Method for cardiac defibrillation

Details Method for cardiac defibrillation Method for cardiac defibrillation

1989-04-26

1990-08-21

Cohen, Lee S.

Surgery

Truss

Pad

128419PG, A61N 139

Patent

active

049497197

ABSTRACT:
A method for cardiac defibrillation is described, for use with an implanted defibrillator. A patient's R-waves are sensed to detect the R-R intervals. If an arrhythmia is detected, the charging of a capacitor is commenced. Determination are made whether the arrhythmia is still in progress and whether the capacitor is charged a predetermined amount. If the arrhythmia is not still in progress, the charging is discontinued. If the arrhythmia is still in progress and the capacitors are charged a predetermined amount, another R-R interval is detected and if the R-R interval is shorter than a selected amount, a shock is delivered to the heart.

REFERENCES:
patent: 3805795 (1974-04-01), Denniston et al.
patent: 4384585 (1983-05-01), Zipes
patent: 4473078 (1984-09-01), Angel
patent: 4572191 (1986-02-01), Mirowski et al.
patent: 4592367 (1986-06-01), Imran
patent: 4614192 (1986-09-01), Imran et al.
patent: 4619265 (1986-10-01), Morgan et al.

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