Pacemaker with circuit for pulse width modulating stimulus pulse

Details Pacemaker with circuit for pulse width modulating stimulus pulse Pacemaker with circuit for pulse width modulating stimulus pulse

1980-02-04

1982-01-26

Kamm, William E.

Surgery

Truss

Pad

128419PT, A61N 136

Patent

active

043123546

ABSTRACT:
An implantable pacemaker having circuit means for indicating, by pulse width modulation of the delivered pacing pulses, the programmable control states which control the selected pacemaker operating perameters. The circuitry includes a parallel to serial shift register adapted to receive the control states from a pacer circuit and to generate a serial multiple bit word when the pacemaker is switched to a magnetic mode. The shift register is clocked by stimulus timing signals, and the multiple bit word drives a one shot generator, the output of which is combined with the timing pulses to produce pulse width modulated pacing pulses.

REFERENCES:
patent: 3833005 (1974-09-01), Wingrove
patent: 3945387 (1976-03-01), Adams
patent: 4126139 (1978-11-01), Walters et al.
patent: 4187854 (1980-02-01), Hepp et al.
patent: 4192316 (1980-03-01), Walters et al.

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