Artificial urethral valve driven by SMA actuators with transcutaneous energy transmission system

Mami Tanaka, Kazuhiro Abe, Feng Wang, Haruo Nakagawa, Yoichi Arai, Yoshikatsu Tanahashi, Seiji Chonan

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


This paper presents the development of a mechanical SMA urethral valve driven by a portable transcutaneous energy transmission system, which is powered by batteries. Structure of the valve was improved by introducing a bite mechanism in order to prevent the pinch of urethra by the valve. The cycling characteristics and energy transmission efficiency were examined by laboratory tests. Experimental results show that the stable operation can be obtained by introducing a voltage regulating circuit to the energy transmission system and utilizing the sinusoidal oscillation in the energy transmission system can enhance the transmission efficiency. Furthermore, the function of the valve system was tested by the vitro and vivo animal experiments.

Original languageEnglish
Pages (from-to)23-30
Number of pages8
JournalInternational Journal of Applied Electromagnetics and Mechanics
Issue number1-3
Publication statusPublished - 2003
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering


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