Hydraulically actuated total cardiac prosthesis with reversible pump and three-way ventricular valving
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United States of America Patent
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May 3, 1983
Grant Date -
N/A
app pub date -
Sep 15, 1981
filing date -
Sep 15, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A total cardiac prosthesis having a pair of hydraulically actuated compressible blood pumps. An actuation chamber adjacent each blood pump receives hydraulic actuation fluid from a separate actuator pump to compress the blood pump during systole and eject blood therefrom. During diastole the actuation fluid is permitted to drain from the actuation chamber into a reservoir. One of the actuator pumps delivers actuation fluid to its associated actuation chamber through a three-way ventricular dump valve, which directs fluid directly to the reservoir during diastole. The other actuator pump is a reversible pump which repeatedly reverses its pumping direction to effect systole and diastole in its associated blood pump.
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