Polymer heart valve with helical coaption surface
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United States of America Patent
Stats
-
Sep 24, 2002
Grant Date -
Jun 27, 2002
app pub date -
Dec 21, 2000
filing date -
Dec 21, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A polymer heart valve has a leaflet with a base geometry of a cylinder for simplicity and effective opening. A helical swept surface is added to the top of the cylinder to enhance stable coaption. The heart valve includes a plurality of flexible leaflets. Each leaflet includes a top portion and a bottom portion. The bottom portion is an axial section of a cylinder having an axis and a radius. A first section of the top portion is a surface defined by a first arc having a first radius swept along a first helix. The first arc is tangent to the axial section of the cylinder. A second section of the top portion is a surface defined by a second arc having a second radius swept along a second helix. The second arc is tangent to the axial section of the cylinder. The second helix is a left-handed helix having the same radius and axis as the cylinder.
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Family
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