Hydraulically actuated cardiac prosthesis

Details Hydraulically actuated cardiac prosthesis Hydraulically actuated cardiac prosthesis

A - Human Necessities

61

M

3/116

A61M 1/10 (2006.01) A61M 1/12 (2006.01)

Patent

CA 1188853

HYDRAULICALLY ACTUATED CARDIAC PROSTHESIS ABSTRACT A cardiac prosthesis having an hydraulically actuated compressible blood pump (RV). An actuation chamber (116) adjacent the blood pump (RV) receives pulses of hydraulic actuation fluid from an actuator pump (120) through a fluid inlet path (126) to compress the blood pump (RV) during systole and eject blood therefrom. Between pulses the actuation fluid is permitted to drain from the actuation chamber (116) through an outlet path (132) into a reservoir (12). Discharge of fluid through the outlet path (132) is controlled by a dump valve (130) which is adapted to close or open the outlet path (132) primarily in response to forces which vary as a function of the flow of actuation fluid through the fluid inlet path (126).

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