Silicone Tri-leaflet Valve and Silicone Blood Chamber made en bloc for Ventricular Assit Device.

DOI 13 References
  • HIRAI S
    The First Departement of Surgery, Hiroshima University School of Medicine
  • FUKUNAGA S
    The First Departement of Surgery, Hiroshima University School of Medicine
  • MITSUI N
    The First Departement of Surgery, Hiroshima University School of Medicine
  • SUESHIRO M
    The First Departement of Surgery, Hiroshima University School of Medicine
  • OKADA K
    The First Departement of Surgery, Hiroshima University School of Medicine
  • TAHARA K
    The First Departement of Surgery, Hiroshima University School of Medicine
  • WATARI M
    The First Departement of Surgery, Hiroshima University School of Medicine
  • MORITA S
    The First Departement of Surgery, Hiroshima University School of Medicine
  • ORIHASI K
    The First Departement of Surgery, Hiroshima University School of Medicine
  • SUEDA T
    The First Departement of Surgery, Hiroshima University School of Medicine
  • MATSUURA Y
    The First Departement of Surgery, Hiroshima University School of Medicine

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Other Title
  • シリコン製サック一体型三葉弁の試作と補助人工心臓への応用

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Description

A blood chamber with a silicone lenticular sac and two silicone tri-leaflet valves made en bloc was manufactured using die caster for a ventricular assist device (VAD) that would be less expensive. Regurgitation of the silicone valve was measured 205ml/min, and that of Björk-Shiley monostrut valve was measured 321ml/min. Pressure gradient across the silicone valve was slightly greater than that across the monostrut valves. By this VAD, the maximam output flow of 6.3L/min was achieved at the rate of 80bpm in a Donovan type mock circulatory system, which was selected the preload of 12mmHg, the afterload of 120mmHg, the driving pressure of 160mmHg, the driving vacuum of 20mmHg and the percent systole 35%. The VAD worked well for 54 days in an overflow type mock circulatory system at the afterload of 100mmHg.

Journal

  • Jinko Zoki

    Jinko Zoki 26 (3), 645-649, 1997

    JAPANESE SOCIETY FOR ARTIFICIAL ORGANS

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