Blood pump for pulsating operation
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United States of America Patent
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-
Nov 23, 1993
Grant Date -
N/A
app pub date -
Sep 9, 1992
filing date -
Sep 10, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A blood pump housing (43) accommodates at least one piston (21a,21b) driven by a coupling point (19a,19b) on a triangular closed hypocycloidal path (Z.sub.a, Z.sub.b). The piston (21a,21b) is provided for periodically pressing and releasing a blood chamber (37a,37b). One of the corners of the triangular closed hypocycloidal path (Z.sub.a,Z.sub.b) is directed towards the piston (21a,21b), so that the piston movements substantially consist of three periods, i.e. an advance stroke period, a return stroke period and a stationary stroke period.
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