Method and apparatus for utilizing short tau capacitors in an im

Details Method and apparatus for utilizing short tau capacitors in an im Method and apparatus for utilizing short tau capacitors in an im

1993-12-13

1995-02-21

Kamm, William E.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

A61N 136

Patent

active

053911865

ABSTRACT:
An implantable cardioverter defibrillator for treating cardiac dysrhythmias utilizing an interrupted discharge output provided by a switch control means to vary the duty cycle of a switch incorporated within the output circuitry of the implanted cardioverter defibrillator so as to increase the efficiency by extending the duration of the discharge for capacitor systems having time constants, tau, less than about the chronaxie value of the human heart. As a result, the implantable cardioverter defibrillator produces a more favorable rectangular-like waveform from the discharge of a significantly smaller capacitor than the capacitors used in existing implantable cardioverter defibrillators.

REFERENCES:
patent: 4768512 (1988-09-01), Imran

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