Artificial Urethral Valve Using SMA Actuators (Fundamental Principle of Valve and the Verification of Opening/Closing Functions)

Seiji Chonan, Seiichi Orikasa, Zhong Wei Jiang, Takasige Namima, Mami Tanaka, Keiichiro Uchi, Jun Tanikawa, Kentaro Hirano

Research output: Contribution to journalArticle

Abstract

This paper is concerned with the development of an artificial urethral valve for treating urinary incontinence, which is driven by shape memory alloy actuators. Two types of valves, one with hand-drum form and the other with cylindrical configuration, are assembled and their opening and closing functions are examined experimentally by using the urethrae of male dogs. It is found that the cylindrical is better than the hand-drum form from the point of contact pressure with the urethra. A metallographical-mechanical model of the SMA plate is constructed and applied to the analysis of opening/closing functions of the valve. It is shown that the presented model well describes the motor functions of the artificial urethral valve.

Original languageEnglish
Pages (from-to)1229-1236
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
Volume64
Issue number620
DOIs
Publication statusPublished - 1998 Jan 1
Externally publishedYes

Keywords

  • Analytical Model
  • Animal Experiment
  • Artificial Urethral Valve
  • Lower Urinary Tract
  • Shape Memory Alloy
  • Urinary Incontinence

ASJC Scopus subject areas

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

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