Implantable heart pump

Details Implantable heart pump Implantable heart pump

1983-12-02

1985-10-22

Frinks, Ronald L.

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

Corporeal artificial heart, heart assist , control...

417412, 417413, 417418, A61F 124, A61M 103

Patent

active

045479119

ABSTRACT:
A mechanical heart for implantation into the human body is run at a higher frequency which is a harmonic multiple of a normal heart beat frequency, and the pump chamber volume is reduced, proportionately to the increased pumping frequency. The circuit for controlling the frequency includes a phase locked loop for implementing a predictive algorithm which adjusts the frequency dynamically based on heart muscle nerve ending signals to synchronize the circuit output to the biologically determined heart beat. The reduced displacement permits use of a smaller compliance chamber. A novel interconnection between the motor chambers of a plurality of such pumps eliminates the need for venting and compliance chambers in a totally implanted heart system.

REFERENCES:
patent: 3434162 (1969-03-01), Wolfe
patent: 3568214 (1971-03-01), Goldschmied
patent: 3842440 (1974-10-01), Karlson
patent: 3874002 (1975-04-01), Kurpanek
patent: 4369530 (1983-01-01), Robinson et al.

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