Cardiac assist device
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United States of America Patent
Stats
-
Mar 11, 1980
Grant Date -
N/A
app pub date -
Sep 5, 1978
filing date -
Sep 5, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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