A Study on Active Catheter System (1st Report, Structure, Experimental Results and Characteristic Evaluation of Multiunits Using SMA Active Catheter with Multi D. O. F.)

Toshio Fukuda, Shu Xiang Guo, Fumihito Arai, Kazuhiro Kosuge, Makoto Negoro

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

In this paper, we propose a new protoype model of the active microcatheter of which its bending has two degrees of freedom. The design and fabrication methods of this active microcatheter are described. It is 4Fr, 5Fr, 6Fr (1Fr = 0.333 mm) in diameter and consists of 3 active units with SMA wires in its lumina as the servo actuator. The bending motion, bending directions and bending angle of the active catheter have been measured by application of electricity in air and in physiological saline solution. We also modeled this active microcatheter. Experimental results show that the model of the active catheter is reasonable for practical applications. By using simulators (conditions similar to those of a body cavity), we also carried out simulation experiments in vitro and in vivo. The experimental results indicate that the proposed active catheter is applicable to intracavity operations.

Original languageEnglish
Pages (from-to)1727-1734
Number of pages8
Journaltransactions of the japan society of mechanical engineers series c
Volume60
Issue number573
DOIs
Publication statusPublished - 1994 Jan 1
Externally publishedYes

Keywords

  • Actuator
  • Bending Angle
  • Bending Direction
  • Catheter
  • Experiments in Vitro
  • Micro Machine
  • Minimum Invasive Surgery
  • Robot
  • Shape Memory Alloy (SMA)

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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