Artificial heart

Details Artificial heart Artificial heart

1988-07-07

1989-12-19

Apley, Richard J.

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

Corporeal artificial heart, heart assist , control...

600 16, A61F 222

Patent

active

048880116

ABSTRACT:
An artificial heart system employing left and right pumping chambers each divided by a membrane into a blood pumping chamber and a hydraulic pumping chamber and a hydraulic pumping system for alternately pumping hydraulic fluid from said left hydraulic chamber toward said right hydraulic chamber and vice versa. A balancing chamber including a flexible membrane placed in the left atrium so that the membrane changes position with changes in the patient's blood pressure, the hydraulic portion of said balancing chamber being fluidically coupled to the right hydraulic pumping chamber in order to allow for a different pumping volume between the left blood pumping chamber and the right blood pumping chamber. A control system employing an algorithm to control the speed of the hydraulic pumping and the direction of flow of the hydraulic pumping in response to sensors sensing the left atrial pressure and the completeness of stroke of the left blood pumping chamber.

REFERENCES:
patent: 3434162 (1969-03-01), Wolfe
patent: 4555222 (1985-11-01), Casilli
patent: 4687424 (1987-08-01), Heimes
patent: 4820300 (1989-04-01), Pierce

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