彰委員長, 日本AEM学会 表彰委員長
  • Nov. 2013 - Oct. 2021, Secretary General, the Asia-Pacific Society for Artificial Organs, Secretary General
  • Jun. 2014 - May 2020, Board Member, International Federation for Artificial Organs
  • Apr. 2014 - Mar. 2020, 連携会員, 日本学術会議
  • Apr. 2011 - Mar. 2020, J-MACS有害事象判定委員会 委員, 医薬品医療機器総合機構
  • 01 Jan. 2018 - 31 Dec. 2019, PRESIDENT, International Federation for Artificial Organs
  • Jan. 2018 - Dec. 2019, PRESIDENT, International Federation for Artificial Organs
  • Oct. 2015 - Sep. 2018, 監事, Japanese Society for Artificial Organs
  • 01 Jun. 2016 - 31 May 2018, 副理事長, International Federation for Artificial Organs
  • Jun. 2016 - May 2018, VICE PRESIDENT, International Federation for Artificial Organs
  • Jan. 2016 - Dec. 2017, Vice President, International Federation for Artificial Organs
  • Nov. 2015 - Nov. 2017, 監事, 日本人工臓器学会 監事
  • Apr. 2015 - Mar. 2017, 学会長, ライフサポート学会
  • Apr. 2014 - Mar. 2016, NEDO 小型患者用補助人工心臓プロジェクト 開発委員会, NEDO
  • Jun. 2014 - Dec. 2015, Board member, International Federation for Artificial Organs , Board member
  • Nov. 2013 - Nov. 2015, 副理事長, 日本人工臓器学会 副理事長
  • Oct. 2013 - Sep. 2015, 副理事長, 日本人工臓器学会
  • Apr. 2012 - Mar. 2015, 医薬品医療機器総合機構専門委員, 医薬品医療機器総合機構
  • Apr. 2011 - Mar. 2014, 専門別研究会会長「医用アクチュエーション研究会」, 日本生体医工学会
  • 28 Sep. 2013, 事務局長, アジア太平洋人工臓器学会
  • Sep. 2013, The Secretary-General, Asia-Pacific Society for Artificial Organs
  • Apr. 2012 - Mar. 2013, 磁気浮上技術調査専門委員会委員, 電気学会 磁気浮上技術調査専門委員会委員
  • 2011, 選奨部会部会長, ライフサポート学会
  • 2009, 国際担当理事, 日本人工臓器学会
  • Apr. 2008, 関東支部商議員, 日本機械学会
  • 2008, 理事, The Japan Society of Applied Electromagnetics and Mechanics
  • Apr. 2005 - 2007, 第48回日本生体医工学会大会プログラム委員長, 日本生体医工学会
  • Jun. 2003 - 2006, 評議員, 日本生活支援工学会
  • 2005, 理事, International Society for Rotary Blood Pump
  • 2005, リニアドライブ研究会 協同研究委員会 委員長, 電気学会
  • Dec. 2001 - Mar. 2003, 78期 機械学会・運営委員、 代議員, 日本機械学会
  • 1999 - 2002, プログラム委員, ライフサポート学会
  • 2001, 第79期 機械力学・計測制御部門 運営委員会、代議委員, 日本機械学会
  • 2001, 編集委員会委員, 日本人工臓器学会
  • 2000, 第38回日本人工臓器学会大会 プログラム委員, 日本人工臓器学会
  • Apr. 1999, 代議員, 日本生体医工学会
  • 1997, リニアドライブ研究会 協同研究委員会 各幹事, 電気学会

Message from Researchers

  • (Message from Researchers)

    (研究経歴)
    From 1987 From 1987 to 1988, I was a research assistant of department of precision mechanical engineering at the University of Tokyo, Tokyo, Japan. From 1990 to 1997, I was an research associate and a division head of department of artificial organs at National Cardiovascular Center Research Institute, Osaka, Japan. From 1998, I moved to Ibaraki University and I am currently a Professor of mechanical engineering at Ibaraki University in Hitachi, Japan.

■Research activity information

Award

  • Dec. 2021, 日本AEM学会技術賞, 小児用人工心臓のための超小型磁気浮上モータの改良, 日本AEM学会
    Toru Masuzawa;Masahiro Osa
    Japan society
  • 20 Oct. 2018, 日本AEM学会論文賞, JAPAN, The Japan Society of Applied Electromagnetics and Mechanics
    増澤徹;長真啓
    Official journal
  • Oct. 2018, 日本AEM学会論文賞, ダブルステータ型アキシャルギャップ磁気浮上モータの5軸制御方式を活用した小児用人工心臓循環補助時の外乱力推定と磁気浮上特性評価, The Japan Society of Applied Electromagnetics and Mechanics
    増澤徹,長真啓
    Official journal
  • 26 Oct. 2017, 日本AEM学会論文賞, ラジアル型セルフベアリングモータにおける受動安定性の簡易推定式の検討, 日本AEM学会
    増澤徹;小沼弘幸;村上倫子
    Japan society
  • Oct. 2017, 日本AEM学会論文賞, ラジアル型セルフベアリングモータにおける受動安定性の簡易推定式の検討, 日本AEM学会
    増澤徹,小沼弘幸.村上倫子
    Japan society
  • Sep. 2013, Japanese Society for Artificial Organs Best Paper Award in 2013, Effect of metal surface characteristics on the adhesion performance of the integrated low-level energies method of adhesion, Japanese Society for Artificial Organs
    Aodai T;Masuzawa T;Ozeki H;Kishida A;Higami T
  • Nov. 2011, 平成23年度日本AEM学会技術賞, 治療用人工心臓のためのアキシャル型磁気浮上モータの開発,日本AEM学会誌Vol.19,No.2,2011, 日本AEM学会
  • Oct. 2011, 平成23年度茨城大学学長学術表彰優秀賞, 国立大学法人茨城大学
  • Nov. 2010, Japanese Society for Artificial Organs Best Paper Award in 2010, Estimation of changes in dynamic hydraulic force in a magnetically suspended centrifugal blood pump with transient computational fluid dynamics analysis, Japanese Society for Artificial Organs
    Masuzawa T;Ohta A;Tanaka N;Qian Y;Tsukiya T
  • Nov. 2009, 日本AEM学会功労賞, 日本AEM学会
    増澤徹
  • Nov. 2009, Japanese Society for Artificial Organs SAITO AWARD 2008, Estimation of changes in dynamic hydraulic force in a magnetically suspended centrifugal blood pump with transient computational fluid dynamics analysis, Japanese Society for Artificial Organs
    Toru Masuzawa
  • Nov. 2007, The International Society for Rotary Blood Pumps (ISRBP) Poster Award, Transient CFD analysis for a maglev centrifugal pump, The International Society for Rotary Blood Pumps (ISRBP)
    Masuzawa T;Ohta A;Tanaka N;Qian Y;Tsukiya T
  • Oct. 2007, ライフサポート学会論文賞, Development of a novel hybrid type magnetic bearing and application to small impeller centrifugal pump for artificial hearts, ライフサポート学会
    Saito T;Masuzawa T;Nakayama N
  • 2006, 日本人工臓器学会論文賞
  • 2006, ベストCFDグラフィック・アワード
  • 2003, ライフサポート学会論文賞
  • 2001, 日本人工臓器学会論文賞
  • 2000, 東京電機大学ME会第13回高橋賞
  • 1996, 日本機械学会設計工学・システム部門ラピッドプロトタイピングコンテストアイデア賞
  • 1993, 第21回人工心臓と補助循環懇話会 若手研究者最優秀賞
  • 1992, 第20回人工心臓と補助循環懇話会 若手研究者最優秀賞
  • 1991, 日本エム・イー学会論文賞

Paper

  • 〔Major achievements〕Homopolar magnetically levitated motor for implantable total articial heart               
    鈴木修太、増澤徹、川口哲平、長真啓、北山文矢, Corresponding, 日本AEM学会
    日本AEM学会誌, 01 Feb. 2024, [Reviewed]
  • 〔Major achievements〕Flow Rate Estimation of a Centrifugal Blood Pump Using the Balance of Control Currents,Through the Electromagnets in the Magnetic Bearing
    Shuya SHIDA; Toru MASUZAWA; Masahiro OSA; Yutaka SUZUKI, Last, the Japanese Society for Medical and Biological Engineering
    Advanced Biomedical Engineering, 20 Dec. 2023, [Reviewed]
  • 〔Major achievements〕Effects of biventricular shunt on pump,characteristics in a maglev total artificial,heart
    Shuya Shida; Kenichi Tsushima; Masahiro Osa; Daniel L Timms and Toru Masuzawa, Last, ESAO
    The International Journal of Artificial Organs, 04 Oct. 2023, [Reviewed]
  • 磁気浮上人工心臓のための制御周波数の検討               
    斎藤広明,増澤徹,長真啓,北山文矢, Corresponding, 日本AEM学会
    日本AEM学会誌, 14 Apr. 2023, [Reviewed]
  • 人工心臓のためのMR流体トルク伝達機構               
    北山文矢,増澤徹,長真啓,佐藤樹,菅原槙人, Corresponding, 日本AEM学会
    日本AEM学会誌, 14 Apr. 2023, [Reviewed]
  • 小児用補助人工心臓用5軸制御セルフベアリングモータの駆動系簡素化の検討               
    長真啓,増澤徹,北山文矢,西中知博,巽英介, 日本AEM学会
    日本AEM学会誌, 10 Feb. 2023, [Reviewed]
  • 〔Major achievements〕Radial Passive Stability Analysis of Magnetically Levitated Impeller Position for the Development of Flow Rate Estimations of a Ventricular Assist Device
    Shuya Shida; Toru Masuzawa; Masahiro Osa, Corresponding, 生体医工学会
    Advanced Biomedical Engineering, 11 Nov. 2022, [Reviewed]
  • 〔Major achievements〕Magnetic suspension performance and energy consumption characteristics of a maglev pediatric VAD using an ultra-compact axial gap type self-bearing motor with different number of actively controlled axes
    Toshihiro YAMASHITA; Toru MASUZAWA; Masahiro OSA; Eisuke TATSUMI; Tomohiro NISHINAKA, Corresponding, 掲載決定, 日本AEM学会
    日本AEM学会誌, 05 Aug. 2022, [Reviewed]
  • Dynamic motion analysis of impeller for the development of real-time flow rate estimations of a ventricular assist device
    Shuya Shida; Toru Masuzawa; Masahiro Osa, Corresponding, European Society for Artificial Organs
    The International Journal of Artificial Organs, 01 Jan. 2022, [Reviewed]
  • 〔Major achievements〕Double Stator Axial Gap Type Ultra-Compact 5-DOF Controlled Self-Bearing Motor for Rotary Pediatric Ventricular Assist Device
    Masahiro Osa; Toru Masuzawa; Kiyoshi Yamaguchi; Eisuke Tatsumi, Corresponding, Accepted, IEEE
    IEEE Transactions on Industry Applications, 16 Aug. 2021, [Reviewed]
  • EVALUATION OF DOWNSIZING AND SUSTAINABILITY OF WATER DISTRIBUTION NETWORK IN A MIDDLE SIZED-CITY
    藤田 昌史、桑原 祐史、小林 薫 、増澤 徹, 土木学会
    土木学会論文集, 16 Jul. 2021, [Reviewed]
  • Self-Connecting Inflow Cannula to Support Implantation of Ventricular Assist Device               
    Naoki Yoshida; Toru Masuzawa; Masahiro Osa; Kazuhide Ozeki; Akio Kishida; Tomonori Tsukiya; Toshihide Mizuno; Tomohiro Nishinaka; Eisuke Tatsumi, Corresponding, The Society of Life Support Engineering
    Life Support, 08 Jul. 2021, [Reviewed]
  • Evaluation of Acceleration Resistance of Homopolar Type Magnetic Bearing for Ventricular Assist Device
    Yuto Ueda; Toru Masuzawa; Masahiro Osa, Corresponding
    Journal of JSAEM, 12 May 2021, [Reviewed]
  • Evaluation of Energy Saving on the Axial Maglev Motor for Pediatric Ventricular Assist Device
    Kiyoshi Yamaguchi; Toru Masuzawa; Masahiro Osa; Eisuke Tatsumi, Corresponding, 日本AEM学会
    Journal of JSAEM, 12 May 2021, [Reviewed]
  • Effects of gravity on flow rate estimations of a centrifugal blood pump using the eccentric position of a levitated impeller
    Shuya Shida; Toru Masuzawa; Masahiro Osa, Corresponding, European Society for Artificial Organs
    The International Journal of Artificial Organs, 11 May 2020, [Reviewed]
  • Vessels anastomosis supporting device for coronary artery bypass grafting               
    Yosuke Haneda; Toru Masuzawa; Masahiro Osa; Kazuhide Ozeki; Akio Kishida; Eisuke Tatsumi, Corresponding, ライフサポート学会
    ライフサポート, Oct. 2019, [Reviewed]
  • Characterizing A Compact 5-DOF controlled Self-Bearing Motor with Modified Magnetic Circuit to Improve Suspension Performance for Pediatric VAD               
    Masahiro OSA; Toru MASUZAWA; Ryoga ORIHARA; Eisuke TATSUMI, Corresponding, JSAEM
    Journal of JSAEM, 01 Jul. 2019, [Reviewed]
  • 小児用人工心臓のための超小型磁気浮上モータの改良
    織原涼雅; 増澤徹; 長真啓; 巽英介, Corresponding, 日本AEM学会
    Journal of JSAEM, Jun. 2019, [Reviewed]
  • Improvement of right centrifugal pump using computer fluid dynamics analysis for flow balance regulation of total artificial heart
    Tomoyasu Makida; Toru Masuzawa; Shuya Shida; Masahiro Osa; Daniel L Timms, Corresponding, The Society of Life Support Engineering
    LIFE SUPPORT, Jun. 2019, [Reviewed]
  • A Double-Sided Stator Type Axial Bearingless Motor Development for Total Artificial Heart
    Nobuyuki Kurita; Takeo Ishikawa; Naoki Saito; Toru Masuzawa; Daniel Lee Timms, Institute of Electrical and Electronics Engineers Inc.
    IEEE Transactions on Industry Applications, 01 Mar. 2019
  • Flow rate estimation of a centrifugal blood pump using the passively stabilized,eccentric position of a magnetically levitated impeller
    Shuya Shida; Toru Masuzawa; Masahiro Osa, Corresponding
    The International Journal of Artificial Organs, Feb. 2019, [Reviewed]
  • Consideration of introduction of a correlated double samping to a two-dimensional magnetic sensor and its noise suppresion
    Takayuki Kimura; Kouhei Yamane; Toru Masuzawa, Institute of Electrical Engineers of Japan
    IEEJ Transactions on Sensors and Micromachines, 2019
  • Magnetic suspension performance enhancement of ultra-compact 5-DOF controlled self-bearing motor for rotary pediatric ventricular assist device               
    Masahiro Osa; Toru Masuzawa; Ryoga Orihara; Eisuke Tatsumi, Corresponding, ISMB
    Proc. of the 16th ISMB, 01 Aug. 2018
  • 人工心臓への適用を目的とした4軸制御型磁気軸受の開発               
    小泉綾香; 増澤徹; 長真啓, Corresponding
    日本AEM学会誌, 10 Jun. 2018, [Reviewed]
  • 心拍同期型磁気浮上体外循環血液ポンプの径方向安定性評価               
    佐藤遼太; 増澤徹; 長真啓; 大野康平; 西村隆; 許俊鋭, Corresponding
    日本AEM学会誌, 10 Jun. 2018, [Reviewed]
  • 全置換型磁気浮上人工心臓への反発型永久磁石磁気軸受の組み込み               
    牧田丈靖; 増澤徹; 國府田芳彰; 長真啓; Daniel L TIMMS, Corresponding, 日本AEM学会
    日本AEM学会誌, Jun. 2018, [Reviewed]
  • ダブルステータ型アキシャルギャップ磁気浮上モータの5軸制御方式を活用した小児用人工心臓循環補助時の外乱力推定と磁気浮上特性評価               
    長真啓; 増澤徹; 斎藤拓也; 巽英介, Corresponding, 日本AEM学会
    日本AEM学会誌, 10 Mar. 2018, [Reviewed]
  • 薄小型補助人工心臓用セルフベアリングモータの改良               
    村上倫子; 増澤徹; 小沼弘幸; 西村隆; 許俊鋭, Corresponding, 日本AEM学会
    日本AEM学会誌, 10 Mar. 2018, [Reviewed]
  • Motor design and impeller suspension
    Toru Masuzawa; Masahiro Osa; Martin Mapley, Elsevier Inc.
    Mechanical Circulatory and Respiratory Support, 2018
  • Analysis of the effect of the size of three-dimensional micro-geometric structures on physical adhesion phenomena using microprint technique               
    Akiko Oota-Ishigaki; Toru Masuzawa; Kazuaki Nagayama, Corresponding
    The International Journal of Artificial Organs, 2018, [Reviewed]
  • Effects of eccentric impeller position on radial passive stability in a magnetically levitated centrifugal blood pump with a double volute
    Shuya Shida; Toru Masuzawa; Masahiro Osa; Ryota Sato, Japanese Society for Medical and Biological Engineering
    Advanced Biomedical Engineering, 2018, [Reviewed]
  • Magnetic levitation performance of miniaturized magnetically levitated motor with 5-DOF active control
    Masahiro Osa; Toru Masuzawa; Takuya Saito; Eisuke Tatsumi, Corresponding,

    Mechanical circulatory support (MCS) therapy plays a significant role in an alternative therapy of heart transplants for pediatric heart disease patients. However, continuous flow rotary MCS devices for pediatric patients are still undergoing development, and have not been clinically available technology. Technical difficulties, such as high durability, better blood compatibility and miniature device size, prevent the pediatric MCS devices development. In this study, a double stator axial gap maglev motor for pediatric MCS device has been developed. The maglev motor has two identical motor stators, and a levitated rotor impeller which is aligned between the stators. The levitated rotor impeller is fully suspended with 5-degrees of freedom (5-DOF) active control. A double stator mechanism enhances motor torque production. A miniaturized maglev motor was designed and developed based on FEM magnetic field analysis for use in implantable ventricular assist devices (VADs). The diameter and height of the developed maglev motor are 22 mm and 33 mm. This paper is an initial report on the magnetic levitation and rotation performance of the miniaturized maglev motor. The levitated rotor impeller was magnetically levitated and rotated with the 5-DOF active control. The oscillation amplitudes (x, y and z) and inclination angles (θx and θy) of the levitated rotor impeller were then evaluated in both air and water. The developed maglev motor achieved non-contact rotation up to 1600 rpm in air and 4500 rpm in water, respectively. The oscillation amplitudes and inclination angles were sufficiently suppressed in water due to fluid damping. After these experiments, a magnetic circuit of the maglev motor was modified in order to achieve further stable levitation. The developed maglev motor then indicated potential to achieve the practical use of maglev rotatory pediatric VAD.

    , JSME
    Mechanical Engineering Journal, 15 Oct. 2017, [Reviewed]
  • Magnetic levitation performance of miniaturized magnetically levitated motor with 5-DOF active control
    Masahiro Osa; Toru Masuzawa; Takuya Saito; Eisuke Tatsumi, Corresponding,

    Mechanical circulatory support (MCS) therapy plays a significant role in an alternative therapy of heart transplants for pediatric heart disease patients. However, continuous flow rotary MCS devices for pediatric patients are still undergoing development, and have not been clinically available technology. Technical difficulties, such as high durability, better blood compatibility and miniature device size, prevent the pediatric MCS devices development. In this study, a double stator axial gap maglev motor for pediatric MCS device has been developed. The maglev motor has two identical motor stators, and a levitated rotor impeller which is aligned between the stators. The levitated rotor impeller is fully suspended with 5-degrees of freedom (5-DOF) active control. A double stator mechanism enhances motor torque production. A miniaturized maglev motor was designed and developed based on FEM magnetic field analysis for use in implantable ventricular assist devices (VADs). The diameter and height of the developed maglev motor are 22 mm and 33 mm. This paper is an initial report on the magnetic levitation and rotation performance of the miniaturized maglev motor. The levitated rotor impeller was magnetically levitated and rotated with the 5-DOF active control. The oscillation amplitudes (x, y and z) and inclination angles (θx and θy) of the levitated rotor impeller were then evaluated in both air and water. The developed maglev motor achieved non-contact rotation up to 1600 rpm in air and 4500 rpm in water, respectively. The oscillation amplitudes and inclination angles were sufficiently suppressed in water due to fluid damping. After these experiments, a magnetic circuit of the maglev motor was modified in order to achieve further stable levitation. The developed maglev motor then indicated potential to achieve the practical use of maglev rotatory pediatric VAD.

    , JSME
    Mechanical Engineering Journal, 15 Oct. 2017, [Reviewed]
  • Development of a small magnetic levitated centrifugal blood pump using a radial type self-bearing motor and axial position change of rotor-impeller by rotational magnetic field
    Hiroyuki Onuma; Toru Masuzawa; Michiko Murakami, Last,

    A small magnetic levitated centrifugal blood pump using a radial type self-bearing motor has been developed for use as an implantable artificial heart. In order to realize an implantable blood pump for a small adult patient, miniaturization and high efficiency of the device are necessary. In this study, a radial type self-bearing motor which is small-diameter and thin was developed, and the axial position change of the rotor-impeller by the rotational magnetic field was proposed. Magnetic suspension characteristics and motor performance were compared the center axial position of the rotor with the displaced axial position of the rotor. Additionally, a magnetic levitated centrifugal blood pump using the self-bearing motor was developed, and pump performance and levitation performance were measured. The magnetic suspension performance in the radial direction was enough ability to control the radial position of the rotor. The magnetic suspension force in the radial direction decreased by displacing the axial position of the rotor. The passive stability performance in the axial direction was enough ability to suspend the rotor. The restoring force was possible to be varied by the rotation magnetic field. The motor performance decreased by shifting the phase angle of the rotational magnetic field from 90 degrees and displacing the axial position of the rotor. At the operating condition with a flow rate of 5 L/min against a pressure of 100 mm Hg, the oscillation amplitude in x, y, z direction were 0.014 mm, 0.014 mm and 0.039 mm, respectively. And, the total power consumption was 7.1 W. The developed magnetic levitated centrifugal blood pump has demonstrated sufficient levitation performance and low total power consumption. The average displacement in z direction of the rotor-impeller was possible to change by changing the phase angle of the rotational magnetic field. By decreasing the phase angle from 90 degrees in range of from 60 degrees to 90 degrees, it is possible to improve the levitation performance with just a little increases the total power consumption.

    , JSME
    Mechanical Engineering Journal, 15 Oct. 2017, [Reviewed]
  • Compact Maglev Motor with Full DOF Active Control for Miniaturized Rotary Blood Pumps               
    Masahiro Osa; Toru Masuzawa; Ryoga Orihara; Eisuke Tatsumi, LDIA2017
    Proc. of LDIA2017, 01 Sep. 2017
  • 作動流体粘度が磁気浮上補助人工心臓のポンプ特性およびインペラ浮上性能に与える影響
    村上倫子; 増澤徹; 小沼弘幸; 西村隆; 許俊鋭, Corresponding, ライフサポート学会
    ライフサポート学会誌, 31 Aug. 2017, [Reviewed]
  • 超小型磁気浮上式小児用人工心臓の開発
    斎藤拓也; 増澤徹; 長真啓; 巽英介, Corresponding,

    A 5-degrees of freedom (5-DOF) controlled maglev motor and a centrifugal blood pump have been developed for pediatric ventricular assist devices (VADs). The magnetically suspended pediatric VAD consists of a top stator, a bottom stator and a levitated impeller. A double stator mechanism enhances a torque production. The maglev pediatric VAD has an outer diameter of 22 mm, a total length of 34 mm and a total volume of 18 cc. In this study the pump performance of the developed centrifugal pump was investigated, as well as the magnetic suspension ability of the developed 5-DOF controlled self-bearing motor was evaluated. The developed maglev pediatric VAD produced a flow rate up to 2.5 L/min against a pump head pressure of 100 mmHg at an impeller rotating speed of 5000 rpm. The maximum oscillation amplitudes that were 0.08 mm in axial direction and 0.19 mm in radial direction were less than the clearance of the centrifugal blood pump.

    , The Japan Society of Applied Electromagnetics and Mechanics
    日本AEM学会誌, 10 Jul. 2017, [Reviewed]
  • 全置換型磁気浮上人工心臓のための反発型磁気軸受の検討
    國府田芳彰; 増澤徹; 長真啓; Dniel L Timms, Corresponding,

    We have developed a magnetically levitated total artificial heart. The stator of the device has a magnetic bearing and a motor stator set at center of the device. The left and right impellers are connected by a shaft through the center hall of the stator core. The axial position and tilting of the levitated impeller are controlled by the magnetic bearing. The radial displacement of the impeller is supported with a passive stability. We propose the application of a repulsive passive permanent magnetic bearing, PMB, for improvement of the radial stiffness of the device. A magnetic field analysis with finite element method was performed to investigate a suitable PMB. As a result, the PMB which has two radially magnetized outer permanent magnets and an axial magnetized inner permanent magnet has better performance and the radial stiffness increased up to 2.5 times of passive stability's one.

    , The Japan Society of Applied Electromagnetics and Mechanics
    日本AEM学会誌, 10 Jul. 2017, [Reviewed]
  • The motion of levitated impeller at maglev cascade pump for thin ventricular assist device
    村上倫子; 増澤徹; 小沼弘幸; 西村隆; 許俊鋭, Corresponding, ライフサポート学会
    ライフサポート学会誌, 30 Jun. 2017, [Reviewed]
  • Effect of flow around three-dimensional micro-geometric structures on adhesion phenomena
    Akiko Oota-Ishigaki; Toru Masuzawa; Takayuki Shibata, Corresponding, ライフサポート学会
    ライフサポート学会誌, 30 Jun. 2017, [Reviewed]
  • Magnetically suspended motor system applied to artificial hearts and blood pumps
    Toru Masuzawa
    PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART I-JOURNAL OF SYSTEMS AND CONTROL ENGINEERING, May 2017, [Reviewed]
  • 心拍同期型磁気浮上血液ポンプにおける受動安定軸の浮上安定性評価               
    下堀拓己; 増澤徹; 西村隆; 許俊鋭, Corresponding, 日本AEM学会
    日本AEM学会誌, 10 Sep. 2016, [Reviewed]
  • ラジアル型セルフベアリングモータにおける受動安定性の簡易推定式の検討               
    小沼弘幸; 増澤徹; 村上倫子, Corresponding
    日本AEM学会誌, 10 Sep. 2016, [Reviewed]
  • Development of radial type self-bearing motor for small centrifugal blood pump               
    Hiroyuki ONUMA; Toru MASUZAWA and Michiko MURAKAMI, Corresponding
    15th International Symposium on Magnetic Bearings, 03 Aug. 2016, [Reviewed]
  • Thermal denaturation behavior of collagen fibrils in wet and dry environment
    Yosuke Suwa; Kwangwoo Nam; Kazuhide Ozeki; Tsuyoshi Kimura; Akio Kishida; Toru Masuzawa
    JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS, Apr. 2016, [Reviewed]
  • Improvement of maglev cascade pump for a ventricular assist device toward practical use
    Watanabe Yasuaki; Masuzawa Toru; Murakami Michiko; Onuma Hiroyuki; Nishimura Takashi; Kyo Shunei,

    A maglev ventricular assist device implanted under the thorax muscle layer has been developed for mild heart disease patients. A radial gap maglev motor and a cascade pump are adopted to make the device thinner. The design of the device was modified to improve pump performance and anatomical fitting using a computational fluid dynamic analysis. A motor diameter is enlarged from 30 mm to 35 mm to improve motor performance. An inlet port was bent toward a ventricular side with an angle of 30 degrees for better fitting. An angle between the inlet and outlet ports was adjusted to 60 degrees. The CFD simulation indicates higher pressure production performance by 30 % of a previous device without any negative effect with the bending port. The pump can produce a sufficient flow rate of 2 L/min against a head pressure with a rotating speed of 1800.

    , Japanese Society for Medical and Biological Engineering
    Transactions of Japanese Society for Medical and Biological Engineering, 2016
  • Miniaturizing 5-DOF fully controlled axial gap maglev motor for pediatric ventricular assist devices
    Masahiro Osa; Toru Masuzawa; Takuya Saito; Eisuke Tatsumi
    INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS, 2016, [Reviewed]
  • A double sided stator type axial self-bearing motor development for left ventricular assist devices
    Nobuyuki Kurita; Takeo Ishikawa; Naoki Saito; Toru Masuzawa
    INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS, 2016, [Reviewed]
  • Radial position active control of double stator axial gap self-bearing motor for pediatric VAD               
    Masahiro Osa; Toru Masuzawa; Naoki Omori; Eisuke Tatsumi, Corresponding
    Mechanical Engineering Journal, 15 Aug. 2015, [Reviewed]
  • IPM型5軸制御セルフベアリングモータの小型化とコギングトルク特性改善に関する研究
    松田健一; 熊谷渉; 近藤良; 増澤徹, Last, 5-DOF self-bearing motor possesses the functions of a motor, two radial active magnetic bearings (AMBs), and an axial AMB. It is possible to downsize the AMB system while still maintaining a high level of support performance. In a 5-DOF self-bearing motor, the IPM rotor generates bias fluxes in not only the radial direction but also in the axial and tilt directions without any side surface permanent magnets. However, cogging torques are inherently generates by the magnetic flux flow in a IPM rotor. The proposed flux recovery-type permanent magnets configuration was analyzed using the 3-dimensional finite element method. The results show a significant reduction of the cogging torques and an improvement to motor efficiency., The Japan Society of Mechanical Engineers
    日本機械学会論文集, 18 Jun. 2015, [Reviewed]
  • 磁気浮上型心臓治療用血液ポンプへのセンサレスモータ制御の適用               
    大森直樹; 増澤徹; 長真啓; 下堀拓己; 西村隆; 許俊鋭, Corresponding
    日本AEM学会誌, 10 Jun. 2015, [Reviewed]
  • 薄小型磁気浮上補助人工心臓における浮上インペラの受動安定軸の変動計測               
    吉田翔一; 増澤徹; 村上倫子; 小沼弘幸; 西村隆; 許俊鋭, Corresponding
    日本AEM学会誌, 10 Jun. 2015, [Reviewed]
  • Size-reduced two-dimensional integrated magnetic sensor fabricated in 0.18μm CMOS process
    Takayuki Kimura; Kazuya Uno; Toru Masuzawa, Last
    IEEJ Trans, May 2015, [Reviewed]
  • 全置換型磁気浮上人工心臓と流量バランス制御
    山田悠; 増澤徹; Daniel L TImms, Corresponding, An innovative Bi-Ventricular Artificial Heart (IB-Heart) has been successfully developed with a single magnetically suspended motor. The device has auto flow regulation function which reacts to atrial pressure change in order to balance the flow rate of left and right pump. The zero power control is adopted to control axial position of levitated impeller in the IB-Heart. The rate of change of the axial position of the impeller on the atrial pressure change is the key factor of this devices flow regulation function since the flow rate of the pumps is regulated with axial position changing of the levitated impeller. The flow regulating ability of the IB-Heart and the relationship between the rod cross-sectional area and the flow regulation function was investigated. The maglev motor was redesigned with 3-D magnetic field analysis to improve the flow regulation function., The Japan Society of Applied Electromagnetics and Mechanics
    日本AEM学会誌, 10 Mar. 2015, [Reviewed]
  • 小児用補助人工心臓のための小型磁気浮上モータの第一試作
    大森直樹; 増澤徹; 長真啓; 巽英介, Corresponding, A miniaturized magnetically levitated motor which can actively control 5-degrees of freedom (5-DOF) of impeller postures has been newly developed for a paediatric ventricular assist device (VAD). Developed motor consists of a top stator, a bottom stator and a levitated impeller that is set between the both stators. The diameter and the height of the motor are 28 mm and 41 mm, respectively. Magnetic field analysis with finite element method was performed in order to design the geometry of motor permanent magnets and a stator. Corners of the motor permanent magnets were cut to produce sinusoidal distribution of magnetic flux density and to reduce the cogging torque. The developed maglev motor produces sufficient suspension force and rotates the levitated impeller up to a rotating speed of 6000 rpm with sufficient posture control performance., The Japan Society of Applied Electromagnetics and Mechanics
    日本AEM学会誌, 10 Mar. 2015, [Reviewed]
  • 磁気ビーズを用いた磁気励振細胞刺激システム
    増澤 徹; 服部圭介; 林照剛; 木村剛; 岸田晶夫, Lead, We have been investigating the mechanical cell stimulation because it has the possibility to enhance cell function without any chemical and biological material. In this paper, a newly developed cell stimulation system using magnetic beads attached on the cell wall is presented. The magnetic beads are attached on cultured cells in advance and an alternating magnetic field produced by the electric magnet is exposed onto the cells attached the magnetic beads. The beads are vibrated with the magnetic field and the cell wall received the vibration stimulation. Basic performance of the stimulation system is evaluated in this paper. The system can produce an attractive force of 30 pN onto the beads and can vibrate the beads up to a vibration frequency of 80 Hz with an oscillation amplitude of 450 nanometers. The vibration of the magnetic beads on the cultured cells with a vibration frequency of 10 Hz was observed successfully with human mesenchymal stem cells., The Japan Society of Applied Electromagnetics and Mechanics
    日本AEM学会誌, 10 Mar. 2015, [Reviewed]
  • 回転数周期的変動時の磁気浮上型血液ポンプの浮上安定性と溶血性能の検討
    増澤徹; 山口聡史; 下堀拓己; 西村隆; 許俊鋭, Lead, A novel blood pump with magnetically levitated impeller has been developed to recover cardiac function of acute heart failure patients. The pump assists patients heart and the impellers rotational speed are changed based on synchronizing with heart beat in order to increase coronary flow of patients heart. Impeller levitation stability of the pump operated in pulsatile mode was evaluated with a mock circuit filled with water. In the pulsatile mode, the rotational speed was changed from 800 rpm to 1800 rpm with a beat rate of 60 bpm. Maximum axial displacement of the impeller is 22 % of the blood gap between the impeller and casing. Characteristics of hemolysis of the pump were examined within in-vitro hemolysis tests. NIH value of the maglev pump is about half time of it of a commercial based extracorporeal pump in constant speed operation. Even NIH value operated in the pulsatile mode is about two times of the commercial based pumps one and it is acceptable range for clinical usage. The developed maglev pump indicates sufficient impeller levitation stability and hemolysis property., The Japan Society of Applied Electromagnetics and Mechanics
    日本AEM学会誌, 10 Mar. 2015, [Reviewed]
  • Effect of incorporation of deuterium on vacancy-type defects of a-C:H films prepared by plasma CVD               
    K.Ozeki; D.Sekida; A.Uedono; K.K.Hirakuri; T.Masuzawa, Last
    Applied Surface Science, 03 Jan. 2015, [Reviewed]
  • Pediatric VAD with Five Degrees of Freedom Control MAGLEV Motor               
    T. Masuzawa; M. Osa; N. Omori; E. Tatsumi
    41st Annual European Society for Artificial Organs (ESAO) Congress, 17 Sep. 2014, [Invited]
  • The relationship between the thrombogenicity and the generated flow around 3-dimensional micro geometrical structures on the bio-material -Investigation of micro flow-               
    Ota-Ishigaki A; Masuzawa T; Shibata T; Kawashima T; Maruyama O
    The 10th International Student Conference at Ibaraki University, 15 Sep. 2014
  • Cadiovascular circulation simulator to evaluate ventricular assist effect               
    Kurosaki W; Masuzawa T
    The 10th International Student Conference at Ibaraki University, 15 Sep. 2014
  • アウターロータ型5軸制御セルフベアリングモータに関する研究               
    松田健一; 平根龍也; 近藤良; 増澤徹
    日本AEM学会誌, 10 Sep. 2014, [Reviewed]
  • Cascade pump for mechanical circulatory support
    Toru Masuzawa; Michiko Murakami, Japan Soc. of Med. Electronics and Biol. Engineering
    Transactions of Japanese Society for Medical and Biological Engineering, 17 Aug. 2014, [Reviewed]
  • Total artificial heart with a single maglev motor
    Toru Masuzawa; Daniel L. Timms, Japan Soc. of Med. Electronics and Biol. Engineering
    Transactions of Japanese Society for Medical and Biological Engineering, 17 Aug. 2014, [Reviewed]
  • Magnetically suspended motor system for artificial hearts and blood pumps               
    Masuzawa T
    14th International Symposium on Magnetic Bearings, 11 Aug. 2014, [Reviewed]
  • Optimization design of magnetically suspended system for the BiVACOR total artificial heart               
    Kurita N; Timm D; Greatrex N; Kleinheyer M; Masuzawa T
    14th International Symposium on Magnetic Bearings, 11 Aug. 2014, [Reviewed]
  • Radial Position Active Control of Double Stator Axial Gap Self-bearing Motor for Paediatric VAD               
    Osa M; Masuzawa T; Omori N; Tatsumi E
    14th International Symposium on Magnetic Bearings, 11 Aug. 2014, [Reviewed]
  • Thin Maglev Ventricular Assist Device with radial Type Self-bearing Motor               
    Murakamia M; Masuzawa T; Yoshida S; Onuma H; Nishimura T; Kyo S
    14th International Symposium on Magnetic Bearings, 11 Aug. 2014, [Reviewed]
  • Evaluation of Magnetic Suspension Characteristics and Levitation Performance of A Centrifugal Blood Pump Using Radial Type Self-Bearing Motor               
    Onuma H; Masuzawa T
    14th International Symposium on Magnetic Bearings, 11 Aug. 2014, [Reviewed]
  • Magnetically suspended artificial heart               
    Masuzawa T
    8th Asia-Pacific Symposium on Applied Electromagnetics and Mechanics 2014, 23 Jul. 2014, [Invited]
  • 小児用人工心臓のための小型5軸制御セルフベアリングモータ
    長真啓; 増澤徹; 大森直樹; 巽英介, 日本AEM学会
    日本AEM学会誌, 10 Jun. 2014, [Reviewed]
  • 12突極ラジアル型セルフベアリングモータの磁気支持特性の推定               
    小沼弘幸; 増澤徹
    日本AEM学会誌, 10 Jun. 2014, [Reviewed]
  • Pulsatile operation of the BiVACOR TAH - Motor design, control and hemodynamics
    Matthias Kleinheyer; Daniel L. Timms; Nicholas A. Greatrex; Toru Masuzawa; O. Howard Frazier; William E. Cohn
    2014 36TH ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY (EMBC), 2014, [Reviewed]
  • シングル磁気浮上モータ方式全人工心臓の開発
    西村宣彦; 増澤徹; ダニエルLティムス, A magnetically suspended total artificial heart has been developed with a single magnetically suspended motor. The device has double pumps to replace the function of the left and right ventricles. A stator which has both of a magnetic bearing core and a motor stator core is set at center of the device. The left and right pump impellers are connected with a rod through the center hall of the stator core. Attractive forces produced by the magnetic bearing and the motor are made balance to suspend the rotating impellers. Flow difference between the left and the right pump is regulated by changing the amount of the secondary flow through blood gap between impeller top edge and pump casing by shifting the impeller position axially. Flow rate of the left pump is changed 4.1∼6.7 L/min, flow rate of the right pump is changed 6.5∼7.4 L/min when axial position of the impeller is shifted by ±0.2 mm., The Japan Society of Applied Electromagnetics and Mechanics
    日本AEM学会誌, 10 Jun. 2013
  • Influence of the source gas ratio on the hydrogen and deuterium content of a-C:H and a-C:D films: Plasma-enhanced CVD with CH4/H-2, CH4/D-2, CD4/H-2 and CD4/D-2
    K. Ozeki; D. Sekiba; T. Suzuki; K. Kanda; M. Niibe; K. K. Hirakuri; T. Masuzawa
    APPLIED SURFACE SCIENCE, Jan. 2013, [Reviewed]
  • Phase Composition of Sputtered Film from a Mixture Target of Hydroxyapatite and Strontium-apatite
    Ozeki K; Hoshino T.; Aoki H; Masuzawa T
    Journal of Materials Science and Technology, 2013, [Reviewed]
  • Antithrombogenicity of Amorphous Deuterated Carbon Film Prepared by RF-plasma CVD               
    K. Ozeki; D. Sekiba; K.K. Hirakuri and T. Masuzawa
    Nano Biomedicine, 2013, [Reviewed]
  • The adsorptive behavior of albumin and lysozyme proteins on rod-shaped and plate-shaped hydroxyapatite
    K. Ozeki; T. Hoshino; H. Aoki and T. Masuzawa
    Bio-Med. Mat. Eng, 2013, [Reviewed]
  • Development of Cell Culture Microdevice Integrated with Piezoelectric Thin Film Actuator for On-Chip Regulation of Cell Functions
    Takahiro Kawashima; Yuhei Yamada; Yuuta Matsuzawa; Moeto Nagai; Takayuki Shibata; Toru Masuzawa; Tsuyoshi Kimura; and Akio Kishida
    Japanese Journal of Applied Physics, 04 Oct. 2012, [Reviewed]
  • スパッタリング法を用いたストロンチウムアパタイト薄膜の作製と骨芽細胞による評価
    星野智大; 尾関和秀; 後藤哲哉; 増澤徹; 青木秀希, バイオインテグレーション学会
    バイオインテグレーション学会, Aug. 2012, [Reviewed]
  • Effect of metal surface characteristics on the adhesion performance of the integrated low-level energies method of adhesion               
    Aodai T; Masuzawa T; Ozeki K; Kishida A; Higami T
    Journal of Artificial Organs, Aug. 2012, [Reviewed]
  • Development of Lorentz force type tilt control motor for rotary blood pumps               
    Ichinose T; Masuzawa T; Steinseifer U; Timms D
    日本AEM学会誌, Jun. 2012, [Reviewed]
  • A radial type self-bearing motor for small maglev regenerative blood pump               
    Ukita K; Masuzawa T; Onuma H; Nishimura T; Kyo S
    日本AEM学会誌, Jun. 2012, [Reviewed]
  • Miniaturized axial gap maglev motor with vector control for pediatric artificial heart               
    Osa M; Masuzawa T; Tatsumi E
    Journal of the Japan Society of Applied Electromagnetics and Mechanics, Jun. 2012, [Reviewed]
  • Development of Cell Culture Microdevice Actuated by Piezoelectric Thin Films for Delivering Mechanical Vibratory Stimuli to Cells
    Yuhei Yamada; Genki Umegaki; Takahiro. Kawashima; Moeto Nagai; Takayuki Shibata; Toru Masuzawa; Tsuyoshi Kimura; Akio Kishida
    Journal of Physics: Conference Series, Mar. 2012, [Reviewed]
  • 人工心臓のための12突極ラジアル型磁気浮上モータにおける最適極数の検討               
    小沼弘幸; 浮田啓悟; 増澤徹
    日本AEM 学会誌, Mar. 2012, [Reviewed]
  • 小型ローレンツ型磁気浮上モータのサーボモータ制御               
    岡田養二; 三好理文; 増澤徹; 榎園正人
    日本AEM 学会誌, Mar. 2012, [Reviewed]
  • Study on Permanent Magnet Arrangement for IPM Type 5-DOF Self-Bearing Motor
    MATSUDA Kenichi; KONDO Ryou; MASUZAWA Toru, The 5-DOF self-bearing motor possesses the functions of a motor, two radial AMBs, and an axial AMB. Therefore, it is possible to miniaturize the AMB system with maintaining high performance. In this paper, an interior permanent magnet (IPM) type 5-DOF self-bearing motor is proposed. The IPM rotor generates bias fluxes to not only the radial direction but also the overhanging stator direction without side surface permanent magnets. Optimum configuration of the permanent magnets is analyzed using 3 dimensional finite element method. The results show the feasibility of the more compact and highly-reliable 5-DOF self-bearing motor., The Japan Society of Mechanical Engineers
    TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A, 2012
  • 全人工心臓用アキシャル型磁気軸受の最適化に関する研究
    西村宣彦; 増澤徹; ダニエル L ティムス
    電気学会研究会資料リニアドライブ研究会LD-11-067~077, 24 Nov. 2011
  • Development of Lorentz force type tilt control motor for rotary blood pumps               
    Takannori Ichinose; Toru Masuzawa; Ulrich Steinseifer; Daniel Timms
    Proceedings of the 20th MAGDA Conference in Pacific Asia, 30-35, 2011.11.14, 14 Nov. 2011
  • Miniaturized axial gap maglev motor with vector control for pediatric artificial heart               
    Masahiro Osa; Toru Masuzawa; Eisuke Tatsumi
    Proceedings of the 20th MAGDA Conference in Pacific Asia, 14 Nov. 2011
  • BiVACORⓇ-A Magnetically levited biventricular artificial heart
    Daniel Timms; Nobuyuki Kurita; Nicholas Greatrex; Toru Masuzawa
    Proceedings of the 20th MAGDA Conference in Pacific Asia, 14 Nov. 2011
  • 完全人工心臓用カスケードポンプ(ACCEL PUMP)の左心用ポンプの評価               
    福長一義; 阿部裕輔; 山家智之; 巽英介; 増澤徹; 山根隆志; 妙中義之; 井街宏; 舟久保昭夫; 福井康裕
    人工臓器, Oct. 2011, [Reviewed]
  • 治療用人工心臓のためのアキシャル型磁気浮上モータの開発               
    北郷将史; 増澤徹; 西村隆; 許俊鋭
    日本AEM学会誌, Jul. 2011, [Reviewed]
  • 乳児用人工心臓用ダブルステータ型磁気浮上モータの開発               
    長真啓; 増澤徹; 巽 英介
    日本AEM学会誌, Jul. 2011, [Reviewed]
  • アウターロータ型5軸制御セルフベアリングモータの開発               
    松田 健一; 寺山 昌幸; 近藤 良; 増澤 徹
    日本機械学会論文集C編, 25 May 2011, [Reviewed]
  • Synthetic polymer-tissue adhesion using an ultrasonic scalpel
    Yamamoto K; Kimura T; Nam K; Funamoto S; Ito Y; Shiba K; Katoh A; Shimizu S; Kurita K; Higami T; Masuzawa T; Kishida A
    Surgical Endoscopy, Apr. 2011, [Reviewed]
  • Investigation of sensitivity of two-dimensional integrated magnetic sensor fabricated in sub-micron CMOS process
    Takayuki Kimura; Hitoshi Furuya; Toru Masuzawa
    Kyokai Joho Imeji Zasshi/Journal of the Institute of Image Information and Television Engineers, Mar. 2011
  • Effects of vibration on differentiation of cultured PC12 cells
    ItoY; KimuraT; NamKW; Kato A; Masuzawa T; Kishida A
    Biotechnology & Bioengineering., Mar. 2011, [Reviewed]
  • Deodorisation effect of diamond-like carbon/titanium dioxide multilayer thin films deposited onto polypropylene               
    K.Ozeki; K.K.Hirakuri; T.Masuzawa
    Applied Surface Science, Feb. 2011
  • サブミクロンプロセスで製造された2次元集積化磁気センサにおける感度特性に関する研究               
    木村孝之; 古谷仁; 増澤徹
    映像情報メディア学会誌, 2011, [Reviewed]
  • Nano-vibration effect on cell adhesion and its shape
    Yukiko Ito; Tsuyoshi Kimura; Yusuke Ago; Kwangwoo Nam; Kaori Hiraku; Kozo Miyazaki; Toru Masuzawa and Akio Kishida
    Bio-Medical Materials and Engineering, 2011, [Reviewed]
  • Feasibility Study of Cell Culture Microdevice actuated by Piezoelectric Thin Film for on-Chip Regulation of Cell Functions               
    Takahiro Kawashima; Takayuki Shibata; Moeto Nagai; Toru Masuzawa; Tsuyoshi Kimura and Akio Kishida
    Proc. of The 14th International Conference on Miniaturized Systems for Chemistry and Life Sciences (μTAS 2010), Oct. 2010, [Reviewed]
  • アウターロータ型5軸制御セルフベアリングモータの開発               
    松田健一; 寺山昌幸; 近藤良; 増澤徹
    日本機械学会[No.10-8]Dynamics and Design Conference 2010 CD-ROM論文集, 14 Sep. 2010
  • Development of Flux Concentrated type Self-Bearing Motor
    Okada Y; Kitagou K; Masuzawa T; Enokizono M, IFAC Secretariat
    5th IFAC Symposium on Mechatronic Systems, 13 Sep. 2010
  • Japanese guidance for ventricular assist devices/ total artificial hearts
    Yamane T; Kyo S; Matsuda H; Abe Y; Imachi K; Masuzawa T; Nakatani T; Sase K; Tabayashi K; Takatani S; Tatsumi E; Umezu M
    Artificial Organs, Sep. 2010, [Reviewed]
  • Miniaturized Magnetically Levitated Motor for Pediatric Artificial Heart               
    Osa M; Masuzawa T; Tatsumi E
    Proceedings the 12th International Symposium on Magnetic Bearings (ISMB 12), Aug. 2010
  • Axial Magnetic Bearing Development for the BiVACOR Rotary BiVAD/TAH
    Greatrex NA; Timms DL; Kurita N; Palmer EW; Masuzawa T
    IEEE Transactions on Biomedical Engineering, Mar. 2010, [Reviewed]
  • 二次元集積化磁気センサのフレームレート向上に関する研究
    木村孝之; 横山裕大郎; 増澤徹, To improve the frame rate of a two-dimensional integrated magnetic sensor, the pixel structure and readout circuits were re-examined. The frame rate was improved by reducing the noise of the horizontal shift register by lowering the drive frequency and parallel reading (with 16 channels). With this idea, two-dimensional integrated magnetic sensors were designed and fabricated with the standard 0.35 μm CMOS process on silicon. The type of Hall sensor is n-type Hall sensor that uses an inversion layer under the gate oxide of the MOSFET. The Hall sensors were arrayed (64×64), and the control digital circuits and output amplifier were also integrated into the same chip. "One pixel" was 50×50 μm, and the entire chip was 4.9×4.9 mm. The frame rate was 7813 frames/sec at a 2-MHz horizontal shift register frequency. The average sensitivity of these sensors was 72.9 mV/(mA·T). The two-dimensional magnetic flux distribution was measured with a 3000-rpm, 1-mm-diameter Nd-Fe-B rare-earth permanent rotating magnet without image lag. From the measurement results, a high frame-rate magnetic sensor for motor control was successfully fabicated., The Institute of Image Information and Television Engineers
    映像情報メディア学会, Mar. 2010, [Reviewed]
  • Design and basic characteristics of permanent magnet hybrid type axial magnetic bearings
    Nobuyuki Kurita; Youhei Takahashi; Takeo Ishikawa; Daniel Timms; Nicholas Greatrex; Toru Masuzawa
    Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation, CEFC 2010, 2010, [Reviewed]
  • The wear properties and adhesion strength of the diamond-like carbon film coated on SUS, Ti and Ni-Ti with plasma pre-treatment
    Ozeki K; Masuzawa T; Hirakuri KK
    Bio-Medical Materials and Engineering, 2010, [Reviewed]
  • Cross-sectional hydrogen content and mass density profiles of diamond-like carbon film by neutron and X-ray reflectivity
    Ozeki K; Saitoh H; Takeda M; Ohgoe Y; Hirakuri KK; Yonemura M; Masuzawa T
    Diamond & Related Materials, 2010, [Reviewed]
  • Development of tissue adhesion method using integrated low-level energies
    Katoh A; Masuzawa T; Ozeki K; Kishida A; Kimura T; and Higami T
    Medical Engineering & Physics, 2010, [Reviewed]
  • 両心補助人工心臓BiVACOR Bi-VAD用磁気浮上モータ
    増澤 徹; 佐々木瑛祐; ダニエル L ティムス, We have developed a new assist device BiVACOR for bi-ventricular support. In this paper, newly developed magnetically suspended motor for the BiVACOR is reported. BiVACOR has double pumps for left and right ventricular assist driven by single magnetically suspended motor (MSM). Flow difference between the left and the right pump is regulated by changing the amount of the second flow through blood gap between impeller top edge and pump casing by shifting the impeller position axially. New MSM has a combined core for magnetic bearing and motor. Both of the impellers are set at the both end of the integrated core. Back surface of the left pump impeller faced to the core side has permanent magnets to construct the hybrid magnetic bearing with the core that electric magnets for the magnetic bearing are constructed on. Permanent magnets for motor are set on back surface of the right pump impeller. Both impellers are connected rigidly with a center shaft through the center hall of the stator core. Attractive forces produced by the motor and the magnetic bearing are made balance to suspend the rotating impellers. The axial position of the impellers is adjusted with the magnetic bearing when the flow balance between the left and right pump is changed. Performance of the developed MSM as an actuator for BiVACOR was evaluated. The new MSM is rotated with levitation up to a rotating number of 4,800rpm. Vibration amplitude with a rotating number of 2,000rpm is only 27 micro meters and the axial position of the impeller is controllable in the range of 500 micro meters. The developed MSM has sufficient performance as an actuator of the BiVACOR., 日本AEM学会
    日本AEM学会, 2010, [Reviewed]
  • Characterization of cell culture microdevice integrated with piezoelectric thin film actuator for delivering mechanical vibratory stimuli to cells               
    Kawashima T; Matsuzawa Y; Shibata T; Nomura M; Masuzawa T; Kishida A
    Proc. of 3rd International Conference of Asian Society for Precision Engineering and Nanotechnology (ASPEN2009), 2E-13 (in CD-ROM, 4pp), Nov. 2009, [Reviewed]
  • 5-DOF Controlled Self-Bearing Motor
    Ishikawa T; Matsuda K; Kondo R; Masuzawa T, A novel 5-DOF actively controlled self-bearing motor that combines the functions of a motor, two radial AMBs, and an axial AMB has been developed to achieve smaller size and higher performance simultaneously. In this paper, magnetic suspension performance of the 5-DOF controlled self-bearing motor is reported. First, radial control performance of the developed self-bearing motor is evaluated by the radial experimental setup. Next, tilt control performance and 5-DOF active control performance are evaluated by the 5-DOF experimental setup. Finally, the frequency response in the 5-DOF is measured with the contact-free levitation. The 5-DOF controlled self-bearing motor produced sufficient radial force and tilt control torque to overcome the radial negative stiffness and to stabilize the rotor. The sufficient frequency bandwidth was observed in the frequency response and the self-bearing motor successfully suppressed vibration at the resonant frequencies., The Japan Society of Mechanical Engineers
    Journal of System Design and Dynamics, Jul. 2009, [Reviewed]
  • 4軸制御型磁気軸受を用いた磁気浮上クリーンポンプの研究開発
    黒須寛秋; 増澤徹; 加藤綾子; 小沼弘幸; 柿原功一, A new hybrid magnetic bearing and motor system with wide air gaps has been developed, and a magnetically suspended clean pump with the system has been developed. The optimization method to determine the optimal values of the design parameters has been developed based on magnetic equivalent circuit technique, genetic algorithm and three dimensional magnetic field analysis. The size of the hybrid magnetic bearing C core, the thickness of the permanent magnets, and the turn number of the electromagnets are optimized by the method. The developed system has an outer diameter of 100mm, a length of 140mm, and air gaps of 3.5mm. And the developed pump has an outer diameter of 100mm, a length of 160mm. The measured ratio of force to excitation current is 36.4N/A. The rotor-impeller could be driven up to a rotational speed of 6000rpm without touching anywhere. The developed pump indicates sufficient pump performances which are maximum pump head of 9.37mH_2O and maximum flow rate of 27.3L/min., 日本AEM学会
    日本AEM学会, Jun. 2009, [Reviewed]
  • Gas barrier properties of diamond-like carbon films coated on PTFE
    Ozeki K; Magashima I; Ohgoe Y; Hirakuri KK; Mukaibayashi H; Masuzawa T
    Applied surface science, 2009, [Reviewed]
  • Development of a cost effective gap sensor for magnetic bearings               
    Okada Y; Ishikawa T; Masuzawa T; Kondo R
    日本AEM学会, 2009
  • Adsorptive property of albumin and streptokinase on sputtered hydroxyapatite film and its antithrombogenicity               
    Yoshihara H; Ozeki K; Masuzawa T and Aoki H
    Applied Surface Science, 22 Aug. 2008, [Reviewed]
  • 5軸能動制御型セルフベアリングモータの開発
    松田健一; 石川達也; 増澤徹; 近藤良, This paper proposes a novel self-bearing motor. The rotor of the proposed self-bearing motor has the side surface permanent magnets with the conventional circumferential surface permanent magnets. The overhanging stator is newly fixed to the outside of the original stator core. This joined stator core can generate axial direction force effectively to the integrated rotor. The principle of the axial control force and the tilting control torque generation is shown and the general solutions of the force and the torque are also presented. The fundamental characteristics of the self-bearing motor are analyzed by 3-dimensional magnetic field analysis using finite element method. The results show the high feasibility of the 5-axis active control type self-bearing motor., 日本AEM学会
    日本AEM学会, 2008, [Reviewed]
  • 5-DOF Controlled Self-Bearing Motor               
    Ishikawa T; Matsuda K; Masuzawa T; Kondo R
    Proceedings of the 11th International Symposium on Magnetic Bearings, 2008
  • Wide gap magnetic bearing system for a magnetically suspended clean pump               
    Kurosu H; Masuzawa T; Katoh A; Suzuki K; Onuma H; Kakihara K
    Proceedings of the 11th International Symposium on Magnetic Bearings, 2008
  • Photolithography system with liquid crystal display as active gray-tone mask for 3D structuring of photoresist
    Hayashi T; Shibata T; Kawashima T; Makino E; Mineta T; Masuzawa T
    Sensors and Actuators A, 2008, [Reviewed]
  • Axial magnetic bearing developments for the Bivacor rotary BIVAD/TAH
    Kurita N; Timms D L; Masuzawa T; Greatrex N; Masuzawa T
    Proceedings of the 11th International Symposium on Magnetic Bearings, 2008, [Reviewed]
  • Development of a novel hybrid type magnetic bearing and application to small impeller centrifugal pump for artificial hearts
    Takashi Saitoh; Toru Masuzawa; Naohisa Nakayama, We have developed a new hybrid magnetic(HM)bearing system for durable and small size artificial hearts. A prototype maglev pump was also developed to verify the feasibility of the developed HM bearing system. A small impeller centrifugal pump was combined with the HM bearing for the prototype pump. The impeller is levitated by a set of HM bearings at both sides of the impeller. A motor stator is set at the center of the device to rotate the levitated impeller. Maximum rotating speed with complete levitation in the air is15, 000rpm. Maximum oscillation amplitude in the radial direction is 0. 04mm with a target rotating number of5, 000rpm. The developed HM bearing system indicated sufficient levitation performance for the artificial heart and the magnetically levitated centrifugal pump with small impeller also displayed good pump performance as a ventricular assist system., The Society of Life Support Engineering
    ライフサポート, Dec. 2006, [Reviewed]
  • Characteristics of a two-dimensional integrated magnetic sensor for position sensing and motor control
    Takayuki Kimura; Keigo Takasaki; Toru Masuzawa
    IEEJ TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING, Aug. 2006
  • Hemolysis resulting from surface roughness under shear flow conditions using a rotational shear stressor
    Nishida M; Yamane T; Oshima I; Adachi Y; Masuzawa T
    Artificial organs, 2006
  • 509 Optimization of the radially maglev centrifugal pump for artificial heart
    ONUMA Hiroyuki; OKADA Yohji; MASUZAWA Toru, The Japan Society of Mechanical Engineers
    Proceedings of the JSME Bioengineering Conference and Seminar, 2005
  • Novel maglev pump with a combined magnetic bearing
    Onuma H; Murakami M and Masuzawa T
    ASAIO Journal, Jan. 2005, [Reviewed]
  • アキシャル型磁気浮上モータを用いた人工心臓用遠心ポンプの開発
    小沼弘幸; 加藤勇; 増澤徹, The lifetime of a rotary blood pump as an artificial heart is mainly determined by the durability of mechanical parts such as bearings and seals. The purpose of this study is to develop a durable centrifugal blood pump with self-bearing motor techniques. A magnetically suspended centrifugal blood pump by using an axially levitated motor is reported. The axially levitated motor consists of a top stator, a levitated rotor, a bottom stator, and a permanent magnet bearing. The levitated rotor is set between the top and the bottom stator. The axial position of the rotor is controlled by using the electromagnets. The maximum head pressure and the maximum flow rate of the magnetically suspended centrifugal pump were 200 mmHg and 81/min, respectively. The developed pump displayed good magnetic suspension performance and sufficient pump performance as a ventricular assist device., The Japan Society of Mechanical Engineers
    日本機械学会論文集(C編), Jan. 2005, [Reviewed]
  • 離散要素法を用いた微小循環内の血流シミュレーション               
    岩田賢; 田中伸厚; 増澤徹
    ライフサポート, 2005, [Reviewed]
  • Hemolysis caused by surface roughness under shear flow
    Numata Y; Nishida M; Yamane T; Oshima I; Adachi Y; Masuzawa T
    J Artif Organs, 2005
  • Development of Photolithography System with Liquid Crystal Device as Active Mask for Synthesizing DNA Chips
    SHIBATA Takayuki; HAYASHI Terutake; NODA Takayuki; MASUZAWA Toru; MAKINO Eiji, The Society of Life Support Engineering
    Journal of Life Support Technology, 2004
  • Improvement of centrifugal blood pump for artificial heart with radially Maglev motor
    Onuma Hiroyuki; Masuzawa Toru; Okada Yohji; Tsukiya Tomonori; Taenaka Yoshiyuki, The Society of Life Support Engineering
    Journal of Life Support Technology, 2004
  • Micro magnetically suspended system for an axial flow artificial heart
    SAITO T; MASUZAWA T; OKADA Yoji; ONUMA Hiroyuki; KOJIMA J, The Society of Life Support Engineering
    Journal of Life Support Technology, 2004
  • Improvement of magnetically suspended centrifugal blood pump with 3DOFcontrol
    MURAKAMI M.; ONUMA H.; MASUZAWA T., The Society of Life Support Engineering
    Journal of Life Support Technology, 2004
  • Axial type self-bearing motor for axial flow blood pump
    Y Okada; T Masuzawa; KI Matsuda; K Ohmori; T Yamane; Y Konishi; S Fukahori; S Ueno; SJ Kim
    ARTIFICIAL ORGANS, Oct. 2003
  • Magnetically suspended centrifugal blood pump with an axially levitated motor
    Masuzawa T; Ezoe S; Kato T; Okada Y
    Artificial Organs, Jul. 2003
  • 小型電気油圧式アクチュエータを用いた補助人工心臓の開発               
    佐久間剛太; 増澤徹; 塚原金二; 土本勝也
    ライフサポート, Jan. 2003
  • Shear evaluation by quantitative flow visualization near the casing surface of a centrifugal blood pump
    Masahiro Nishida; Takashi Yamane; Yuki Tsukamoto; Kazuyuki Ito; Yoshiaki Konishi; Toru Masuzawa; Tomonori Tsukiya; Seiko Endo; Yoshiyuki Taenaka
    JSME International Journal, Series C: Mechanical Systems, Machine Elements and Manufacturing, Dec. 2002
  • マイクロカプセル模擬血液の剪断応力による破壊特性
    丸山 修; 山根隆志; 西田正浩; 筒井達夫; 軸屋智昭; 小野口富夫; 岩崎友美; 増澤徹, Microcapsule suspensions substituted for animal blood were designed as model blood for hemolysis tests of circulatory artificial organs. They included microcapsules, which were likened to erythrocytes, for main components of the suspensions .In this paper, we used two types of microcapsules, whose membrane materials were polyurethane and melamine resin respectively, and the both target sizes were 100μm in diameter. The fractural properties of the capsules in the suspensions were tested under the shear stress, generated by the rotational shear stressor. Flow patterns in the shear stressor were examined with an oil spot method. Polyurethane-capsule suspension showed similar fractural behavior to the bovine blood results under the rotational shear stressor. However, the behavior of melamine-capsule suspensions was different from the bovine blood, though the destructive sensitivity was higher than that of polyurethane-capsule suspension. We conclude that both suspensions with 100μm diameter can be candidates of standard hemolysis test solutions., The Society of Life Support Engineering
    ライフサポート, Dec. 2002
  • Magnetically suspended centrifugal blood pump with a self-bearing motor
    Masuzawa T; Onuma H; Kim SJ; Okada Y
    ASAIO Journal, Jul. 2002
  • Flow visualization analysis of relative stagnation areas on the impeller surface of a centrifugal blood pump
    Ahmed Aouidef; Takashi Yamane; Masahiro Nishida; Masahiro Toyoda; Yuki Tsukamoto; Kazuyuki Ito; Yoshiaki Konishi; Toru Masuzawa; Tomonori Tsukiya; Yoshiyuki Taenaka, Springer Science and Business Media LLC
    Journal of Artificial Organs, Dec. 2001
  • Development and chronic in vivo testing of an electrohydraulic totally implantable artificial heart system
    Eisuke Tatsumi; Yoshiuki Taenaka; Akihiko Homma; Knihiro Uesho; Tomohiro Nishinaka; Tomonori Tsukiya; Hisateru Takano; Toru Masuzawa; Makoto Nakamura; Kohji Koshiji; Kinji Tsukahara; Katsuya Tsuchimoto; Hideki Wakui
    American Society of Mechanical Engineers, Bioengineering Division (Publication) BED, 2001
  • Noninvasive assessment method to determine the anatomic compatibility of an implantable artificial heart system
    B Zhang; E Tatsumi; Y Taenaka; H Takano; T Masuzawa
    ASAIO JOURNAL, Sep. 2000, [Reviewed]
  • Magnetically suspended rotary blood pump with radial type combined motor-bearing (jointly authored)
    Masuzawa T; Kita T; Matsuda K; Okada Y
    Artificial Organs, Jun. 2000
  • 酸素消費量モニタを利用した全人工心臓の流量制御法の開発               
    中村真人; 本間章彦; 高谷節雄; 大内克洋; 坂本徹; 上所邦広; 巽英介; 妙中義之; 増澤 徹
    循環制御, Apr. 2000
  • Transcutaneous Energy Transmission System for a Totally Implantable Total Artificial Heart - Design and In Vivo Evaluation of the Energy Backup System -
    SHIBA K; SHU E; KOSHIJI K; TSUCHIMOTO K; TSUKAHARA K; MASUZAWA T; KAKUTA Y; TATSUMI E; TAENAKA Y; TAKANO H, We have been developing an externally-coupled transcutaneous energy transmission system (ECTETS) for a totally implantable total artificial heart (TITAH) When a patient takes a bath or if some emergency of transcutaneous energy transmission occurs, the energy backup system must switch the energy source from the ECTETS to a rechargeable internal backup battery (RIBB). Then when the transcutaneous energy transmission has been restarted, the energy backup system must switch the energy source from the rechargeable battery to the ECTETS in order to drive TITAH and charge the RIBB. In this study, an energy backup system that can automatically switch energy sources without any discontinuity of the energy supply, was designed and manufactured on an experimental basis. Further, the performance of the energy backup system was evaluated in an in vivo experiment by implanting the secondary coil of the transcutaneous transformer and the RIBB (consisting of a series connection of seven Li+ rechargeable batteries) enclosed in a titanous canister in the goat body. As a result, it was found that the switch from the ECTETS to the RIBB requires 100ms and from the RIBB to the ECTETS 50ms. The total efficiency of the ECTETS with the energy backup system was 73-97%, and the temperatures of the implanted devices were less than 40.5°C. It is concluded that the ECTETS with an energy backup system performs adequately., JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    Journal of the Japanese Society for Artificial Organs and Tissues, 15 Feb. 2000
  • Computational fluid dynamics analysis of a centrifugal blood pump with washout holes
    Yuki Tsukamoto; Kazuyuki Ito; Toshio Sawairi; Yoshiaki Konishi; Takashi Yamane; Masahiro Nishida; Toru Masuzawa; Tomonori Tsukiya; Seiko Endo; Yoshiyuki Taenaka
    Artificial Organs, 2000
  • Progress of an electrohydraulic total artificial heart system with a separate energy converter (jointly authored)
    Masuzawa T; Tatsumi E; Taenaka Y; Nakamura M; Endo S; Takano H; Koshiji K; Fukui Y; Murai T; Tsukahara K
    ASAIO Journal, Sep. 1999
  • Control of a total artificial heart using mixed venous oxygen saturation
    M Nakamura; T Masuzawa; E Tatsumi; Y Taenaka; T Ohno; T Nakamura; B Zhang; Y Kakuta; T Nakatani; H Takano
    ASAIO JOURNAL, Sep. 1999
  • Development of design methods for a centrifugal blood pump with a fluid dynamic approach : Results in hemolysis tests (jointly authored)
    Masuzawa T; Tsukiya T; Endo S; Tatsumi E; Taenaka Y; Takano H; Yamane T; Nishida M; Asztalos B; et al
    Artificial Organs, Aug. 1999
  • Three-dimensional thoracic modeling for an anatomical compatibility study of the implantable total artificial heart
    B Zhang; T Masuzawa; E Tatsumi; Y Taenaka; C Uyama; H Takano; M Takamiya
    ARTIFICIAL ORGANS, Mar. 1999
  • The development of a control method for a total artificial heart using mixed venous oxygen saturation
    M Nakamura; T Masuzawa; E Tatsumi; Y Taenaka; T Nakamura; B Zhang; T Nakatani; H Takano; T Ohno
    ARTIFICIAL ORGANS, Mar. 1999
  • In vivo evaluation of the national cardiovascular center electrohydraulic total artificial heart
    E Tatsumi; T Masuzawa; M Nakamura; Y Taenaka; T Nishimura; S Endo; B Zhang; Y Kakuta; M Nakata; T Nakamura; T Nishinaka; H Takano; K Tsukahara; K Tsuchimoto
    ARTIFICIAL ORGANS, Mar. 1999
  • 混合静脈血酸素飽和度に基づいた全人工心臓流量制御法の開発               
    中村真人; 巽 英介; 増澤 徹; 妙中義之; 大野 孝; 上所邦広; 角田幸秀; 張 斌; 中村知道
    人工臓器, Mar. 1999
  • Transcutaneous energy transmission system for a totally implantable artificial heart. Charging control of rechargeable internal backup battery and driving a TIAH.
    Shiba K; Honda H; Shu E; Koshiji K; Tsuchimoto K; Tsukahara K; Masuzawa T; Tatsumi E; Taenaka Y; Takano H, A rechargeable internal backup battery (RIBB) for a totally implantable artificial heart (TIAH) is required as a backup for the transcutaneous energy transmission system (TETS). We have been developing an externally coupled transcutaneous energy transmission system (ECTETS) as a TETS. This paper reports on the use of the ECTETS to simultaneously power a TIAH and Li-ion rechargeable internal backup batteries as a RIBB. A charge-control circuit consisted of a constant-current and constant-voltage circuit created on an experimental basis, and a push-pull circuit was used as the switching circuit for the ECTETS. The energy from the ECTETS was simultaneously supplied to a TIAH consuming a power of 20 W, simulated by an electronic load simulator, and the charger of the RIBB. As a result, it was found that the time required to charge up was 102 minutes, the outnput power and the DC-to-DC energy transmission efficiency of the ECTETS were 22-35 W and 81-84%, respectively, and the efficiency of the charge control circuit was 91-93%. It is concluded that charging was safely, quickly and efficiently performed, and the ECTETS showed a high enough level of performance to simultaneously power the TIAH and the charger., JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    Journal of the Japanese Society for Artificial Organs and Tissues, 1999
  • Investigation of a transcutaneous transformer with regard to high-power transmission for a totally implantable artificial heart.
    Shiba K; Shu E; Koshiji K; Fujiwara O; Nakamura Y; Masuzawa T; Tatsumi E; Taenaka Y; Takano H, When simultaneously charging a rechargeable internal backup battery and driving a totally implantable artificial heart (TIAH), we must transcutaneously transmit a power of more than 40 W from outside of the body. In this paper, the materials, shape, and section area of the ferrite core used in an externally-coupled transcutaneous energy transmission system (ECTETS) were investigat ed with regard to high-power transmission.A material of low energy loss and temperature dependency in the range of 25-36°C was selected for the ferrite core, and this ferrite core was designed to be shaped like a donut from the viewpoint of easy attachment to the body. Three kinds of transformers (section areas of T1: 126 mm2, T2: 189 mm2 and T3: 242 mm2, respectively) were made experimentally, and the DC-to-DC energy transmission efficiency (with a transmission power of 40 W) of the ECTETS with each transformer was measured in an in vitro experiment. As a result, it was found that the efficiencies when using T2 and T3 were improved by more than 15%, and the temperature rises were suppressed by 50% compared with the conventional transformer. Although acute and the 2-week chronic animal experiments were also conducted with goats, there were no noticeable differences in the results compared with the in vitro experiment. In the animal experiments, the temperature on the ferrite core surface was suppressed to less than 42°C.It is concluded that the ferrite core with a section area of more than 189 mm2 can be used as an externally coupled transcutaneous transformer.KEYWO, JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    Journal of the Japanese Society for Artificial Organs and Tissues, 1999
  • Computational fluid dynamics analysis to establish the design process of a centrifugal blood pump: Second report
    Yuki Miyazoe; Toshio Sawairi; Kazuyuki Ito; Yoshiaki Konishi; Takashi Yamane; Masahiro Nishida; Balazs Asztalos; Toru Masuzawa; Tomonori Tsukiya; Seiko Endo; Yoshiyuki Taenaka
    Artificial Organs, 1999
  • Flow visualization study to improve hemocompatibility of a centrifugal blood pump
    Masahiro Nishida; Balázs Asztalos; Takashi Yamane; Toru Masuzawa; Tomonori Tsukiya; Seiko Endo; Yoshiyuki Taenaka; Yuki Miyazoe; Kazuyuki Ito; Yoshiaki Konishi
    Artificial Organs, 1999
  • Selection of a rechargeable internal back-up battery for a totally implantable artificial heart
    Hiroyuki Honda; Kenji Shiba; Eimei Shu; Kohji Koshiji; Takeji Murai; Tomomichi Nakamura; Toru Masuzawa; Eisuke Tatsumi; Yoshiyuki Taenaka; Hisateru Takano, Lippincott-Raven Publ
    ASAIO Journal, 1999, [Reviewed]
  • A transcutaneous energy transmission system with rechargeable internal back-up battery for a totally implantable total artificial heart
    Kenji Shiba; Eimei Shu; Kohji Koshiji; Kinji Tsukahara; Tomomichi Nakamura; Toru Masuzawa; Eisuke Tatsumi; Yoshiyuki Taenaka; Hisateru Takano, Lippincott-Raven Publ
    ASAIO Journal, 1999, [Reviewed]
  • Cardiac autonomic nervous function during long-term nonpulsatile left heart bypass
    Tomohiro Nishinaka; Eisuke Tatsumi; Takashi Nishimura; Yoshiyuki Taenaka; Toru Masuzawa; Masako Nakata; Hisateru Takano; Hitoshi Koyanagi
    Artificial Organs, 1999, [Reviewed]
  • Augmentative effect of pulsatility on the wall shear stress in tube flow
    Masako Nakata; Eisuke Tatsumi; Tomonori Tsukiya; Yoshiyuki Taenaka; Takashi Nishimura; Tomohiro Nishinaka; Hisateru Takano; Toru Masuzawa; Kenkichi Ohba
    Artificial Organs, 1999, [Reviewed]
  • Diminished vasoconstrictive function caused by long-term nonpulsatile left heart bypass
    Takashi Nishimura; Eisuke Tatsumi; Tomohiro Nishinaka; Yoshiyuki Taenaka; Toru Masuzawa; Masako Nakata; Hisateru Takano
    Artificial Organs, 1999, [Reviewed]
  • Quantitative evaluation of humoral conditions under various pulmonary blood flow during venoarterial bypass
    TAKEWA Y.; TATSUMI E.; TAENAKA Y.; NAKATANI T.; MASUZAWA T.; NISHIMURA T.; NAKAMURA M.; ENDO S.; TAKANO H.; TANAKA S., Hemodynamic and humoral conditions under various pulmonary blood flow during venoarterial bypass (VAB) were quantitatively investigated in a series of chronic animal experiments. A biventricular bypass system was installed in 6 adult goats weighing 50.0±1.1 kg. Two weeks later the extracorporeal circuitry was changed to VAB without anesthesia. The PAF was reduced stepwise from 100% to 50, 25, 10 and 0% of total systemic flow. The mean aortic pressure (mAoP) and systemic vascular resistance (SVR) decreased in proportion to the decrease in PAF and caused a sort of shock state at 0% PAF. The prostaglandin E2 (PGE2) concentration increased following the decrease in PAF from 100 to 0%. The renin-angiotensin system increased in proportion to the decrease in PAF. In contrast, the catecholamines concentrations did not change appreciably even at 10% PAF, but were markedly elevated at 0% PAF. The antidiuretic hormone level similarly changed. In conclusion, decrease in PAF during VAB exerts significant effects on the hemodynamics. The changes in the levels of vasodilators, especially PGE2, may play a substantial role in the decrease in SVR, whereas changes in vasoconstrictors are likely to be a secondary reaction to the decrease in mAoP., JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    Journal of the Japanese Society for Artificial Organs and Tissues, 15 Aug. 1998
  • Prolonged nonpulsatile left heart bypass with reduced systemic pulse pressure causes morphological changes in the aortic wall
    T Nishimura; E Tatsumi; S Takaichi; Y Taenaka; Y Wakisaka; T Nakatani; T Masuzawa; Y Takewa; M Nakamura; S Endo; M Nakata; H Takano
    ARTIFICIAL ORGANS, May 1998, [Reviewed]
  • Development of design methods of a centrifugal blood pump with in vitro tests, flow visualization, and computational fluid dynamics: Results in hemolysis tests
    K Takiura; T Masuzawa; S Endo; Y Wakisaka; E Tatsumi; Y Taenaka; H Takano; T Yamane; M Nishida; B Asztalos; Y Konishi; Y Miyazoe; K Ito
    ARTIFICIAL ORGANS, May 1998
  • LONG-TERM EVALUATION OF A HEPARIN BONDED ARTIFICIAL LUNG -CONTINUOUS USE UP TO 36 DAYS
    TAKEWA Y.; TATSUMI E.; TAENAKA Y.; NAKATANI T.; MASUZAWA T.; NISHIMURA T.; NAKAMURA M.; ENDO S.; TAKANO H.; TANAKA H., The long-term evaluation of a heparin bonded artificial lung (AL) was performed with chronic animal experiments. The AL developed in our institution was made with polyolefin hollow fiber membrane where micropores are blind-ended to prevent serum leakage. The blood contacting surface is treated with newly developed covalently heparin-bonding technique to provide good antithrombogenicity. Six goats weighing 50±1.1 kg were perfused with the AL and a pneumatic ventricular assist device in a venoarterial bypass circuit for up to 36 days (17±14 days). Serum leakage was completely prevented in all the devices throughout the experiments. Minimum amounts of heparin (2-3 U/kg/h) were used for systemic anticoagulation. Only in one case the thrombotic complication related to the AL was observed The gas exchange performance was satisfactorily demonstrated for up to 36 days. Blood components and coagulation factors were maintained within acceptable limits. The blood contacting surfaces after the experiment were found almost free of thrombus, while in 3 cases which were perfused more than 2 weeks, thrombus formation was observed mainly on the margin of the inflow side. These results indicate that our AL can be used for prolonged ECMO, although further improvement in thromboresistant properties should be achieved., JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    Journal of the Japanese Society for Artificial Organs and Tissues, 15 Apr. 1998
  • EXTERNALLY-COUPLED TRANSCUTANEOUS ENERGY TRANSMISSION SYSTEM FOR A TOTALLY IMPLANTABLE ARTIFICIAL HEART-IN VITRO AND IN VIVO ESTIMATIONS FROM THE VIEWPOINT OF ELECTRICAL ENGINEERING
    SHIBA K.; SHU E.; KOSHIJI K.; TSUKAHARA K.; TSUCHIMOTO K.; OHU-MI T.; NAKAMURA T.; ENDO S.; MASUZAWA T.; TATSUMI E.; TAENAKA Y.; TAKANO H., Externally-coupled transcutaneous energy transmission system(ECTETS) which has DC to DC energy transmission efficiency of more than 86% in in vitro experiment is very useful for a totally implantable artificial heart. In in vivo experiment of the ECTETS with the internal coil and the rectifier circuit implanted under the skin of a living goat, the DC to DC energy transmission efficiencies were measured using electronic load simulator(ELS) and implantable electrohydraulic total artificial heart(EHTAH) as a load, respectively. As a result, the DC to DC energy transmission efficiency of the ECTETS with the ELS was 81.4% in operation at the output power of 19.2W. It was found that the lowering of the efficiency compared with that in in vitro experiment was caused by the increase in stray capacitance between the windings of the external coil by applying liquid to that surface for sterilization. In driving the EHTAH at the heart rate of 70bpm, the driving power was 20.7W, the pump output flow was 6.2L/min, the DC to DC energy transmission efficiency was 82.1%, and the surface temperature of the internal circuit was less than 40.5°C. In conclusion, the ECTETS had good performance in in vivo experiment., JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    Journal of the Japanese Society for Artificial Organs and Tissues, Apr. 1998, [Reviewed]
  • エレクトロハイドローリック方式全人工心臓の慢性動物実験による生体内評価
    巽 英介; 増澤 徹; 妙中義之; 中村真人; 遠藤誠子; 西村 隆; 孫 領相; 大野 孝; 瀧浦晃基; 武輪能明; 中谷武嗣; 高野久輝, In vivo performance of an electrohydraulic total artificial heart (EHTAH) system was evaluated for 10 days in a chronic animal experiment. The system consisting of blood pumps and an energy converter was implanted in a 62 kg calf, and was actuated by an external controller though a percutaneous lead at a fixed rate of 85 bpm. A shunt hole of 4.5 mm in diameter was made in the atrial septum to redistribute imbalanced left and right atrial pressures and volumes. During the experiment, the animal's circulation was stably maintained by the EHTAH with an adequate left-right balance. Oxygen metabolic condition was kept favorable at any time of the experiment. No abnormality was found in major organ functions. Generation and dissipation of heat from the device was also acceptable. There occurred, however, mechanical failures including hydraulic oil leakage detected on the 9th day and bearing breakdown resulting in device malfunction on the 10th day. The device demonstrated good anatomic fit at autopsy, as well as at implantation, without compromising the great vessels and adjacent tissues. It is concluded that the EHTAH system has a sufficient in vivo basic performance, although appropriate measures are to be implemented against the mechanical problems detected in the present study., JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    人工臓器, Apr. 1998
  • 可視化解析による全人工心臓用血液ポンプ室内流れの検討               
    中田雅子; 増澤 徹; 巽 英介; 瀧浦晃基; 妙中義之; 高野久輝; 大場謙吉; 土本勝也; 塚原金二; 大海武晴
    人工臓器, Apr. 1998
  • 体内完全埋込型人工心臓に用いる経皮エネルギー伝送ユニットの生体適合性及び実用性の評価-体内埋込時の温度特性とエネルギー伝送効率の検討-
    中村知道; 増澤 徹; 遠藤誠子; 角田幸秀; 巽 英介; 妙中義之; 高野久輝; 柴 建次; 越地耕二, The biocompatibilty and practicality of the transcutaneous energy transmission unit(PEI) for the totally implantable artificial heart system were evaluated m in vitro and in vivo experiments. The distribution of the surface temperature on an internal rectifier circuit was investigated by using a thermography camera in the air. We studied thermal characteristics and energy transfer efficiency of the implanted TET system with a goat weighing of 44kg. An energy of 24W was transferred through skin with the TET system. The surface temperature of the rectifier circuit the external coil, and the energy transmission efficiency were measured for one month. A treadmill exercise best at a speed of 2km/h was carried out to investigate the influence of the body movement on the energy transmission efficiency of the TET system. Abnormal high temperature spot on the TET system was not observed, and the temperature on the implanted system slid not rise and stayed with the same level of the body temperature. The energy transfer efficiency was 80-85% and no change of the efficiency was observed on the treadmill exercise test. As a result sufficient practicality and biocompatibilty of the TET stem were confirmed., JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    人工臓器, Apr. 1998
  • 電気油圧式全人工心臓の放熱特性に関する検討
    遠藤誠子; 増澤 徹; 巽 英介; 妙中義之; 中谷武嗣; 大野 孝; 脇坂佳成; 西村 隆; 武輪能明; 中村真人; 瀧浦晃基; 孫 領相; 高野久輝
    人工臓器, Feb. 1998
  • 完全置換型人工心臓装着後の循環血液量の変化と液性因子の検討
    中村真人; 巽 英介; 増澤 徹; 大野 孝; 妙中義之; 瀧浦晃基; 孫 領相; 遠藤誠子; 西村 隆; 武輪能明; 脇坂佳成; 中谷武嗣; 高野久輝, The early changes in circulating blood volume (CBV) after implantation of total artificial heart (TAR) were investigated in conjunction with the changes in volume regulating humoral factors (VHFs). CBV and VHFs were periodically evaluated in three calves implanted with an Electrohydraulic or pneumatic TAH and a control calf. The CBV significantly increased in all of the TAH implanted calves, (to 111-155% of the preoperative levels) from early postoperative stage. No consistent decrease in ANP level or consistent increase in ADH level was not observed in the TAH animals, indicating neither ANP nor ADH directly caused the increase of CBV. Renin-angiotensin system were activated in two out of three TAR-implanted animals, suggesting that the implantation of TAR did not always activate the resin-angiotensin system, although there is possible interaction between the CBV and this system. In summary, the CBV increased in the early stage after TAH implantation, and the accompanying changes in VHFs seemed to be not a primary cause of but a secondary response to the increase of CBV, JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    人工臓器, Feb. 1998
  • 心房間シャントによる電気油圧駆動方式全人工心臓システムの左右心拍出量差代償に関する研究
    巽 英介; 中村真人; 増澤 徹; 妙中義之; 孫 領相; 中田雅子; 大野 孝; 遠藤誠子; 西村 隆; 武輪能明; 中谷武嗣; 高野久輝, We evaluated the basic performance of an interatrial shunt (IAS), which was made by punching a hole in the atrial septum, in accommodating the left-right imbalance in our electrohydraulic total artificial heart (EHTAH) system. In an in vitro study conducted in a closed mock circuit connected with the EHTAH, the interatrial pressure gradient changed in proportion to the amount of bronchial flow and the size of the IAS. The IAS of 4.4mm in diameter or larger maintained the interatrial pressure gradient within physiologically permissible limits when the amount of bronchial flow was 5% of cardiac output or less. A left-to-right one-way valve made of a piece of pericardium, a possible option in our IAS method, successfully prevented right-to-left reverse shunt flow through the IAS. In a chronic in vivo study using a calf implanted with the EHTAH for 10 days, a 4.5mm IAS without the one-way valve demonstrated satisfactory dynamic left-right balancing capacity with a stable interatrial pressure gradient of 4±1mmHg over a wide range of atrial pressures. No thrombus was found in or around the IAS at autopsy. We conclude that the IAS is a simple and promising means of left-right balancing in the EHTAH system, JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    人工臓器, Feb. 1998
  • Flow visualization as a complementary tool to hemolysis testing in the development of centrifugal blood pumps
    Takashi Yamane; Balázs Asztalos; Masahiro Nishida; Toru Masuzawa; Koki Takiura; Yoshiyuki Taenaka; Yoshiaki Konishi; Yuki Miyazoe; Kazuyuki Ito
    Artificial Organs, 1998
  • In vitro and in vivo evaluation on heat dissipation of electrohydraulic total artificial heart
    Seiko Endo; Toru Masuzawa; Eisuke Tatsumi; Yoshiyuki Taenaka; Takeshi Nakatani; Takasi Ohno; Yoshinari Wakisaka; Takashi Nishimura; Yoshiaki Takewa; Makoto Nakamura; Koki Takiura; Young Sang Sohn; Hisateru Takano
    Japanese Journal of Artificial Organs, 1998
  • Transcutaneous optical telemetry system with infrared laser diode
    Katsushige Inoue; Kenji Shiba; Eimei Shu; Kohji Koshiji; Kinji Tsukahara; Takeharu Oh-Umi; Toru Masuzawa; Eisuke Tatsumi; Yoshiyuki Taenaka; Hisateru Takano, Lippincott-Raven Publ
    ASAIO Journal, 1998, [Reviewed]
  • Characterization and optimization of the flow pattern inside a diaphragm blood pump based on flow visualization techniques
    Masako Nakata; Toru Masuzawa; Eisuke Tatsumi; Yoshiyuki Taenaka; Takashi Nishimura; Tomonori Tsukiya; Hisateru Takano; Katsuya Tsuchimoto; Kenkichi Ohba, Lippincott-Raven Publ
    ASAIO Journal, 1998, [Reviewed]
  • Development of a flow estimation and control system of an implantable centrifugal blood pump for, circulatory assist
    Yoshinari Wakisaka; Yasuki Okuzono; Yoshiyuki Taenaka; Kenichi Chikanari; Seiko Endo; Toru Masuzawa; Hisateru Takano
    Artificial Organs, 1998, [Reviewed]
  • Effect of gaps between impeller tip and casing wall upon hemolytic property of a centrifugal blood pump
    MASUZAWA Toru; TSUKIYA Tomonori; ENDO Seiko; TATSUMI Eisuke; TAENAKA Yoshiyuki; YAMANE Takashi; NISHIDA Masahiro; ASZTALOS Balazs; MIYAZOE Yuki; ITO Kazuyuki; SAWAIRI Toshio; KONISHI Yoshiaki, The purpose of this study is to examine the relationship between the flow condition and hemolysis level by integrating hemolysis test, flow visualization and computational fluid dynamics(CFD)to establish design criteria for the good hemocompatible centrifugal pump. Axial and radial gaps between the impeller tip and casing wall of Nikkiso centrifugal blood pump were modified independently and flow condition and hemolytic property of these pumps were examined. Examined gaps were 1.5, 1.0, and 0.5 mm for axial gap and 3.0, 2.0, 1.0, and 0.5 mm for radial gap, respectively. The pumps with the axial gap of 0.5 mm and the radial gap of 0.5 mm showed higher hemolysis level than the other pumps showed. Maximum shear stress in the pump, estimated by CFD, were increased by decreasing the radial gap from 3.0 to 0.5 mm. Regional flow pattern change at the tongue region by decreasing radial gap was observed by flow visualization. Gaps between impeller tip and casing wall are dominant factors to determine hemolytic property of the centrifugal pump. Relationship between regional flow pattern and blood trauma should be investigated in the future., The Society of Life Support Engineering
    ライフサポート, 1998
  • In vitro and in vivo heat dissipation of an electrohydraulic totally implantable artificial heart
    S Endo; T Masuzawa; E Tatsumi; Y Taenaka; T Nakatani; T Ohno; Y Wakisaka; T Nishimura; Y Takewa; M Nakamura; K Takiura; YS Sohn; H Takano
    ASAIO JOURNAL, Sep. 1997, [Reviewed]
  • Establishment of flow estimation for an implantable centrifugal blood pump
    Yoshinari Wakisaka; Yasuki Okuzono; Yoshiyuki Taenaka; Kenichi Chikanari; Toru Masuzawa; Hisateru Takano, Lippincott-Raven Publ
    ASAIO Journal, Sep. 1997, [Reviewed]
  • Hemodynamic and humoral conditions in stepwise reduction of pulmonary blood flow during venoarterial bypass in awake goats
    Yoshiaki Takewa; Eisuke Tatsumi; Yoshiyuki Taenaka; Kazuhiro Eya; Takeshi Nakatani; Takashi Nishimura; Young-Sang Sohn; Toru Masuzawa; Yoshinari Wakisaka; Makoto Nakamura; Seiko Endo; Hisateru Takano; Soichiro Kitamura, Lippincott-Raven Publ
    ASAIO Journal, Sep. 1997, [Reviewed]
  • Morphologic changes of the aortic wall due to reduced systemic pulse pressure in prolonged non pulsatile left heart bypass
    Takashi Nishimura; Eisuke Tatsumi; Shigeko Takaichi; Yoshiyuki Taenaka; Yoshinari Wakisaka; Takeshi Nakatani; Toru Masuzawa; Yoshiaki Takewa; Makoto Nakamura; Seiko Endo; Young-Sang Sohn; Hisateru Takano, Lippincott-Raven Publ
    ASAIO Journal, Sep. 1997, [Reviewed]
  • In vitro and in vivo evaluation of a left-right balancing capacity of an interatrial shunt in an electrohydraulic total artificial heart system
    E Tatsumi; M Nakamura; T Masuzawa; Y Taenaka; YS Sohn; T Nishimura; M Nakata; T Nakatani; T Ohno; S Endo; K Takiura; Y Takewa; Y Kakuta; H Takano
    ASAIO JOURNAL, Sep. 1997
  • Characteristics of mixed venous oxygen saturation and physical activity as parameters for artificial heart control
    T Ohno; T Masuzawa; M Nakamura; E Tatsumi; Y Taenaka; T Nakatani; Y Wakisaka; T Nishimura; Y Takewa; H Takano; Y Fukui
    ASAIO JOURNAL, Sep. 1997
  • Noninvasive pump flow estimation of a centrifugal blood pump
    Y Wakisaka; Y Okuzono; Y Taenaka; K Chikanari; T Masuzawa; T Nakatani; E Tatsumi; T Nishimura; Y Takewa; T Ohno; H Takano
    ARTIFICIAL ORGANS, Jul. 1997, [Reviewed]
  • CHRONIC IN VIVO EVALUATION OF AN INTEGRATED ARTIFICIAL HEART-LUNG DEVICE AS A LONG-TERM CARDIOPULMONARY SUPPORT SYSTEM
    TAKEWA Y.; TATSUMI E.; AKAGI H.; EYA K.; TAENAKA Y.; NAKATANI T.; MASUZAWA T.; WAKISAKA Y.; NISHIMURA T.; OHNO T.; TAKIURA K.; NAKAMURA M.; ENDO S.; SOHN Y-S.; TAKANO H.; YODA T; OKAMOTO T.; OHARA Y.; TANAKA S., We have developed an integrated artificial heart-lung device for long-term cardiopulmonary support. The device is composed of an artificial lung unit and two pusher-plate type artificial hearts which are connected to both sides of the artificial lung unit. The core size and the priming volume of the device are 11×14×17cm and 400ml, respectively. The hollow fibers of the artificial lung unit consist of a special polyolefin membrane which can prevent serum leakage. The entire blood-contacting surface of the artificial lung unit is treated with covalent heparin bonding. As a in vitro evaluation, the device exhibited a maximum output of 7.0L/min with a pressure gradient of around 10mmHg per 1L/min flow rate. In acute in vivo evaluation with two adult goats, the device satisfactorily replaced animals' circulation and respiration for 6 hours. Pumping output ranged from 5.5 to 6.0L/min, and PaO2 and PaCO2 were kept above 500mmHg and below 30mmHg, respectively. In chronic in vivo evaluation the device demonstrated a prominent thrombo-resistant property in non-heparin animal use trial. These results suggest that the integrated artificial heart-lung device has a potential to be used for long-term cardiopulmonary support with minimal anticoagulant therapy., JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    Journal of the Japanese Society for Artificial Organs and Tissues, 15 Apr. 1997
  • Early changes in circulating blood volume and volume regulating humoral factors after implantation of an electrohydraulic total artificial heart
    M. Nakamura; E. Tatsumi; T. Masuzawa; Y. Taenaka; T. Nakatani; Y. Sohn; S. Endo; T. Ohno; K. Takiura; T. Nishimura; Y. Takewa; Y. Wakisaka; H. Takano, Lippincott-Raven Publ
    ASAIO Journal, 1997
  • 人工肺(2)
    小林 絋一; 武輪 能明; 巽 英介; 妙中 義之; 中谷 武嗣; 増澤 徹; 西村 隆; 中村 真人; 遠藤 誠子; 高野 久輝; 田中 操一; 猪狩 次雄; 星野 俊一; 岩谷 文夫; 引地 仁; 土本 勝也; 磯山 隆; 中村 真之; 田原 耕一郎; 桑名 克之; 森 康真; 川上 浩良; 長岡 昭二; 窪田 倭; 金森 敏幸; 新保 登志夫, JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    人工臓器, 1997
  • Long-term evaluation of a nonpulsatile mechanical circulatory support system
    Yoshinari Wakisaka; Yoshiyuki Taenaka; Kenichi Chikanari; Takeshi Nakatani; Eisuke Tatsumi; Toru Masuzawa; Takashi Nishimura; Yoshiaki Takewa; Takashi Ohno; Hisateru Takano, Blackwell Publishing Inc.
    Artificial Organs, 1997, [Reviewed]
  • Impact of systemic depulsation on tissue perfusion and sympathetic nerve activity
    Koichi Toda; Eisuke Tatsumi; Yoshiyuki Taenaka; Toru Masuzawa; Hisateru Takano
    Annals of Thoracic Surgery, Dec. 1996, [Reviewed]
  • Development of a precise controller for an electrohydraulic total artificial heart - Improvement of the motor's dynamic response
    JM Ahn; T Masuzawa; Y Taenaka; E Tatsumi; T Ohno; WW Choi; K Toda; K Miyazaki; Y Baba; T Nakatani; H Takano; BG Min
    ASAIO JOURNAL, Sep. 1996
  • Tandem operation of a turbo blood pump (BP-80-type centrifugal pump) to reduce hemolysis
    Wakisaka Y; Taenaka Y; Nakatani T; Anai H; Araki K; Nishimura T; Tatsumi E; Masuzawa T; Baba Y; Toda K; Eya K; Miyazaki K; Takewa Y; Takano H, When operating turbo blood pumps in tandem, the strength of shear stress is reduced, but the exposure duration of the stress is increased. The purpose of this experiment was to compare the degree of contribution of these two factors on hemolysis as well as to evaluate the effectiveness of the tandem operation of turbo blood pumps. Tandem operation of two Bio-pumps (BP-80; Medtronics Bio-medicus, Inc., Eden Prairie, Minnesota, U.S.A,) were compared with single operation of a BP-80 in in vitro hemolysis tests in three different driving conditions, that is, pumping heads of 200, 350, and 500 mm Hg under a pump flow rate of 5 L/min. The Alien's hemolytic indexes of the tandem operation at pumping heads of 200, 350, and 500 mm Kg were 0.014, 0.020, and 0.080 mg/dl, respectively. The hemolytic indexes of the single operation at pumping heads of 200, 350, and 500 mm Hg were 0.014, 0.056, and 0.12 mg/dl, respectively. These results indicate that tandem operation is a useful method of reducing hemolysis with the BP-80 under high pumping heads and that the effect on hemolysis of exposure to higher shear stresses may be more serious than that of longer durations of exposure to shear stress in, Artificial Organs
    Artificial Organs, 07 Aug. 1996
  • Sympathetic nerve activities in pulsatile and nonpulsatile systemic circulation in anesthetized goats
    Koichi Toda; Eisuke Tatsumi; Yoshiyuki Taenaka; Toru Masuzawa; Hisateru Takano
    American Journal of Physiology - Heart and Circulatory Physiology, Jul. 1996, [Reviewed]
  • Development of a centrifugal pump with improved antithrombogenicity and hemolytic property for chronic circulatory support
    Y Taenaka; Y Wakisaka; T Masuzawa; E Tatsumi; K Toda; K Miyazaki; K Eya; Y Baba; T Nakatani; T Ohno; T Nishimura; H Takano
    ARTIFICIAL ORGANS, Jun. 1996
  • DEVELOPMENT AND EVALUATION OF A HEPARIN-BONDED MENMBRANE OXYGENATOR FOR LONG-TERM RESPIRATORY SUPPORT
    EYA K; TATSUMI E; TAENAKA Y; TAKEWA Y; TODA K; WAKISAKA Y; NAKATANI T; BABA Y; MASUZAWA T; MIYAZAKI K; NISHIMURA T; OHNO T; TAKANO H; MIMURA R; TANAKA S; HARADA I, We developed a membrane oxygenator (MO) for long-term respiratory support. The MO is made with polyolefin hollow fiber membrane where micropores are blind-ended to prevent serum leakage. And the blood contacting surface is treated with newly developed covalently heparin-bonding technique to provide good antithrombogenicity. In vivo evaluation of the MO was performed with 4 adult goats for a week. Throughout the experiment, the gas transfer rates were well maintained and the levels of coagulation parameters remained relatively constant and within physiologic ranges. After the device was removed and rinsed with saline, no apparent macroscopic thrombus formation was found in two cases. Scanning electron microscopic examination, however, revealed several fibrin clots on the surfaces in these cases. These results suggest that the antithrombotic properties should be bettered for application of this MO to such a long-term respiratory support as a bridge to lung or heart-lung transplantation., JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    Journal of the Japanese Society for Artificial Organs and Tissues, 15 Apr. 1996
  • Influence of ventricular fibrillation on sympathetic nerve activity under biventricular bypass circulation
    K Toda; E Tatsumi; Y Taenaka; T Masuzawa; K Miyazaki; T Nakatani; Y Baba; K Eya; Y Wakisaka; H Takano
    ARTIFICIAL ORGANS, Feb. 1996, [Reviewed]
  • Charging and discharging control of rechargeable backup-battery for a totally implantable artificial heart.:-Characteristics of lithium ion rechargeable battery
    YASUE H; SHIBA K; KOSHIJI K; SHU E; UTSUNOMIYA T; OHNO T; MASUZAWA T; TATSUMI E; TAENAKA Y; TAKANO H, We study charge and discharge characteristics of a lithium ion rechargeable backup-battery under a condition of same temperature as inside of body for a totally implantable artificial heart. The seven cells of lithium ion battery in series connection were charged on condition of constant voltage of 29.4V (maximum charging current of 1000mA), and they required 84 minutes to be fully charged. We connected the 7-cell lithium ion battery with a mock load of 25Ω, which electrically simulates a typical TAH actuator, and measured dischargeable time of the battery for the mock load. It was dischargeable for 60 minutes, and the terminal voltage varied from 28.9V to 18.9V in this process. The dischargeable time was compared with 20-cell NiCd rechargeable battery with same voltage and same volume as the 7-cell lithium ion battery. It was found that the lithium ion was dischargeable twice as long as the NiCd. Using the terminal voltage of the lithium ion varying in discharging process, we investigated to monitor residual energy of the lithium ion battery. As a result, the residual energy of the battery could be monitored in either of continuously and intermittently discharging using the terminal voltage. And the surface temperature rise of the lithium ion battery was 2°C in case of charge and 8°C in case of discharging. It was found that the lithium ion battery had higher energy density and smaller temperature rise compared with NiCd battery., JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    Journal of the Japanese Society for Artificial Organs and Tissues, 1996
  • Influence of non pulsatile systemic circulation on tissue blood flow and oxygen metabolism
    Eisuke Tatsumi; Koji Miyazaki; Koichi Toda; Yoshiyuki Taenaka; Takeshi Nakatani; Yuzo Baba; Toru Masuzawa; Yoshinari Wakisaka; Kazuhiro Eya; Takashi Nishimura; Yoshiaki Takewa; Takashi Ohno; Hisateru Takano, Lippincott Williams and Wilkins
    ASAIO Journal, 1996
  • Altered oxygen metabolic conditions associated with increased norepinephrine levels in a nonpulsatile systemic circulation
    Eisuke Tatsumi; Koji Miyazaki; Koichi Toda; Yoshiyuki Taenaka; Takeshi Nakatani; Yuzo Baba; Toru Masuzawa; Kazuhiro Eya; Yoshinari Wakisaka; Takashi Nishimura; Yoshiaki Takewa; Takashi Ohno; Hisateru Takano, Lippincott Williams and Wilkins
    ASAIO Journal, 1996
  • Development of an integrated artificial heart-lung device for long-term cardiopulmonary support
    Eisuke Tatsumi; Yoshiaki Takewa; Haruhiko Akagi; Yoshiyuki Taenaka; Kazuhiro Eya; Takeshi Nakatani; Yuzo Baba; Toru Masuzawa; Yoshinari Wakisaka; Koichi Toda; Koji Miyazaki; Takashi Nishimura; Takashi Ohno; Hisateru Takano, Lippincott Williams and Wilkins
    ASAIO Journal, 1996
  • Development of a membrane oxygenator for long-term respiratory support and its experimental evaluation in prolonged ECMO
    Kazuhiro Eya; Eisuke Tatsumi; Yoshiyuki Taenaka; Yoshiaki Takewa; Yoshinari Wakisaka; Koichi Toda; Takeshi Nakatani; Toru Masuzawa; Yuzo Baba; Koji Miyazaki; Takashi Nishimura; Takashi Ohno; Jae Mok Ahn; Hisateru Takano; Rishichi Mimura; Soichi Tanaka; Toru Wada, Lippincott Williams and Wilkins
    ASAIO Journal, 1996
  • Evaluation of a two stage axial flow pump on hemolysis
    Wakisaka Y; Anai H; Nakatani T; Araki K; Taenaka Y; Tatsumi E; Masuzawa T; Baba Y; Toda K; Eya K; Takano H, To reduce hemolysis in an axial flow pump (AP), a basic study of a two stage AP (2S) was performed. The 2S was evaluated in two kinds of in vitro hemolysis tests for four hours. In this first test, the 2S was compared with two kinds of single stage (APs (ISs). Each pump was designed to be operated at a flow rate of 5 l/min and a pressure head of 100 mmHg. The 2S was series operation of two single stage APs designed at a flow rate of 5 λ/min and a pressure head of 50 mmHg. One of the ISs has the same specific speed (Ns) of the 2S and the other IS has the same impeller of the single stage of the 2S. In the second test, hemolysis in each stage of the 2S was evaluated. The basic structure of all single stage APs were same. Allen's hemolytic index (III) of the 2S, that was regarded as an aggregate III of both stage AP, was less than those of the ISs. These data suggests that the 2S was useful to reduce hemolysis in an AP., Japanese Journal of Artificial Organs
    Japanese Journal of Artificial Organs, 01 Jan. 1996
  • Set-up, improvement, and evaluation of an electrohydraulic total artificial heart with a separately placed energy converter. (jointly authored)
    T Masuzawa; Y Taenaka; E Tatsumi; JM Ahn; T Ohno; K Toda; K Miyazaki; Y Wakisaka; K Eya; Y Baba; T Nakatani; H Takano; C Uyama; K Koshiji; Y Fukui; K Takahashi; K Tsuchimoto; K Tsukahara
    ASAIO Journal, 1996
  • HEMOLYSIS AND HEAT-GENERATION IN 6 DIFFERENT TYPES OF CENTRIFUGAL BLOOD PUMPS
    K ARAKI; Y TAENAKA; T MASUZAWA; E TATSUMI; Y WAKISAKA; M WATARI; T NAKATANI; H AKAGI; Y BABA; H ANAI; YH PARK; K EYA; K TODA; H TAKANO
    ARTIFICIAL ORGANS, Sep. 1995
  • Development and in vivo evaluation of an implantable left ventricular assist system with an impedance based monitoring and control system
    T NAKATANI; H ANAI; K EYA; Y WAKISAKA; K TODA; Y TAENAKA; E TATSUMI; T MASUZAWA; Y BABA; H TAKANO
    ASAIO JOURNAL, Jul. 1995, [Reviewed]
  • Heat generation and hemolysis at the shaft seal in centrifugal blood pumps
    Araki K; Taenaka Y; Wakisaka Y; Masuzawa T; Tatsumi E; Nakatani T; Baba Y; Eya K; Toda K; Takano H; Koga Y; Yagura A, The heat and hemolysis around a shaft seal were investigated. Materials were original pumps (Nikkiso HMS-15:N-original, and 3M Delphin:D-original), vane-removed pumps (Nvane(-), Dvane(-)), and a small chamber with a shaft coiled by nichrome wire (mock pump). The original pumps were driven at 500 mmHg and 5 L/min, and vane-removed pumps were driven at the same rotation number. An electrical power of 0, 0.5, 2, and 10 W was supplied to the mock pumps. In vitro hemolytic testing showed that hemolytic indices were 0.027 g/100 L in N-original, 0.013 in Nvane(-), 0.061 in D-original, and 0.012 in Dvane(-). Measurement of heat with a thermally insulated water chamber showed total heat within the pump of 8.62 and 10.85 W, and heat at the shaft seal of 0.87 and 0.62 W in the Nikkiso and Delphin pumps, respectively. Hemolysis and heat generation of mock pumps remained low. The results indicate that the heat generated around the shaft seal was minimal. Hemolysis at the shaft-seal was considerable but not major. Local heat did not affect hemolysis. It was concluded that the shaft-seal affected hemolysis, not by local heat but friction itself., ASAIO Journal
    ASAIO Journal, 01 Jan. 1995
  • Improvement in antithrombogenicity in a centrifugal pump with self wash-out structure for long-term use
    Wakisaka Y; Taenaka Y; Tatsumi E; Araki K; Masuzawa T; Nakatani T; Baba Y; Anai H; Eya K; Toda K; Takano H, Antithrombogenicity in the initial (NCVC-1) centrifugal pump (CP) developed at our institute is provided by a central balancing hole in an impeller that promotes self wash-out blood flow (Sf) around the impeller. The current CP (NCVC-2) was ameliorated to obtain better antithrombogenicity, where the balancing hole diameter was widened to improve Sf velocity (Vsf), and the edge of a thrust bearing (TB) was rounded to minimize flow separation. Effects of the modifications were assessed in in vitro and in vivo studies. The Vsf of the NCVC-1 and the NCVC-2 evaluated by Doppler velocimeter were 12.8 and 22.1 cm/sec, respectively. Flow around the TB visualized by a light cutting method confirmed less flow stagnation in the NCVC-2. In vivo antithrombogenicity of the CPs was investigated in three goats. A pulsatile VAD (P-VAD) was installed paracorporeally between the left atrium and the aorta. After 3 weeks, the P-VAD was exchanged for the NCVC-2 and the NCVC-1 in sequence. Each CP was driven for 1 week and disassembled. No anticoagulation was used, except for heparin injection at pump exchange. Thrombus at the TB was found in the two NCVC-1s, and two little thrombi were on the impeller o, ASAIO Journal
    ASAIO Journal, 01 Jan. 1995
  • Experimental evaluation of intravenous axial flow pump for right heart assist
    Nakatani T; Anar H; Wakisaka Y; Araki K; Taenaka Y; Tatsumi E; Akagi H; Masuzawa T; Baba Y; Eya K; Toda K; Tominaga M; Choi W; Kitoh Y; Takano H, We have developed intravenous axial flow pump for right heart assist. In this study, experimental evaluation of this system was performed. The pump was positioned in the right heart through a 14 mm, low porosity graft anastomosed to the infrarenal inferior vena cava. The pump showed good performance in right heart assistance under induced pulmonary stenosis or induced biventricular failure. Chronic animal experiments were performed using adult goats. There was no difficulties in pump insertion. Level of plasma hemoglobin was acceptable. There was not prominent damages in heart tissues. In conclusion, this pump system is practicable for temporary right heart assist., Japanese Journal of Artificial Organs
    Japanese Journal of Artificial Organs, 01 Jan. 1995
  • Development of an intravenous axial flow pump for temporary right heart assist
    Nakatani T; Anai H; Wakisaka Y; Taenaka Y; Tatsumi E; Masuzawa T; Baba Y; Eya K; Toda K; Araki K; Takano H, In clinical settings, quick application systems with easy access for circulatory support are desired. For left heart assist, an intraarterial axial flow pump (Hemopump) has been developed and applied to clinical cases. However, no simple way has been proposed for right heart assist. We have developed an intravenous axial flow pump for temporary right heart assist and have reported its hemodynamic effect. In this study, in vivo evaluation of this system was performed. The pump system consists of an outflow cannula, an impeller that was newly developed for intravenous use, and a driving system for the Hemopump. A prototype pump demonstrated 3.2 L/min of maximal flow at a pressure differential against 40 mmHg at a pump speed of 28,000 rpm in mock circulation. Application to goats is as follows. A 14 mm low porosity graft was anastomosed to the infrarenal inferior vena cava (IVC). The pump system was inserted into the IVC through the graft and advanced to the right heart using balloon catheter guidance under fluoroscopy, and the tip of the cannula of the pump was positioned at the main pulmonary artery. In acute experiments, this system provided effective right heart assist under induc, ASAIO Journal
    ASAIO Journal, 01 Jan. 1995
  • Approach to decrease hemolysis caused by axial blood flow pump
    Anai H; Araki K; Nakatani T; Wakisaka Y; Taenaka Y; Tatsumi E; Akagi H; Masuzawa T; Baba Y; Eya K; Toda K; Takano H, To decrease hemolysis caused by an axial flow blood pump, we studied whether specific speed at the design point should be kept within the existing engineering standard range or whether pump speed should be reduced to a minimum. Four pumps were designed at a flow of 5 L/min, a head of 100 mmHg and speeds of 14000-26000 rpm. Specific speed of each pump was calculated as 758-1407 (m, m 3 /min, rpm). Hemolytic tests were performed with flesh goat blood in a mock circuit. The lowest level of hemolysis is observed in the pump with the minimum specific speed (758) that is out of the existing engineering standard range. We also studied the influence of change in design of guide vanes on hemolysis. Four guide vanes that had different length and number of vanes were devised for same impellers. In the result of hemolysis test, difference in hemolytic index was not clearly observed among the pumps that had different guide vanes., Japanese Journal of Artificial Organs
    Japanese Journal of Artificial Organs, 01 Jan. 1995
  • Heat generation and hemolysis in centrifugal blood pumps
    Araki K; Taenaka Y; Masuzawa T; Wakisaka Y; Nakatani T; Akagi H; Baba Y; Anai H; Eya K; Toda K; Takano H, We investigated the effect of heat and friction around a shaft-sealing on hemolysis in centrifugal blood pumps. The materials were original pumps (Nikkiso HMS-15 and 3M Delphin), vane-removed pumps and a small chamber with a shaft coiled by a nichrome wire (mock pump) to investigate the effect of local heat on hemolysis. In-vitro hemolytic examination was carried out using heparinized fresh blood of a goat. The original pumps were driven at the flow rate of 5 L/min and pressure head of 500 mmHg. The vane-removed pumps were driven at the same rotation number and the flow of 5 L/min was maintained by Bio-pumps (1000 rpm). Electric power of 0, 0.5, 2 and 10 Watts was supplied to the mock pump and the flow was maintained in the same way. We also measured generated heat of the original pumps and vane-removed pumps with a thermally-insulated water chamber. The results indicated that the heat generated around the shaft-sealing was minimal. The hemolysis of the shaft- sealing was, however, considerable but not principal. The local heat less than 10 Watts did not affect hemolysis. We concluded that a shaft-sealing affects hemolysis by not local heat but the friction, and the main causative, Japanese Journal of Artificial Organs
    Japanese Journal of Artificial Organs, 01 Jan. 1995
  • Development of an electrohydraulic total artificial heart at the National Cardiovascular Center, Osaka, Japan. (jointly authored)
    T MASUZAWA; Y TAENAKA; E TATSUMI; WW CHOI; K TODA; T OHNO; Y BABA; T NAKATANI; H TAKANO; C UYAMA; K KOSHIJI; Y FUKUI; K TAKAHASHI; T OHMI
    ASAIO Journal, 1995
  • Development of totally implantable artificial heart-Electrohydraulic total artificial heart with a regenerative pump energy converter
    MASUZAWA Toru; TAENAKA Yoshiyuki; TATSUMI Eisuke; NAKATANI Takeshi; AKAGI Haruhiko; TAKANO Hisateru; TAKASHI Koshiji; OHNO Takashi; FUKUI Yasuhiro; TAKAHASHI Katumi; SASAGAWA Hiroshi; TUKAHARA Kinji; TUTIMOTO Katsuya; OHMI Takeharu, We have been developing an electrohydraulic total artificial heart (EH) with a motor integrated regenerative pump as an energy converter, The motor and the regenerative pump was improved to move a chronic animal implantation. Three phases and four poles brushless DC motor, which has maximum efficiency of 79% at a motor rotation of 2500rpm with a load of 1kg/cm, was developed for the new actuator. Design of flow channel of the regenerative oil pump was optimized, which resulted in increasing maximum flow rate at one directional motor rotation from 18 to 28L/min. In vitro performance of the EH was evaluated in a mock circulation with 100mmHg of afterload on the left side, 20mmHg on the right side, and 10mmHg of preload on both sides. Maximum output was 10.7L/min at a pump rate of 120bpm Double diaphragm type blood pump (DDP) was also developed to compensate the balance between left and right pump output. Preload sensitive ability of the DDP was evaluated in in vitro experiment. We will turn upon a chronic animal experimental stage with the EH in next few months., JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    人工臓器, 1995
  • The animal experiments of total artificial heart at the national cardiovascular center in japan               
    HY Park; Tatsumi E; Masuzawa T; Taenaka Y; Anai H; Wakisaka Y; Eya K; Toda K; Baba Y; Akagi H; Araki K; Nakatani T; Takano H
    Korean J Thoracic Cardiovas Surg, Oct. 1994
  • In vitro and in vivo assessment of an intravenous axial flow pump for right heart assist
    Nakatani T; Anai H; Araki K; Wakisaka Y; Taenaka Y; Tatsumi E; Akagi H; Masuzawa T; Baba Y; Eya K; Toda K; Takano H, Right ventricular (RV) function is a limiting factor in maintaining systemic circulation with circulatory assist. There is, however, no easy way to institute RV assist, such as the intraarterial axial flow pump (Hemopump) used for left heart assist. In this study, the feasibility and hemodynamic effect of intravenous use of an axial flow pump was examined. A pump system was developed with an outflow cannula and an impeller that were newly designed for intravenous insertion with a Hemopump driving system. The pump system characteristics using goat blood at a hematocrit of 26% indicated that maximum flow at a pressure differential against 40 mmHg is 3.2 l/min at a pump speed of 28,000 rpm. The pump was tested in adult goats by intravenous insertion through a 14 mm, low porosity graft anastomosed to the infrarenal inferior vena cava. The pump was advanced until the tip of the cannula was positioned at the main pulmonary artery, using balloon catheter guidance under fluoroscopy. RV assistance was evaluated by pressure tracing, and aortic flow (AF) measured by electromagnetic flowmeter under 1) induced pulmonary stenosis (PS), and 2) electrically induced ventricular fibrillation (VF) in, ASAIO Journal
    ASAIO Journal, 01 Jul. 1994
  • Development and evaluation of components for a totally implantable artificial heart system
    Y. Taenaka; T. Masuzawa; E. Tatsumi; H. Anai; K. Toda; H. Akagi; T. Nakatani; Y. Baba; K. Eya; Y. Wakisaka; H. Takano; K. Koshiji; E. Shu; T. Utsunomiya; Y. Fukui, J.B. Lippincott Co
    ASAIO Journal, Jul. 1994
  • 遠心ポンプにおけるin-vitro 性能評価
    荒木賢二; 妙中義之; 増澤; 徹; 脇坂佳成; 中谷武嗣; 赤城治彦; 馬場雄造; 松尾義昭; 榊; 雅之; 穴井博文; 渡; 正伸.Young; Hwan; Park; 高野久輝
    人工臓器, Jun. 1994
  • Development of full-fill to full-empty drive control system of artificial hearts by measuring electrical impedance in a blood chamber with aoutomatic trigger level adjustment method for ejecting phase.
    ANAI H; NAKATANI T; SASAKI E; TAENAKA Y; AKAGI H; MASUZAWA T; BABA Y; ARAKI K; INOUE K; SAKAKI M; MATSUO Y; WATARI M; PARK Yh; TAKANO H, Continuous monitoring method of pump performance by measuring electrical impedance in a blood chamber was applied to the trigger system of full-fill to full-empty(F/E) drive control. An automatic trigger level adjustment method(ATAM) for settlement of a trigger level to change a phase from ejecting to filling was developed to maintain a definite stroke volume against changes of afterload or driving pressure. ATAM was an automatic searching algorism that can identfy the volume change of last ejection by impedance method and settle next trigger level to maintain a destination stroke volume. In a mock circuit and animal experiments, ATAM functioned satisfactorily to follow the changes of afterload and driving pressure and maintained definite stroke volume. In conclusion, this method was practical and useful in regulation of F/E driving., JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    Journal of the Japanese Society for Artificial Organs and Tissues, 1994
  • A Flow Visualization Study of the NCVC Centrifugal Blood Pump
    Kenji Araki; Yoshiyuki Taenaka; Toru Masuzawa; Eisuke Tatsumi; Yoshinari Wakisaka; Masanobu Watari; Takeshi Nakatani; Haruhiko Akagi; Yuzo Baba; Hirofumi Anai; Young Hwan Park; Kazuhiro Eya; Koichi Toda; Hisateru Takano
    Artificial Organs, 1994, [Reviewed]
  • Power of an in-situ latissimus dorsi muscle as an actuator for circulatory assistance
    Araki K; Nakatani T; Toda K; Sakaki M; Taenaka Y; Masuzawa T; Akagi H; Baba Y; Matsuo Y; Anai H; Watari M; Park Y, We evaluated the effect of dissecting site and preconditioning which may influence the power generated by an in-situ latissimus dorsi muscle (LDM). To evaluate dissecting sites, 3 un-preconditioned adult goats underwent dissection of the origin of one site and the insertion of the other site. The other 3 adult goats which underwent 10 week-preconditioning were dissected their insertion of LDMs. By contracting muscles under various load, tension-length relationships in end-contraction and end-relaxation and their regression lines were obtained, and the maximum area of a square drawn within both regression lines was assumed to be maximum external work (maxW) of a LDM. The mean maxW generated by the origin-dissected and insertion-dissected LDMs was 0.432 J and 0.732 J, respectively. The power of three preconditioned LDMs changed 0.175 to 0.109 Watts (15 minute-stimulation), 0.137 to 0.094 Watts (60 minutes) and 1.17 to 0.037 Watts (60 minutes) from the beginning to the end of stimulations, respectively. We concluded that the tension-length relationship was useful for evaluation of the generated power of LDMs, and insertion-dissected LDMs could generate higher power than origin-dissect, Japanese Journal of Artificial Organs
    Japanese Journal of Artificial Organs, 01 Jan. 1994
  • Development of full-fill to full-empty drive control system of artificial hearts by measuring electrical impedance in a blood chamber with automatic trigger level adjustment method for ejecting phase
    Anai H; Nakatani A; Sasaki E; Taenaka Y; Akagi H; Masuzawa T; Baba Y; Araki K; Inoue K; Sakaki M; Matsuo Y; Watari M; Park Y; Takano H, Continuous monitoring method of pump performance by measuring electrical impedance in a blood chamber was applied to the trigger system of full-fill to full-empty(F/E) drive control. An automatic trigger level adjustment method(ATAM) for settlement of a trigger level to change a phase from ejecting to filling was developed to maintain a definite stroke volume against changes of afterload or driving pressure. ATAM was an automatic searching algorism that can identify the volume change of last ejection by impedance method and settle next trigger level to maintain a destination stroke volume. In a mock circuit and animal experiments, ATAM functioned satisfactorily to follow the changes of afterload and driving pressure and maintained definite stroke volume. In conclusion, this method was practical and useful in regulation of F/E driving., Japanese Journal of Artificial Organs
    Japanese Journal of Artificial Organs, 01 Jan. 1994
  • An implantable left ventricular assist system with an electrical impedance monitoring and control system
    Nakatani T; Anai H; Taenaka Y; Akagi H; Masuzawa T; Baba Y; Sakaki M; Araki K; Inoue K; Matsuo Y; Takano H, The authors developed an implantable left ventricular assist system (LVAS) for bridge to transplant of rather small sized adults. The pump was made of segmented polyether polyurethane and was 86 mm in diameter, 50 mm in height, with a 70 ml nominal stroke volume. A percutaneous drive line was connected with an external pneumatic control drive unit (CDU). In chronic animal experiments using 11 adult goats, the pump was installed between the LV apex and the descending aorta and was placed in the abdominal wall. Five goats were killed after 4 to 14 weeks while in good physical condition, and one is ongoing. There were no prominent thromboembolic symptoms despite no anti- thrombogenic agent being used. The new electrical impedance-based monitoring and control system (Z system) was installed in the CDU. In this Z system, automatic calibration was performed periodically for several seconds while the drive condition was changed to ensure full-fill of the blood pump. The full-fill to full-empty drive was well controlled by this Z system. In conclusion, the new Z system is practical and useful for monitoring and control of an implantable pump, giving this LVAS a promising place in clinical, ASAIO Journal
    ASAIO Journal, 29 Oct. 1993
  • 長期使用可能な人工心臓用遠心ポンプの開発-溶血減少のためのインペラ形状変更とその効果-
    荒木賢二; 妙中義之; 増澤 徹; 井上和重; 中谷武嗣; 木下正之; 赤城治彦; 馬場雄造; 松尾義昭; 榊 雅之; 穴井博文; 高野久輝, We have developed a centrifugal blood pump for a long-term circulatory assistance, of which final goal is a completely implantable VAD or TAH. NCVC-0 centrifugal blood pump is characterized by non-seal, no shaft, magnet-couple driving and little disturbed flow, resulting in acquiring high durability and anti-thrombogenicity. To achieve an improvement of a pumping performance and hemolytic properties, the impeller of NCVC-0 was modified to that of NCVC-1; the profile shape was changed from flat to conical, the number of vanes from 4 to 6, the vane entrance angle from 30 to 60 degrees and the height was made wider. These modifications resulted that the revolution number to generate 100mmHg and 5L/min was decreased from 2850rpm of NCVC-0 to 2450rpm of NCVC-1 and that the hemolytic index was decreased to 0.013g/100L for NCVC-1 compared with 0.039g/100L for NCVC-0. We concluded that NCVC-1 centrifugal pump acquired a sufficient pumping performance and hemolytic property in addition to high durability and anti-thrombogenicity which were inherited by NCVC-0., JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    人工臓器, Jun. 1993
  • 体内完全埋込型を目指したエレクトロハイドローリック式全人工心臓の急性動物実験による性能評価
    妙中義之; 木下正之; 増澤 徹; 中谷武嗣; 赤城治彦; 榊 雅之; 松尾義昭; 井上和重; 馬場雄造; 穴井博文; 荒木賢二; 高野久輝; 藤田 毅, In vivo performance of an electrohydraulic total artificial heart was evaluated in acute experiments aiming at the establishment of a totally implantable system. The device consists of diaphragm-type ventricles and an electrohydraulic actuator placed in the abdominal region. The device was implanted in 2 goats of 50 and 49kg to evaluate anatomical fitting, surgical implantation procedure and hemodynamic performances. The pump fit well in the chest cavity and there was no difficulty in surgical procedure. An atrial septal defect was made to compensate the right to left imbalance of cardiac output. Hemodynamic parameters were maintained within a normal range, including atrial pressure, cardiac output, aortic pressure and pulmonary arterial pressure. The results indicated satisfactory in vivo performance of the artificial heart for future development of a totally implantable system., JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    人工臓器, Jun. 1993
  • A FLOW VISUALIZATION STUDY OF CENTRIFUGAL BLOOD PUMPS DEVELOPED FOR LONG-TERM USAGE
    K ARAKI; Y TAENAKA; T MASUZAWA; K INOUE; T NAKATANI; M KINOSHITA; H AKAGI; Y BABA; Y MATSUO; M SAKAKI; H ANAI; H TAKANO
    ARTIFICIAL ORGANS, May 1993
  • Effect of cardiomyoplasty on ventricular function with our compact electrical stimulator.
    SAKAKI M; NAKATANI T; ARAKI K; TAENAKA Y; KINOSHITA M; AKAGI H; MASUZAWA T; BABA Y; MATSUO Y; INOUE K; ANAI H; TAKANO H; OTA M; FUJITA T; MOROE T, The purpose of the study is to clarify the effect of cardiomyoplasty on ventricular function, especially on right ventricular function. The experiment was performed with the left latissimus dorsi muscle (LDM) in 4 normal heart goats. After electrically conditioned for 6 to 8 weeks, the pedicled LDM were sutured around the ventricles clockwise and stimulated synchronously with our compact electrical stimulator. Our stimulator showed a good quality during the experiment To evaluate the ventricular function, systolic pulmonary arterial pressure (sPAP), right ventricular ejection fraction (RVEF), cardiac output (CO), systolic left ventricular pressure and maximal end-systolic volume elastance (Ees) with and without stimulation were measured. Although no significant changes were observed in these data, sPAP (29±3 mmHg vs 26±3 mmHg), RVEF (42±8% vs 37±8%) and CO (6.0±0.7 L/min vs 5.3±1.4 L/min) showed a tendency to increase. We considered that cardiomyoplasty with electrically conditioned LDM could play an important part to improve the right ventricular function., JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    Journal of the Japanese Society for Artificial Organs and Tissues, 1993
  • Cardiac output estimation model with a neural network toward total artificial heart control               
    Toru Masuzawa; Yoshiyuki Taenaka; Masayuki Kinoshita; Takeshi Nakatani; Haruhiko Akagi; Hisateru Takano; Yasuhiro Fukui, Publ by IEEE
    Proceedings of the Annual Conference on Engineering in Medicine and Biology, 1993
  • Diastolic mechanics of a skeletal muscle pump system actuated by in-situ bilateral latissimus dorsi muscles
    Araki K; Nakatani T; Sakaki M; Matsuo Y; Taenaka Y; Kinoshita M; Masuzawa T; Akagi H; Baba Y; Inoue K; Anai H; Takano H, Japanese Journal of Artificial Organs
    Japanese Journal of Artificial Organs, 01 Jan. 1993
  • In vivo performance of an electrohydraulic total artificial heart toward the development of a totally implantable system
    Taenaka Y; Kinoshita M; Masuzawa T; Nakatani T; Akagi H; Sakaki M; Matsuo Y; Inoue K; Baba Y; Anai H; Araki K; Takano H; Fujita T, Japanese Journal of Artificial Organs
    Japanese Journal of Artificial Organs, 1993
  • The development of a centrifugal blood pump for a long-term usage - Modifications of the impeller and its effect on the hemolytic property
    Araki K; Taenaka Y; Masuzawa T; Inoue K; Nakatani T; Kinoshita M; Akagi H; Baba Y; Matsuo Y; Sakaki M; Anai H; Takano H, Japanese Journal of Artificial Organs
    Japanese Journal of Artificial Organs, 01 Jan. 1993
  • Development of continuous monitoring and control system of artificial heart by measuring electrical impedance in a blood chamber with automatic calibration mechanism
    Anai H; Nakatani T; Sasaki E; Taenaka Y; Kinoshita M; Akagi H; Masuzawa T; Baba Y; Sakaki M; Inoue K; Matsuo Y; Araki K; Takano H, Japanese Journal of Artificial Organs
    Japanese Journal of Artificial Organs, 01 Jan. 1993
  • A new ventilator system for liquid breathing driven by a linear motor
    Baba Y; Taenaka Y; Tsukahara K; Akagi H; Nakatani T; Kinoshita M; Masuzawa T; Sakaki M; Inoue K; Matsuo Y; Anai H; Araki K; Ohumi T; Takano H, Japanese Journal of Artificial Organs
    Japanese Journal of Artificial Organs, 01 Jan. 1993
  • A model of cardiovascular system using a neural network technique
    MASUZAWA T.; KINOSHITA M.; TAENAKA Y.; NAKATANI T.; AKAGI H.; TAKANO H., A model of the cardiovascular system was developed using a neural network technique. A treadmill exercise experience was performed to obtain the physiological signals during the exercise with a goat. The blood pressure catheter and blood flow prove were implanted in the chest and the exercise tests were performed after two weeks of the operation. The model to estimate cardiac output from heart rate, mean arterial pressure, mixed venous saturation and physical activity that were obtained from the exercise experience was constructed based on a neural network technique. A three-layer back-propagation network, which has the input layer with forty two cells, the hidden layer with thirty two cells and the output layer with 10 cells, was used to construct the model. Five hundred and forty six sets of data were used for learning process of the network. Seventy sets of the learning data and sixty six sets of data which were not used for learning were used to evaluate the performance of the cardiac output estimation. The correlation coefficient between the learning data and real cardiac output was 0.965 (p<0.001) and that for the non-learning data was 0.869 (p<0.001) and the feasibility of the neural network for modeling of cardiovascular system was confirmed., JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    人工臓器, 1993
  • A bioartificial ventricle used as a totally implantable circulatory assist device
    Takeshi Nakatani; Akio Kishida; Takehisa Matsuda; Masayuki Sakaki; Masahiro Goto; Yoshiyuki Taenaka; Masayuki Kinoshita; Haruhiko Akagi; Toru Masuzawa; Yuzo Baba; Kenji Araki; Kazushige Inoue; Hirohumi Anai; Yoshiaki Matsuo; Hisateru Takano
    Trans Am Soc Artif Intern Organs, Jul. 1992
  • Pulmonary function in a non-pulsatile pulmonary circulation
    Masayuki Sakaki; Yoshiyuki Taenaka; Eisuke Tatsumi; Takeshi Nakatani; Masayuki Kinoshita; Haruhiko Akagi; Toru Masuzawa; Yoshiaki Matsuo; Kazushige Inoue; Yuzo Baba; Hirohumi Anai; Kenji Araki; Hisateru Takano Tsutomu Kasugai
    Trans Am Soc Artif Intern Organs, Jul. 1992
  • Permeation of silicone oil through a diaphragm in an electrohydraulic ventricular assist system
    Yoshiaki Matsuo; Yoshiyuki Taenaka; Hisateru Takano; Takeshi Nakatani; Toru Masuzawa; Haruhiko Akagi; Masayuki Kinoshita; Yuzo Baba; Masayuki Sakaki; Takeharu Ohumi; Kinji Tsukahara; Katsuya Tsuchimoto; Tetsuzo Akutsu
    Trans Am Soc Artif Intern Organs, Jul. 1992
  • Influence of an impeller centrifugal pump on blood components in chronic animal experiments
    Yoshiyuki Taenaka; Kazushige Inoue; Toru Masuzawa; Kenji Araki; Masayuki Sakaki; Yoshiaki Matsuo; Haruhiko Akagi; Takeshi Nakatani; Masayuki Kinoshita; Yuzo Baba; Hirifumi Anai; Hisateru Takano
    Trans Am Soc Artif Intern Organs, Jul. 1992
  • 小型多機能補助循環駆動装置の開発
    中谷武嗣; 佐々木栄作; 穴井博文; 妙中義之; 木下正之; 巽英介; 増澤徹; 赤城治彦; 後藤昌弘; 松尾義昭; 榊雅之; 井上和重; 馬場雄造; 高野久輝; 近城賢一; 橋本浩一; 池田稔, We have built a new compact control drive unit (CDU) which can be used for a ventricular assist system (VAS) or intraaortic balloon pumping (IABP). This CDU has an installed air compressor, a vacuum unit, a battery, full alarm and backup systems, an automatic level control of flow and atrial pressure for VAS, and a full-fill to full-empty drive mode controlled by air flow. This CDU exhibited satisfactory and stable performance in mock circulation, animal studies and clinical cases. This new compact CDU is thought to be useful in clinical setting., JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    人工臓器, Apr. 1992
  • 無拍動流肺循環の肺におよぼす影響に関する実験的検討-慢性期,覚醒状態下において-
    榊雅之; 妙中義之; 巽英介; 中谷武嗣; 赤城治彦; 増澤徹; 後藤昌弘; 佐々木栄作; 井上和重; 松尾義昭; 馬場雄造; 穴井博文; 高野久輝, As a centrifugal pump was widely used for eltracorporeal circulation in recent years, the clarification of the influences of nonpulsatile blood flow on physiological function has become more important, especially in pulmonary function. To analyze the influences, nonpulsatile pulmonary blood flow by a centrifugal pump was established in chronic animal models. A pulsatile RVAS was implanted to draw the blood from both the right atrium and ventricle and to send to the pulmonary artery in 4 goats. Two weeks after implanted, the pulsatile pump was quickly replaced by a centrifugal pump without anesthesia and a 100% nonpulsatile pulmonary blood flow was obtained. Cardiac output was kept at 80-120 ml/kg/min during the experiments and no changes were observed in hemodynamic parameters after the immediate depulsation of the pulmonary flow. Blood gas data and serum levels of angiotensin converting enzyme were maintained within normal range. There was no significant change in the ventral to dorsal blood perfusion ratio of the lower lobe of right lung which was calculated by the colored microsphere method, between pulsatile and nonpulsatile pulmonary flow. These results suggested that pulmonary functions including gas exchange and metabolism of vasoactive agent and lung tissue perfusion were not affected by nonpulsatile pulmonary circulation., JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    人工臓器, Apr. 1992
  • 左室圧-容積関係を用いたcardiomyoplastyの左心補助効果に関する実験的検討
    後藤昌弘; 中谷武嗣; 榊雅之; 妙中義之; 巽英介; 赤城治彦; 増澤徹; 佐々木栄作; 馬場雄造; 松尾義昭; 井上和重; 藤田毅; 高野久輝, Cardiomyoplast (CMP) has been performed for heart failure patients. The evaluation of cardiac function under CMP, however, was difficult and the performance of CMP was unclear in clinical cases. In order to clarify the effect of CMP, we applied left ventricular pressure-volume loops relationship using a conduct-ance catheter (CC) in acute animal expert-ments. In normal heart goats (n=5), electrically preconditioned latissimus dorsi muscle flap (LDMF) was sutured around the ventricle counterclockwise and was stimulated synchronously by the electrical stimulator with bursts. The left ventricular volume was measured using a CC with and without LDMF stimulation. Maximal end-systolic volume elastance (Ees) was determined from multiple pressure-volume loops obtained during a brief preload reduction by occlusion of an inferior vena cava. There are no significant differences in Ees, stroke volume, left ventricular(LV) end-diastolic pressure, LV end-systolic pressure and end-diastolic volume between, with and without LDMF stimulation. These data showed that the CMP did not affect LV performances of normal heart in goats. However, a CC was useful to evaluate LV functions and to avoid the limitation of cardiac diastolic movement with CMP., JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    人工臓器, Apr. 1992
  • 胎盤を用いたハイブリッド型呼吸補助システムの試作
    赤城治彦; 高野久輝; 妙中義之; 中谷武嗣; 木下正之; 馬場雄造; 巽英介; 増澤徹; 後藤昌弘; 井上和重; 榊雅之; 松尾義昭; 穴井博文; 荒木賢二, A novel hybrid respiratory support system was developed using a human placenta. In this system, patient's blood is oxygenated with 02 saturated artificial blood across villous membrane during passage through the fetal circuit of a placenta which is placed in a specially constructed artificial uterus. Human term placentas were obtained immediately after vaginal delivery and served for experiments. The gas transfer performance of the system was 60 ml/min for O2 and 40 ml/min for CO2 at a blood flow rate of 1l/min. From these results and assured antithrombogenicity of the placenta, we conclude that this system will become one of the most promising modalities for prolonged extracorporeal oxygenation without anticoagulant., JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    人工臓器, Apr. 1992
  • A motor integrated regenerative pump as the actuator of an electrohydraulic totally implantable artifical heart. (jointly authored)
    T. Masuzawa; Y. Taenaka; M. Kinoshita; T. Nakatani; H. Akagi; H. Takano; Y. Fukui; H. Sasagawa; K. Takahashi
    Trans Am Soc Artif Intern Organs, 1992
  • 腹壁内埋込み型左心補助人工心臓に関する基礎的検討
    中谷武嗣; 後藤昌弘; 妙中義之; 巽英介; 赤城治彦; 佐々木栄作; 増澤徹; 松尾義昭; 関井浩義; 矢倉明彦; 高野久輝, As the initial stage of development of implantable left ventricular assist system (VAS), the blood pump system was designed to be positioned in the left abdominal wall. The pump is a pneumatic and diaphragm-type modified from NCVC VAS made of Japanese-made segmented polyether polyurethane. Inflow cannula was reinforced at the distal portion. The pump was connected by inflow and outflow cannulae between the left ventricular apex and the descending aorta, and was connected to the external console by a percutaneous tube. In animal experiments using goats, this system showed easy applicability and stable hemodynamics over three weeks. There was no signs of infection around the pocket of pump. In conclusion, this blood pump system is safely applicable to long-term left ventricular assist., JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    人工臓器, Aug. 1991
  • Serum silicon levels in recipients of an electrohydraulic ventricular assist system
    Yoshiaki Matsuo; Yoshiyuki Taenaka; Hisateru Takano; Takeshi Nakatani; Eisuke Tatsumi; Toru Masuzawa; Masahiro Goto; Akihiko Yagura; Haruhiko Akagi; Eisaku Sasaki; Kazusige Inoue; Masayuki Sakaki; Yuzo Baba; Tetsuzou Akutsu; Takeharu Ohumi; Kinji Tsukahara
    ASAIO Transactions, Jul. 1991, [Reviewed]
  • Chronic evaluation of a compact nonseal magnet pump as a nonpulsatile pump for long-term use
    Yoshiyuki Taenaka; Eisuke Tatsumi; Masayuki Sakaki; Eisaku Sasaki; Toru Masuzawa; Takeshi Nakatani; Haruhiko Akagi; Masahiro Goto; Yoshiaki Matsuo; Kazushige Inoue; Yuzo Baba; Masayuki Kinoshita; Hisateru Takano
    ASAIO Transactions, Jul. 1991, [Reviewed]
  • Peripheral circulation during nonpulsatile systemic perfusion in chronic awake animals
    Yoshiyuki Taenaka; Eisuke Tatsumi; Masayuki Sakaki; Eisaku Sasaki; toru Masuzawa; Takeshi Nakatani; Haruhiko Akagi; Masahiro Goto; Yoshiaki Matsuo; Kazushige Inoue; Yuzo Baba; Masayuki Kinoshita; Hisateru Takano
    ASAIO Transactions, Jul. 1991, [Reviewed]
  • Hybrid respiratory support system with extracorporeal placental oxygenation
    Haruhiko Akagi; Hisateru Takano; Yoshiyuki Taenaka; Takeshi Nakatani; Eisuke Tatsumi; Toru Masuzawa; Masahiro Goto; Eisaku Sasaki; Kazushige Inoue; Masayuki Sakaki; Yoshiaki Matsuo; Yuzo Baba
    ASAIO Transactions, Jul. 1991, [Reviewed]
  • Integrated artificial heart-lung device
    Eisuke Tatsumi; Hisateru Takano; Yoshiyuki Taenaka; Haruhiko Akagi; Takeshi Nakatani; Eisaku Sasaki; Masahiro Goto; Toru Masuzawa; Masayuki Sakaki; Yoshiaki Matsuo; Kazushige Inoue; Jun Kamo; Takanobu Aoyagi
    ASAIO Transactions, Jul. 1991, [Reviewed]
  • 完全体内埋込型エレクトロハイドローリック式全人工心臓の開発のための基礎的検討
    妙中義之; 増澤 徹; 中谷武嗣; 矢倉明彦; 巽 英介; 関井浩義; 佐々木栄作; 赤城治彦; 後藤昌弘; 榊 雅之; 松尾義昭; 井上和重; 高野久輝, An electro-hydraulic total artificial heart system consisted of a separately placed actuator and blood pumps was designed. In the actuator a brushless DC motor is sandwiched by 2 pusher-plate pumps connected with the blood pumps by flexible tubes. A roller-screw system is employed for alternative pumping and silicone oil is used to trans-mit the action. The pumps were implanted in 4 goats of 54-59 kg as a pneumatic sys-tem. The longest survivor could be maintained for 40 days. The system could yield around 6L/min in an in vitro evaluation., JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    人工臓器, Jun. 1991
  • 補助人工心臓からの離脱に有用な新しい駆動法を搭載した多機能補助循環駆動装置の開発と評価
    佐々木栄作; 中谷武嗣; 高野久輝; 妙中義之; 巽英介; 赤城治彦; 関井浩義; 矢倉明彦; 後藤昌弘; 増澤徹; 榊誠之; 松尾義昭; 池田稔, We have built a new drive unit (VCT200) which can drive both IABP and LVAS in the same way as separate units. And we devised a new weaning method, Alternate Synchronous Driving (ASD), to wean from LVAS to IABP smoothly. ASD was installed in VCT200 to be applied easily and automatically. After IABP insertion in the final weaning stage, ASD drives LVAS and IABP alternately, with electrocardiogram synchronization. The pumping ratio of IABP increases while that of LVAS decreases according to the recovery of natural heart function. In vitro and in vivo studies, ASD was effective method to prevent hemodynamic deterioration during final weaning from LVAS and overlap in pump ejection and balloon inflation., JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    人工臓器, 1991
  • エレクトロハイドローリック方式補助人工心臓システムの改良と慢性動物実験による性能評価
    松尾義昭; 矢倉明彦; 妙中義之; 高野久輝; 中谷武嗣; 巽英介; 赤城治彦; 関井浩義; 佐々木栄作; 後藤昌弘; 増澤徹; 榊雅之; 阿久津哲造; 大海武晴; 土本勝也, We estimated the EHVAS in 4 goats and examined the effect of the automatic negative pressure control (ANPC) mechanism to prevent atrial wall sucking. ANPC regulates the filling power of the actuator automatically by monitoring sillicone oil pressure. Our EHVAS could be operated for 21-42 days. When ANPC was not used, instantaneous left atrial pressure during filling phase was-40mmHg, however, it was-10mmHg by using ANPC. ANPC could prevent atrial wall sucking. Our EHVAS could become a portable VAS., JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    人工臓器, 1991
  • 実験動物の無拍動流体循環への生理学的適応過程の検討
    妙中義之; 巽英介; 榊雅之; 佐々木栄作; 中谷武嗣; 赤城治彦; 関井浩義; 矢倉明彦; 後藤昌弘; 増澤徹; 松尾義昭; 井上和重; 高野久輝, A pulsatile left ventricular assist device was quickly replaced by a centrifugal pump without anesthesia in 5 goats 2 weeks after surgery. A 100% bypass of nonpulsatile systemic flow was immediately obtained and the pump was controlled to maintain the same mean aortic pressure as before the switch. Central venous pressure, cardiac output, systemic vascular resistance, oxygen consumption, blood lactate, and plasma adrenalin, noradrenalin, renin activity, angiotensin II and aldosterone did not deviate from the control levels., JAPANESE SOCIETY FOR ARTIFICIAL ORGANS
    人工臓器, 1991
  • The blood pressure control system with abnormal control phase recognition
    MASUZAWA Toru, A study is presented of a blood pressure control system with safety feature in therapeutic practice. Using fuzzy logic, the physician's heuristic rules for control were transformed into automatic control rules. Fuzzy controller has two input variables (the difference between the actual and target pressures, the increment of blood pressure) and one output variable (the variation in the drug dosage) expressed as a fuzzy variable by establishing corresponding membership functions. 25 control rules were converted into fuzzy control rules. As safety feature, the control phases recognition function was developed by using TMSTR (Time-sequential Multiple State Transition Representation) technique which is devised to represent time-sequential data transition with IF-THEN rule structure. The function is observing time-trend of blood pressure and drug infusion rate during control. The function takes over control from the fuzzy controller when abnormal control phases are recognized. To evaluate the present system, the pressure elevation simulation and animal experiments were performed. The blood pressure was elevated from the ordinary level (about 100 mmHg) to 150 mmHg by infusing the vasopressor. Excellent blood pressure control was achieved in both of simulation and experiments, and the overall effectiveness of the present control system was verified., The Japan Society for Precision Engineering
    精密工学会誌, Aug. 1990
  • An electorohydraulic total artificial heart with a separately placed actuator
    Y.Taenaka; H.Sekii; E.Tatsumi; T.Nakatani; E.Sasaki; A.Yagura; H.Akagi; T.Masuzawa; M.Goto; Y.Matsuo; And H.Takano
    ASAIO Transaction, 1990
  • 時系列信号の推移認識に基づいた制御-血圧自動制御への応用-
    増澤 徹; 福井康裕, 電子情報通信学会情報・システムソサイエティ
    電子情報通信学会論文誌DⅡ, Nov. 1989
  • Knowledge-based approach to intelligent alarms
    Yasuhiro Fukui; Toru Masuzawa, Kluwer Academic Publishers
    Journal of Clinical Monitoring, Jul. 1989
  • ファジィ血圧制御システムの開発
    福井康裕; 増澤 徹
    医用電子と生体工学, Jun. 1989
  • 介助用小型軽量マニプレータの開発
    藤記拓也; 土肥健純; 増澤 徹, In these several years, the number of aged people in Japan has increased, and for some other reasons, there has risen the problem of people who take care of the bedridden patients in daily life. And it is.expected that this kind of probkem would be more serious in the future. As one solution to the this problem, we've developed some manipulator systems which aid the nursing of bedridden patients. But the traditional manipulator is not powerful enough to be used in practice.In order to overcome this disadvantage in power, we developed a new type manipulator which is more powerful than the traditional one, by using the wire-driving mechanism. This mechanism has been thought to be useless, because the length of wire changes as the load changes, and it is difficult to know the precise position of the end effector. This time, we have solved this problem by putting high resolution encoders at each joint and sensing the displacement of the joints directly. As the result, we succeeded in developing a new type manipulator more powerful than the traditional one. And for controllability, we took the dual-PID control algorithm and improved the controlling characteristic., THE SOCIETY OF LIFE SUPPORT ENGINEERING
    エル・エス・ティ学会誌, May 1989
  • 帯磁コンタクトレンズを用いた無拘束眼球運動計測システムの開発
    鎮西清行; 土肥健純; 増澤 徹, Nystagmus measurement is quite useful and popular for equilibrium function test. To measure it, several kinds of methods. for example, Electro-Nystagmography(ENG, orEOG) are developed and clinically used. But they have some problems. To solve those problems, such as the drift or noise on the output signal, or the improper restriction of the free movement of the subject's body and eyeball, we propose the following new measuring method. We adopted the magnetic measuring method, and constructed a prototype system. In this system, a set of magnetic sensors detects magnetic flux density of the magnetic contact lens. worn on the eyeball of the subject And using this system, we confirm the availability of this system., THE SOCIETY OF LIFE SUPPORT ENGINEERING
    エル・エス・ティ学会誌, May 1989
  • Development of Fuzzy Blood Pressure Control System
    Yasuhiro Fukui; Toru Masuzawa
    Japanese Journal of Medical Electronics and Biological Engineering, 1989
  • マン・マシン・インターフェースを考慮した聴覚障害児童のための発声発語訓練装置の開発
    楢原弘之; 土肥健純; 堀内孝; 増澤徹, In this report, a basic principle of designing on effective man-machine interface is given to construct a speech training system based upon the information theory. Although the speech training system has been developed by our group, its evaluation in a field-testing indicated a need for correction in this system. In order to keep trainee's attention, a program on the display has to be attractive. Concerning these problems the newly designed inexpensive training system is constructed using the home computer MSX 2 and the speech processing interface board. The signals are picked up by a microphone, and then pass through a low pass filter which cut-off frequency is controllable by the micro computer. The analogue signals are converted to digital ones by the A/D convertor. The signal processor (μPD 7720) is adopted to find the peaks of the power spectrum which is realized by the cascaded 4 signal processors arrangement. Using the MSX 2 graphic functions, the result of this analysis is presented to trainee. This system could be utilized in the first three stage of speech training; basic vocalization;intensity, duration, pitch; pronounciation of specific vowels and dipthongs., Japanese Society of Medical Instrumentation
    医科器械学, 01 Aug. 1988
  • アウターロータ型5軸制御セルフベアリングモータの開発               
    松田 健一; 寺山 昌幸; 近藤 良; 増澤 徹
    日本機械学会論文集C編, 25 May 1911, [Reviewed]

MISC

Books and other publications

  • 磁気浮上技術の原理と応用               
    Contributor
    科学情報出版株式会社, 26 Mar. 2018
    9784904774656
  • Mechanical Circulatory and Respiratory Support               
    Edited by Gregory; Stevens & Fraser, Joint work
    Elsevier, Academic Press, 04 Oct. 2017
    9780128104910
  • 南山堂医学大辞典 第20版               
    Joint work
    南山堂, 01 Apr. 2015
  • 増補新訂版 人工臓器は,いま               
    Joint work
    はる書房, 25 Dec. 2012
  • ひとの暮らしと表面科学(現代表面科学シリーズ5)               
    日本表面科学会編集, Joint work
    共立出版株式会社, 25 Jul. 2011
    9784320033702
  • Advanced Bio/Medical Devices and Equipments for Health Care               
    Supervisor: Kohji Mitsubayashi, Joint work
    CMC books, 29 May 2009
    9784781301204
  • 人工臓器イラストレテッド               
    日本人工臓器学会編集, Joint work
    はる書房, 05 Nov. 2007
    9784899840800
  • 人工臓器は,いま               
    日本人工臓器学会編集, Joint work
    はる書房, 07 Nov. 2003
    4899840454
  • Clinical application of Computational Mechanics to the Cardiovascular System, T. Yamaguchi(Ed.)               
    Joint work
    Springer, 2000
  • ME用語辞典               
    日本エム・イー学会編, Joint work
    コロナ社, Sep. 1999

Lectures, oral presentations, etc.

  • 人工心臓のためのハイブリッドMR流体変速機の研究
    小川夏輝; 北山文矢; 増澤徹; 佐藤樹; 長真啓
    第33回ライフサポート学会フロンティア講演会, 06 Mar. 2024
    20240306, 20240307
  • 体内植込み型小児用補助人工心臓のための小型・扁平磁気浮上モータの研究               
    河村幹也; 長真啓; 北山文矢; 増澤徹; 西中知博
    第33回ライフサポート学会フロンティア講演会, 06 Mar. 2024
    20240306, 20240307
  • アキシャル型全人工心臓用磁気浮上モータの改良
    江藤絢平; 増澤徹; 今野美紗紀; 桑本真子; 北山文矢; 長真啓
    第33回ライフサポート学会フロンティア講演会, 06 Mar. 2024
    20240306, 20240307
  • ホモポーラ型磁気浮上モータを用いた全置換型人工心臓の研究
    鈴木修太; 増澤徹; 長真啓; 北山文矢; 信太宗也
    第33回ライフサポート学会フロンティア講演会, 06 Mar. 2024
    20240306, 20240307
  • 磁気浮上血液ポンプにおけるスクイーズ効果の検討               
    谷平健心; 増澤徹; 後藤結帆; 長真啓; 北山文矢
    第33回ライフサポート学会フロンティア講演会, 06 Mar. 2024
    20240306, 20240307
  • ホモポーラ型磁気浮上モータを用いた全置換型人工心臓の制御システムの構築               
    平口航士朗; 増澤徹; 佐藤光志朗; 鈴木修太; 長真啓; 北山文矢
    第33回ライフサポート学会フロンティア講演会, 06 Mar. 2024
    20240306, 20240307
  • 5軸制御セルフベアリングモータの三相駆動・制御システムの開発               
    村山優心; 長真啓; 長澤優樹; 北山文矢; 増澤徹
    第33回ライフサポート学会フロンティア講演会, 06 Mar. 2024
    20200306, 20240307
  • 磁気浮上式血液ポンプにおける粘性流体送液時のインペラ支持性能               
    長真啓; 増澤徹; 北山文矢; 西中知博; 築谷朋典; 巽英介
    第32回MAGDAコンファレンスin 金沢, 27 Nov. 2023
    20231127, 20231128
  • ホモポーラ型磁気浮上モータを用いた全置換型人工心臓
    鈴木修太; 増澤徹; 長真啓; 信太宗也; 北山文矢
    第32回MAGDAコンファレンスin 金沢, 27 Nov. 2023
    20231127, 20231128
  • 人工心臓のためのハイブリッドMR流体変速機
    佐藤樹; 増澤徹; 北山文矢; 長真啓
    第32回MAGDAコンファレンスin 金沢, 27 Nov. 2023
    20231127, 20231128
  • 小児用補助人工心臓用磁気浮上モータのセンサレス制御化               
    小橋優輝; 長真啓; 増澤徹; 北山文矢; 西中知博
    第32回MAGDAコンファレンスin 金沢, 27 Nov. 2023
    20231127, 20231128
  • Pediatric ventricular assist device and artificial hearts with magnetic levitation mechanism               
    Toru Masuzawa
    11th Asan Medical Center Biomedical Engineering Center Symposium, 16 Nov. 2023
    20231116, 20231116
  • Magnetic bearing of maglev total artificial heart               
    Toru MASUZAWA; Misaki KONNO; Mako KUWAMOTO; Masahiro OSA; Fumiya KITAYAMA
    21st International Symposium on Applied Electromagnetics and Mechanics, 14 Nov. 2023
    20231112, 20231115
  • NPOオーファンデバイス研究開発の設立               
    増澤徹; 小野稔; 松宮護郎; 岸田晶夫
    第61回日本人工臓器学会大会, 11 Nov. 2023
    20231109, 20231111
  • Magnetic Levitation Technology for MCS               
    TORU MASUZAWA
    The 29th annual meeting of The International Society for Mechanical Circulatory Support, 30 Oct. 2023, [Invited]
    20231030, 20231101
  • Magnetic levitation technology for artificial heart               
    Toru Masuzawa
    APSAO 2023 Conference, 25 Sep. 2023, [Invited]
    20230925, 20230926
  • 完全置換型磁気浮上人工心臓の流量バランス制御機能向上のための研究
    桑本真子; 増澤徹; 長真啓; 信太宗也; Daniel L Timms
    Life2023, 19 Sep. 2023
    20230919, 20230921
  • 小児用磁気浮上型補助人工心臓の粘性液体下におけるポンプ性能とインペラ支持性能評価               
    佐藤遼一郎; 長真啓; 増澤徹; 北山文矢
    第31回茨城講演会, 18 Aug. 2023
    20230818, 20230818
  • 分割巻線を用いた磁気浮上小児用補助人工心臓の性能評価               
    長澤優樹; 長真啓; 北山文矢; 増澤徹
    第31回茨城講演会, 18 Aug. 2023
    20230818, 20230818
  • チタン合金壁通過型渦電流変位センサの特性評価               
    菅原槙人; 増澤徹; 長真啓; 北山文矢; 柴健次
    第31回茨城講演会, 18 Aug. 2023
    20230818, 20230818
  • ラジアル型全人工心臓用磁気浮上モータの改良               
    佐藤光志朗; 増澤徹; 鈴木修太; 長真啓; 北山文矢
    第31回茨城講演会, 18 Aug. 2023
    20230818, 20230818
  • 体内植込型全人工心臓のためのホモポーラ型磁気浮上モータ               
    鈴木修太; 増澤徹; 川口哲平; 長真啓; 北山文矢
    第35回「電磁力関連のダイナミクス」シンポジウム, 12 Jun. 2023
    20230612, 20230614
  • 出力シャフトに永久磁石を配置した人工心臓用MR変速機               
    北山文矢; 増澤徹; 佐藤樹; 長真啓
    第35回「電磁力関連のダイナミクス」シンポジウム, 12 Jun. 2023
    20230612, 20230614
  • 体内埋め込みを目指した磁気浮上型小児用人工心臓の駆動システムの研究開発               
    長澤優樹; 長真啓; 北山文矢; 増澤徹
    第32回ライフサポート学会フロンティア講演会, 13 Mar. 2023
    20230313, 20230314
  • ホモポーラ型磁気軸受を用いたラジアル型磁気浮上全人工心臓の研究               
    佐藤光志朗; 増澤徹; 長真啓; 北山文矢
    第32回ライフサポート学会フロンティア講演会, 13 Mar. 2023
    20230313, 20230314
  • 人工心臓のためのハイブリッド型MR流体変速機の研究               
    佐藤樹; 増澤徹; 北山文矢; 長真啓
    第32回ライフサポート学会フロンティア講演会, 13 Mar. 2023
    20230313, 20230314
  • 低損失・高い磁気支持性能を有する小児用補助人工心臓用磁気浮上モータの研究               
    佐藤遼一郎; 長真啓; 北山文矢; 増澤徹
    第32回ライフサポート学会フロンティア講演会, 13 Mar. 2023
    20230313, 20230314
  • 磁気浮上補助人工心臓のための小型制御システムの開発               
    齋藤広明; 増澤徹; 長真啓; 北山文矢
    第32回ライフサポート学会フロンティア講演会, 13 Mar. 2023
    20230313, 20230314
  • 磁気浮上技術と人工心臓               
    増澤徹
    第32回ライフサポート学会フロンティア講演会, 13 Mar. 2023, [Invited]
    20230313, 20230314
  • Magnetic Suspension Stability of a Compact Axial Flux Self-Bearing Motor for Implantable Pediatric Rotary Blood Pumps               
    Osa Masahiro; Toru Masuzawa
    18th International Symposium on Magnetic Bearings, 19 Feb. 2023
    20230218, 20230221
  • 小児用補助人工心臓のための磁気浮上型遠心ポンプの性能評価               
    長真啓; 増澤徹; 西中知博; 築谷朋典; 水野敏秀; 梅木昭秀; 巽英介
    第51回人工心臓と補助循環懇話会学術集会, 17 Feb. 2023
    20230217, 20230218
  • 小児用補助人工心臓用5軸制御セルフベアリングモータの駆動系簡素化の検討               
    長真啓; 増澤徹; 北山文矢; 西中知博; 巽英介
    第31回MAGDAコンファレンス, 01 Nov. 2022
    20221101, 20221102
  • 磁気浮上人工心臓のための制御周波数の検討               
    齋藤広明; 増澤徹; 長真啓; 北山文也
    第31回MAGDAコンファレンス, 01 Nov. 2022
    20221101, 20221102
  • Magnetically levitated mechanical circulatory support systems               
    T. Masuzawa; M. Osa; T. Nishinaka; D. Timms
    the 48th Annual Congress of the European Society for Artificial Organs, 10 Sep. 2022
    20220906, 20220910
  • 小児用補助人工心臓用磁気浮上モータの外径拡大による高支持力・高トルク化の検討               
    小橋優輝; 長真啓; 増澤徹; 西中智博
    第30回茨城講演会, 19 Aug. 2022
    20220819, 20220819
  • 両心室シャント構造を持つ完全置換型磁気浮上人工心臓のポンプ性能               
    桑本真子; 増澤徹; 長真啓; 信太宗也; Daniel L Timms
    第30回茨城講演会, 19 Aug. 2022
    20220819, 20220819
  • 体内埋込み型磁気浮上式小児用補助人工心臓の動物実験に向けた改良               
    長真啓; 増澤徹; 西中知博; 築谷朋典; 巽英介
    第34回「電磁力関連のダイナミクス」シンポジウム, 11 May 2022
    20220511, 20220513
  • 磁気浮上人工心臓における制御周波数と浮上安定性の関係               
    齋藤広明; 増澤徹; 長真啓
    第34回「電磁力関連のダイナミクス」シンポジウム, 11 May 2022
    20220511, 20220513
  • 小児用補助人工心臓用磁気浮上モータの省エネルギー化と支持性能の向上               
    小橋優輝; 増澤徹; 長真啓
    第31回ライフサポート学会フロンティア講演会, 07 Mar. 2022
    20220307, 20220308
  • 複合低エネルギーを用いた自己接合型脱血管の実用化に向けた検討               
    鈴木修太,増澤徹,長真啓,西中智博
    第31回ライフサポート学会フロンティア講演会, 07 Mar. 2022
    20220307, 20220308
  • 磁気浮上型小児用補助人工心臓の高度化に関する研究               
    山下俊大; 増澤徹; 長真啓; 巽英介; 西中智博
    第31回ライフサポート学会フロンティア講演会, 07 Mar. 2022
    20220307, 20220308
  • ホモポーラ磁気軸受を用いた人工心臓磁気浮上モータの研究開発               
    川口哲平; 増澤徹; 長真啓
    第31回ライフサポート学会フロンティア講演会, 07 Mar. 2022
    20220307, 20220308
  • テンセグリティ細胞模擬ロボットのソレノイドアクチュエータの検討               
    桑本真子,増澤徹,長真啓
    第31回ライフサポート学会フロンティア講演会, 07 Mar. 2022
    20220307, 20220308
  • 小児用補助人工心臓用磁気浮上モータの異なる制御軸数における磁気支持性能と電力特性の評価               
    山下俊大; 増澤徹; 長真啓; 巽英介; 西中知博
    第30回MAGDAコンファレンス, 06 Dec. 2021
    20211206, 20211206
  • 改良型遠心ポンプの改善点報告と実機評価,小型遠心血液ポンプを用いた磁気浮上型小児用補助人工心臓の研究開発               
    長真啓; 山下俊大; 増澤徹; 西中知博; 築谷朋典; 水野敏秀; 片桐伸将; 巽英介; 柳園宣紀; 一ノ瀬高紀
    日本定常流ポンプ研究会学術集会202, 27 Nov. 2021
    20211127, 20211127
  • 乳幼児用体内埋込み型補助人工心臓開発に向けた数値流体解析による磁気浮上式遠心血液ポンプ設計の検討               
    信太宗也,増澤徹,築谷朋典,長真啓,西中知博,巽英介
    第59回日本人工臓器学会大会, 26 Nov. 2021
    20211125, 20211127
  • 超小型な磁気浮上モータを用いた小児用人工心臓の性能評価               
    長真啓; 山下俊大; 増澤徹; 西中知博; 築谷朋典; 水野敏秀; 片桐伸将; 巽英介; 柳園宜紀; 一ノ瀬高紀
    第59回日本人工臓器学会大会, 26 Nov. 2021
    20211125, 20211127
  • 埋め込み型補助人工心臓のための緊急エネルギ維持機構               
    LIFE2020-2021, 16 Sep. 2021
    20210916, 20210918
  • 模擬循環回路による補助循環下の冠循環流量評価               
    LIFE2020-202, 16 Sep. 2021
    20210916, 20210918
  • 完全置換型磁気浮上人工心臓のポンプ特性               
    對馬謙一; 増澤徹; 長真啓; 信太宗也; Timms Daniel
    LIFE2020-202, 16 Sep. 2021
    20210916, 20210918
  • 小児用人工心臓用アキシャル型セルフベアリングモータの動特性評価               
    長真啓,増澤徹,築谷朋典,西中知博,巽英介
    Dynamics and Design Conference 2021, 16 Sep. 2021
    20210916, 20210916
  • Dynamic Suspension Performance of an Ultra-Compact 5-DOF Controlled Axial Gap Type Self-Bearing Motor for Use in Pediatric Ventricular Assist Device               
    Masahiro Osa; Toru Masuzawa; Toshihiro Yamashita; Eisuke Tatsumi
    The 17th International Syimposium on Magnetic Bearings, 20 Aug. 2021
    20210820, 20210820
  • 小児用人工心臓用磁気浮上モータの小型化に関する研究               
    第33回「電磁力関連のダイナミクス」シンポジウム, 19 May 2021
    20210519, 20210521
  • 体内植込型補助人工心臓のためのホモポーラ型磁気浮上モータ               
    川口哲平,増澤徹,長真啓
    第33回「電磁力関連のダイナミクス」シンポジウム, 19 May 2021
    20210519, 20210521
  • 人工心臓のためのホモポーラ型磁気軸受の支持力向上の検討               
    上田優人; 増澤徹; 長真啓; Megan Kavin
    第31回「電磁力関連のダイナミクス」シンポジウム, 22 May 2019
  • 全置換型磁気浮上人工心臓の右心ポンプ性能の向上に関する研究               
    牧田丈靖; 増澤徹; 信太宗也; 長真啓; Daniel L Timms
    第28回ライフサポート学会フロンティア講演会, 15 Mar. 2019
  • 小児用補助人工心臓用磁気浮上モータの省エネルギー化に関する研究               
    山口清; 増澤徹; 長真啓; 織原涼雅; 巽英介
    第28回ライフサポート学会フロンティア講演会, 15 Mar. 2019
  • 埋込型人工心臓への使用を目的とした緊急時電力供給用小型フライホールの研究開発               
    柳沼修太; 増澤徹; 長真啓; 柴建次; 巽英介; 西村隆
    第28回ライフサポート学会フロンティア講演会, 15 Mar. 2019
  • 冠動脈バイパス手術における血管接合支援デバイスの研究開発               
    羽根田洋輔; 増澤徹; 長真啓; 尾関和秀; 岸田晶夫; 巽英介
    第28回ライフサポート学会フロンティア講演会, 15 Mar. 2019
  • 冠動脈バイパス手術のための血管吻合デバイスの開発               
    吉田尚記; 増澤徹; 長真啓; 尾関和秀; 岸田晶夫; 巽英介
    第28回ライフサポート学会フロンティア講演会, 15 Mar. 2019
  • 血液Ht変化に伴う粘度変化が磁気浮上インペラ非制御位置計測による血液遠心ポンプ流量推定精度に及ぼす影響               
    信太宗也; 増澤徹; 長真啓
    第47回人工心臓と補助循環懇話会学術集会, 01 Feb. 2019
  • 超小型磁気浮上モータを用いた次世代型遠心連続流式小児用人工心臓の血液循環性能評価,               
    長真啓; 増澤徹; 織原涼雅; 築谷朋典; 巽英介
    第47回人工心臓と補助循環懇話会学術集会, 01 Feb. 2019
  • 血液遠心ポンプ拍出流量推定手法確立のための磁気浮上インペラ流体評価               
    信太宗也; 増澤徹; 長真啓
    第31回バイオエンジニアリング講演会, 14 Dec. 2018
  • 磁気浮上インペラ偏心位置を用いた新しい血液遠心ポンプ流量推定手法確立のための流路内圧不平衡場解析               
    信太宗也; 増澤徹; 長真啓
    日本生体医工学会関東支部若手研究者発表会2018, 01 Dec. 2018
  • 小児心不全治療のための超小型な磁気浮上型補助人工心臓の研究開発               
    長真啓; 増澤徹; 織原涼雅; 巽英介
    第56回日本人工臓器学会大会, 01 Nov. 2018
  • 高せん断流れ場におけるせん断応力と接液面の表面粗さが溶血に及ぼす影響               
    安武勇貴; 長真啓; 丸山修; 西田正浩; 増澤徹
    第56回日本人工臓器学会大会, 01 Nov. 2018
  • Dynamic movement of the magnetically levitated impeller during pulsatile operation               
    Toru Masuzawa; Shuya Shida; Masahiro Osa; Takashi Nishimura; Eisuke Tatsumi
    26th ISMCS2018, 31 Oct. 2018
  • Next generation Ultra-Compact centrifugal pediatric VAD using maglev motor with Improved design to enhance energy efficiency               
    Masahiro Osa; Toru Masuzawa; Ryoga Orihara; Eisuke Tatsumi
    26th ISMCS2018, 31 Oct. 2018
  • Novel flow rate estimation method of a centrifugal blood pump using passive stabilization dynamics of magnetically levitated impeller               
    Shuya Shida; Toru Masuzawa; Masahiro Osa
    26th ISMCS2018, 31 Oct. 2018
  • Next generation Ultra-Compact centrifugal pediatric VAD using maglev motor with,Improved design to enhance energy efficiency               
    Masahiro Osa; Toru Masuzawa; Ryoga Orihara; Eisuke Tatsumi
    26th ISMCS2018, 31 Oct. 2018
  • 小児用人工心臓のための超小型磁気浮上モータの改良               
    織原涼雅; 増澤徹; 長真啓; 巽英介
    第27回MAGDAコンファレンス in Katusshika, 20 Oct. 2018
  • 血液遠心ポンプ拍出流量推定のための磁気浮上インペラふれ回り運動解析               
    信太宗也; 増澤徹; 長真啓; 大野康平; 西村隆; 許俊鋭; 巽英介
    LIFE2018, 06 Sep. 2018
  • 複合低エネルギ冠動脈バイパス接合デバイスの開発               
    羽根田洋輔; 増澤徹; 長真啓; 尾関和秀; 岸田晶夫; 片桐伸将; 巽英介
    LIFE2018, 06 Sep. 2018
  • 磁気浮上式血液ポンプ内インペラ径方向受動安定ダイナミクスの血液量計測への応用               
    信太宗也; 増澤徹; 長真啓
    第57回日本生体医工学会大会, 19 Jun. 2018
  • 全置換型磁気浮上人工心臓の浮上インペラの非制御軸の振動抑制               
    牧田丈靖; 増澤徹; 長真啓; Daniel L Timms
    第30回「電磁力関連のダイナミクス」シンポジウム, 23 May 2018
  • 心拍同期型体外設置磁気浮上血液ポンプの研究開発               
    佐藤遼太; 増澤徹; 長真啓; 西村隆; 許俊鋭; 巽英介
    第27回ライフサポート学会フロンティア講演会, 09 Mar. 2018
  • 全置換型磁気浮上人工心臓の径方向受動安定性の向上               
    牧田丈靖; 増澤徹; 長真啓; Daniel L Timms
    第27回ライフサポート学会フロンティア講演会, 09 Mar. 2018
  • 人工心臓のためのホモポーラ型磁気浮上モータの構造検討               
    上田優人; 増澤徹; 長真啓; 小泉綾香
    第27回ライフサポート学会フロンティア講演会, 09 Mar. 2018
  • 高せん断流れ場における表面粗さと溶血に関する研究               
    安武勇貴; 増澤徹; 長真啓; 丸山修
    第27回ライフサポート学会フロンティア講演会, 09 Mar. 2018
  • これからのMCSデバイス開発               
    増澤徹
    第46回人工心臓と補助循環懇話会学術集会, 09 Feb. 2018
  • 磁気浮上式血液ポンプ内インペラ受動安定位置計測による血流量推定               
    信太宗也; 増澤徹; 長真啓; 佐藤遼太
    第46回人工心臓と補助循環懇話会学術集会, 09 Feb. 2018
  • インペラ変位による流体力増大を考慮した磁気浮上遠心血液ポンプ内ボリュート形状の検討               
    信太宗也; 増澤徹; 長真啓
    第30回バイオエンジニアリング講演会, 14 Dec. 2017
  • 全置換型磁気浮上人工心臓への反発型永久磁石磁気軸受の組み込み               
    牧田丈靖; 増澤徹; 國府田芳彰; 長真啓; Daniel L Timms
    第26回MAGDAコンファレンス in 金沢, 26 Oct. 2017
  • 人工心臓への適用を目的とした4軸制御型磁気軸受の開発               
    小泉綾香; 増澤徹; 長真啓
    第26回MAGDAコンファレンス in 金沢, 26 Oct. 2017
  • 心拍同期型磁気浮上体外循環血液ポンプの径方向安定性評価               
    佐藤遼太; 増澤徹; 長真啓; 大野康平; 西村隆; 許俊鋭
    第26回MAGDAコンファレンス in 金沢, 26 Oct. 2017
  • Effects of eccentrically whirling motion of a Magnetically levitated impeller on blood damage potential in a centrifugal blood pump               
    Shuya Shida; Toru Masuzawa; Masahiro Osa
    2017 The International society for mechanical circulatory support (ISMCS), 16 Oct. 2017
  • Performance evaluation of a magnetically levitated centrifugal pediatric VAD and motor design optimization for improvement of a maglev motor               
    Masahiro Osa; Toru Masuzawa; Ryoga Orihara; Eisuke Tatsumi
    2017 The International society for mechanical circulatory support (ISMCS), 16 Oct. 2017
  • 体外循環磁気浮上血液ポンプにおける浮上回転インペラ不釣り合いの径方向変位への影響               
    大野康平; 増澤徹; 長真啓; 佐藤遼太; 西村隆; 許俊鋭
    LIFE2017, 15 Sep. 2017
  • 補助人工心臓のための4軸制御型磁気軸受の開発-3次元静磁場解析による軸受形状検討-               
    小泉綾香; 増澤徹; 長真啓
    LIFE2017, 15 Sep. 2017
  • 複合低エネルギを用いた冠動脈バイパス手術支援デバイスの開発-吻合時温度変化の検討-               
    羽根田洋輔; 増澤徹; 長真啓; 尾関和秀; 岸田晶夫
    LIFE2017, 15 Sep. 2017
  • Compact maglev motor with full DOF active control for miniaturized rotary blood pumps               
    Masahiro Osa; Toru Masuzawa; Ryoga Orihara; Eisuke Tatsumi
    The 11th International Symposium on Linear Drives for Induatry Applications(LDIA2017), 06 Sep. 2017
  • 反発型永久磁石磁気軸受による磁気浮上全人工心臓の安定化               
    牧田丈靖; 増澤徹; 長真啓; 國府田芳彰; Daniel Timms
    第55回日本人工臓器学会大会, 01 Sep. 2017
  • 磁気浮上型体外循環血液ポンプの血液適合性向上のための浮上インペラ振れ回り運動解析               
    佐藤遼太; 増澤徹; 長真啓; 信太宗也; 大野康平; 西村隆; 許俊鋭
    第55回日本人工臓器学会大会, 01 Sep. 2017
  • 小型5軸制御磁気浮上モータを用いた小児用人工心臓のポンプ性能評価               
    織原涼雅; 増澤徹; 長真啓; 巽英介
    第55回日本人工臓器学会大会, 01 Sep. 2017
  • 乳児・小児用磁気浮上補助人工心臓の開発               
    増澤徹; 長真啓; 巽英介
    第55回日本人工臓器学会大会, 01 Sep. 2017
  • 磁気浮上型全人工心臓の流量バランス制御に関する研究               
    牧田丈靖; 増澤徹; 長真啓; Daniel L Timms
    第25回茨城講演会, 29 Aug. 2017
  • 磁気支持安定性向上を目指した三次元磁場解析による小児用人工心臓用5軸制御磁気浮上モータの構造検討               
    織原涼雅; 増澤徹; 長真啓; 巽英介
    第25回茨城講演会, 29 Aug. 2017
  • 磁気浮上型血液ポンプ内浮上インペラの羽根枚数が径方向変位に与える影響               
    大野康平; 増澤徹; 長真啓; 佐藤遼太; 西村隆; 許俊鋭
    第25回茨城講演会, 29 Aug. 2017
  • 複合低エネルギを用いた冠動脈バイパス手術支援デバイスの開発-血管装着部の変更・加圧機構の改良-               
    羽根田洋輔; 増澤徹; 長真啓; 尾関和秀; 岸田晶夫
    第25回茨城講演会, 29 Aug. 2017
  • 5軸制御磁気浮上モータを用いた遠心式小児用人工心臓の開発               
    長真啓; 増澤徹; 斎藤拓也; 巽英介
    第29回「電磁力関連のダイナミクス」シンポジウム, 18 May 2017
  • 薄小型補助人工心臓用セルフベアリングモータの改良               
    村上倫子; 増澤徹; 小沼弘幸; 西村隆; 許俊鋭
    第29回「電磁力関連のダイナミクス」シンポジウム, 18 May 2017
  • 磁気浮上遠心血液ポンプ設計のためのインペラ変位を考慮した数値流体解析               
    信太宗也; 増澤徹; 長真啓
    第56回日本生体医工学会大会, 03 May 2017
  • 全置換型人工心臓の高度化に関する研究               
    國府田芳彰; 増澤徹; 長真啓; 牧田丈靖; Daniel L Timms
    第26回ライフサポート学会フロンティア講演会, 10 Mar. 2017
  • 心臓治療を目的とした心拍同期型体外循環磁気浮上血液ポンプの研究開発               
    大野康平; 増澤徹; 長真啓; 佐藤遼太; 西村隆; 許俊鋭
    第26回ライフサポート学会フロンティア講演会, 10 Mar. 2017
  • 複合低エネルギーを用いた冠動脈バイパス手術支援デバイスの研究開発               
    羽根田洋輔; 増澤徹; 尾関和秀; 岸田晶夫; 樋上哲哉
    第26回ライフサポート学会フロンティア講演会, 10 Mar. 2017
  • 作動流体粘度が磁気浮上補助人工心臓のポンプ・浮上性能に与える影響               
    村上倫子; 増澤徹; 小沼弘幸; 西村隆; 許俊鋭
    第26回ライフサポート学会フロンティア講演会, 10 Mar. 2017
  • 全置換型磁気浮上人工心臓の流量バランス制御に関する研究               
    牧田丈靖; 増澤徹; 長真啓; 國府田芳彰; Daniel L Timms
    第26回ライフサポート学会フロンティア講演会, 10 Mar. 2017
  • 小児用人工心臓のための小型5軸制御磁気浮上モータの改良               
    織原涼雅; 長真啓; 増澤徹; 斎藤拓也; 巽英介
    第26回ライフサポート学会フロンティア講演会, 10 Mar. 2017
  • 磁気浮上型小児用補助人工心臓の研究開発               
    長真啓; 増澤徹; 斎藤卓也; 巽英介
    第45回人工心臓と補助循環懇話会学術集会, 17 Feb. 2017
  • 磁気浮上血液ポンプのマグネットカプリング機構の設計               
    小泉綾香; 増澤徹; 國府田芳彰; 長真啓
    第29回バイオエンジニアリング講演会, 19 Jan. 2017
  • 磁気浮上型全人工心臓の課題               
    増澤徹; Daniel Timms
    第54回日本人工臓器学会大会, 25 Nov. 2016, [Invited]
  • 薄小型補助人工心臓のための径方向2軸制御型磁気浮上カスケードポンプの開発               
    辺 保昭; 増澤 徹; 村上 倫子; 小沼 弘幸; 西村 隆; 許 俊鋭
    第25回MAGDAコンファレンス, 24 Nov. 2016
  • 全置換型磁気浮上人工心臓のための反発型磁気軸受の検討               
    國府田 芳彰; 増澤 徹; 長 真啓; Daniel L TIMMS
    第25回MAGDAコンファレンス, 24 Nov. 2016
  • 超小型磁気浮上式小児用人工心臓の開発               
    斎藤拓也; 増澤徹; 長真啓; 巽英介
    第25回MAGDAコンファレンス, 24 Nov. 2016
  • Miniaturization of pediatric ventricular assist device with a double stator maglev motor               
    Takuya Saito; Toru Masuzawa; Masahiro Osa; Eisuke Tatsumi
    24th Congress of the International Society for Rotary Blood Pumps, 20 Sep. 2016
  • Performance enhancement of magliv ventricular assist device for mild heart disease patients               
    Yasuaki Watanabe; Toru Masuzawa; Michiko Murakami; Hiroyuki Onuma; Takashi Nishimura; Shunei Kyo
    24th Congress of the International Society for Rotary Blood Pumps, 20 Sep. 2016
  • Improvement in a next generation maglev centrifugal pediatric VAD               
    Masahiro Osa; Toru Masuzawa; Takuya Saito; Eisuke Tatsumi
    24th Congress of the International Society for Rotary Blood Pumps, 20 Sep. 2016
  • Magnetically levitated blood pump for extracorporeal circulation driven to synchronize with heart beat               
    Ryota Sato; Toru Masuzawa; Masahiro Osa; Takashi Nishimura; Shunei Kyo; Noritsugu Naito; Eisuke Tatsumi
    24th Congress of the International Society for Rotary Blood Pumps, 20 Sep. 2016
  • Maglev motor optimization for single rotating actuator total artificial heart               
    Yoshiaki Koda; Toru Masuzawa; Masahiro Osa; Daniel Lee Timms
    24th Congress of the International Society for Rotary Blood Pumps, 20 Sep. 2016
  • The investigation of hydrodynamic effect of the 3D micro-geometrical structures on physical adhesion phenomena of thrombus foemation               
    Akiko Oota; Toru Masuzawa; Kazuaki Nagayama
    24th Congress of the International Society for Rotary Blood Pumps, 20 Sep. 2016
  • 全置換型人工心臓用磁気浮上モータの改良               
    國府田芳彰; 増澤徹; 長真啓; Timms Daniel
    LIFE2016, 04 Sep. 2016
  • Effect of pulsatile operation on a maglev centrifugal blood pump               
    Toru Masuzawa
    2016 Annual Conference of the Asia-Pacific Society for Artificial Organs, 27 Aug. 2016
  • 心臓治療を目的とした磁気浮上型体外循環血液ポンプの研究開発               
    佐藤遼太; 増澤徹; 長真啓; 西村隆; 許俊鋭
    第24回茨城講演会, 26 Aug. 2016
  • 複合低エネルギ生体組織接合技術における生体組織構造変化の可視化               
    小泉綾香; 増澤徹; 長真啓; 尾関和秀; 岸田晶夫
    第24回茨城講演会, 26 Aug. 2016
  • Magnetic levitation performance of miniaturized magnetically levitated motor with 5-DOF active control               
    Masahiro Osa; Toru Masuzawa; Takuya Saito; Eisuke Tatsumi
    15th International symposium on magnetic bearings, 03 Aug. 2016
  • Magnetic Levitation Performance of Miniaturized Magnetically Levitated Motor with 5-DOF Active Control               
    Masahiro OSA; Toru MASUZAWA; Takuya SAITO and Eisuke TATSUMI
    15th International Symposium on Magnetic Bearings, 03 Aug. 2016
  • Development of radial type self-bearing motor for small centrifugal blood pump               
    Hiroyuki ONUMA; Toru MASUZAWA and Michiko MURAKAMI
    15th International Symposium on Magnetic Bearings, 03 Aug. 2016
  • The effect of 3-dimential micro-geometrical structures of bio-material surface on flow and adhesion phase in thrombus cascade               
    Toru Masuzawa
    ASAIO 62nd Annual Conference, 15 Jun. 2016
  • 小児用人工心臓用5軸制御磁気浮上モータのセンサレスモータ制御               
    長真啓; 増澤徹; 斎藤拓也; 巽英介
    第28回「電磁力関連のダイナミクス」シンポジウム, 18 May 2016
  • 薄小型磁気浮上補助人工心臓の実用化に向けた改良               
    渡辺保昭; 増澤徹; 村上倫子; 小沼弘幸; 西村隆; 許俊鋭
    第55回日本生体医工学会大会, 26 Apr. 2016
  • レオメータを使用したせん断流れ場における血液接触面の表面粗さと溶血量の関係               
    中嶋翔太; 丸山修; 西田正浩; 足立吉數; 長真啓; 増澤徹
    第55回日本生体医工学会大会, 26 Apr. 2016
  • 人工心臓技術の現況と今後の展望               
    増澤徹; 長真啓; 柴建次; 巽英介; 西村隆; 許俊鋭; Daniel Timms
    日本医工学治療学会第32回学術大会, 20 Mar. 2016, [Invited]
  • 複合低エネルギ生体組織接合技術の研究開発-FIB-SEMによる生体組織接合部の観察-               
    小泉綾香; 増澤徹; 長真啓; 尾関和秀; 岸田晶夫
    ライフサポート学会第25回フロンティア講演会, 08 Mar. 2016
  • 心拍同期型磁気浮上血液ポンプにおける受動安定性向上のための検討               
    下堀拓己; 増澤徹; 長真啓; 西村隆; 許俊鋭
    ライフサポート学会第25回フロンティア講演会, 08 Mar. 2016
  • 磁気浮上型体外循環血液ポンプの拍動運動における流体力推定               
    佐藤遼太; 増澤徹; 長真啓; 下堀拓己; 西村隆; 許俊鋭
    ライフサポート学会第25回フロンティア講演会, 08 Mar. 2016
  • 連続流式小児用磁気浮上心臓の研究開発               
    長真啓; 増澤徹; 斎藤拓也; 巽英介
    第44回人工心臓と補助循環懇話会学術集会, 04 Mar. 2016
  • 磁気浮上人工心臓の制御               
    増澤徹; 西村隆; 許俊鋭; 巽英介; Daniel Timms
    第44回人工心臓と補助循環懇話会学術集会, 04 Mar. 2016
  • 急性心不全適用を目指した体外循環磁気浮上ポンプの開発               
    増澤徹; 下堀拓己; 内藤啓嗣; 巽英介; 西村隆; 許俊鋭
    日本定常流ポンプ研究会2015, 19 Nov. 2015
  • 次世代型磁気浮上式小児用補助人工心臓の開発現状               
    長真啓; 増澤徹; 巽英介
    第53回日本人工臓器学会大会, 19 Nov. 2015
  • 薄小型磁気浮上補助人工心臓における非制御軸方向の振動と流体力               
    村上倫子; 増澤徹; 小沼弘幸; 西村隆; 許俊鋭
    第53回日本人工臓器学会大会, 19 Nov. 2015
  • 循環系シミュレータの冠循環模擬評価               
    黒崎亘; 増澤徹
    第53回日本人工臓器学会大会, 19 Nov. 2015
  • 連続流型磁気浮上全人工心臓の開発               
    箕輪純承; 増澤徹; 長真啓; 國府田芳彰
    第53回日本人工臓器学会大会, 19 Nov. 2015
  • 人工材料上の表面粗さ周囲に発生する流れと血栓形成に関する基礎研究~幾何学構造周囲流れの予測と成分付着の関係~               
    太田晶子; 増澤徹; 柴田隆行
    第53回日本人工臓器学会大会, 19 Nov. 2015
  • センサレスモータ制御を用いた磁気浮上血液ポンプの回転数変調               
    長真啓; 増澤徹; 下堀拓己; 西村隆; 許俊鋭
    第58回自動制御連合講演会, 14 Nov. 2015
  • ラジアル型セルフベアリングモータにおける受動安定性の簡易推定式の検討               
    小沼弘幸; 増澤徹; 村上倫子
    第24回MAGDAコンファレンス, 12 Nov. 2015
  • 磁気浮上型人工心臓のための永久磁石磁気カップリングの基礎検討               
    國府田芳彰; 増澤徹; 長真啓; Kieran Hunter
    第24回MAGDAコンファレンス, 12 Nov. 2015
  • 心拍同期型磁気浮上血液ポンプにおける受動安定軸の浮上安定性評価               
    下堀拓己; 増澤徹; 西村隆; 許俊鋭
    第24回MAGDAコンファレンス, 12 Nov. 2015
  • Magnetically suspended total artificial heart with a single actuator               
    Toru Masuzawa
    APSAO2015, 24 Oct. 2015
  • A double side stator type axial self-bearing motor development for the left ventricular assist device               
    Nobuyuki Kurita; Takeo Ishikawa; Naoki Saito; Toru Masuzawa
    The 17th International Symposium on Applied Electromagnetics and Mechanics, 15 Sep. 2015
  • Ministurizing 5-DOF fully controlled axial gap maglev motor for pediatric ventricular assist devices               
    Masahiro Osa; Toru Masuzawa; Naoki Omori; Eisuke Tatsumi
    The 17th International Symposium on Applied Electromagnetics and Mechanics, 15 Sep. 2015
  • 小児用人工心臓用5軸制御磁気浮上モータの小型化               
    斎藤拓也; 増澤徹; 長真啓; 巽英介
    第23回茨城講演会, 28 Aug. 2015
  • ホモポーラ型ハイブリッド5軸制御セルフベアリングモータに関する研究               
    鈴木力; 松田健一; 岡田養二; 近藤良; 増澤徹
    第23回茨城講演会, 28 Aug. 2015
  • IPM型5軸制御セルフベアリングモータに関する研究               
    徳井春彦; 松田健一; 近藤良; 増澤徹
    第23回茨城講演会, 28 Aug. 2015
  • コンシクエントポール型5軸制御セルフベアリングモータの基本特性解析               
    原田誠; 松田健一; 近藤良; 増澤徹
    第23回茨城講演会, 28 Aug. 2015
  • 二重円筒型レオメータによる人工材料溶血定量評価               
    中嶋翔太; 丸山修; 西田正浩; 足立吉數; 長真啓; 増澤徹
    第23回茨城講演会, 28 Aug. 2015
  • 全置換型磁気浮上人工心臓の研究開発-エネルギ伝送技術を用いた径方向変位抑制機構-               
    國府田芳彰; 増澤徹; 箕輪純承; 長真啓; 柴建次; Daniel L Timms
    第23回茨城講演会, 28 Aug. 2015
  • 数値流体解析による薄小型磁気浮上補助人工心臓用カスケードポンプの改良               
    渡辺保昭; 増澤徹; 村上倫子; 小沼弘幸; 西村隆; 許俊鋭
    第23回茨城講演会, 28 Aug. 2015
  • スパッタリング法による水熱結晶化マグネシウム含有HA薄膜の溶解性及び密着性評価               
    第23回茨城講演会, 28 Aug. 2015
  • 磁性粒子を用いた磁気励振細胞刺激機構の開発               
    西村佳織; 増澤徹; 長真啓; 林照剛; 岸田晶夫
    第27回「電磁力関連のダイナミクス」シンポジウム, 14 May 2015
  • 小児用人工心臓のための5軸制御磁気浮上モータの回転速度センサレス制御               
    長真啓; 増澤徹; 大森直樹; 巽英介
    第27回「電磁力関連のダイナミクス」シンポジウム, 14 May 2015
  • Mechanical circulatory supportのための磁気浮上血液ポンプ               
    増澤徹
    第54回生体医工学会大会, 07 May 2015
  • 人工材料表面上での微小流れと抗血栓性に関する研究               
    山口直紀
    関東学生会第54回学生員卒業研究発表講演会, 20 Mar. 2015
  • 複合低エネルギ生体組織接合技術の開発研究-コラーゲン変性可視化による至適接合条件の検討-               
    諏訪陽祐; 増澤徹; 長真啓; 尾関和秀; 岸田晶夫; 樋上哲哉
    第24回ライフサポート学会フロンティア講演会, 05 Mar. 2015
  • 小児用磁気浮上人工心臓の小型化設計               
    斎藤拓也; 増澤徹; 長真啓; 大森直樹; 巽英介
    第24回ライフサポート学会フロンティア講演会, 05 Mar. 2015
  • 全置換型人工心臓のための磁気浮上モータの改良               
    國府田芳彰; 増澤徹; 長真啓; 箕輪純承; Daniel L Timms
    第24回ライフサポート学会フロンティア講演会, 05 Mar. 2015
  • 薄小型磁気浮上補助人工心臓用カスケードポンプの改良               
    渡辺保昭; 増澤徹; 村上倫子; 吉田翔一; 小沼弘幸; 西村隆; 許俊鋭
    第24回ライフサポート学会フロンティア講演会, 05 Mar. 2015
  • 人工心臓材料表面性状と血液適合性に関する研究-人工材料表面粗さが溶血に及ぼす影響の検討-               
    中嶋翔太; 丸山修; 西田正浩; 足立吉數; 増澤徹
    第24回ライフサポート学会フロンティア講演会, 05 Mar. 2015
  • 乳幼児、小児用補助人工心臓のための磁気浮上モータの小型化               
    長真啓; 増澤徹; 大森直樹; 巽英介
    第43回人工心臓と補助循環懇話会学術集会, 20 Feb. 2015
  • 磁気浮上型心臓治療用血液ポンプへのセンサレスモータ制御の適用               
    大森直樹; 増澤徹; 長真啓; 下堀拓己; 西村隆; 許俊鋭
    第23回MAGDAコンファレンスin 高松, 04 Dec. 2014
  • 薄小型磁気浮上補助心臓における浮上インペラの受動安定軸の変動計測               
    吉田翔一; 増澤徹; 村上倫子; 小沼弘幸; 西村隆; 許俊鋭
    第23回MAGDAコンファレンスin 高松, 04 Dec. 2014
  • ホモポーラ型ハイブリット5軸制御セルフベアリングモータの開発               
    加藤正寛; 松田健一; 岡田養二; 近藤良; 増澤徹
    第23回MAGDAコンファレンスin 高松, 04 Dec. 2014
  • The relationship between the thrombogenicity and the generated flow around 3-dimensional micro geometrical structures on the bio-material –Investigation of micro flow-               
    Ota-Ishigaki A; Masuzawa T; Shibata T; Kawashima T; Maruyama O
    The 10th International Student Conference at Ibaraki University, 15 Nov. 2014
  • Cardiovascular circulation simulator to evaluate ventricular assist effect               
    Kurosaki W; Masuzawa T
    The 10th International Student Conference at Ibaraki University, 15 Nov. 2014
  • 全置換型磁気浮上人工心臓への反発型永久磁石磁気軸受の組み込み               
    牧田丈靖; 増澤徹; 國府田芳彰; 長真啓; Daniel L Timms
    第26回MAGDAコンファレンス in 金沢, 26 Oct. 2014
  • 重症化予防のための薄小型磁気浮上補助人工心臓               
    増澤徹; 村上倫子; 吉田翔一; 長真啓; 小沼弘幸; 許俊鋭; 西村隆; 柴建次
    第52回日本人工臓器学会大会, 17 Oct. 2014
  • 冠循環模擬を付加した循環系シミュレータの性能評価               
    黒崎亘; 増澤徹; 箕輪純承
    第52回日本人工臓器学会大会, 17 Oct. 2014
  • 5軸制御磁気浮上モータを用いた乳幼児、小児用補助人工心臓の開発               
    長真啓; 増澤徹; 大森直樹; 巽英介
    第52回日本人工臓器学会大会, 17 Oct. 2014
  • 全置換型磁気浮上人工心臓:BiVACORとIBHeart               
    増澤徹; Daniel Timms; Shaun Gregory
    日本定常流ポンプ研究会2014, 17 Oct. 2014
  • 複合低エネルギ生体組織接合のおける生体組織含水率と接合強度の関係               
    諏訪陽祐; 増澤徹; 長真啓; 尾関和秀; 岸田晶夫; 樋上哲哉
    生活生命支援医療福祉工学系学会連合大会, 24 Sep. 2014
  • 薄小型補助人工心臓磁気浮上インペラの非制御軸挙動               
    吉田翔一; 増澤徹; 村上倫子; 長真啓; 小沼弘幸; 西村隆; 許俊鋭
    生活生命支援医療福祉工学系学会連合大会, 24 Sep. 2014
  • Pediatric VAD with five degrees of freedom control maglev motor               
    Toru Masuzawa
    the 41st Annual ESAO Congress, 17 Sep. 2014
  • スパッタリング法によるマグネシウム置換HA薄膜の作製とマグネシウム置換量の評価               
    但野ちなみ; 尾関和秀; 増澤徹; 青木秀希
    第22回茨城講演会, 05 Sep. 2014
  • ケイ酸塩またはHA粉末を用いた放射性物質吸着とケイ酸塩/HA複合体作成方法の検討               
    大和田詠里; 尾関和秀; 増澤徹; 青木秀希
    第22回茨城講演会, 05 Sep. 2014
  • 複合低エネルギ生体組織接合技術を利用した冠動脈バイパス手術支援デバイスの研究開発               
    荒昌幸; 増澤徹; 長真啓; 尾関和秀; 岸田晶夫; 樋上哲哉
    第22回茨城講演会, 05 Sep. 2014
  • 生体組織融着技術におけるステントの加熱手法の基礎的検討               
    豊田裕史; 田代翔子; 橋本一生; 柴建次; 岸田晶夫; 木村剛; 尾関和秀; 増澤徹
    第22回茨城講演会, 05 Sep. 2014
  • 急性心不全のための心拍同期型磁気浮上ポンプの研究開発               
    下堀拓己; 増澤徹; 長真啓; 西村隆; 許俊鋭
    第22回茨城講演会, 05 Sep. 2014
  • 冠循環模擬機構を有する循環系シミュレータの開発               
    箕輪純承; 増澤徹; 黒崎亘; 長真啓
    第22回茨城講演会, 05 Sep. 2014
  • Magnetically Suspended Motor System for Artificial Hearts and Blood Pumps               
    Toru Masuzawa
    14th International Symposium on Magnetic Bearings, 11 Aug. 2014
  • Radial position Active Control of Double Stator Axial Gap Self-Bearing Motor for Peadiatric VAD               
    Masahiro Osa; Toru Masuzawa; Naoki Omori; Eisuke Tatsumi
    14th International Symposium on Magnetic Bearings, 11 Aug. 2014
  • Thin Maglev Ventricular Assist Device with Radial Type Self-Bearing Motor               
    Michiko Murakami; Toru Masuzawa; Shoichi Yoshida; Hiroyuki Onuma; Takashi Nishimura; Syunei Kyo
    14th International Symposium on Magnetic Bearings, 11 Aug. 2014
  • Evaluation of magnetic Suspension Characteristics and Levitation Performance of a centrifugal Blood pump Using Radial Type Self-Bearing Motor               
    Hiroyuki Onuma; Toru Masuzawa
    14th International Symposium on Magnetic Bearings, 11 Aug. 2014
  • Optimization design of magnetically suspended system for the BIVACOR total artificial heart               
    Kurita N; Timm D; Greatrex N; Kleinheyer M; Masuzawa T
    14th International Symposium on Magnetic Bearings, 11 Aug. 2014
  • Magnetically Suspended Artificial Heart               
    Toru Masuzawa
    8th Asia-Pacific Symposium on Applied Electromagnetics and Mechanics, 22 Jul. 2014, [Invited]
  • シングル磁気浮上モータを使用した全置換型人工心臓               
    増澤徹; ティムス ダニエル
    第53回日本生体医工学会大会, 24 Jun. 2014
  • 循環補助デバイスのための渦流(カスケード)ポンプ               
    増澤徹; 村上倫子
    第53回日本生体医工学会大会, 24 Jun. 2014
  • 小児用補助人工心臓のための小型磁気浮上モータの開発               
    大森直樹; 増澤徹; 長真啓; 巽英介
    第26回「電磁力関連のダイナミクス」シンポジウム, 21 May 2014
  • 磁気ビーズを用いた磁気励振細胞刺激システム               
    増澤徹; 服部圭介; 林照剛; 木村剛; 岸田晶夫
    第26回「電磁力関連のダイナミクス」シンポジウム, 21 May 2014
  • 全置換型磁気浮上人工心臓と流量バランス制御               
    山田悠; 増澤徹; Daniel L Timms
    第26回「電磁力関連のダイナミクス」シンポジウム, 21 May 2014
  • 回転数周期的変動時の磁気浮上型血液ポンプの浮上安定性と溶血性能の検討               
    増澤徹; 山口聡史; 下堀拓己; 西村隆; 許俊鋭
    第26回「電磁力関連のダイナミクス」シンポジウム, 21 May 2014
  • 新しい循環治療方法の評価を目指した循環系シミュレータの研究開発               
    箕輪純承; 増澤徹; 黒崎亘
    関東学生会第53回学生員卒業研究発表講演会, 14 Mar. 2014
  • 乳幼児, 小児に適用可能な磁気浮上補助人工心臓の開発               
    長真啓; 増澤徹; 大森直樹; 巽英介
    第42回人工心臓と補助循環懇話会学術集会, 07 Mar. 2014
  • 左右心流量バランス機能を有した全置換型磁気浮上人工心臓               
    山田悠; 増澤徹; ティムズダニエル
    第42回人工心臓と補助循環懇話会学術集会, 07 Mar. 2014
  • 薄型補助人工心臓の開発               
    村上倫子; 増澤徹; 小沼弘幸; 西村隆; 許俊鋭
    第42回人工心臓と補助循環懇話会学術集会, 07 Mar. 2014
  • 全置換型磁気浮上人工心臓と流量バランス制御の研究               
    山田悠; 増澤徹
    第23回ライフサポート学会フロンティア講演会, 28 Feb. 2014
  • 磁気浮上型心臓治療用血液ポンプのインペラの浮上安定性の検討               
    下堀拓己; 増澤徹; 山口聡史; 西村隆; 許俊鋭
    第23回ライフサポート学会フロンティア講演会, 28 Feb. 2014
  • 複合低エネルギ生体組織接合技術を利用した冠動脈バイパス手術支援デバイスの開発               
    荒昌幸; 増澤徹; 尾関和秀; 岸田晶夫; 樋上哲哉
    第23回ライフサポート学会フロンティア講演会, 28 Feb. 2014
  • 小児、乳児用人工心臓のための5軸制御磁気浮上モータ               
    長真啓; 増澤徹; 大森直樹; 巽英介
    第23回ライフサポート学会フロンティア講演会, 28 Feb. 2014
  • 薄型磁気浮上補助人工心臓における受動安定特性の検討               
    村上倫子; 増澤徹; 小沼弘幸; 西村隆; 許俊鋭
    第22回MAGDAコンファレンスin宮崎, 02 Dec. 2013
  • 12突極ラジアル型セルフベアリングモータの磁気支持特性の推定               
    小沼弘幸; 増澤徹
    第22回MAGDAコンファレンスin宮崎, 02 Dec. 2013
  • 磁気浮上型血液ポンプのセンサレスモータ制御               
    床井宏行; 増澤徹; 山口聡史; 西村隆; 許俊鋭
    第22回MAGDAコンファレンスin宮崎, 02 Dec. 2013
  • 小児用人工心臓のための小型5軸制御セルフベアリングモータ               
    長真啓; 増澤徹; 大森直樹; 巽英介
    第22回MAGDAコンファレンスin宮崎, 02 Dec. 2013
  • アウターロータ型5軸制御セルフベアリングモータに関する研究               
    松田健一; 平根龍也; 近藤良; 増澤徹
    第22回MAGDAコンファレンスin宮崎, 02 Dec. 2013
  • 生体組織融着技術を用いた血管吻合装置の開発-加圧バンドを用いた場合の融着強度評価-               
    橋本一生; 柴建次; 岸田晶夫; 尾関和秀; 増澤徹
    リニアドライブ研究会, 07 Oct. 2013, 電気学会
  • ゼロパワー制御を用いた磁気浮上全人工心臓の流量バランス制御               
    山田悠; 増澤徹; ティムズダニエル
    リニアドライブ研究会, 07 Oct. 2013
  • The thin maglev ventricular assist device for mild heart disease patients               
    Michiko Murakami; Toru Masuzawa; Hiroyuki Onuma; Takashi Nishimura; Syunei Kyo
    21th ISRBP2013 YOKOHAMA, 26 Sep. 2013
  • Development of the left ventricular assist device by use of the double side stator type axial magnetically levitated motor               
    Nobuyuki Kurita; Takeo Ishikawa; Hirohumi Takada; Toru Masuzawa
    21th ISRBP2013 YOKOHAMA, 26 Sep. 2013
  • Hemolysis characteristics of maglev blood pump operated in the pulsatile mode               
    Satoshi Yamaguchi; Toru Masuzawa; Takashi Nishimura; Shunei Kyo
    21th ISRBP2013YOKOHAMA, 26 Sep. 2013
  • Performance improvement of two-DOF control self-bearing motor for maglev centrifugal blood pump               
    Hiroyuki Onuma; Toru Masuzawa
    21th ISRBP2013 YOKOHAMA, 26 Sep. 2013
  • Characterizing the magnetic motor-bearing of a rotary TAH to improve pressuresensitivity               
    Masahiro Osa; Toru Masuzawa; Hiroyuki Tokoi; Nobuyuki Kurita; Nicholas Greatrex; Daniel Timms
    21th ISRBP2013 YOKOHAMA, 26 Sep. 2013
  • Magnetically suspended total artificial heart with a single maglev motor               
    Yu Yamada; Toru Masuzawa; Daniel Lee Timms
    21th ISRBP2013YOKOHAMA, 26 Sep. 2013
  • A small thin maglev ventoricular assist device for mild heart disease patients               
    Toru Masuzawa; Michiko Murakami; Yusuke Sakata; Shoichi Yoshida; Hiroyuki Onuma; Takashi Nisimura; Syunei Kyo
    5th Congress of the International Federation for Artificial Organs (IFAO2013), 26 Sep. 2013
  • Observation of collagens’ microscopic structure change to investigate the adhesion mechanism combined low level energies               
    Yosuke Suwa; Toru Masuzawa; Kwangwoo Nam; Tsuyoshi Kimura; Akio Kishida
    5th Congress of the International Federation for Artificial Organs (IFAO2013), 26 Sep. 2013
  • The mechanical cell stimulator using alternative magnetic field eith magnetic beads attached on the cell               
    Keisuke Hattori; Toru Masuzawa; Terutake Hayashi
    5th Congress of the International Federation for Artificial Organs (IFAO2013), 26 Sep. 2013
  • Motor performance of magnetically levitated paediatric VAD               
    Naoki Omori; Toru Masuzawza; Masahiro Osa; Eisuke Tatsumi
    5th Congress of the International Federation for Artificial Organs (IFAO2013), 26 Sep. 2013
  • Magnetically suspended total artificial heart with a single actuator               
    T.Masuzawa; N.Nishimura; D.L.Timms
    XL ESAO Annual Congress, 11 Sep. 2013
  • 薄型磁気浮上補助人工心臓のための動圧スラスト軸受               
    吉田翔一; 増澤徹; 村上倫子; 坂田祐介; 小沼弘幸; 西村隆; 許俊鋭
    第21回茨城講演会, 06 Sep. 2013
  • 小児用人工心臓への応用を目指した5軸制御型小型磁気浮上モータの開発               
    大森直樹; 増澤徹; 長真啓; 巽英介
    第21回茨城講演会, 06 Sep. 2013
  • コンシクエントポール型セルフベアリングモータの基本特性解析               
    加藤正寛; 松田健一; 岡田養二; 近藤良; 増澤徹
    第21回茨城講演会, 06 Sep. 2013
  • 生体組織融着技術を用いたステントの位置ずれ防止-小型コイルによるステントの誘導加熱と引張強度評価-               
    田代翔子; 橋本一生; 柴建次; 岸田晶夫; 尾関和秀; 増澤徹
    第21回茨城講演会, 06 Sep. 2013
  • 複合低エネルギ生体組織接合に関する研究-加圧熱によるコラーゲンフィブリルの幾何学的形状変化-               
    諏訪陽祐; 増澤徹; 南広祐; 木村剛; 岸田晶夫
    第21回茨城講演会, 06 Sep. 2013
  • アパタイトおよびケイ酸塩を用いた放射性物質除去に関する研究               
    大和田詠里; 尾関和秀; 増澤徹; 青木秀希
    生活生命支援医療福祉工学系学会連合大会, 02 Sep. 2013
  • 生体組織融着技術を用いた血管吻合装置の開発-ステントの加熱と融着強度の評価-               
    橋本一生; 田代翔子; 柴建次; 岸田晶夫; 尾関和秀; 増澤徹
    生活生命支援医療福祉工学系学会連合大会, 02 Sep. 2013
  • せん断流れ場における血液接触面の表面粗さが溶血量増加に及ぼす定量評価-せん断応力発生の関与について-               
    丸山修; 工藤大樹; 西田正浩; 山根隆志; 松田健一; 足立吉數; 増澤徹
    生活生命支援医療福祉工学系学会連合大会, 02 Sep. 2013
  • 複合低エネルギ生体組織接合に関する研究-加圧機によるコラーゲンフィブリルの幾何学的形状変化の検討-               
    諏訪陽祐; 増澤徹; 南広祐; 木村剛; 岸田晶夫
    生活生命支援医療福祉工学系学会連合大会, 02 Sep. 2013
  • 磁気ビーズを用いた細胞振動刺激装置及びナノ振動検出装置の研究開発               
    服部圭介; 増澤徹; 林照剛
    生活生命支援医療福祉工学系学会連合大会, 02 Sep. 2013
  • 小児用人工心臓のための小型磁気浮上モータにおけるロータ永久磁石形状の検討               
    大森直樹; 増澤徹; 長真啓; 巽英介
    生活生命支援医療福祉工学系学会連合大会, 02 Sep. 2013
  • 全人工心臓用モータ小型化の検討               
    床井宏行; 増澤徹; Daniel L Timms
    第25回「電磁力関連のダイナミクス」シンポジウム, 15 May 2013
  • 心機能回復のための磁気浮上型血液ポンプの動特性に関する検討               
    山口聡史; 増澤徹; 大森正芳; 前田裕之; 西村隆; 許俊鋭
    第25回「電磁力関連のダイナミクス」シンポジウム, 15 May 2013
  • 薄型磁気浮上摩擦血液ポンプにおける非制御軸の安定性への流体力の影響               
    村上倫子; 増澤徹; 坂田佑介; 小沼弘幸; 西村隆; 許俊鋭
    第25回「電磁力関連のダイナミクス」シンポジウム, 15 May 2013
  • ストロンチウム固溶ハイドロキシアパタイト薄膜の作製と骨芽細胞による評価               
    星野智大; 尾関和秀; 後藤哲哉; 増澤徹; 青木秀希
    第22回ライフサポート学会フロンティア講演会, 02 Mar. 2013
  • カテーテル搭載用小型コイルを用いた食道用ステントの誘導加熱-小型コイルの開発と評価-               
    田代翔子; 橋本一生; 柴建次; 岸田晶夫; 尾関和秀; 増澤徹
    第22回ライフサポート学会フロンティア講演会, 02 Mar. 2013
  • 複合低エネルギを用いた腹腔鏡手術用鉗子型接合デバイスの開発               
    中島彩; 青代敏行; 増澤徹; 尾関和秀; 岸田晶夫; 樋上哲哉
    第22回ライフサポート学会フロンティア講演会, 02 Mar. 2013
  • 複合低エネルギ接合を利用した人工心臓用脱血管の研究               
    佐々木悠祐; 青代敏行; 増澤徹; 尾関和秀; 岸田晶夫; 巽英介
    第22回ライフサポート学会フロンティア講演会, 02 Mar. 2013
  • 生体組織・金属接合のための電磁誘導加熱に関する研究               
    横須賀匠; 増澤徹; 橋本英子; 柴建次
    第22回ライフサポート学会フロンティア講演会, 02 Mar. 2013
  • 細胞振動印加装置及びナノ振動検出装置の研究開発               
    放生宏貴; 増澤徹; 服部圭介; 林照剛
    第22回ライフサポート学会フロンティア講演会, 02 Mar. 2013
  • 小型磁気浮上摩擦血液ポンプのための動圧軸受の研究開発,               
    吉田翔一; 増澤徹; 村上倫子; 坂田 祐介; 小沼弘幸; 西村隆; 許俊鋭
    第22回ライフサポート学会フロンティア講演会, 02 Mar. 2013
  • 小児用磁気浮上人工心臓の研究開発               
    大森直樹; 増澤徹; 長真啓; 巽英介
    第22回ライフサポート学会フロンティア講演会, 02 Mar. 2013
  • 人工材料表面の3次元マイクロドメイン幾何学構造と血液適合性に関する研究               
    古河翔多; 増澤徹; 太田晶子; 柴田隆行; 川島貴弘
    第22回ライフサポート学会フロンティア講演会, 02 Mar. 2013
  • 新しい治療デバイスと磁気浮上技術               
    増澤徹; 西村隆; 許俊鋭; 巽英介; TIMMS Daniel
    第41回人工心臓と補助循環懇話会学術集会, 01 Feb. 2013
  • BiVACOR-Implantable Rotary Total Artificial Heart               
    TIMMS Daniel; COHN William; PARNIS Steven; GREATREX Nicholas; KURITA Nobuyuki; MASUZAWA Toru
    第41回人工心臓と補助循環懇話会学術集会, 01 Feb. 2013
  • 乳児用人工心臓への応用を目指した5自由度制御型磁気浮上モータの開発               
    長真啓; 増澤徹; 巽英介
    第41回人工心臓と補助循環懇話会学術集会, 01 Feb. 2013
  • 薄型補助人工心臓に用いる2軸制御型磁気浮上ポンプの開発               
    村上倫子; 増澤徹; 小沼弘幸; 西村隆; 許俊鋭
    第41回人工心臓と補助循環懇話会学術集会, 01 Feb. 2013
  • 磁気浮上全人工心臓の流量バランス制御               
    太田晶子; 増澤徹; 西村宣彦; TIMMS Daniel
    第41回人工心臓と補助循環懇話会学術集会, 01 Feb. 2013
  • 小児用人工心臓のための小型磁気浮上モータの開発               
    長真啓; 増澤徹; 巽英介
    第25回バイオエンジニアリング講演会, 09 Jan. 2013
  • 小型補助人工心臓のためのハイブリッド軸受の開発               
    床井宏行; 増澤徹; ニコラス グレイトレックス; ウーリッヒ スタインセイファー
    第25回バイオエンジニアリング講演会, 09 Jan. 2013
  • 循環系シミュレータにおける血管コンプライアンスと血圧波形との関係の検討               
    須田佳裕; 増澤徹; 黒崎亘
    第25回バイオエンジニアリング講演会, 09 Jan. 2013
  • 弾性ヒンジ型ナノ振動印加装置の研究開発               
    服部圭介; 増澤徹; 木村孝之; 古山昭
    第25回バイオエンジニアリング講演会, 09 Jan. 2013
  • 磁気浮上型全人工心臓のCFD解析               
    太田晶子; 増澤徹; 西村宣彦; ティムスダニエル
    第50回日本人工臓器学会大会, 22 Nov. 2012
  • 複合低エネルギーを用いた組織接合法のin vivo評価               
    橋本英子; 増澤徹; 尾関和秀; 丸岡寛明; 青代敏行; 樋上哲哉; 舩本誠一; 岸田晶夫; 木村剛
    第50回日本人工臓器学会大会, 22 Nov. 2012
  • 乳児用人工心臓のための5自由度制御型磁気浮上モータ               
    長真啓; 増澤徹; 巽英介
    第50回日本人工臓器学会大会, 22 Nov. 2012
  • これからの定常流ポンプ研究開発 新しい循環器病治療方法への対応               
    増澤徹; 西村隆; 許俊鋭; 巽英介; Daniel L Timms
    日本定常流ポンプ研究会2012, 22 Nov. 2012, 日本定常流ポンプ研究会
  • シングル磁気浮上モータ方式全人工心臓の開発               
    西村宣彦; 増澤徹; Daniel L Timms
    第21回MAGDAコンファレンス, 21 Nov. 2012
  • IPM型5軸制御セルフベアリングモータのコギングトルク低減に関する研究               
    佐藤心平; 松田健一; 近藤良; 増澤徹
    第21回MAGDAコンファレンス, 21 Nov. 2012
  • 薄型補助人工心臓のための2軸制御磁気浮上ポンプの開発               
    村上倫子; 増澤徹; 小沼弘幸; 西村隆; 許俊鋭
    第21回MAGDAコンファレンス, 21 Nov. 2012
  • スパッタリング法を用いたSr固溶HA薄膜の作製と骨芽細胞による評価               
    星野智大; 尾関和秀; 後藤哲哉; 増澤徹; 青木秀希
    生活生命支援医療福祉工学系学会連合大会2012, 02 Nov. 2012
  • せん断流れ場における血液接触材料の表面粗さが溶血量増加に及ぼす定量評価               
    丸山修; 伊藤大輝; 西田正浩; 山根隆志; 松田健一; 足立吉數; 増澤徹
    生活生命支援医療福祉工学系学会連合大会2012, 02 Nov. 2012
  • 磁気浮上全人工心臓の研究開発               
    西村宣彦; 増澤徹; ダニエル・ティムス
    生活生命支援医療福祉工学系学会連合大会2012, 02 Nov. 2012
  • 磁気浮上全人工心臓のポンプ内部圧力分布解明のためのCFD解析               
    太田晶子; 増澤徹; 西村宣彦; ダニエル・ティムス
    生活生命支援医療福祉工学系学会連合大会2012, 02 Nov. 2012
  • 低エネルギ生体融着デバイスの開発-圧力測定機構の付加-               
    丸岡寛明; 増澤徹; 橋本英子; 青代敏行; 岸田晶夫; 舩本誠一; 樋上哲哉
    生活生命支援医療福祉工学系学会連合大会2012, 02 Nov. 2012
  • Novel Long Term Ventricular Assist Device for Mild Heart Disease Patients               
    27)Masuzawa T; Ukita K; Onuma H; Nishimura T; Kyo S
    XXXIX Annual ESAO Congress, 29 Sep. 2012, ESAO
  • CFD Analysis for Maglev Total Artificial Heart               
    Akiko Ota; Toru Masuzawa; Nobuhiko Nishimura; Yusuke Sakata; Daniel L Timms
    20th Congress of the International Society for Rotary Blood Pumps, 21 Sep. 2012, the International Society for Rotary Blood Pumps
  • Levitated Bearings Technology for RBPs: Challenge or Perspective?               
    25)Toru Masuzawa; Daniel L Timms
    20th Congress of the International Society for Rotary Blood Pumps, 20 Sep. 2012, the International Society for Rotary Blood Pumps, [Invited]
  • 新しい人工心臓装着支援技術に関する研究               
    床井宏行; 増澤徹; 橋本英子; 尾関和秀; 青代敏行; 岸田晶夫; 樋上哲哉; 巽英介
    第20回茨城講演会, 24 Aug. 2012
  • 単一磁気浮上モータを用いた全置換型人工心臓の研究開発               
    坂田佑介; 増澤徹; 西村宣彦; Daniel L Timms
    第20回茨城講演会, 24 Aug. 2012
  • 心機能回復のための磁気浮上型血液ポンプの研究開発               
    山口聡史; 増澤徹; 山田悠; 大森正芳; 前田裕之; 西村隆; 許俊鋭
    第20回茨城講演会, 24 Aug. 2012
  • 小型・高性能アウターロータ型5軸制御セルフベアリングモータの開発               
    平根龍也; 松田健一; 近藤良; 増澤徹
    第20回茨城講演会, 24 Aug. 2012
  • ホモポーラ型ハイブリッド5軸制御セルフベアリングモータの開発               
    玉置将也; 松田健一; 岡田養二; 近藤良; 増澤徹
    第20回茨城講演会, 24 Aug. 2012
  • スパッタリング法によるストロンチウム固溶HA薄膜の作製と物性評価               
    星野智大; 尾関和秀; 後藤哲哉; 増澤徹; 青木秀希
    第20回茨城講演会, 24 Aug. 2012
  • 磁性ビーズ細胞励振系およびナノ振動計測系の研究開発               
    服部圭介; 増澤徹; 長真啓; 林照剛
    第20回茨城講演会, 24 Aug. 2012
  • 二重円筒型レオメーターを使用したせん断流れ場における表面粗さが溶血に与える影響               
    丸山修; 伊藤大輝; 西田正浩; 山根隆志; 松田健一; 足立吉數; 増澤徹
    第20回茨城講演会, 24 Aug. 2012
  • 5-DOF control double stator otor for paediatric ventricular assist device               
    Masahiro Osa; Toru Masuzawa; Eisuke Tatsumi
    13th international Symposium on Magnetic Bearings(ISMB13), 06 Aug. 2012
  • 人工心臓用ラジアル型磁気浮上モータのステータ突極形状の検討               
    小沼弘幸; 増澤徹
    第24回「電磁力関連のダイナミクス」シンポジウム, 16 May 2012
  • 新しい人工心臓装着支援装置に関する研究               
    床井宏行; 増澤徹; 青代敏行; 橋本英子; 尾関和秀; 岸田晶夫; 樋上哲哉; 巽英介
    第24回「電磁力関連のダイナミクス」シンポジウム, 16 May 2012
  • ホモポーラ型ハイブリッド5軸制御セルフベアリングモータの提案               
    松田健一; 玉置将也; 岡田養二; 近藤良; 増澤徹
    第24回「電磁力関連のダイナミクス」シンポジウム, 16 May 2012
  • 災害と補助人工心臓在宅治療               
    増澤徹
    第51回日本生体医工学会大会, 10 May 2012
  • 複合低エネルギを用いた鉗子型組織接合装置の開発               
    丸岡寛明; 増澤徹; 青代敏行; 尾関和秀; 木村剛; 岸田晶夫; 船本誠一; 樋上哲哉
    第51回日本生体医工学会大会, 10 May 2012
  • 小型磁気浮上摩擦血液ポンプの開発               
    浮田啓悟; 増澤徹; 小沼弘幸; 西村隆; 許俊鋭
    第21回ライフサポート学会フロンティア講演会, 03 Mar. 2012, ライフサポート学会
  • オンチップ細胞機能制御のための圧電駆動型マイクロ細胞培養デバイスの開発-器械的ナノ振動刺激の付与による細胞接着の評価-               
    山田侑平; 梅垣彦希; 川島貴弘; 永井萌土; 柴田隆行; 増澤徹; 木村剛; 岸田晶夫
    第21回ライフサポート学会フロンティア講演会, 03 Mar. 2012, ライフサポート学会
  • 弾性損失発熱を利用した生体接着装置の開発               
    笠原康佑; 南広祐; 木村剛; 清水繁; 青代敏行; 増澤徹; 岸田晶夫
    第21回ライフサポート学会フロンティア講演会, 03 Mar. 2012, ライフサポート学会
  • 生体組織融着技術を用いた血管吻合装置の開発-加熱性能の評価-               
    橋本一生; 柴建次; 岸田晶夫; 尾関和秀; 増澤徹
    第21回ライフサポート学会フロンティア講演会, 03 Mar. 2012, ライフサポート学会
  • 磁気浮上モータを用いた全置換型人工心臓のポンプ性能               
    坂田佑介; 増澤徹; 西村宣彦; Daniel L Timms
    第21回ライフサポート学会フロンティア講演会, 03 Mar. 2012, ライフサポート学会
  • 心臓治療用血液ポンプのモータ効率化と溶血性能の検討               
    山口聡史; 増澤徹; 山田悠; 大森正芳; 前田裕之; 西村隆; 許俊鋭
    第21回ライフサポート学会フロンティア講演会, 03 Mar. 2012, ライフサポート学会
  • 磁気ビーズ細胞励振系およびナノ振動計測系の開発               
    服部圭介; 増澤徹; 長真啓; 林照剛
    第21回ライフサポート学会フロンティア講演会, 03 Mar. 2012, ライフサポート学会
  • 心臓治療用磁気浮上血液ポンプの溶血性能評価               
    山田悠; 増澤徹; 大森正芳; 前田裕之; 西村隆; 許俊鋭
    第40回人工心臓と補助循環懇話会, 17 Feb. 2012
  • 小型非接触摩擦血液ポンプの研究開発               
    浮田啓悟; 増澤徹; 小沼弘幸; 西村隆; 許俊鋭
    第40回人工心臓と補助循環懇話会, 17 Feb. 2012
  • 磁気浮上全人工心臓のポンプ性能               
    西村宣彦; 増澤徹; ダニエルティムズ
    第40回人工心臓と補助循環懇話会, 17 Feb. 2012
  • 用途別に分化する磁気浮上型血液ポンプ               
    増澤徹; 巽英介; 西村隆; 許俊鋭
    第49回日本人工臓器学会大会, 25 Nov. 2011, 日本人工臓器学会
  • 磁気浮上小型摩擦血液ポンプの研究開発               
    浮田啓悟; 増澤徹; 小沼弘幸; 西村隆; 許俊鋭
    第49回日本人工臓器学会大会, 25 Nov. 2011, 日本人工臓器学会
  • 動圧軸受血液ポンプのための傾き制御用磁気軸受の研究開発               
    須田佳裕; 増澤徹; 一ノ瀬高紀; ティムス ダニエル; ウーリッヒ スタインセイファー
    第49回日本人工臓器学会大会, 25 Nov. 2011, 日本人工臓器学会
  • 乳児用人工心臓用小型遠心ポンプの設計と磁気浮上系の開発               
    長真啓; 増澤徹; 巽英介
    第49回日本人工臓器学会大会, 25 Nov. 2011, 日本人工臓器学会
  • 心機能の回復を目的とした磁気浮上型治療用血液ポンプの研究開発               
    山田悠; 増澤徹; 大森正芳; 前田裕之; 西村隆; 許俊鋭
    第49回日本人工臓器学会大会, 25 Nov. 2011, 日本人工臓器学会
  • 磁気浮上型全人工心臓の開発               
    西村宣彦; 増澤徹; ティムス ダニエル
    第49回日本人工臓器学会大会, 25 Nov. 2011, 日本人工臓器学会
  • 複合低エネルギを用いた生体組織技術の開発               
    丸岡寛明; 増澤徹; 青代敏行; 尾関和秀; 岸田晶夫; 樋上哲哉; 加藤綾子
    第49回日本人工臓器学会大会, 25 Nov. 2011, 日本人工臓器学会
  • 完全人工心臓用カスケードポンプ(ACCELPUMP)の左心用ポンプの評価               
    福長一義; 阿部祐輔; 山家智之; 巽英介; 増澤徹; 山根隆志; 妙中義之; 井街宏; 舟久保昭夫; 福井康裕
    第49回日本人工臓器学会大会, 25 Nov. 2011, 日本人工臓器学会
  • 両心室補助人工心臓への適用を目的としたアキシャル磁気浮上モータの浮上回転特性               
    栗田伸幸; 石川赴夫; 手塚孝幸; 増澤徹; ダニエル ティムズ
    第54回自動制御連合講演会, 19 Nov. 2011
  • 人工心臓用磁気浮上モータにおけるロータ変位の影響               
    小沼弘幸; 浮田啓悟; 増澤徹
    第54回自動制御連合講演会, 19 Nov. 2011
  • 複合低エネルギを用いた鉗子型接合装置の加熱制御               
    青代敏行; 増澤徹; 丸岡寛明; 尾関和秀; 加藤綾子; 樋上哲哉; 岸田晶夫
    第54回自動制御連合講演会, 19 Nov. 2011
  • A radial type self-bearing motor for small maglev regenerative blood pump               
    Keigo Ukita; Toru Masuzawa; Hiroyuki Onuma; Takashi Nishimura; Shunei Kyo
    The 20th MAGDA COnference in Pacific Asia, 14 Nov. 2011, 日本AEM学会
  • Development of Lorentz force type tilt control motor for rotary blood pumps               
    Takannori Ichinose; Toru Masuzawa; Ulrich Steinseifer; Daniel Timms
    The 20th MAGDA COnference in Pacific Asia, 14 Nov. 2011, 日本AEM学会
  • Miniaturized axial gap maglev motor with vector control for pediatric artificial hear               
    Masahiro Osa; Toru Masuzawa; Eisuke Tatsumi
    The 20th MAGDA COnference in Pacific Asia, 14 Nov. 2011, 日本AEM学会
  • BiVACORⓇ-A Magnetically levited biventricular artificial heart               
    Daniel Timms; Nobuyuki Kurita; Nicholas Greatrex; Toru Masuzawa
    The 20th MAGDA COnference in Pacific Asia, 14 Nov. 2011, 日本AEM学会
  • 誘導加熱を用いた手術用生体融着システムの検討               
    秋山直矢; 柴建次; 岸田昌夫; 尾関和秀; 増澤徹
    生活生命支援医療福祉工学系連合大会2011, 03 Nov. 2011, ライフサポート学会
  • 新規せん断負荷装置を使用したせん断流れ場における高粘度ウシ血液の溶血特性               
    丸山修; 玉置将也; 西田正浩; 山根隆志; 松田健一; 足立吉數; 増澤徹
    生活生命支援医療福祉工学系連合大会2011, 03 Nov. 2011, ライフサポート学会
  • 磁気浮上モータを用いた全人工心臓のポンプ性能               
    西村宣彦; 増澤徹; Daniel L Timms
    生活生命支援医療福祉工学系連合大会2011, 03 Nov. 2011, ライフサポート学会
  • 心機能回復のための治療用血液ポンプの研究開発               
    山田悠; 増澤徹; 西村隆; 許俊鋭
    生活生命支援医療福祉工学系連合大会2011, 03 Nov. 2011, ライフサポート学会
  • 人工心臓の性能評価のための循環系シミュレータの研究開発               
    須田佳裕; 増澤徹; 黒崎亘
    生活生命支援医療福祉工学系連合大会2011, 03 Nov. 2011, ライフサポート学会
  • 複合低エネルギによる鉗子型融着デバイスの温度制御技術               
    丸岡寛明; 増澤徹; 青代敏行; 尾関和秀; 加藤綾子; 岸田昌夫; 樋上哲哉
    生活生命支援医療福祉工学系連合大会2011, 03 Nov. 2011, ライフサポート学会
  • ストロンチウムアパタイト薄膜の作製とその細胞接着性評価               
    星野智大; 尾関和秀; 後藤哲哉; 増澤徹; 青木秀希
    生活生命支援医療福祉工学系連合大会2011, 03 Nov. 2011, ライフサポート学会
  • 微小振動下における細胞接着過程の検討               
    木村剛; 伊藤由樹子; 南広祐; 加藤綾子; 増澤徹; 岸田昌夫
    生活生命支援医療福祉工学系連合大会2011, 03 Nov. 2011, ライフサポート学会
  • スパッタリング法を用いたストロンチウムアパタイト薄膜の作製とその細胞応答性               
    星野智大; 尾関和秀; 後藤哲哉; 増澤徹; 青木秀希
    第19回茨城講演会, 26 Aug. 2011
  • 複合低エネルギによる金属と生体組織の接合技術               
    丸岡寛明; 増澤徹; 青代敏行; 尾関和秀; 加藤綾子; 岸田昌夫; 樋上哲哉
    第19回茨城講演会, 26 Aug. 2011
  • IPM型5軸制御セルフベアリングモータに関する研究               
    佐藤心平; 松田健一; 近藤良; 増澤徹
    第19回茨城講演会, 26 Aug. 2011
  • 補助人工心臓用アキシャル型磁気軸受の最適化に関する研究               
    西村宣彦; 増澤徹; 寺山昌幸; Daniel L Timms
    第19回茨城講演会, 26 Aug. 2011
  • 動圧軸受血液ポンプのための傾き制御機構の研究開発               
    須田佳裕; 増澤徹; 一ノ瀬高紀; ダニエル・ティムズ; ウーリッヒ・スタインセイファー
    第19回茨城講演会, 26 Aug. 2011
  • 循環補助用小型磁気浮上摩擦血液ポンプの研究開発               
    山田悠; 増澤徹; 浮田啓悟; 西村隆; 許俊鋭
    第19回茨城講演会, 26 Aug. 2011
  • コーン・シリンダー型レオメーターを使用したせん断流れ場におけるウシ血液の溶血特性、               
    丸山修; 玉置将也; 西田正浩; 山根隆志; 松田健一; 足立吉數; 増澤徹
    第19回茨城講演会, 26 Aug. 2011
  • 誘導加熱を用いた手術用生体融着システムの検討-周波数変化における温度特性-               
    秋山直矢; 柴建次; 岸田昌夫; 尾関和秀; 増澤徹
    第19回茨城講演会, 26 Aug. 2011
  • 小型ローレンツ型磁気浮上モータのサーボモータ制御               
    岡田養二; 三好理文; 増澤徹; 榎園正人
    第23回「電磁力関連のダイナミクス」シンポジウム, 18 May 2011
  • 人工心臓のための12突極ラジアル型磁気浮上モータにおける最適極数の検討               
    小沼弘幸; 浮田啓悟; 増澤徹
    第23回「電磁力関連のダイナミクス」シンポジウム, 18 May 2011
  • 全人工心臓用磁気浮上モータの磁気支持性能               
    増澤徹; 寺山昌幸; ダニエル L ティムス
    第23回「電磁力関連のダイナミクス」シンポジウム, 18 May 2011
  • 医療用高分子材料の表面特性と接着               
    中村奈緒子; 南広祐; 木村剛; 増澤徹; 岸田昌夫
    第50回日本生体医工学会大会, 29 Apr. 2011
  • 微小振動を用いた小型組織融着装置の開発               
    笠原康佑; 南広祐; 木村剛; 清水繁; 青代敏行; 増澤徹; 岸田昌夫
    第50回日本生体医工学会大会, 29 Apr. 2011
  • 乳児用人工心臓専用磁気浮上モータのベクトル制御               
    長真啓; 増澤徹; 巽英介
    第50回日本生体医工学会大会, 29 Apr. 2011
  • 磁気浮上型治療用血液ポンプの開発               
    北郷将史; 増澤徹; 西村隆; 許俊鋭
    第50回日本生体医工学会大会, 29 Apr. 2011
  • 人工心臓のための磁気浮上技術               
    増澤徹
    第50回日本生体医工学会大会, 29 Apr. 2011
  • 磁気浮上型両心補助用人工心臓の研究開発               
    寺山昌幸; 増澤徹; 西村宣彦; ダニエル L ティムス
    第50回日本生体医工学会大会, 29 Apr. 2011
  • 小型磁気浮上摩擦血液ポンプの研究開発               
    浮田啓悟; 増澤徹; 小沼弘幸; 西村隆; 許俊鋭
    第50回日本生体医工学会大会, 29 Apr. 2011
  • 動圧血液ポンプのための傾き制御モータの開発               
    一ノ瀬型の理; 増澤徹; ダニエル ティムス; ウーリッヒ スタインセイファー
    第50回日本生体医工学会大会, 29 Apr. 2011
  • 複合低エネルギによる鉗子型組織接合装置の開発               
    青代敏行; 増澤徹; 猪野学; 尾関和秀; 加藤綾子; 岸田昌夫; 木村剛; 樋上哲哉
    第50回日本生体医工学会大会, 29 Apr. 2011
  • 動圧軸受血液ポンプのための傾き制御モータの提案               
    一ノ瀬高紀; 増澤徹; Ulrich Steinseif; Daniel L Timms
    第39回人工心臓と補助循環懇話会, 05 Mar. 2011
  • 循環補助用超小型非接触摩擦ポンプの研究開発               
    浮田啓悟; 増澤徹; 小沼弘幸; 西村隆; 許俊鋭
    第39回人工心臓と補助循環懇話会, 05 Mar. 2011
  • ベクトル制御を用いた乳児用小型磁気浮上人工心臓の開発               
    長真啓; 増澤徹; 巽英介
    第20回ライフサポート学会フロンティア講演会, 05 Mar. 2011
  • スパッタリング法を用いたストロンチウムアパタイト薄膜の作製と物性評価               
    星野智大; 尾関和秀; 増澤徹; 青木秀希
    第20回ライフサポート学会フロンティア講演会, 05 Mar. 2011
  • 循環補助用小型磁気浮上摩擦ポンプの研究開発               
    山田悠; 増澤徹; 浮田啓悟; 小沼弘幸; 西村隆; 許俊鋭
    第20回ライフサポート学会フロンティア講演会, 05 Mar. 2011
  • 人工心臓用アキシャル型磁気軸受の最適化に関する研究               
    西村宣彦; 増澤徹; 寺山昌幸; Daniel L Timms
    第20回ライフサポート学会フロンティア講演会, 05 Mar. 2011
  • 動圧軸受血液ポンプのための小型傾き制御用磁気軸受の提案               
    須田佳裕; 増澤徹; 一ノ瀬隆紀; Ulrich Steinseifer; Daniel L Timms
    第20回ライフサポート学会フロンティア講演会, 05 Mar. 2011
  • 誘導加熱を用いた手術用生体融着システム               
    秋山直矢; 柴建次; 尾関和秀; 増澤徹
    第20回ライフサポート学会フロンティア講演会, 05 Mar. 2011
  • 微小振動を用いた小型組織融着装置の開発               
    笠原康佑; 南広祐; 木村剛; 清水繁; 青代敏行; 増澤徹; 岸田昌夫
    第20回ライフサポート学会フロンティア講演会, 05 Mar. 2011
  • 複合低エネルギを用いた金属と生体組織の接合技術               
    丸岡寛明; 増澤徹; 青代敏行; 尾関和秀; 加藤綾子; 岸田昌夫; 樋上哲哉
    第20回ライフサポート学会フロンティア講演会, 05 Mar. 2011
  • 人工心臓のための磁気浮上モータの設計               
    浮田啓悟; 増澤徹; 小沼弘幸; 西村隆; 許俊鋭
    日本生体医工学会関東支部若手研究者発表会2010, 27 Nov. 2010
  • 低エネルギ複合による鉗子型融着デバイスの開発               
    猪野学; 増澤徹; 青代敏行; 尾関和秀; 岸田晶夫; 木村剛; 樋上哲也; 加藤綾子
    日本生体医工学会関東支部若手研究者発表会2010, 27 Nov. 2010
  • 乳児用人工心臓用ダブルステータ型磁気浮上モータの開発               
    長真啓; 増澤徹; 巽英介
    第19回MAGDAコンファレンスin 札幌, 22 Nov. 2010
  • 治療用人工心臓のためのアキシャル型磁気浮上モータの開発               
    北郷将史; 増澤徹; 西村隆; 許俊鋭
    第19回MAGDAコンファレンスin 札幌, 22 Nov. 2010
  • 両心補助および全人工心臓を目指した磁気浮上人工心臓BiVACOR               
    増澤徹
    第48回日本人工臓器学会大会, 18 Nov. 2010
  • 複合低エネルギによる金属と生体組織接合技術の開発               
    青代敏行; 増澤徹; 猪野学; 尾関和秀; 加藤綾子; 岸田晶夫; 木村剛; 樋上哲也
    第48回日本人工臓器学会大会, 18 Nov. 2010
  • 両心補助用人工心臓のためのインペラ位置可変磁気浮上モータの開発               
    寺山昌幸; 増澤徹; Dniel L Timms
    第48回日本人工臓器学会大会, 18 Nov. 2010
  • 自己心機能回復を目的とした磁気浮上型人工心臓の開発               
    北郷将史; 増澤徹; 浮田啓悟; 西村隆; 許俊鋭
    第48回日本人工臓器学会大会, 18 Nov. 2010
  • ダブルステータ型磁気浮上モータを用いた乳児用人工心臓の開発               
    長真啓; 増澤徹; 巽英介
    日本定常流ポンプ研究会2010, 18 Nov. 2010
  • 磁気浮上人工心臓における浮上インペラの変動要因の検討               
    小沼弘幸; 浮田啓悟; 増澤徹
    第53回自動制御連合講演会, 05 Nov. 2010
  • オンチップ細胞機能制御のための圧電駆動型マイクロ細胞培養デバイスの開発 -細胞導入の効率化と細胞実験の基礎的検討-               
    山田侑平; 大竹英明; 柴田隆行; 川島貴弘; 永井萌土; 増澤徹; 木村剛; 岸田晶夫
    第53回自動制御連合講演会, 05 Nov. 2010
  • 弾性ヒンジ機構を用いたナノ振動細胞加振装置の開発               
    加藤綾子; 増澤徹; 青代敏行; 木村孝之; 岸田晶夫; 伊藤由樹子; 木村剛
    生活生命支援医療福祉工学系連合大会2010, 18 Sep. 2010
  • 微小振動融着法を用いた高分子コラーゲン間の接着               
    笠原康佑; 山本健二; 舩本誠一; 南広祐; 木村剛; 清水繁; 青代敏行; 増澤徹; 岸田晶夫
    生活生命支援医療福祉工学系連合大会2010, 18 Sep. 2010
  • 低エネルギ生体融着デバイスの発熱機構の開発               
    猪野学; 増澤徹; 青代敏行; 尾関和秀; 加藤綾子; 岸田晶夫; 樋上哲哉
    生活生命支援医療福祉工学系連合大会2010, 18 Sep. 2010
  • せん断流れ場における表面粗さに基づく溶血特性-高粘度血液を使用した実験-               
    丸山修; 江尻賢治; 西田正浩; 山根隆志; 永井文秀; 足立吉數; 増澤徹
    生活生命支援医療福祉工学系連合大会2010, 18 Sep. 2010
  • 乳児用小型磁気浮上人工心臓の開発               
    長真啓; 増澤徹; 巽英介
    生活生命支援医療福祉工学系連合大会2010, 18 Sep. 2010
  • 乳児用磁気浮上人工心臓の研究開発               
    一ノ瀬高紀; 長真啓; 増澤徹; 巽英介
    茨城講演会, 27 Aug. 2010
  • 急性心不全を対象とした磁気浮上人工心臓の研究開発               
    浮田啓悟; 北郷将史; 増澤徹; 西村隆; 許俊鋭
    茨城講演会, 27 Aug. 2010
  • Miniaturized magnetically levitated motor for pediatric artificial heart               
    Masahiro Osa; Toru Masuzawa; Eisuke Tatsumi
    12th International Symposium on Magnetic Bearings, 24 Aug. 2010
  • 心機能代替プロジェクト「小型な人工心臓が心臓を補助する」               
    増澤徹
    第49回日本生体医工学会大会, 25 Jun. 2010
  • Magnetically levitated therapeutic artificial heart               
    北郷将史; 増澤徹; 浮田啓悟; 西村隆; 許俊鋭
    第49回日本生体医工学会大会, 25 Jun. 2010
  • Current development status of artificial heart               
    増澤徹
    第49回日本生体医工学会大会, 25 Jun. 2010
  • Adhesion technology using integrated low level energies               
    加藤綾子; 増澤徹; 青代敏行; 河野貴宏; 岸田晶夫; 木村剛; 樋上哲哉
    第49回日本生体医工学会大会, 25 Jun. 2010
  • Nano vibration cell stimulus device               
    加藤綾子; 増澤徹; 青代敏行; 小林亜美子; 木村孝之; 岸田晶夫; 伊藤由樹子
    第49回日本生体医工学会大会, 25 Jun. 2010
  • Development of cell culture microdevice integrated with piezoelectric thin film actuator for on-chip regulation of cell functions               
    川島貴弘; 松澤勇太; 山田侑平; 柴田隆行; 増澤徹; 木村剛; 岸田晶夫
    第49回日本生体医工学会大会, 25 Jun. 2010
  • IPM型5軸制御セルフベアリングモータの提案               
    松田健一; Mohd Syawqei; 近藤良; 増澤徹
    第22回「電磁力関連のダイナミクス」シンポジウム, 19 May 2010
  • 低エネルギ複合による生体組織接合デバイスの開発               
    青代敏行; 増澤徹; 河野貴宏; 岸田晶夫; 樋上哲哉; 加藤綾子
    第22回「電磁力関連のダイナミクス」シンポジウム, 19 May 2010
  • シングルモータ方式磁気浮上型両心補助人工心臓の研究開発               
    寺山昌幸; 増澤徹; ダニエル L ティムス
    第22回「電磁力関連のダイナミクス」シンポジウム, 19 May 2010
  • 斜流式磁気浮上人工心臓に関する研究               
    松井寿定; 増澤徹; 巽英介
    第19回ライフサポート学会フロンティア講演会, 06 Mar. 2010
  • 急性心不全患者を対象とした治療用人工心臓の研究開発               
    浮田啓悟; 増澤徹; 北郷将史; 西村隆; 許俊鋭
    第19回ライフサポート学会フロンティア講演会, 06 Mar. 2010
  • 乳幼児用磁気浮上人工心臓の研究開発               
    一ノ瀬高紀; 増澤徹; 長真啓; 巽英介
    第19回ライフサポート学会フロンティア講演会, 06 Mar. 2010
  • オンチップ細胞機能制御のための圧電駆動型マイクロ細胞培養デバイスの開発               
    松澤勇太; 山田侑平; 柴田隆行; 川島貴弘; 増澤徹; 木村剛; 岸田晶夫
    第19回ライフサポート学会フロンティア講演会, 06 Mar. 2010
  • 乳児対象小型磁気浮上人工心臓の研究開発               
    長真啓; 増澤徹; 巽英介
    第38回人工心臓と補助循環懇話会, 26 Feb. 2010
  • 磁気浮上型両心補助用人工心臓の研究開発               
    寺山昌幸; 増澤徹; 北郷将史; Daniel L Timms
    第38回人工心臓と補助循環懇話会, 26 Feb. 2010
  • 人工心臓開発の要素技術の現状と展望 磁気浮上技術               
    増澤徹
    第38回人工心臓と補助循環懇話会, 26 Feb. 2010, [Invited]
  • 小型人工心臓のための全軸制御型磁気浮上斜流ポンプ               
    増澤徹; 松井寿定; 巽英介
    第22回代用臓器・再生医学研究会, 23 Jan. 2010
  • Magnetic suspension technology for 3rd generation blood pumps               
    Toru Masuzawa
    KNU & KAOC international symposium, 27 Nov. 2009, Kangwon National University Artificial Heart Center, Korea University Korea Artificial Organ Center
  • 磁束集束ローレンツ型磁気浮上モータの研究               
    岡田養二; 北郷将史; 伊佐川晃平; 増澤徹; 榎園正人
    第18回MAGDAコンファレンスin東京, 19 Nov. 2009
  • 両心補助人工心臓BiVACOR Bi-VAD用磁気浮上モータ               
    増澤徹; 佐々木瑛介; ダニエル L ティムス
    第18回MAGDAコンファレンスin東京, 19 Nov. 2009
  • 一体型アキシャル磁気浮上モータを用いた両心補助/全人工心臓BiVACOR               
    増澤徹; Daniel Timms
    日本定常流ポンプ研究会2009, 12 Nov. 2009
  • 高耐久性、高生体適合性を実現する磁気浮上技術               
    増澤徹
    第47回日本人工臓器学会大会, 12 Nov. 2009, [Invited]
  • 斜流式人工心臓の磁気浮上インペラに作用する流体力の検討               
    松井寿定; 増澤徹; 巽英介
    第47回日本人工臓器学会大会, 12 Nov. 2009
  • 小型両心補助用磁気浮上人工心臓の研究開発               
    北郷将史; 増澤徹; 松井寿定; 寺山昌幸; ティムズ ダニエル
    第47回日本人工臓器学会大会, 12 Nov. 2009
  • 新生児・乳児用小型人工心臓のための磁気浮上系の開発               
    長真啓; 増澤徹; 巽英介
    第47回日本人工臓器学会大会, 12 Nov. 2009
  • 両心補助用人工心臓のための一体型アキシャル磁気浮上モータの開発               
    北郷将史; 増澤徹; 佐々木瑛祐; Daniel Timms
    第7回生活支援工学系学会連合大会, 24 Sep. 2009
  • 食品容器を目的とした光触媒/DLC膜の消臭性評価               
    尾関和秀; 大石信洋; 宮沢真吾; 平栗健二; 増澤徹
    第7回生活支援工学系学会連合大会, 24 Sep. 2009
  • 弾性ヒンジを用いたナノ振動細胞加振装置の開発               
    小林亜美子; 増澤徹; 加藤綾子; 木村孝之; 木村剛; 岸田晶夫
    第7回生活支援工学系学会連合大会, 24 Sep. 2009
  • 微小振動融着法による高分子材料-生体組織間の接着に関する研究               
    山本健二; 木村剛; 南広祐; 加藤綾子; 清水繁; 樋上哲哉; 増澤徹; 岸田晶夫
    第7回生活支援工学系学会連合大会, 24 Sep. 2009
  • せん断流れ場において表面粗さに基づく溶血特性-せん断応力の増加と溶血量増加の相関               
    丸山修; 阿部純也; 西田正浩; 山根隆志; 大島郁也; 永井文秀; 足立吉數; 増澤徹
    第7回生活支援工学系学会連合大会, 24 Sep. 2009
  • オンチップ細胞機能制御のための圧電駆動型マイクロ細胞培養デバイスの開発               
    松澤勇太; 柴田隆行; 川島貴弘; 増澤徹; 木村剛; 岸田晶夫
    第7回生活支援工学系学会連合大会, 24 Sep. 2009
  • 高性能で小型化が可能な5軸制御セルフベアリングモータの開発               
    松田健一; 石川達也; 近藤良; 増澤徹
    日本機械学会Dynamics and Design Conference 2009, 03 Sep. 2009
  • 磁束集束ローレンツ浮上モータの提案               
    岡田養二; 北郷将史; 増澤徹; 榎園正人
    日本機械学会Dynamics and Design Conference 2009, 03 Sep. 2009
  • CVD法により作成されたDLC膜の有機分子の吸着特性評価               
    宮澤真吾; 尾関和秀; 平栗健二; 増澤徹
    茨城講演会, Aug. 2009
  • 歯科インプラント実習を目的としたアパタイト/レジン模擬骨に関する研究               
    稲垣尭久; 尾関和秀; 増澤徹; 青木秀希; 宇佐美諒真
    茨城講演会, Aug. 2009
  • 新生児・乳幼児用人工心臓のための磁気浮上モータの開発               
    長真啓; 増澤徹; 巽英介
    茨城講演会, Aug. 2009
  • 人工心臓適用を目指した5軸制御セルフベアリングモータの小型化に関する研究               
    寺山昌幸; 松田健一; 増澤徹; 近藤良
    茨城講演会, Aug. 2009
  • 粗さを付加したときの表面付近のせん断応力場に関する数値解析               
    西田正浩; 丸山修; 山根隆志; 増澤徹; 永井文秀
    茨城講演会, Aug. 2009
  • 血液のせん断流れ場において金属材料表面粗さが溶血に及ぼす影響               
    丸山修; 西田正浩; 山根隆志; 永井文秀; 足立吉數; 増澤徹
    茨城講演会, Aug. 2009
  • 4軸制御型磁気軸受を用いた磁気浮上クリーンポンプの研究開発               
    黒須寛秋; 増澤徹; 加藤綾子; 小沼弘幸; 柿原功一
    日本AEM学会, Jun. 2009
  • 両心室補助人工心臓への応用を目的としたアキシャル磁気浮上モータの開発               
    栗田伸幸; Daniel Timms; Nicholas Greatrex; 増澤徹
    第21回「電磁力関連のダイナミクス」シンポジウム, 20 May 2009
  • 5軸制御セルフベアリングモータの小型化に関する研究               
    松田健一; 寺山昌幸; 増澤徹; 近藤良
    第21回「電磁力関連のダイナミクス」シンポジウム, 20 May 2009
  • 複合低エネルギ組織融着技術の研究開発               
    河野貴宏; 増澤徹; 加藤綾子; 尾関和秀; 岸田晶夫; 木村剛; 樋上哲哉
    第21回「電磁力関連のダイナミクス」シンポジウム, 20 May 2009
  • 斜流式人工心臓のための磁気浮上モータシステムの開発               
    松井寿定; 増澤徹; 巽英介
    第21回「電磁力関連のダイナミクス」シンポジウム, 20 May 2009
  • 医用アクチュエータの最新の話題、電磁駆動アクチュエータ(回転):磁気浮上モータ               
    増澤徹
    第48回日本生体医工学会大会, 23 Apr. 2009, [Invited]
  • 顕微鏡に設置可能なナノ振動細胞刺激装置の開発               
    小林亜美子; 増澤徹; 加藤綾子; 木村孝之; 岸田晶夫
    第48回日本生体医工学会大会, 23 Apr. 2009
  • 微笑振動付加による種々の細胞の基材への接着と増殖の効果               
    吾郷友亮; 伊藤由樹子; 木村剛; 南広祐; 加藤綾子; 増澤徹; 岸田晶夫
    第48回日本生体医工学会大会, 23 Apr. 2009
  • ナノ振動融着法による高分子材料‐生体組織間の接着に関する研究               
    山本健二; 宮廻寛; 木村剛; 南広祐; 加藤綾子; 栗田公夫; 樋上哲哉; 増澤徹; 岸田晶夫
    第48回日本生体医工学会大会, 23 Apr. 2009
  • 複合低エネルギ-を利用した組織融着に関する研究               
    河野貴宏; 増澤徹; 加藤綾子; 尾関和秀; 岸田晶夫; 木村剛; 樋上哲哉
    第48回日本生体医工学会大会, 23 Apr. 2009
  • 斜流式人工心臓用磁気軸受の開発               
    松井寿定; 増澤徹; 巽英介
    第48回日本生体医工学会大会, 23 Apr. 2009
  • フッ素添加DLC膜のタンパク質吸着特性評価               
    尾関和秀; 平栗健二; 増澤徹
    第48回日本生体医工学会大会, 23 Apr. 2009
  • 身体活動度モニタリングスーツによる日常生活活動のエネルギー消費量推定               
    加藤綾子; 増澤徹; 石井博徳; 植野彰規
    第48回日本生体医工学会大会, 23 Apr. 2009
  • 培養細胞を対象としたナノ振動加振装置の振動特性解析               
    小林亜美子; 増澤徹; 加藤綾子; 木村孝之; 岸田晶夫
    日本機械学会関東支部第15期総会講演会, 06 Mar. 2009
  • 複合低エネルギを利用した組織融着技術に関する研究               
    河野貴宏; 増澤徹; 加藤綾子; 尾関和秀; 岸田晶夫; 木村剛; 樋上哲哉
    日本機械学会関東支部第15期総会講演会, 06 Mar. 2009
  • DT-QOL向上のための技術開発とは?デバイス故障と闘う軸受技術               
    増澤徹
    第37回人工心臓と補助循環懇話会, 27 Feb. 2009, [Invited]
  • 多軸制御型斜流式磁気浮上人工心臓の研究開発               
    松井寿定; 増澤徹; 巽英介
    第37回人工心臓と補助循環懇話会, 27 Feb. 2009
  • 茨城大学における磁気浮上型人工心臓の研究開発               
    増澤徹
    つくば医工連携フォーラム2009, 14 Jan. 2009
  • 両心補助用人工心臓BIVACOR Bi-VADの開発               
    増澤徹; 佐々木瑛祐; 栗田伸幸; ダニエル ティムス
    日本定常流ポンプ研究会, 27 Nov. 2008
  • 人工内臓から内蔵機器へ-人工臓器“体内埋込技術”の新展開               
    増澤徹
    第46回日本人工臓器学会大会, 27 Nov. 2008
  • 人工心臓の仕組み               
    増澤徹
    第46回日本人工臓器学会大会, 27 Nov. 2008
  • 非定常CFD解析による磁気浮上型遠心ポンプのインペラに働く流体力の推定               
    増澤徹; 松井寿定; 田中伸厚; 築谷朋典; 銭逸
    第46回日本人工臓器学会大会, 27 Nov. 2008
  • 種々の細胞機能に対する機械的ナノ振動刺激の影響に関する検討               
    伊藤由樹子; 吾郷友亮; 木村剛; 南広祐; 小林亜美子; 加藤綾子; 増澤徹; 岸田晶夫
    第46回日本人工臓器学会大会, 27 Nov. 2008
  • 斜流式磁気浮上型人工心臓の開発               
    松井寿定; 増澤徹; 巽英介
    第46回日本人工臓器学会大会, 27 Nov. 2008
  • 表面粗さを付加した回転せん断負荷装置内の流れと溶血との関係               
    西田正浩; 丸山修; 山根隆志; 永井文秀; 大島郁也; 増澤徹
    第46回日本人工臓器学会大会, 27 Nov. 2008
  • 4軸制御型磁気軸受を用いた磁気浮上クリーンポンプの研究開発               
    黒須寛秋; 増澤徹; 加藤綾子; 小沼弘幸; 柿原功一
    第17回MAGDAコンファレンスin 日立, 20 Nov. 2008
  • 5軸制御型セルフベアリングモータの傾き制御特性               
    石川達也; 松田健一; 増澤徹; 近藤良
    第17回MAGDAコンファレンスin 日立, 20 Nov. 2008
  • 両心補助人工心臓BIVACOR Bi-VADの磁気浮上システムの開発               
    佐々木瑛祐; 増澤徹; 栗田伸幸
    リニアドライブ研究会, Nov. 2008
  • 複合低エネルギ利用による低損傷生体組織融着技術における伝熱特性の影響               
    加藤綾子; 増澤徹; 河野貴宏; 木村孝之; 尾関和秀; 岸田晶夫; 木村剛; 樋上哲哉; 佐藤裕一郎; 山本芳郎
    第6回生活支援工学系学会連合大会, 17 Sep. 2008
  • せん断流れ場において表面粗さの大きさとせん断応力が溶血に及ぼす影響               
    丸山修; 川口雄大; 米谷幸治; 西田正浩; 山根隆志; 永井文秀; 足立吉數; 増澤徹
    第6回生活支援工学系学会連合大会, 17 Sep. 2008
  • 表面粗さを付加した回転せん断負荷装置内の流れ解析               
    西田正浩; 塚越洋之; 川口雄大; 丸山修; 山根隆志; 増澤徹; 永井文秀
    第6回生活支援工学系学会連合大会, 17 Sep. 2008
  • 新しい低損傷生体組織融着技術によるステントグラフト融着の評価               
    加藤綾子; 増澤徹; 河野貴宏; 木村孝之; 尾関和秀; 岸田晶夫; 木村剛; 樋上哲哉; 佐藤裕一郎; 山本芳郎
    第6回生活支援工学系学会連合大会, 17 Sep. 2008
  • 両心補助用人工心臓BIVACOR Bi-VADのための磁気浮上系の開発               
    増澤徹; 佐々木瑛祐; 栗田伸幸; ダニエル ティムズ
    第6回生活支援工学系学会連合大会, 17 Sep. 2008
  • スパッタHA薄膜の薬剤吸着特性と抗血栓性評価               
    尾関和秀; 吉原裕貴; 増澤徹
    第6回生活支援工学系学会連合大会, 17 Sep. 2008
  • 身体活動度モニタリングスーツによるエネルギー消費量の推定               
    石井博徳; 増澤徹; 加藤綾子
    第6回生活支援工学系学会連合大会, 17 Sep. 2008
  • Ti・ステンレス基材に対するSi中間層を用いたDLC膜の密着性の研究               
    佐藤実; 永島勲; 尾関和秀; 増澤徹
    茨城講演会, Sep. 2008
  • 斜流式磁気浮上人工心臓用ポンプの研究開発               
    松井寿定; 増澤徹; 巽英介
    茨城講演会, Sep. 2008
  • 表面粗さを付加した回転せん断付加装置内の数値解析               
    西田正浩; 柳生祥丈; 丸山修; 山根隆志; 増澤徹; 永井文秀; 大島郁也
    茨城講演会, Sep. 2008
  • カテーテル型ステント融着マニピュレータに関する開発               
    河野貴宏; 増澤徹; 加藤綾子; 尾関和秀; 岸田晶夫; 木村剛; 樋上哲哉; 佐藤裕一郎; 山本芳郎
    茨城講演会, Sep. 2008
  • ナノ振動細胞刺激装置の振動特性解析               
    小林亜美子; 増澤徹; 加藤綾子; 木村孝之; 岸田晶夫; 木村剛
    茨城講演会, Sep. 2008
  • 5-DOF controlled self-bearing motor               
    Tatsuya Ishikawa; Ken-ichi Matsuda; Toru Masuzawa; Ryou Kondo
    11th International Symposium on Magnetic Bearings, 26 Aug. 2008
  • Wide gap magnetic bearing system for a magnetically suspended clean pump               
    Hiroaki Kurosu; Toru Masuzawa; Ayako Katoh; Kenichi Suzuki
    11th International Symposium on Magnetic Bearings, 26 Aug. 2008
  • Evaluation of a new hybrid magnetic bearing for the bivacor BI-VAD/TAH               
    Eisuke Sasaki; Toru Masuzawa; Nobuyuki Kurita; Daniel Timms
    ASAIO 54th Annual conference, 19 Jun. 2008
  • 扁平型ハイブリッド磁気軸受の最適化設計               
    加藤綾子; 増澤徹; 鈴木健一
    第20回「電磁力関連のダイナミクス」シンポジウム, 21 May 2008
  • 複合低エネルギを用いた生体組織と人工物の融着技術の開発               
    加藤綾子; 増澤徹; 尾関秀和; 木村孝之; 岸田晶夫; 木村剛; 樋上哲哉; 佐藤裕一郎; 山本芳郎
    第47回日本生体医工学会大会, 08 May 2008
  • 身体活動度モニタスーツの開発               
    石井博徳; 増澤徹; 加藤綾子
    第47回日本生体医工学会大会, 08 May 2008
  • カテーテル型ステント融着マニピュレータに関する開発研究               
    河野貴宏; 増澤徹; 加藤綾子; 濱口崇志; 尾関和秀; 木村孝之; 岸田晶夫; 木村剛; 樋上哲哉; 佐藤裕一郎; 山本芳郎
    人と福祉を支える技術フォーラム2008, 01 Mar. 2008, ライフサポート学会
  • 斜流式人工心臓用ポンプの研究開発               
    松井寿定; 増澤徹; 太田晶子; 巽英介
    人と福祉を支える技術フォーラム2008, 01 Mar. 2008, ライフサポート学会
  • 磁気浮上人工心臓ポンプの非定常CFD解析               
    太田晶子; 増澤徹; 田中伸厚; 銭逸; 築谷朋典
    人と福祉を支える技術フォーラム2008, 01 Mar. 2008, ライフサポート学会
  • 「細胞を対象とした工学研究」の共通概念の構築―機械工学サイドから―               
    増澤徹
    人と福祉を支える技術フォーラム2008, 01 Mar. 2008, ライフサポート学会
  • ナノ振動細胞刺激装置の開発研究               
    小林亜美子; 増澤徹; 加藤綾子; 木村孝之; 橋本健児; 岸田晶夫; 木村剛
    人と福祉を支える技術フォーラム2008, 01 Mar. 2008, ライフサポート学会
  • 両心補助用人工心臓のためのハイブリッド型磁気軸受の開発               
    佐々木瑛祐; 増澤徹
    第36回人工心臓と補助循環懇話会, Mar. 2008, 東京電機大学理工学部電子情報工学科 福井康裕(世話人)
  • 小型磁気浮上斜流ポンプの研究開発               
    黒須寛秋; 鈴木健一; 加藤綾子; 増澤徹
    第36回人工心臓と補助循環懇話会, Mar. 2008, 東京電機大学理工学部電子情報工学科 福井康裕(世話人)
  • 5軸能動制御型セルフベアリングモータの開発               
    松田健一; 石川達也; 増澤徹; 近藤良
    第16回MAGDAコンファレンスin京都, Nov. 2007, 日本AEM学会
  • 磁気軸受用センサの開発               
    岡田養二; 石川達也; 増澤徹; 近藤良
    第16回MAGDAコンファレンスin京都, Nov. 2007, 日本AEM学会
  • 扁平型ハイブリッド磁気軸受の開発               
    鈴木健一; 増澤徹
    第16回MAGDAコンファレンスin京都, Nov. 2007, 日本AEM学会
  • ハイブリッド型磁気軸受を用いた磁気浮上型血液ポンプの開発               
    鈴木健一; 増澤徹
    第5回生活支援工学系学会連合大会, Oct. 2007, ライフサポート学会
  • 循環系治療機器の工学的評価に関する研究               
    石塚健太郎; 増澤徹; 加藤綾子; 岸田晶夫; ダニエルLティムス
    第5回生活支援工学系学会連合大会, Oct. 2007, ライフサポート学会
  • 磁気浮上人工心臓ポンプの非定常CFD解析               
    太田晶子; 増澤徹; 田中伸厚; 銭逸; 築谷朋典
    第5回生活支援工学系学会連合大会, Oct. 2007, ライフサポート学会
  • ナノ振動刺激時における細胞膜近傍の剪断応力解析               
    橋本健児; 増澤徹; 木村孝之; 加藤綾子; 岸田晶夫; 木村剛
    第5回生活支援工学系学会連合大会, Oct. 2007, ライフサポート学会
  • 低エネルギ複合による生体接合技術の開発               
    濱口崇志; 増澤徹; 加藤綾子; 尾関和秀; 木村孝之; 岸田晶夫; 木村剛; 樋上哲哉; 佐藤裕一郎; 山本芳郎
    第5回生活支援工学系学会連合大会, Oct. 2007, ライフサポート学会
  • 層流せん断流れ場において材料表面粗さが溶血に及ぼす影響               
    川口雄大; 丸山修; 西田正弘; 山根隆志; 永井文秀; 足立吉數; 増澤徹
    第5回生活支援工学系学会連合大会, Oct. 2007, ライフサポート学会
  • 人工心臓のための小型ハイブリッド型磁気軸受               
    増澤徹; 鈴木健一; 黒須寛秋; 加藤綾子
    電気学会研究会, Oct. 2007, 電気学会
  • 健康管理ロボットによる食事摂取量計測に関する基礎的研究               
    石井博徳; 増澤徹; 加藤綾子
    茨城講演会, 28 Sep. 2007, 日本機械学会
  • 循環系シミュレータの開発と磁気浮上型人工心臓の評価               
    黒須寛秋; 増澤徹; 石塚健太郎; Daniel L Timms
    茨城講演会, 28 Sep. 2007, 日本機械学会
  • ダブルバイアス磁束型磁気浮上血液ポンプの開発               
    佐々木瑛祐; 増澤徹; 小沼弘幸
    茨城講演会, 28 Sep. 2007, 日本機械学会
  • SPH法と格子法の組み合わせによるメゾスケール血流解析               
    中村信之; 田中伸厚; 増澤徹
    茨城講演会, 28 Sep. 2007, 日本機械学会
  • 人工心臓内の材料表面粗さによるせん断応力と血球破壊に関する研究               
    川口雄大; 丸山修; 西田正弘; 山根隆志; 永井文秀; 足立吉數; 増澤徹
    茨城講演会, 28 Sep. 2007, 日本機械学会
  • 人工心臓の最近の進歩               
    増澤徹
    体外循環と補助循環2007 第23回日本人工臓器学会教育セミナー, Jul. 2007, 日本人工臓器学会
  • 人工心臓用ダブルバイアス磁束型磁気浮上システム               
    増澤徹; 加藤裕介; 佐々木瑛祐; 小沼弘幸
    第19回電磁力関連のダイナミクスシンポジウム, May 2007, 日本機械学会
  • ナノ振動負荷時の細胞周りの剪断応力解析               
    橋本健児; 増澤徹; 木村孝之; 加藤綾子; 岸田晶夫; 木村剛
    第46回日本生体医工学会大会, Apr. 2007, 日本生体医工学会
  • 人工心臓ポンプ内の流れが磁気浮上インペラに及ぼす影響               
    太田晶子; 増澤徹; 銭逸
    第46回日本生体医工学会大会, Apr. 2007, 日本生体医工学会
  • 複数低エネルギーの複合化による新しい生体接合技術の開発               
    濱口崇志; 増澤徹; 加藤綾子; 尾関和秀; 木村孝之; 岸田晶夫; 木村剛; 樋上哲哉; 佐藤裕一郎; 山本芳郎
    第46回日本生体医工学会大会, Apr. 2007, 日本生体医工学会
  • 磁気浮上型人工心臓評価のための循環系シミュレータの開発               
    黒須寛秋; 増澤徹; 石塚健太郎
    人と福祉を支える技術フォーラム2007, 03 Mar. 2007, ライフサポート学会
  • 磁気浮上血液ポンプの高機能化に関する研究               
    佐々木瑛祐; 増澤徹; 加藤裕介
    人と福祉を支える技術フォーラム2007, 03 Mar. 2007, ライフサポート学会
  • 斜流ポンプ人工心臓のための小型磁気軸受の開発               
    中山直久; 増澤徹; 鈴木健一; 加藤綾子
    人と福祉を支える技術フォーラム2007, 03 Mar. 2007, ライフサポート学会
  • 健康管理パーソナルロボットに関する基礎的研究               
    石井博徳; 増澤徹; 加藤綾子
    人と福祉を支える技術フォーラム2007, 03 Mar. 2007, ライフサポート学会
  • 定常流ポンプ用磁気浮上技術               
    増澤徹
    日本定常流ポンプ研究会・第12回日本臨床補助人工心臓研究会, 31 Oct. 2006
  • 定常流ポンプ用磁気浮上技術               
    増澤徹
    日本定常流ポンプ研究会・第12回日本臨床補助人工心臓研究会, Oct. 2006
  • 中堅研究者からパイオニアへ:研究者として進化するには?               
    増澤徹
    第44回日本人工臓器学会大会, Oct. 2006, [Invited]
  • 2次元的な磁束経路を形成するハイブリッド型磁気軸受の開発               
    鈴木健一; 増澤徹
    リニアドライブ研究会, Oct. 2006
  • 重複バイアス磁束ハイブリッド型磁気軸受の開発               
    小沼弘幸; 村上倫子; 柿原功一; 増澤徹
    リニアドライブ研究会, Oct. 2006
  • バイアス磁束誘導型磁気軸受を用いた人工心臓の開発               
    加藤裕介; 増澤徹
    リニアドライブ研究会, Oct. 2006
  • 磁気浮上型人工心臓のポンプ流量推定に関する研究               
    石塚健太郎; 増澤徹
    第44回日本人工臓器学会大会, Oct. 2006
  • 人工心臓のためのバイアス磁石対向式ハイブリッド型磁気軸受の開発               
    鈴木健一; 増澤徹
    第44回日本人工臓器学会大会, Oct. 2006, [Invited]
  • 人工心臓用磁気軸受の最適設計法の開発               
    中山直久; 鈴木健一; 増澤徹
    第44回日本人工臓器学会大会, Oct. 2006
  • バイアス磁束誘導型磁気軸受を応用した体外循環用血液ポンプの開発               
    加藤裕介; 増澤徹
    第44回日本人工臓器学会大会, Oct. 2006
  • 振動エネルギー利用による生体接合技術の開発               
    濵口崇志; 加藤綾子; 尾関和秀; 岸田晶夫; 木村剛; 樋上哲哉; 増澤徹
    第44回日本人工臓器学会大会, Oct. 2006
  • 人工心臓の血液接触面の表面粗さが溶血に及ぼす影響               
    丸山修; 米谷幸治; 西田正浩; 山根隆志; 足立吉數; 大島郁也; 増澤徹
    茨城講演会, 15 Sep. 2006
  • SPH法を用いた血流解析における赤血球モデルの改良               
    中村信之; 田中伸厚; 増澤徹
    茨城講演会, 15 Sep. 2006
  • バイアス磁束誘導型磁気浮上人工心臓の開発               
    加藤裕介; 増澤徹
    茨城講演会, 15 Sep. 2006
  • 人工心臓用磁気軸受の最適設計               
    中山直久; 増澤徹; 加藤綾子; 鈴木健一
    茨城講演会, 15 Sep. 2006
  • 人工心臓用バイパス磁石対向式ハイブリッド型磁気軸受               
    鈴木健一; 増澤徹; 青砥良平
    茨城講演会, 15 Sep. 2006
  • ナノ振動が細胞に与える影響               
    橋本健児; 草間淳; 加藤綾子; 岸田晶夫; 木村剛; 木村孝之; 増澤徹
    第4回生活支援工学系学会連合大会, Sep. 2006
  • 機械的微小振動刺激の細胞分化に及ぼす影響に関する検討               
    伊藤由樹子; 木村剛; 南広祐; 加藤綾子; 増澤徹; 岸田晶夫
    第4回生活支援工学系学会連合大会, Sep. 2006
  • 振動エネルギー利用による生体接合技術の開発               
    濵口崇志; 加藤綾子; 岸田晶夫; 木村剛; 樋上哲哉; 増澤徹
    第4回生活支援工学系学会連合大会, Sep. 2006
  • 磁気浮上型人工心臓のポンプ流量推定に関する研究               
    石塚健太郎; 増澤徹
    第4回生活支援工学系学会連合大会, Sep. 2006
  • 回転せん断負荷装置内の流れ解析               
    西田正浩; 丸山修; 山根隆志; 増澤徹; 大島郁也
    第4回生活支援工学系学会連合大会, Sep. 2006
  • せん断流れ場において表面粗さの大きさと面積が溶血に及ぼす影響               
    丸山修; 沼田雄亮; 米谷幸治; 西田正浩; 山根隆志; 足立吉數; 大島郁也; 増澤徹
    第4回生活支援工学系学会連合大会, Sep. 2006
  • 人工心臓用小型ハイブリッド磁気軸受の開発               
    増澤徹; 齋藤喬
    第18回電磁力関連のダイナミクスシンポジウム, May 2006
  • 磁気浮上型人工心臓の駆動状態推定方法の開発               
    増澤徹
    第45回日本生体医工学会大会, May 2006
  • ナノ振動と細胞機能制御               
    増澤徹; 加藤綾子; 草間淳; 木村孝之; 岸田晶夫; 木村剛; 柴田隆行
    第45回日本生体医工学会大会, May 2006
  • 超音波メス制御による手術支援               
    加藤綾子; 増澤徹; 樋上哲哉; 岸田晶夫; 佐藤裕一郎
    第45回日本生体医工学会大会, May 2006
  • Characteritics of a Two-dimensional Integrated Magnetic Sensor for Position Sensing and Motor Control,               
    T Kimura; K Takasaki; T Masuzawa
    IEEJ Trans, Jan. 2006
  • 磁気浮上型人工心臓のポンプ流量推定に関する研究               
    石塚健太郎; 増澤徹
    第44回日本人工臓器学会大会予稿集, Jan. 2006
  • Quick touch術式効果の工学的評価と超音波メス制御方式の検討               
    能田高行; 増澤徹; 樋上哲哉; 岸田晶夫; 佐藤裕一郎
    第3回生活支援工学系 学会連合大会講演予稿集, Dec. 2005
  • ナノ微小振動と細胞               
    増澤徹; 草間淳; 木村孝之; 柴田隆行; 岸田晶夫; 木村剛
    第3回生活支援工学系学会連合大会講演予稿集, Dec. 2005
  • SPH法による血流シミュレーションの赤血球モデルの比較               
    早川裕次郎; 田中伸厚; 増澤徹
    第3回生活支援工学系学会 連合大会講演予稿集, Dec. 2005
  • せん断流れ場において表面粗さが溶血に及ぼす影響               
    丸山修; 西田正浩; 山根隆志; 大島郁也; 足立吉數; 増澤徹
    第3回生活支援工学系学会連合大会講演予稿集, Dec. 2005
  • 磁気浮上型人工心臓の技術課題               
    増澤徹
    日本定常流ポンプ研究会, 30 Nov. 2005
  • 磁気浮上モーターの特性評価を目的とした二次元磁気センサの計測               
    高崎慶吾; 木村孝之; 増澤徹
    電気学会研究会資料, 17 Nov. 2005
  • 細胞機能制御のためのMEMS細胞加振デバイスの開発               
    吉田典央; 柴田隆行; 堀内宰; 増澤徹; 岸田晶夫
    電気学会研究会資料, 17 Nov. 2005
  • 人工心臓応用を目指した新しいハイブリッド型磁気軸受の開発               
    齋藤喬; 中山直久; 増澤徹
    電気学会研究会資料, Nov. 2005
  • 人工心臓用磁気浮上モータの小型化と高効率化               
    増澤徹; 加藤裕介
    電気学会研究会資料, Nov. 2005
  • 人工心臓に用いる磁性流体封入型動圧軸受に関する研究               
    小林秀法; 増澤徹; 大島郁也
    茨城講演会 講演論文集, 09 Sep. 2005
  • 磁気浮上型小型ターボポンプの開発               
    中山直久; 齋藤喬; 西田正浩; 山根隆志; 増澤徹
    茨城講演会 講演論文集, 09 Sep. 2005
  • 人工心臓用アキシャル型磁気浮上遠心ポンプの小型化               
    加藤裕介; 増澤徹
    茨城講演会 講演論文集, 09 Sep. 2005
  • Magnetically suspended pumps for artificial heart               
    Toru Masuzawa
    8th Japanese-Polish Seminar on New Engineering Methods Supporting Human Life, 55,, Sep. 2005
  • Magulev pump and zero power control               
    ToruMasuzawa; Hiroyuki Onuma
    13th Congress of the ISRBP, Sep. 2005
  • Hemolysis resulting from surface roughness under shear flow               
    Osamu Maruyama; Masahiro Nishida; Takashi Yamane; Ikuya Oshima; Yoshikazu Adachi; Toru Masuzawa
    13th Congress of the ISRBP, OS-2-3, 62, Sep. 2005
  • Accuracy enhancement of flow visualization analysis for hemocompatibility evaluation of rotary blood pumps               
    M Nishida; T Yamane; H Kogure; T Chida; T Masuzawa
    13th Congress of the ISRBP, PA-4,116, Sep. 2005
  • Magunetically suspended pumps for artificial heart               
    Toru Masuzawa
    第8回日本ポーランドセミナー, Sep. 2005
  • 磁気浮上ポンプによるポンプ室内流体力の推定               
    増澤徹
    第3回生活支援工学系学会連合大会 講演予稿集, Aug. 2005
  • Cell function control by nano vibrations               
    J Kusama; T Kimura; T Shibata; A Kishida; T
    The First International Student Conference at Ibaraki University, 13 Jul. 2005
  • Development of a novel hybrid type magnetic bearing and application to micro centrifugal pumps for artificial hearts,               
    Saito T; Nakayama N; Kakihara K; Okamoto T; Masuzawa T
    The First International Student Conference at Ibaraki University, Jul. 2005
  • Development of two-Dimensional magnetic sensors for characterization of magnetic levitated motors               
    K Takasaki; T Kimura; T Masuzawa
    The First International Student Conference, Jul. 2005
  • 人工心臓のための磁気浮上軸流ポンプの開発               
    齋藤喬; 山根隆志; 西田正浩; 増澤徹
    第43巻特別号 第44回日本生体医工学会大会プログラム・論文集, Apr. 2005
  • 人工心臓のためのアキシャル型3軸制御磁気浮上モータの改良               
    加藤裕介; 村上倫子; 小沼弘幸; 増澤徹
    第44回日本生体医工学会大会プログラム・論文集, Apr. 2005
  • 人工心臓用3軸制御型磁気浮上遠心ポンプの開発               
    加藤裕介; 村上倫子; 小沼弘幸; 増澤徹
    日本機械学会関東支部第11期総会 講演会講演論文集, Mar. 2005
  • 磁気動圧浮上回転式ポンプ               
    山根隆志; 西田正浩; 丸山修; 小西義昭; 山城直人; 増澤徹; 岡田養二
    日本機械学会関東支部第11期総会講演会 講演論文集, Mar. 2005
  • 人工心臓のための5軸制御型磁気浮上軸流ポンプの開発               
    中山直久; 齊藤喬; 西田正浩; 山根隆志; 増澤徹
    日本機械学会関東支部第11期 総会講演会講演論文集, Mar. 2005
  • 径方向支持型磁気浮上遠心血液ポンプの開発現況               
    小沼弘幸; 岡田養二; 築谷朋典; 巽英介; 妙中義之; 増澤徹
    第33回人工心臓と補助循環懇話会 プログラム・抄録集, Jan. 2005
  • 5軸制御型磁気浮上軸流ポンプの開発               
    齊藤喬; 山根隆志; 西田正浩; 増澤徹
    第33回人工心臓と補助循環懇話会プログラム・抄録集, Jan. 2005
  • ナノバイブレーションによる細胞機能制御               
    草間淳; 石丸正臣; 木村孝之; 柴田隆行; 岸田晶夫; 増澤徹
    第33回人工心臓と補助循環懇話会プログラム・抄録集, Jan. 2005
  • アキシャル型磁気浮上モータを用いた人工心臓用遠心ポンプの開発               
    小沼弘幸; 増澤徹; 加藤勇
    日本機械学会論文集, Jan. 2005
  • 人工心臓用ラジアル型磁気浮上遠心ポンプの最適化               
    小沼弘幸; 岡田養二; 増澤徹
    第17回バイオエンジニアリング講演会講演論文集, Jan. 2005
  • 血流のミクロ・シミュレーション               
    高野龍雄; 田中伸厚; 増澤徹
    日本機械学会論文集, Nov. 2004
  • 医療機器の今後10年間の展望、人工臓器-人工心臓を中心に-、               
    増澤徹
    医科器械学 創立80周年記念誌, Jun. 2004
  • Feed Forward医療の提唱-新しいエムイ-技術創出-               
    増澤徹
    生体医工学 第42巻特別号 第43回日本エム・イー学会大会プログラム・論文集, May 2004
  • 径方向支持型磁気浮上モータを用いた完全磁気浮上遠心血液ポンプの改良、               
    小沼弘幸; 増澤徹; 岡田養二; 築谷朋典; 妙中義之
    生体医工学 第42巻特別号第43回日本エム・イー学会大会プログラム・論文集, May 2004
  • アキシャル型3軸制御磁気浮上遠心血液ポンプの開発               
    村上倫子; 増澤徹; 小沼弘幸
    生体医工学第42巻特別号 第43回日本エム・イー学会大会プログラム・論文集, May 2004
  • インピーダンスを利用した穿刺深さ計測法の開発、               
    増澤徹; 小林誉之; 孫彦斌; 柴田隆行; 岸田晶夫
    生体医工学第42巻特別号 第43回日本エム・イー学会大会プログラム・論文集, May 2004
  • ナノバイブレーションによる細胞機能制御システムの開発               
    石丸正臣; 増澤徹; 草間淳; 柴田隆行; 岸田晶夫; 木村剛; 宮崎幸造
    ナノバイブレーションによる細胞機能制御システムの開発、, May 2004
  • 実用化にむけた磁気浮上型人工心臓の開発               
    小沼弘幸; 増澤徹; 大島郁也; 近藤良; 岡田養二
    第2回SVBL成果報告会, Mar. 2004
  • 磁気浮上型人工心臓               
    増澤徹
    電気学会技術報告第958号, Mar. 2004
  • 軸流ポンプ用小型磁気浮上システムの開発               
    齋藤喬; 小沼弘幸; 岡田養二; 増澤徹
    SVBL第2回成果報告会, 28 Feb. 2004
  • 生体組織の粘弾性評価に関する研究‐幼児と成人の筋肉の粘弾性評価-               
    中村太一; 小川真由美; 増澤徹
    人と福祉を支える技術フォーラム, Feb. 2004
  • アキシャル型磁気浮上人工心臓の高機能化に関する研究               
    大沢卓也; 村上倫子; 小沼弘幸; 増澤徹
    人と福祉を支える技術フォーラム, Feb. 2004
  • ラジアル型磁気浮上人工心臓の改良に関する研究               
    野津英孝; 小沼弘幸; 増澤徹; 岡田養二; 築谷朋典; 妙中義之
    人と福祉を支える技術フォーラム, Feb. 2004
  • ナノバイブレーションによる細胞機能制御システムの開発               
    草間淳; 石丸正臣; 増澤徹; 木村孝之; 岸田晶夫; 木村剛; 宮崎幸造
    人と福祉を支える技術フォーラム, Feb. 2004
  • アキシャル型磁気浮上モータを用いた人工心臓の開発               
    小沼弘幸; 増澤徹
    第16回バイオエンジニアリング講演会講演論文集, Jan. 2004, [Invited]
  • 次世代型磁気浮上定常流ポンプの開発現況               
    増澤徹; 岡田養二
    第10回日本定上流ポンプ研究会, Oct. 2003
  • アキシャル方向支持型磁気浮上モータを使用した遠心血液ポンプの開発               
    小沼弘幸; 加藤勇; 増澤徹
    第41回日本人工臓器学会大会予稿集, Oct. 2003
  • 5軸制御磁気遠心血液ポンプの開発               
    村上倫子; 小沼弘幸; 増澤徹; 岡田養二
    第41回日本人工臓器学会大会予稿集, Sep. 2003
  • 人工心臓における材料表面粗さと血球破壊に関する研究               
    沼田雄亮; 大島郁也; 中村俊一; 増澤徹; 丸山修; 山根隆志; 西田正浩
    茨城講演会講演論文集, Sep. 2003
  • アキシャル型磁気浮上モータを用いた人工心臓用遠心ポンプの開発               
    小沼弘幸; 増澤徹; 村上倫子; 岡田養二
    茨城講演会講演論文集, Sep. 2003
  • 微小振動による細胞機能刺激に関する研究               
    石丸正臣; 増澤徹; 柴田隆行; 岸田晶夫; 宮崎幸造
    茨城講演会講演論文集, Sep. 2003
  • 液晶アクティブマスクを用いたDNAチップ合成システムの開発               
    能田高行; 柴田隆行; 林照剛; 増澤徹; 牧野英司
    茨城講演会講演論文集, Sep. 2003
  • 軸流ポンプ用磁気浮上システムの開発               
    児嶋次郎; 増澤徹; 小沼弘幸; 岡田養二; 山根隆志
    生活支援工学系学会連合大会講演予稿集, May 2003
  • アキシャル型磁気浮上人工心臓の改良               
    村上倫子; 増澤徹; 加藤勇; 小沼弘幸; 岡田養二
    生活支援工学系学会連合大会講演予稿集, May 2003
  • 改良型マイクロカプセル模擬血液を使用した遠心血液ポンプの溶血特性               
    丸山修; 山根隆志; 山口勝弘; 西田正浩; 小野口富夫; 軸屋智昭; 筒井達夫; 増澤徹
    生活支援工学系学会連合大会講演予稿集, May 2003
  • 遠心血液ポンプの設計指標の確立-血液せん断負荷装置内のDNS解析-               
    小沼弘幸; 増澤徹; 田中伸厚; 中村省一郎; 山根隆志
    生活支援工学系学会連合大会講演予稿集, May 2003
  • SPH法を用いた血流のミクロ・モデル解析               
    高野龍雄; 岩田賢; 田中伸厚; 増澤徹
    生活支援工学系学会連合大会講演予稿集, May 2003
  • 差分法と個別要素法を用いた血流の数値               
    岩田賢; 高野龍雄; 田中伸厚; 増澤徹
    生活支援工学系学会連合大会講演予稿集, May 2003
  • セルカルチャーのための圧電駆動型バイオマイクロデバイスの開発               
    棚村大作; 柴田隆行; 草刈紀行; 増澤徹; 岸田晶夫
    生活支援工学系学会連合大会講演予稿集, May 2003
  • 人工心臓用アキシャル型磁気浮上遠心ポンプの改良               
    村上倫子; 増澤徹; 小沼弘幸; 児嶋次郎; 岡田養二
    電気学会研究会資料, May 2003
  • Design of a self-bearing slice motor for a centrifugal blood pump               
    Satoshi Ueno; Chen Chen; Tetsuo Ohishi; Ken-ichi Matsuda; Yohji Okada; Yoshiyuki Taenaka; Toru Masuzawa
    the Sixth international symposium on magnetic bearings, 05 Aug. 1998

Affiliated academic society

  • Jan. 2017 - Present, International Society for Mechanical Circulatory Support
  • Nov. 2007 - Present, The Japan Society of Applied Electromagnetics and Mechanics
  • Jun. 2014 - May 2020, International Federation for Artificial Organs
  • Apr. 2014 - Mar. 2020, 日本学術会議
  • Dec. 2016, International Society for Rotary Blood Pump
  • Sep. 2013, Asia-Pacific Society for Artificial Organs
  • 2008, The Japan Society of Applied Electromagnetics and Mechanics
  • 日本人工臓器学会
  • ライフサポート学会
  • 精密工学会
  • 日本機械学会
  • 米国人工臓器学会
  • 日本生体医工学会
  • 日本生活支援工学会
  • 電気学会
  • 計測自動制御学会

Research Themes

Industrial Property Rights

  • 特許第5963134号, 特願2012-172943, アキシャル型磁気浮上モータ
    増澤徹,長真啓
  • 特願2015-167656, 磁気浮上姿勢制御装置
    増澤徹, 國府田芳彰
  • 5636857, 特願2010-229738, 生体組織接着用柔軟性金属箔テープ及びその接着方法
    尾関和秀,増澤徹,岸田晶夫,加藤綾子
  • 特許第5590520号, 特願2009-132239, アキシャル型磁気浮上モータおよびアキシャル型磁気浮上モータを備えたアキシャル型磁気浮上遠心ポンプ
    増澤徹
  • 特願2014-159157, 陰圧発生防止機構及びその陰圧発生防止機構を備えた容積ポンプ
    増澤徹,黒崎亘
  • 5543435, 2011-510193, 生体組織と人工物の接着装置,ステント
    増澤徹,尾関和秀,岸田晶夫,加藤綾子
  • 第5509436号, 特願2009-8336, 遠心型の補助人工心臓を用いた体内発電装置
    山家智之,白石泰之,福長一義,磯山隆,増澤徹,岡本英治
  • 5465249, PCT出願, 磁気浮上制御装置およびハイブリッド型磁気軸受け
    増澤徹,佐々木瑛祐
  • 5462530, PCT/JP2010/059375, 発熱装置及び生体組織接着装置
    岸田晶夫,増澤徹,樋上哲哉
  • 豪国特許第2010272054号, Magnetic levitation control device and hybrid type magnetic bearing
    増澤徹, 佐々木瑛祐
  • 5408707, 特願2009-113579, ポンプ装置
    増澤徹,佐々木瑛祐
  • PCT/JP2013/063880, 組織自己接合型体内挿入管及び該体内挿入管との接合方法
    増澤徹,青代敏行
  • 特願2012-111902, 組織自己接合型体内挿入管及び該体内挿入管との接合方法
    増澤徹,青代敏行
  • 5028607, 特願2006-055619, 生体組織接着装置
    岸田晶夫 増澤徹 樋上哲哉
  • 特願2011-246111, ローレンツモータ
    増澤徹,一ノ瀬高紀,ウルリッヒ・スタインセイファー
  • 4786297, 特願2005-188588, ハイブリッド型磁気軸受
    増澤徹
  • 4666335, 特願2002-259269, 機械的振動による生物機能の制御方法とその装置
    岸田晶夫 小薗勉 宮崎幸造 増澤徹
  • PCT出願 PCT/JP2007/053969, 生体組織と人工物の接着物の接着方法及びその接着装置
  • PCT/AU2010/000428, Heart pump controller
    Masuzawa Toru, Eisuke Sasaki, Daniel Timms
  • 特願2009-167937, ハイブリッド型磁気軸受け
    増澤徹,佐々木瑛祐
  • 特願2009-102468, 生体組織と人工物の接着物の接着方法及びその接着装置
    増澤徹,尾関和秀,岸田晶夫,加藤綾子
  • 特願2008-333647, 人工心筋装置
    山家智之,白石泰之,福井康裕,阿部祐輔,増澤徹,岡本英治
  • 特許第4153468号, 特願2004-190147, 磁気浮上型モータ及びターボポンプ
    増澤徹
  • 特許第4106484号, 特願2002-14882, 動圧軸受け付き磁気浮上ポンプ
    山根隆志 岡田養二 増澤徹 小西義昭
  • 特許第3930834号, 特願2003-184874, アキシャル型磁気浮上回転機器及び遠心ポンプ
    増澤徹 岡田養二
  • 特願2006-055620, 生体組織接着性医療器具
    岸田晶夫,樋上哲哉,増澤徹
  • 特願2006-223106, 永久磁石を用いたハイブリット型磁気軸受
    岡田養二 増澤徹 中山直久
  • 特許第3808811号, 特願2002-228126, アキシャル磁気浮上回転モータおよびこれを用いた回転機器
    増澤徹 岡田養二
  • 特許公開2007-04425, 褥瘡予防エアマット及びそのエアマットに用いられるロータリーバルブ又は車椅子
    宮入睦彦,増澤徹
  • 特願2004-011456, 位置・傾斜計測装置
    木村孝之 増澤徹
  • 特願2003-417956, ベッドおよびベッドに使用される床ずれ防止装置
    増澤徹 吉澤卓 永井文秀 平田敬一
  • 特開2001-252351, 特願2000-65057, 血液ポンプ
    増澤徹 岡田養二
  • 特開2001-252351, 特願2000-65057, 遠心ポンプ
    増澤徹 岡田養二
  • 特許番号第2588753号, 特開平1-308941, 特願昭63-139433, 粘度計測装置
  • 特許番号第2520047号, 特開平4-161139, 特願平2-285768, 患者監視システム
    福井康裕 河村剛史 坂牧孝規 伊藤孝 熊谷伸吾 増澤徹 安田一
  • 特開平7-136247, 特願平5-286359, 血液用遠心ポンプ
    高野久輝 妙中義之 荒木賢二 近成賢一 増澤徹
  • PCT/JP2010/002828, 生体組織と人工物の接着装置,ステント
    増澤徹,尾関和秀,岸田晶夫,加藤綾子

Social Contribution Activities

  • 〔Major achievements〕NPO医工連携推進機構 理事長              
    organizing_member
    01 Jun. 2024 - Present
  • 〔Major achievements〕NPOオーファンデバイス研究開発 理事長              
    organizing_member
    22 Feb. 2023 - Present
  • 〔Major achievements〕NPO医工連携推進機構 理事              
    organizing_member
    01 Apr. 2007 - 31 Mar. 2025
  • 〔Major achievements〕日本学術会議 連携会員              
    others
    日本学術会議, 01 Apr. 2014 - 31 Mar. 2024
  • 〔Major achievements〕令和3年度国立研究開発法人日本医療研究開発機構委託事業,令和3年度 医療機器等における先進的研究開発・開発体制強靱化事業(医療機器等に関する開発ガイドライン(手引き)策定事業),経皮的エネルギー伝送システム 開発WG座長              
    presenter
    令和3年度国立研究開発法人日本医療研究開発機構委託事業, 01 Apr. 2021 - 31 Mar. 2022
  • 令和2年度国立研究開発法人日本医療研究開発機構委託事業,令和2年度 医療機器等における先進的研究開発・開発体制強靱化事業(医療機器等に関する開発ガイドライン(手引き)策定事業),経皮的エネルギー伝送システム 開発WG座長              
    presenter
    令和2年度国立研究開発法人日本医療研究開発機構委託事業, 01 Apr. 2020 - 31 Mar. 2021
  • 〔Major achievements〕「次世代型補助循環システムの評価方法」ワーキンググループ              
    advisor
    国立循環器病研究センター, 01 Apr. 2014 - 31 Mar. 2018
  • 〔Major achievements〕専門調査員              
    investigator
    文部科学省科学技術・学術政策研究所科学技術動向研究センター, 02 May 2012 - 31 Mar. 2013