Cardiac defibrillator including an electronic energy transfer ci

Details Cardiac defibrillator including an electronic energy transfer ci Cardiac defibrillator including an electronic energy transfer ci

1991-11-08

1993-06-29

Kamm, William E.

Surgery

Truss

Pad

A61N 139

Patent

active

052224929

ABSTRACT:
An energy transfer circuit (40) for delivering a cardiac defibrillation pulse to a patient (50). An energy storage capacitor (16) is coupled to a pair of electrodes (52a, 52b) through an electronic switch (42). The electronic switch is controlled by a control circuit (20). A current shunt 56 is connected in parallel with a pair of defibrillation electrodes (52a, 52b) to divert a leakage current that flows through the electronic switch away from the patient when a defibrillation pulse is not being delivered. A current sensor (64) or a voltage sensor (72) provide a feedback signal to the control circuit to regulate the energy of the defibrillation pulse that flows through the patient.

REFERENCES:
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patent: 4823796 (1989-04-01), Benson
patent: 4825871 (1989-05-01), Cansell
patent: 4926862 (1990-05-01), Miyajima et al.

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