Hydraulically actuated cardiac prosthesis and method of actuatio

Details Hydraulically actuated cardiac prosthesis and method of actuatio Hydraulically actuated cardiac prosthesis and method of actuatio

1981-05-19

1983-01-25

Frinks, Ronald L.

Surgery

Truss

Pad

128 1D, 417388, 417394, 417395, A61F 124, A61M 103

Patent

active

043695302

ABSTRACT:
A cardiac prosthesis having a hydraulically actuated compressible blood pump. An actuation chamber adjacent the blood pump receives pulses of hydraulic actuation fluid from an actuator pump through a fluid inlet path to compress the blood pump during systole and eject blood therefrom. Between pulses the actuation fluid is permitted to drain from the actuation chamber through an outlet path into a reservoir. Discharge of fluid through the outlet path is controlled by a dump valve which is adapted to close or open the outlet path primarily in response to forces which vary as a function of the flow of actuation fluid through the fluid inlet path.

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