Surgery – Truss – Pad
Patent
1976-02-12
1977-01-25
Frinks, Ronald L.
Surgery
Truss
Pad
128 1D, 92 31, 74 57, A61F 124, A61M 103
Patent
active
040042995
ABSTRACT:
In accordance with one embodiment of the invention, a total cardiac replacement device or four chambered heart for orthotopic placement is provided. This device is a pulsatile flow, synchronous ventricular ejection pump which closely simulates the action of the human heart. An internal electrical drive motor is powered by radio frequency induction across intact skin without external connections. A grooved rotary shaft driven by the motor powers a linear follower disc in one direction to compress two blood compatible sacs which simulate the left ventricle and right ventricle of the heart by pumping blood through the aorta and pulmonary artery, respectively. Return movement of the follower disc in terms of rate is a function of right atrial and left atrial pressure and volume. Stroke volume of each simulated ventricle is independent of the other, as in the natural heart. In a second embodiment of the invention, a left ventricle cardiac assist device shunts and pumps blood from the left atrium into the aorta while the recipient's natural heart is left intact. The assist device can also be utilized for pulmonary circulation as a right ventricular assist means, shunting and pumping blood from the right atrium into the pulmonary artery.
REFERENCES:
patent: 1921235 (1933-08-01), Lindsey
patent: 2245457 (1941-06-01), Brassell
patent: 3379191 (1968-04-01), Harvey
patent: 3496878 (1970-02-01), Hargest et al.
patent: 3771173 (1973-11-01), Lamb
patent: 3860968 (1975-01-01), Shapiro
Fishburne, Jr. B. P.
Frinks Ronald L.
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