Effect of compliant structure in the accelerated heart valve fatigue tester on the surface pitting of the disk.

DOI 2 Citations 8 References

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Other Title
  • 機械弁の表面壊食に及ぼす加速耐久試験機コンプライアンス構造の影響

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Abstract

There are various reports on the fracture of mechanical heart valves implanted in human or animals, and they are pointed out that problems are induced by an erosion of disk surface, due to a cavitation effect. We have been investigating this mechanism using our original accelerated fatigue tester, and it was found that erosion was enhanced by a compliance effect in the test circuit. In this study, effects of compliance value and location on erosion were discussed, while disk closing velocity was measured by a high speed video camera. It was clarified that faster closing velocity was resulting in a enhancement of erosion on the disk surface.

Journal

  • Jinko Zoki

    Jinko Zoki 27 (1), 168-173, 1998

    JAPANESE SOCIETY FOR ARTIFICIAL ORGANS

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