Active bending electric endoscope using shape memory alloy wires

T. Kobayashi, T. Matsunaga, Y. Haga

研究成果: Chapter

5 被引用数 (Scopus)

抄録

The bending mechanism of a conventional endoscope operates by drawing wires from outside the human body. The shaft structure of endoscopes is relatively complex to avoid buckling by the tensile force of the wire. Therefore, it is difficult to make a conventional endoscope. In this study, an active bending electric endoscope was developed using SMA (shape memory alloy) wires. The SMA wires are driven by Joule heat generated by electric current. As a result, the shaft structure of the active bending mechanism is simplified compared to the conventional endoscope. The active bending mechanism using SMA wires simplifies inspection inside the human body. This device consists of a commercial CMOS imager, three LEDs and a shaft structure. It is capable of multidirectional bending with a curvature radius of approximately 40 mm at 300 mA. The active bending mechanism using SMA wires would be suitable for construction of a disposable endoscope.

本文言語English
ホスト出版物のタイトルMechanisms and Machine Science
出版社Kluwer Academic Publishers
ページ131-139
ページ数9
DOI
出版ステータスPublished - 2016 1 1

出版物シリーズ

名前Mechanisms and Machine Science
38
ISSN(印刷版)2211-0984
ISSN(電子版)2211-0992

ASJC Scopus subject areas

  • 材料力学
  • 機械工学

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