経尿道的結石破砕術のための形状記憶合金（SMA）ワイヤーを用いた屈曲機構

カテゴリ: 論文誌(論文単位)

グループ名: 【E】センサ・マイクロマシン部門

発行日: 2018/02/01

タイトル(英語): Bending Mechanism using SMA Wires for Transurethral Lithotripsy

著者名: 太刀岡　俊樹（東北大学大学院医工学研究科），松永　忠雄（東北大学大学院医工学研究科），棚橋　善克（棚橋よしかつ＋泌尿器科），小林　拓生（東北大学大学院工学研究科），芳賀　洋一（東北大学大学院医工学研究科／東北大学大学院工学研究科）

著者名(英語): Toshiki Tachioka (Graduate School of Biomedical Engineering, Tohoku University), Tadao Matsunaga (Graduate School of Biomedical Engineering, Tohoku University), Yoshikatsu Tanahashi (The Urology Office of Tana-hashi), Takumi Kobayashi (Graduate School of

キーワード: 経尿道的結石破砕術，形状記憶合金ワイヤー，屈曲機構　　transurethral lithotripsy，shape memory alloy，bending mechanism

要約(英語): In the transurethral lithotripsy using flexible endoscope (f-TUL), a flexible ureteroscope is inserted into the bladder from the urethra and breaks calculus by laser transmitted through an optical fiber. Because laser irradiation position is fixed in the endoscopic field of view, it is difficult to perform precise alignment of laser to the target when the target has relatively complex structure. To solve the problem, a thin multidirectional active bending mechanism of the laser fiber using Shape Memory Alloy (SMA) wire has been developed. This device has 170 μm diameter channel for laser fiber and is controlled by 3 SMA wires. Maximum outer diameter is 1.1 mm and length of the bending part is 10 mm. The fabricated bending mechanism with laser fiber bends up to 10 degrees. Surface temperature was measured by using a thermocouple in water bath and was lower than 41℃.

本誌: 電気学会論文誌E（センサ・マイクロマシン部門誌） Vol.138 No.2 （2018）

本誌掲載ページ: 41-47 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejsmas/138/2/138_41/_article/-char/ja/