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Design and fabrication of endovascular implant controlled by external magnetic field

Research Project

Project/Area Number 17K18874
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Research Field Electrical and electronic engineering and related fields
Research InstitutionYokohama National University

Principal Investigator

TAKEMURA Yasushi  横浜国立大学, 大学院工学研究院, 教授 (30251763)

Co-Investigator(Kenkyū-buntansha) 山田 努  横浜国立大学, 大学院工学研究院, 助手 (70251767)
Project Period (FY) 2017-06-30 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2018: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2017: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywords磁場制御 / 体内インプラント / 低侵襲治療
Outline of Final Research Achievements

Solidification of cholesterol and lipid inside of the artery causes constriction of blood vessels, resulting in arteriosclerosis. This study aims to realize a small implant within 1 mm diameter for shaving cholesterol and lipid inside as invasive treatment. The implant is designed as to control its position and motion by an externally applied magnetic field. The condition of the applied magnetic field and the excitation coil array were studied.
Wireless power transmission is significant in order to functionalize the implant. The high efficient wireless power transmission was achieved by using a magnetic wire which exhibited a fast magnetization reversal.

Academic Significance and Societal Importance of the Research Achievements

動脈の内側に固化したコレステロールなどの脂質を掘削する治療法として、表面にダイアモンド粒子を付着させたロータブレーダ(直径1.25~2.5 mm)をカテーテルで導入する方法が認可されている。これを1 mm径の小型インプラントで置き換え、ワイヤレスで体外から制御することは低侵襲治療を実現する観点から極めて意義が大きい。また血管内に導入したインプラントやマイクロロボットを活用する治療についてはアイデアはあったが、電源をどうするかという具体的な提案に乏しかった。本研究では特殊な磁性線を用いる新しいアイデアで実現可能な技術を見いだしたことは学術的にも意義がある。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • Research Products

    (12 results)

All 2019 2018 Other

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (9 results) (of which Int'l Joint Research: 8 results,  Invited: 1 results) Remarks (2 results)

  • [Journal Article] Dynamic Hysteresis Measurement of Magnetic Nanoparticles with Aligned Easy Axes2018

    • Author(s)
      Katsuki Takahashi, Akitoshi Takebuchi, Tsutomu Yamada, and Yasushi Takemura
    • Journal Title

      Journal of the Magnetics Society of Japan

      Volume: 42 Issue: 2 Pages: 55-61

    • DOI

      10.3379/msjmag.1803R009

    • NAID

      130006407901

    • ISSN
      1882-2924, 1882-2932
    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Wiegandワイヤコイルを用いた体内ロボットへの給電手法に関する考察2019

    • Author(s)
      和口修平、高橋克希、竹村泰司、河村篤男
    • Organizer
      電気学会全国大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Vibration-type energy harvester for wide frequency range using a Wiegand wire2019

    • Author(s)
      Hiroki Hoshiyama, Tsutomu Yamada, Yasushi Takemura
    • Organizer
      Joint MMM-Intermag Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Wireless power transmission for implantable medical devices using a Wiegand pulse in magnetic wires2019

    • Author(s)
      Katsuki Takahashi, Tsutomu Yamada, Yasushi Takemura
    • Organizer
      Joint MMM-Intermag Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Enhanced output power from energy-harvesting device using a Wiegand wire with flux guidance2019

    • Author(s)
      Takafumi Sakai, Tsutomu Yamada, Yasushi Takemura
    • Organizer
      Joint MMM-Intermag Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Efficient wireless power transmission to medical implant using Wiegand sensor2018

    • Author(s)
      Katsuki Takahashi, Tsutomu Yamada, and Yasushi Takemura
    • Organizer
      IEEE International Magnetics Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Frequency dependence of wireless power transmission using Wiegand wire for implantable medical devices2018

    • Author(s)
      Katsuki Takahashi, Tsutomu Yamada, Yasushi Takemura
    • Organizer
      The Third International Workshop on Magnetic Bio-Sensing
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Wireless power transmission to medically implantable device using magnetic wire2018

    • Author(s)
      Yasushi Takemura
    • Organizer
      10th International Conference & Exhibition on Biosensors & Bioelectronics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evaluation of magnetic field generated from body-size excitation coil for hyperthermia and implantable medical devices2018

    • Author(s)
      Tomohiro Aoto, Tsutomu Yamada, Yasushi Takemura
    • Organizer
      The Biomedical Engineering Society Annual Meeting
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Recent developments on Wiegand wire and its device applications2018

    • Author(s)
      Yasushi Takemura
    • Organizer
      Progress In Electromagnetics Research Symposium
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Remarks] 横浜国立大学・研究者総覧(竹村泰司)

    • URL

      https://er-web.ynu.ac.jp/html/TAKEMURA_Yasushi/ja.html

    • Related Report
      2018 Annual Research Report
  • [Remarks] 横浜国立大学・竹村研究室

    • URL

      http://www.takemura.ynu.ac.jp

    • Related Report
      2018 Annual Research Report

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Published: 2017-07-21   Modified: 2020-03-30  

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