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Development of a structural-color type sensor to detect lesion hardness and grasping state for flexible endoscope operation

Research Project

Project/Area Number 19K20722
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 90130:Medical systems-related
Research InstitutionKagawa National College of Technology

Principal Investigator

Maeda Yusaku  香川高等専門学校, 機械工学科, 講師 (00803404)

Project Period (FY) 2019-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords触覚センサ / 構造色 / 低侵襲治療 / 軟性内視鏡 / センサ / 硬さ / 3軸荷重 / NOTES / 硬さセンサ / 触角センサ
Outline of Research at the Start

軟性内視鏡を用いた超低侵襲治療において,医師が視覚情報しか得られず,発見した「病変の正確な診断」や,鉗子の扱いなどの「治療技術の習熟」が困難であるという課題が存在している。申請者はこれまで,取得する情報に応じて変化するセンサの構造色を内視鏡カメラで取得する,“構造色式センサ”を提案し,送気圧計測によりその基本動作を実証している。本研究では,“構造色式センサ”を触覚取得へ拡張し,硬さや把持状態が検出可能なセンサ要素を開発・鉗子へ実装し,必要に応じて硬さや把持状態の計測を,同時に可能とするシステムを実現することを目指す。

Outline of Final Research Achievements

In this study, we developed the tactile sensor based on structural color change depending on the information. The response of the developed sensor element to triaxial load was obtained, and the load resolution of 1 mN and the measurement range of 25 mN for vertical load were confirmed. We also obtained the response for A5 and A45 samples, which correspond to the actual hardness of biological tissue. From these evaluation results, we succeeded in realizing the capability to measure the vertical load and the frictional force in the range of up to 5N grasping force assumed in medical forceps.

Academic Significance and Societal Importance of the Research Achievements

構造色式センサと,内視鏡カメラの組み合わせによる計測は単一の内視鏡視野から送気圧や温度,鉗子の把持状態や接触箇所の硬さなどの複数の情報を,医師の必要に応じて,同時に取得可能であり,構造的には,現行の内視鏡構成に対してセンサチップの追加のみで実現できる。このことは,センサの無線化に対する一般的なアプローチである,無線素子や電池を使用する場合に比べ,実装体積を小さくできることから,軟性内視鏡治療への応用において,多様な計測への拡張性の高い技術である。

Report

(3 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • Research Products

    (9 results)

All 2020 2019

All Presentation (9 results) (of which Int'l Joint Research: 5 results)

  • [Presentation] Structural color based tactile sensor for flexible endoxcopic surgery to detect grab state and organs hardness2020

    • Author(s)
      Yusaku Maeda, Kyohei Terao, Fusao Shimokawa, and Hidekuni Takao
    • Organizer
      IEEE MEMS 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Implementation and Evaluation of Highly Sensitive Silicon Slip Sensing Imager on Laparoscopic forceps2020

    • Author(s)
      Kanako Ando, Takafumi Yamamoto, Yusaku Maeda, Kyouhei Terao, Fusao Shimokawa, Masao Fujiwara and Hidekuni Takao
    • Organizer
      CME2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Fully wireless and multimodal sensing on flexible endoscopic surgery using structural color-based microsensor2020

    • Author(s)
      Yusaku Maeda, Hirohito Mori, Kyohei Terao, Fusao Shimokawa and Hidekuni Takao
    • Organizer
      CME2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 低摩擦状態下での内視鏡治療に向けた鉗子実装型MEMS滑り覚センサ2020

    • Author(s)
      安東伽奈子,山本崇史,前田祐作,藤原理朗,高尾英邦
    • Organizer
      第12回集積化MEMSシンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] STRUCTURAL COLOR BASED TACTILE SENSOR FOR FLEXIBLE ENDOSCOPIC SURGERY TO DETECT GRAB STATE AND ORGANS HARDNESS2020

    • Author(s)
      Yusaku Maeda, Kyohei Terao, Fusao Shimokawa, and Hidekuni Takao
    • Organizer
      MEMS2020
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 軟性内視鏡手術に向けた構造色による送気圧計測システムの開発2019

    • Author(s)
      前田祐作, 森宏仁, 高尾英邦
    • Organizer
      香川大学先端工学研究発表会
    • Related Report
      2019 Research-status Report
  • [Presentation] NOTESにおける送気圧モニタリングに向けたMEMSセンサの開発2019

    • Author(s)
      前田祐作, 森宏仁, 高尾英邦
    • Organizer
      生体医工学シンポジウム2019
    • Related Report
      2019 Research-status Report
  • [Presentation] Evaluation of temperature characteristic on fully wireless optical sensor for real time monitoring of air pressure and temperature in flexible endoscopic surgery2019

    • Author(s)
      Hiroto Yoshida, Yusaku Maeda, Hirohito Mori, and Hidekuni Takao
    • Organizer
      the 3rd NIT-NUU International Conference
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 内視鏡手術における把持状態の無線計測に向けた構造色変化を用いた力覚センサの開発2019

    • Author(s)
      前田祐作, 寺尾京平, 下川房男, 高尾英邦
    • Organizer
      第11回集積化memsシンポジウム
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2022-01-27  

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