Prosthetic closure devices to replace the valves in human hearts
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United States of America Patent
Stats
-
Apr 28, 1981
Grant Date -
N/A
app pub date -
Mar 19, 1979
filing date -
Apr 12, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A prosthetic closure device to replace a human heart valve, in particular the mitral or tricuspid valve, comprises an annular valve body, around the periphery of which a suture ring is provided for attaching the valve body to the heart tissue, and a valve member located in the valve body. The valve member is in the form of a spherical segment having a diameter of 1.058 D.sub.ri and comprising part of the surface of a hollow sphere having a diameter of 2D.sub.ri, where D.sub.ri is the smallest inner diameter of the valve body. The valve member is hinged to the valve body by means of a flap formed integrally with the valve member and which projects through a slot in the valve body, where it is secured by the suture ring, to form a hinge. The inner surface of the valve body narrows conically in the direction of inflow and subsequently widens to provide an annular seating for the valve member.
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