Left atrial to descending thoracic aorta left ventricular assist

Details Left atrial to descending thoracic aorta left ventricular assist Left atrial to descending thoracic aorta left ventricular assist

1977-10-27

1979-03-13

Frinks, Ronald L.

Surgery

Truss

Pad

128 1D, 92 31, 74 57, 417412, A61F 124, A61M 103

Patent

active

041434250

ABSTRACT:
An implanted tether-free externally powered motor with suitable reduction gearing drives a spirally grooved shaft having a ring housing for a shaft follower pin. A rectangular cross section chamber receives an ejection plate pivoted near one end to a first leg of the ring housing and having a resilient lost motion connection with a second leg of the ring housing near its other end. A compressible sac or pouch extends through said chamber and is fitted at its opposite ends with porcine valves and has conduit extensions outwardly of said valves for connection with the left atrium and the descending thoracic aorta, respectively. During use, the sac or pouch is cyclically compressed by the ejection plate, initially at the end of the ejection plate having the lost motion yielding connection with the follower ring housing, and subsequently at both ends of the ejection plate so that a predetermined volume of blood is delivered on each stroke of the ejection plate to the thoracic aorta.

REFERENCES:
patent: 1921235 (1933-08-01), Lindsey
patent: 2245457 (1941-06-01), Brassell
patent: 2361821 (1944-10-01), Crowe et al.
patent: 2917751 (1959-12-01), Fry et al.
patent: 3518033 (1970-06-01), Anderson
patent: 3791769 (1974-02-01), Kovacs
patent: 3860968 (1975-01-01), Shapiro
patent: 3911898 (1975-10-01), Leachman, Jr.

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