Dual channel cardiac pacer isolation circuit

Details Dual channel cardiac pacer isolation circuit Dual channel cardiac pacer isolation circuit

1984-10-04

1986-05-06

Kamm, William E.

Surgery

Truss

Pad

A61N 136

Patent

active

045865078

ABSTRACT:
A system is provided for preventing cross-stimulation between the atrium and ventricle during cardiac pacing using a dual chamber cardiac pacer. A first output capacitor is connected in series with the atrium lead and a second output capacitor is connected in series with the ventricle lead. The first output capacitor is isolated from being charged until an atrial stimulus pulse is issued and the second output capacitor is isolated from being charged until a ventricle stimulus pulse is issued. The isolation means comprises analog switches that are controlled by a pacer logic circuit so that a current flow line is provided to the first output capacitor only when a stimulus pulse is issued to the atrium and a current flow line is provided to the second output capacitor only when a stimulus pulse is issued to the ventricle.

REFERENCES:
patent: 3669120 (1972-06-01), Nielsen
patent: 3815109 (1974-06-01), Carraway et al.
patent: 3903897 (1975-09-01), Woollons et al.
patent: 4114627 (1978-09-01), Lewyn et al.
patent: 4300566 (1981-11-01), Stindt et al.
patent: 4402322 (1983-09-01), Duggan
patent: 4462406 (1984-07-01), DeCote, Jr.
patent: 4462407 (1984-07-01), Herscovici et al.
patent: 4470418 (1984-09-01), Herscovici et al.

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