Prosthetic heart valve with improved blood flow
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United States of America Patent
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Jun 1, 1999
Issued Date -
N/A
app pub date -
Feb 20, 1998
filing date -
May 16, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A prosthetic heart valve is shown which incorporates a valve body design and leaflet pivot arrangements that minimize turbulence and shear stresses having a tendency to generate thrombosis. A valve body having an axially curved entrance that is smoothly joined to a generally cylindrical body of extended axial length provides excellent fluid flow characteristics when combined with leaflets that can assume orientations perfectly aligned with the downstream flow of blood. By constructing such a pyrocarbon valve body which receives a metal ring at an appropriate location, suture rings that permit the tissue annulus to directly contact the exterior surface of the cylindrical valve body are accommodated.
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Family
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