Active discharge of a coupling capacitor in an implantable medic

Details Active discharge of a coupling capacitor in an implantable medic Active discharge of a coupling capacitor in an implantable medic

1994-09-12

1996-01-23

Kamm, William E.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

A61N 137

Patent

active

054862019

ABSTRACT:
An active discharge circuit for use within an implantable medical device, such as a pacemaker, rapidly discharges a coupling capacitor connected between a therapy circuit and body tissue. The active discharge circuit has a switching device, a charge transfer capacitor, and a clock. The clock is coupled to a control input of the switching device and provides a clock signal thereto. In response to the clock signal, the switching device sequentially and repeatedly couples the charge transfer capacitor to a discharge voltage supply so that charge transfers therebetween, and then couples the charge transfer capacitor to the coupling capacitor so that charge transfers therebetween. As the switch oscillates in response to the clock signal, the coupling capacitor is actively discharged.

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patent: 4858610 (1989-08-01), Callaghan et al.
patent: 4991583 (1991-02-01), Silvian

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