Development of active bending electric endoscope using shape memory alloy for disposable and thin endoscope

Wataru Makishi, Masaharu Ikeda, Masayoshi Esashi, Tadao Matsunaga, Yoichi Haga

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Bending motions of the tip of a conventional endoscope are controlled from outside the body by wire traction. A shaft of an endoscope should be relatively hard to avoid buckling by wire traction. The active bending mechanism of an endoscope, which is realized using shape memory alloy (SMA) coil actuators instead of wire traction, is soft. Using micro-fabrication technology on non-planar substrate, cylindrical substrate of thin endoscope was fabricated. These endoscopes enable precise observations and treatments of deep areas of the human body.

Original languageEnglish
Pages (from-to)102-110+1
JournalIEEJ Transactions on Sensors and Micromachines
Volume131
Issue number3
DOIs
Publication statusPublished - 2011 Sep 9

Keywords

  • Active bending mechanism
  • Electric endoscope
  • Micro-fabrication Technology on Non-planar Substrate
  • Optical imager
  • SMA actuator

ASJC Scopus subject areas

  • Mechanical Engineering
  • Electrical and Electronic Engineering

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