Back-flow limiting valve member
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United States of America Patent
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N/A
Issued Date -
Jul 31, 2003
app pub date -
Dec 13, 2002
filing date -
Dec 19, 2001
priority date (Note) -
Published
status (Latency Note)
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Abstract
A back flow limiting valve member which substantially, but not entirely, blocks reverse blood flow through a blood pump, such as when the blood pump is not pumping blood or pumping below a predetermined rate. The valve member can operate passively or actively in order to provide a limited back-flow through the blood pump to prevent clot formation. The back flow check valve may also be employed to restrict reverse blood flow through a blood flow conduit or blood vessel rather than in a blood pump.
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