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Development of a wide viewing trocar for thoracoscopic surgery

Research Project

Project/Area Number 17K10797
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Respiratory surgery
Research InstitutionNagoya City University

Principal Investigator

Nakanishi Ryoichi  名古屋市立大学, 医薬学総合研究院(医学), 教授 (00207838)

Co-Investigator(Kenkyū-buntansha) 國本 桂史  名古屋市立大学, 医薬学総合研究院(医学), 教授 (90448720)
森山 悟  名古屋市立大学, 大学院医学研究科, 研究員 (50551264)
川野 理  名古屋市立大学, 大学院医学研究科, 研究員 (80423854)
横田 圭右  名古屋市立大学, 医薬学総合研究院(医学), 講師 (30569257)
渡邊 拓弥  名古屋市立大学, 医薬学総合研究院(医学), 研究員 (60803153)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2017: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Keywords内視鏡手術 / 医療安全 / 術中合併症 / 外科 / 臨床
Outline of Final Research Achievements

We have developed a wide viewing trocar with reduced blind spots, which is a major cause of intraoperative complications. Initially, we planned to make a trocar using 6 small Charge Coupled Device (CCD) image sensors, but we made a trocar using 4 Complementary Metal-Oxide Semiconductor (CMOS) image sensors, which are cheaper than CCD sensors, due to lack of budget. Thereafter, we evaluated the function and operability of the trocar in a human cadaver model, and assessed whether 4 CMOS images could be actually drawn in a picture-in-picture format in an endoscopic image. Although we could obtain a visual field from 3 CMOS images without problem in terms of medical safety, we could not assess another CMOS image. The CMOS code in the endoscope insertion part became a problem to be improved in the future.

Academic Significance and Societal Importance of the Research Achievements

内視鏡手術の安全性を支えるデバイスの開発は未だ充分とは言えない。死角をほとんどなくした広範囲視認型トロッカーを開発することにより、体腔内における内視鏡手術の安全性は極めて向上すると考えられる。今回の研究の結果、4本中3本のCMOSイメージセンサーの画像から、医療安全上問題のない広範囲な視野が得られた。今後改善すべき問題も明らかになり、臨床応用への道が開かれたものと考えられる。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2021-02-19  

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