Implantable blood pump

Details Implantable blood pump Implantable blood pump

1990-07-10

1992-04-28

Hafer, Robert A.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Corporeal artificial heart, heart assist , control...

417472, 417545, A61M 112

Patent

active

051084260

ABSTRACT:
An implantable blood pump comprises a flow passage (13) and two valves (15, 16), located spaced apart in the longitudinal direction of said passage (13) and permitting a flow of blood therethrough only in one direction and defining a pump chamber (14) therebetween, having an elastically deformable peripheral wall (17). The valve located at the inlet end of the pump chamber (14) being supported by a holder (19), arranged for reciprocating movement in the longitudinal direction of the pump chamber (14) by means of periodically operating driving means (24, 25). In order to reduce the risk of thrombosis within the pump chamber (14), said wall is formed by an elastically extensible hose (17), surrounded by a bellows (27), defining a liquid-filled annular space (29) around said hose (17) and being sealingly connected thereto at opposite ends thereof.

REFERENCES:
patent: 3106204 (1963-10-01), Paramelle
patent: 3127846 (1964-04-01), Kerns
patent: 3974825 (1976-08-01), Normann
patent: 4131604 (1978-12-01), Szycher
patent: 4750868 (1988-06-01), Lunback
patent: 4781716 (1988-11-01), Richelsoph
patent: 4925377 (1990-05-01), Inacio et al.

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