Three-dimensional induction of thin catheter in blood vessel using multiple beams of ultrasound

• Project/Area Number: 15K12116
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Intelligent robotics
• Research Institution: Tokyo University of Agriculture and Technology
• Principal Investigator: Masuda Kohji 東京農工大学, 工学(系)研究科(研究院), 准教授 (60283420)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 極細カテーテル / 音響放射力 / 2次元アレイトランスデューサ / 超音波音場 / 2次元アレイ / 音場分布 / 音響エネルギー / カテーテル

Outline of Final Research Achievements

Since the acoustic energy is dispersed with the multiple focal points, it was difficult to obtain sufficient displacement. Using two ultrasound array transducers (128 elements), which realizes not only the spatial design but also the dynamic variation of acoustic field, we realized the bending of a thin catheter by forming multiple focal points. We realized to bend the thin catheter with about 0.3 mm by introducing tempo-spatial division emission of single focal point.

Research Products

• [Journal Article] 時空間分割超音波送信による音波伝搬の直交方向への極細カテーテルの屈曲制御 (2018)
  • Author(s): 鈴木俊哉、牛水英貴、保坂直斗、望月剛、桝田晃司
  • Journal Title: 生体医工学 Volume: 印刷中
  • NAID: 130007397251
  • Peer Reviewed / Open Access
• [Journal Article] Bending of thin catheter by tempo-spatial division of ultrasound emission and evaluation of viscosity effect (2018)
  • Author(s): Hidetaka Ushimizu, Toshiya Suzuki, Takashi Mochizuki, and Kohji Masuda
  • Journal Title: Japanese Journal of Applied Physics Volume: 印刷中
  • Peer Reviewed / Open Access
• [Journal Article] Thin catheter bending to the perpendicular direction to ultrasound propagation using 2- dimensional array transducer (2017)
  • Author(s): Toshiya Suzuki, Takashi Mochizuki, Hidetaka Ushimizu, Shinya Miyazawa, Nobuhiro Tsurui, and Kohji Masuda
  • Journal Title: Japanese Journal of Applied Physics Volume: 56
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] 超音波放射力を用いた極細カテーテル誘導の可能性 (2015)
  • Author(s): 望月剛、鶴井信宏、小野木真哉、桝田晃司
  • Journal Title: 超音波テクノ Volume: 26 Pages: 36-40
  • Acknowledgement Compliant
• [Presentation] 音響放射力分布の時空間変化を利用した極細カテーテルの屈曲条件とその検討 (2017)
  • Author(s): 鈴木俊哉、牛水英貴、保坂直斗、望月剛、桝田晃司
  • Organizer: 第26回日本コンピュータ外科学会大会
• [Presentation] 時分割超音波送信による音波伝搬の直交方向への極細カテーテルの屈曲制御 (2017)
  • Author(s): 鈴木俊哉、牛水英貴、保坂直斗、望月剛、桝田晃司
  • Organizer: 生体医工学シンポジウム2017
• [Presentation] Study of bending thin catheter by tempo-spatial division emission and effect of viscosity (2017)
  • Author(s): Hidetaka Ushimizu, Toshiya Suzuki, Takashi Mochizuki, and Kohji Masuda
  • Organizer: 37th Symposium on Ultrasonic Electronics
  • Int'l Joint Research
• [Presentation] Thin catheter bending to the perpendicular direction of ultrasound propagation using 2-dimensional array transducer (2016)
  • Author(s): Toshiya Suzuki, Takashi Mochizuki, Hidetaka Ushimizu, Shinya Miyazawa, Nobuhiro Tsurui, and Kohji Masuda
  • Organizer: 37th Symposium on Ultrasonic Electronics
  • Place of Presentation: 釜山、大韓民国
  • Year and Date: 2016-11-15
  • Int'l Joint Research
• [Presentation] 逆位相2焦点音場による極細カテーテルの実践的な誘導方法の開発 (2016)
  • Author(s): 鈴木俊哉、鶴井信宏、望月剛、桝田晃司
  • Organizer: 第55回日本生体医工学会大会
  • Place of Presentation: 富山国際会議場（富山市）
  • Year and Date: 2016-04-25
• [Presentation] New discovery of thin catheter movement under acoustical field of focused transducer, (2015)
  • Author(s): Takashi Mochizuki, Naoto Hosaka, Nobuhiro Tsurui, and Kohji Masuda
  • Organizer: IEEE Ultrasonic Symposium
  • Place of Presentation: Taipei, Taiwan
  • Year and Date: 2015-10-20
  • Int'l Joint Research
• [Presentation] Features of acoustic radiation function on thin catheter as a tube (2015)
  • Author(s): Takashi Mochizuki, Nobuhiro Tsurui, and Kohji Masuda
  • Organizer: IEEE Ultrasonic Symposium
  • Place of Presentation: Taipei, Taiwan
  • Year and Date: 2015-10-20
  • Int'l Joint Research