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Development of a ventricular assist device for improving survival rate and QOL based on dynamics of a levitating impeller

Research Project

Project/Area Number 20H02098
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 20010:Mechanics and mechatronics-related
Research InstitutionTokyo Institute of Technology

Principal Investigator

HIJIKATA WATARU  東京工業大学, 工学院, 准教授 (30618947)

Co-Investigator(Kenkyū-buntansha) 藤原 立樹  東京医科歯科大学, 医学部附属病院, 助教 (00632291)
大内 克洋  東京医科歯科大学, 大学院医歯学総合研究科, 寄附研究部門准教授 (20322084)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2022: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2021: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Fiscal Year 2020: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Keywords人工心臓 / 磁気浮上 / 強制変位加振 / 推力・磁力ハイブリッド浮上 / 血栓予防 / 血栓検知 / 補助人工心臓 / 磁力・推力ハイブリッド浮上機構 / 磁気軸受 / インペラダイナミクス / 推力浮上
Outline of Research at the Start

人工心臓は心臓病患者の血液循環に使われるが,ポンプ内血栓による死亡や脳梗塞が多い.また,小型人工心臓が実現しておらず,小児は腹部に穴を開けて人工血管を外に引出し,人工心臓を体外に設置して生活している.すなわち,現在の人工心臓は延命デバイスに過ぎない状態である.そこで本研究では,羽根車の血液中ダイナミクスを解明し,浮上インペラの加振制御による血栓予防,および推力を利用したインペラの磁力・推力ハイブリッド浮上機構の創出と小型人工心臓への適用を行い,「小児から高齢者まで,全ての患者の生活の質と生存率を格段に向上させる次世代人工心臓の創出」に挑戦する.

Outline of Final Research Achievements

Ventricular assist devices are used for blood circulation in patients with heart failure. In this study, we developed (1) a magnetic/thrust hybrid levitation mechanism for the impeller that minimizes blood cell damage even when the pump is miniaturized for pediatric use, and (2) a thrombus prevention and detection technology by controlling the vibration of the impeller. Specifically, in (1), we realized a high-stiffness design of the thrust force using the response phase method. In (2), we realized a thrombus detection technology that can distinguish thrombus from changes in blood viscosity by using forced displacement vibration of the impeller in a circular orbit shape with a magnetic bearing. Furthermore, by setting appropriate vibration frequency and amplitude, we have clarified the vibration conditions that can prevent blood from sticking to the impeller surface while reducing the power consumption of the magnetic bearing.

Academic Significance and Societal Importance of the Research Achievements

本研究では従来の副作用を伴う薬剤療法とは異なるアプローチで,機械的に血栓の予防を行う技術を提案している.人工物に対する血栓抑制技術は人工心臓のみならず,様々な医療機器に応用可能な汎用性の高い技術であり,機械・制御工学と生体医工学分野を融合した新たな学術分野となりうる.また,血栓予防や検出を自動で行うことで,あたかも人体の血液凝固メカニズムの中に人工心臓が介在しているような状態を実現し,人工臓器分野で課題の人と機械の融合に挑戦する点が意義深い.本技術実現の暁には,患者の生存率,QOL向上が期待され,社会的にも大きな貢献が期待できる.

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (25 results)

All 2023 2022 2021 2020

All Journal Article (8 results) (of which Peer Reviewed: 8 results) Presentation (16 results) (of which Int'l Joint Research: 2 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Prevention of thrombus formation in blood pump by mechanical circular orbital excitation of impeller in magnetically levitated centrifugal pump2023

    • Author(s)
      Hatakenaka Kohei, Hijikata Wataru, Fujiwara Tatsuki, Ohuchi Katsuhiro, Inoue Yusuke
    • Journal Title

      Artificial Organs

      Volume: 47 Issue: 2 Pages: 425-431

    • DOI

      10.1111/aor.14443

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Innovative experimental animal models for real-time comparison of antithrombogenicity between two oxygenators using dual extracorporeal circulation circuits and indocyanine green fluorescence imaging2023

    • Author(s)
      Sakurai Hironobu, Fujiwara Tatsuki, Ohuchi Katsuhiro, Hijikata Wataru, Inoue Yusuke, Maruyama Osamu, Tahara Tomoki, Yokota Sachie, Tanaka Yui, Takewa Yoshiaki, Mizuno Tomohiro, Arai Hirokuni
    • Journal Title

      Artificial Organs

      Volume: 47 Issue: 1 Pages: 77-87

    • DOI

      10.1111/aor.14380

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Proposition of a passive levitation system utilizing thrust and magnetic force for a ventricular assist device2022

    • Author(s)
      MAGARI Ryota、HIJIKATA Wataru
    • Journal Title

      Journal of Advanced Mechanical Design, Systems, and Manufacturing

      Volume: 16 Issue: 3 Pages: JAMDSM0025-JAMDSM0025

    • DOI

      10.1299/jamdsm.2022jamdsm0025

    • ISSN
      1881-3054
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Novel application of indocyanine green fluorescence imaging for real‐time detection of thrombus in a membrane oxygenator2021

    • Author(s)
      Sakurai Hironobu、Fujiwara Tatsuki、Ohuchi Katsuhiro、Hijikata Wataru、Inoue Yusuke、Seki Haruna、Tahara Tomoki、Yokota Sachie、Ogata Asato、Mizuno Tomohiro、Arai Hirokuni
    • Journal Title

      Artificial Organs

      Volume: 45 Issue: 10 Pages: 1173-1182

    • DOI

      10.1111/aor.13999

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Synchronous Control with Heartbeat in a Magnetically Levitated Centrifugal Blood Pump by Estimating a Pump Flow Rate with a Radial Disturbance Observer–Validation in a Simple Mock Circulation Loop–2021

    • Author(s)
      TANAKA Yui、MURASHIGE Tomotaka、HIJIKATA Wataru
    • Journal Title

      Journal of the Japan Society of Applied Electromagnetics and Mechanics

      Volume: 29 Issue: 1 Pages: 72-77

    • DOI

      10.14243/jsaem.29.72

    • NAID

      130008037296

    • ISSN
      0919-4452, 2187-9257
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Evaluation of real‐time thrombus detection method in a magnetically levitated centrifugal blood pump using a porcine left ventricular assist circulation model2021

    • Author(s)
      Seki Haruna、Fujiwara Tatsuki、Hijikata Wataru、Murashige Tomotaka、Tahara Tomoki、Yokota Sachie、Ogata Asato、Ohuchi Katsuhiro、Mizuno Tomohiro、Arai Hirokuni
    • Journal Title

      Artificial Organs

      Volume: 45 Issue: 7 Pages: 726-735

    • DOI

      10.1111/aor.13915

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Verification of a thrombus induction method at the target point inside the blood pump using a fibrinogen coating for a thrombus detection study2020

    • Author(s)
      Seki Haruna、Fujiwara Tatsuki、Hijikata Wataru、Murashige Tomotaka、Maruyama Takuro、Yokota Sachie、Ogata Asato、Ouchi Katsuhiro、Mizuno Tomohiro、Arai Hirokuni
    • Journal Title

      Artificial Organs

      Volume: 44 Issue: 9 Pages: 968-975

    • DOI

      10.1111/aor.13743

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Detection of thrombosis in a magnetically levitated blood pump by vibrational excitation of the impeller2020

    • Author(s)
      Hijikata Wataru、Maruyama Takuro、Murashige Tomotaka、Sakota Daisuke、Maruyama Osamu
    • Journal Title

      Artificial Organs

      Volume: - Issue: 6 Pages: 594-603

    • DOI

      10.1111/aor.13632

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] 大ギャップかつパッシブ非接触支持を実現する 推力・磁力ハイブリッド浮上機構の開発2022

    • Author(s)
      土方 亘, 鈎 亮太
    • Organizer
      第34回「電磁力関連のダイナミクス」シンポジウム (SEAD34)
    • Related Report
      2022 Annual Research Report
  • [Presentation] 磁気浮上・磁気軸受の医療応用2022

    • Author(s)
      土方 亘, 増澤 徹, 進士 忠彦, 栗田 伸幸, 小沼 弘幸, 長 真啓
    • Organizer
      電気学会産業応用フォーラム「磁気浮上・磁気支持に関するICT応用技術」
    • Related Report
      2022 Annual Research Report
  • [Presentation] 拍動流が人工肺内の血栓形成を抑制する効果についての検証2022

    • Author(s)
      櫻井啓暢, 藤原立樹, 大内克洋, 土方亘, 井上雄介, 丸山修, 水野友裕, 荒井裕国
    • Organizer
      第50回人工心臓と補助循環懇話会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 磁気浮上技術で実現する血栓検出・予防および心拍同期制御機能2022

    • Author(s)
      土方亘, 畠中晃平, 藤原立樹, 大内克洋, 井上雄介
    • Organizer
      第50回人工心臓と補助循環懇話会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 応答曲面法に基づいた人工心臓用推力・磁力パッシブ浮上機構の最適設計2022

    • Author(s)
      鄭兆民, 土方亘
    • Organizer
      精密工学会第29回学生会員卒業研究発表講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Real-time Detection of Thrombus Formation in a Membrane Oxygenator using Indocyanine Green2021

    • Author(s)
      Hironobu Sakurai, Tatsuki Fujiwara, Katsuhiro Ohuch, Wataru Hijikata, Yusuke Inoue, Tomohiro Mizuno, Hirokuni Arai.
    • Organizer
      The 60th Annual Conference of Japanese Society for Medical and Biological Engineering
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Real-time Visualization Of Thrombus Formation In An Extracorporeal Membrane Oxygenator Using Indocyanine Green Fluorescence2021

    • Author(s)
      Hironobu Sakurai, Tatsuki Fujiwara, Katsuhiro Ohuchi, Wataru Hijikata, Yusuke Inoue, Tomohiro Mizuno, Hirokuni Arai.
    • Organizer
      2021 AMERICAN SOCIETY FOR ARTIFICIAL INTERNAL ORGANS (ASAIO)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] インペラの円軌道加振によって血栓を予防するインテリジェント磁気浮上型血液ポンプの開発2021

    • Author(s)
      畠中晃平, 土方亘, 藤原立樹, 大内克洋, 井上雄介
    • Organizer
      第59回 日本人工臓器学会大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 体外循環回路の抗血栓性評価を目的とした急性動物実験モデルの提案2021

    • Author(s)
      櫻井啓暢, 藤原立樹, 大内克洋, 土方亘, 井上雄介, 丸山修, 水野友裕, 荒井裕国.
    • Organizer
      第58回日本人工臓器学会大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] コロナ時代に求められるECMOデバイス内血栓予防・血栓検出技術の開発2021

    • Author(s)
      藤原立樹, 土方亘, 井上雄介, 丸山修, 大内克洋, 水野友裕, 荒井裕国.
    • Organizer
      第58回日本人工臓器学会大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 血液ポンプにおける磁気軸受を用いた生体情報モニタリングと治療への応用2021

    • Author(s)
      土方 亘, 田仲 結衣, 畠中 晃, 平 藤原 立樹, 大内 克洋, 井上 雄介.
    • Organizer
      日本機械学会Dynamics and Design Conference 2021
    • Related Report
      2021 Annual Research Report
  • [Presentation] 磁気浮上システムを用いたインペラの揺動運動による血液ポンプ内血栓の予防2021

    • Author(s)
      畠中晃平, 土方亘, 藤原立樹, 大内克洋, 井上雄介.
    • Organizer
      第33回「電磁力関連のダイナミクス」シンポジウム (SEAD33)
    • Related Report
      2021 Annual Research Report
  • [Presentation] 磁気浮上システムを利用した人工心臓の血栓検出及び血栓予防2020

    • Author(s)
      土方亘, 藤原立樹, 大内克洋.
    • Organizer
      第58回日本人工臓器学会大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 血栓検知および血栓予防機能を有する磁気浮上型インテリジェント人工心臓の開発2020

    • Author(s)
      土方亘, 村重智崇, 畠中晃平, 田仲結衣, 藤原立樹, 関晴永, 櫻井啓暢, 大内克洋, 荒井祐国.
    • Organizer
      日本定常流ポンプ研究会学術集会2020
    • Related Report
      2020 Annual Research Report
  • [Presentation] 磁気浮上インペラの微小加振によって血栓を予防するインテリジェント人工心臓の開発2020

    • Author(s)
      土方亘, 村重智崇.
    • Organizer
      第48回人工心臓と補助循環懇話会学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 遠心ポンプ内の意図した箇所に血栓形成を誘発させるフィブリノゲンコーティング法の開発2020

    • Author(s)
      関晴永, 藤原立樹, 土方亘, 村重智崇, 横田幸恵, 尾形麻斗, 大内克洋, 荒井祐国.
    • Organizer
      第48回人工心臓と補助循環懇話会学術集会
    • Related Report
      2020 Annual Research Report
  • [Patent(Industrial Property Rights)] 磁気浮上型血液ポンプの駆動制御方法、磁気浮上型血液ポンプの駆動制御,装置及び磁気浮上型血液ポンプシステム2022

    • Inventor(s)
      土方亘;畠中晃平など
    • Industrial Property Rights Holder
      土方亘;畠中晃平など
    • Industrial Property Rights Type
      特許
    • Filing Date
      2022
    • Related Report
      2022 Annual Research Report

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Published: 2020-04-28   Modified: 2024-01-30  

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