Sequential-pulse, multiple pathway defibrillation method

Details Sequential-pulse, multiple pathway defibrillation method Sequential-pulse, multiple pathway defibrillation method

1984-06-25

1985-10-22

Kamm, William E.

Surgery

Truss

Pad

128784, A61N 136

Patent

active

045482039

ABSTRACT:
A method of controlling cardiac ventricular fibrillation and other tachyarrhythmias by delivery of two time-separated current pulses to separate pairs of electrodes spatially placed in, around, or on the heart. The technique produces a temporal and spatial summation of the delivered current, which results in a dramatic reduction in the voltage, current, and energy required for defibrillation, or cardioversion, and allows the use of a smaller implantable pulse generator. The new system achieves a more uniform distribution of current within the ventricular myocardium, thereby reducing the risk of tissue damage and increasing the margin of safety between effective shocks and myocardial depressing or damaging shocks.

REFERENCES:
patent: 3211154 (1965-10-01), Becker et al.
patent: 3605754 (1971-09-01), Jarus et al.
patent: 3895639 (1975-07-01), Rodler
patent: 3937226 (1976-02-01), Funke
patent: 4023574 (1977-05-01), Nemec
patent: 4030509 (1977-06-01), Heilman et al.
patent: 4088140 (1978-05-01), Rockland et al.
Rastelli et al, "Journal of Thoracic & Cardiovascular Surgery", vol. 55, No. 1, Jan., 1968, pp. 117-122 (especially FIGS. 2-3).

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