Cardiac assist device

Details Cardiac assist device Cardiac assist device

1987-12-21

1989-03-21

Apley, Richard J.

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

Corporeal artificial heart, heart assist , control...

A61F 222

Patent

active

048139521

ABSTRACT:
A muscle-powered pump to assist the natural heart is disclosed. The device comprises an oblate, spheroidal-shaped pumping chamber surrounded by innervated muscular tissue. The device may be coupled to the ventricle and descending aorta with valves and be stimulated in synchrony with the natural depolarization of the heart or the device may be inserted into the descending aorta and used as a counter pulsation device. In this application, the innervated muscle is stimulated after a brief delay from the natural cardiac depolarization.

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"Biophysical Studies on Nerve and Muscle", BioPhysics: Concepts and Mechanisms, New York: Reinhold Pub., Chapter 10, 1962, pp. 262-294 by E. J. Casey.
Biomechanical Cardiac Assist Cardiomyoplasty and Muscle-Powered Devices, Chapters 2, 3, 5, 6, 11 and 12, Edited by Ray C. J. Chiu, M.D., Ph.D., 1986.
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"Synchronously Stimulated Skeletal Muscle Graft for Myocardial Repair", The Journal of Thoracic and Cardiovascular Surgery, vol. 87, No. 3, Mar. 1984, by Dewar, Drinkwater, Wittnich and Chiu, pp. 325-331.
"Muscle Energy for Total Artificial Heart Drive", Thona et al. Artificial Organs, vol. 5 (Suppl), pp. 441-445, 1981.

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