Current limiter for an implantable cardiac device

Details Current limiter for an implantable cardiac device Current limiter for an implantable cardiac device

1999-02-16

2000-12-12

Kamm, William E.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

A61N 139

Patent

active

061610402

ABSTRACT:
A defibrillator for applying bipolar or multipolar shock pulses includes an energy source, a sensor circuit for sensory intrinsic cardiac activity, a controller for applying pulses from said energy source and a protection circuit. The protection current monitors the current to the sensory circuit and limits the same to a predetermined level. The current is monitored during different phases of the pulses by appropriate limiter sections. Preferably the limiter sections are active semiconductor device which are energized all the time.

REFERENCES:
patent: 3653387 (1972-04-01), Ceier
patent: 4164215 (1979-08-01), Finlayson et al.
patent: 4637397 (1987-01-01), Jones et al.
patent: 4745923 (1988-05-01), Winstrom
patent: 5433732 (1995-07-01), Hirschberg et al.
patent: 5591218 (1997-01-01), Jacobson

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