Artificial SMA valve for treatment of urinary incontinence: Upgrading of valve and introduction of transcutaneous transformer

M. Tanaka, K. Hirano, H. Goto, T. Namima, K. Uchi, Z. W. Jiang, H. Matsuki, Y. Tanahashi, S. Orikasa, S. Chonan

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

This paper is concerned with the development of an artificial urethral valve driven by shape memory alloy actuators, which is attached onto the urethra of a urinary incontinence sufferer for treating the involuntary micturition. Three types of compact cylindrical valves are assembled and their opening and closing functions are examined experimentally. The updated valve is heated and opened by using the transcutaneous energy transformer consisting of a pair of flexible spiral-formed copper wire coils. The experiment using the canine urinary canal verifies that the total system of the valve and the transformer works well as an artificial sphictor muscle and controls the urinary flow through the canal appropriately.

Original languageEnglish
Pages (from-to)97-112
Number of pages16
JournalBio-medical materials and engineering
Volume9
Issue number2
Publication statusPublished - 1999

Keywords

  • Animal experiment
  • Artificial urethral valve
  • Shape memory alloy
  • Transcutaneous transformer
  • Urinary incontinence

ASJC Scopus subject areas

  • Biomaterials
  • Biomedical Engineering

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