Cardiac pacemaker with capture verification

Details Cardiac pacemaker with capture verification Cardiac pacemaker with capture verification

1988-12-02

1992-11-10

Kamm, William E.

Surgery

Truss

Pad

A61N 1362

Patent

active

051615290

ABSTRACT:
A pacemaker having an electrical stimulation source of known type is provided with a sense amplifier having a switched capacitor circuit which allows switching of the amplifier's bandpass frequency characteristic thereby selectively varying the cardiac signal frequencies subject to sensing. The heart's electrical activity is detected in a first predetermined low frequency range after to delivery of a stimuli to detect evoked electrical activity and a second predetermined high frequency range to detect intrinsic electrical activity. The magnitude of stimuli is varied response to the detected presence or absence of evoked electrical activity.

REFERENCES:
patent: 4261369 (1981-04-01), Allor
patent: 4381786 (1983-05-01), Duggan
patent: 4436093 (1984-03-01), Belt
patent: 4555668 (1985-11-01), Gregorian et al.
patent: 5024221 (1991-06-01), Morgan

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