Cardiac assist device

Details Cardiac assist device Cardiac assist device

1978-09-05

1980-03-11

Little, Willis

Surgery

Truss

Perineal

128 64, A61H 2900

Patent

active

041922930

ABSTRACT:
A cardiac assist device which operates by cyclically exerting pressure through an implanted inflatable sheath, which surrounds the myocardium. The sheath is rigid and encloses a bladder or plurality of bladders into which a fluid, either in the form of an inert gas or a liquid is pulsed, with a time displacement curve similar or identical to the contraction-distension characteristics exhibited normally by the myocardium during a cardiac cycle. Pulsing is triggered by the EKG R-spike of the patient which operates a valve. In order to provide adequate fluid volume for the required pressure through the valve, an elastic fluid reservoir is provided.

REFERENCES:
patent: 3455298 (1969-07-01), Anstadt
patent: 3587567 (1971-06-01), Schiff
patent: 3590815 (1971-07-01), Schiff
patent: 3613672 (1971-10-01), Schiff

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