Heart valve prosthesis with improved bi-leaflet pivot design
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United States of America Patent
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-
Sep 15, 1992
Grant Date -
N/A
app pub date -
Oct 25, 1989
filing date -
Oct 25, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A bi-leaflet heart valve having an annular body and a pair of leaflets. The leaflets pivot around improved ears, whose motion is constrained by generally triangular recesses. The triangular recesses have a pivotal vertex in proximity to a centerline of the annular base and on the upstream side of the heart valve. Opposite the pivotal vertex is a slightly convex base. The opening angle of the leaflets can be adjusted by varying the inclination of a wall of the triangular recess adjacent the center line. The opening angle should be adjusted, according to the teachings of the present invention, to minimize energy loss for a particular inside diameter of the heart valve. The optimum opening angle can be determined by in vitro testing using an adjustable valve and a pulse duplicator.
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Family
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Cited Art Landscape
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