Heart valve with rectangular orifice
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United States of America Patent
Stats
-
Mar 2, 2004
Grant Date -
Oct 31, 2002
app pub date -
Apr 25, 2002
filing date -
Apr 26, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A mechanical heart valve prosthesis has a generally rectangular orifice and two leaflets that move between a closed position nearly perpendicular to blood flow and an open position nearly parallel to blood flow. Due to the uniform dimension of a rectangle, the leaflets are hinged at the periphery of the orifice, and present a single large central flow region to the blood when opened. The base provides several means of constraining the leaflet rotation during opening and closing.
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