Implantable stimulator with terminal voltage control of a deplet

Details Implantable stimulator with terminal voltage control of a deplet Implantable stimulator with terminal voltage control of a deplet

1997-06-04

1999-03-02

Kamm, William E.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

A61N 137

Patent

active

058764232

ABSTRACT:
An implantable stimulator includes a depletable voltage source for supplying electrical energy. The voltage source has a terminal voltage which varies as a function of depletion of the voltage source. An output stage receives electrical energy from the voltage source and includes an arrangement for generating a stimulation voltage that is increased with respect to the terminal voltage of the voltage source and a stimulation energy storage device for storing the stimulation voltage. A control device receives operational energy from the voltage source and is operatively connected for controlling a stimulation operation of the stimulation energy storage device. A pump control device receives operational energy from the voltage source and is operatively connected to the output stage for controlling at least one of a time interval and a current strength of the electrical energy supplied to the output stage so that a minimum operating voltage required for a safe operation of the control devices is maintained as the terminal voltage of the voltage source.

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patent: 4548209 (1985-10-01), Wielders et al.
patent: 5387228 (1995-02-01), Shelton
Greatbatch: "A New Pacemaking System Utilizing a Long-life Lithium Cell". : Digest of the 9.sup.th international conference on medical and biological Engineering, 1991, Melbourne, p. 27.

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