Apparatus for tachycardia investigation or control

Details Apparatus for tachycardia investigation or control Apparatus for tachycardia investigation or control

1979-08-21

1981-12-29

Kamm, William E.

Surgery

Truss

Pad

A61N 136

Patent

active

043077250

ABSTRACT:
An apparatus for the investigation and/or control of tachycardia comprising an implantable pacemaker having a short (typically 180 ms or lower) refractory period and providing in use, output pulses in response to external stimuli applied to the skin of the patient, and an external stimulus generator comprising means for generating the external stimuli. In the control of tachycardia, the implanted unit provides output pulses in response to natural heart beats. These output pulses are detected by the external stimulus generator through electrodes thereon held in contact with the skin. The external generator determines the pulse rate of the detected pulses and, if above a preset level, generates the external stimuli of an appropriate characteristic in time and number to cause the implanted unit to issue output pulses to arrest the tachycardia. The apparatus may also be used to induce a tachycardia, enabling non-invasive electrophysiological studies to be made.

REFERENCES:
patent: 3433228 (1969-03-01), Keller, Jr.
patent: 3662759 (1972-05-01), Dabolt
patent: 3683934 (1972-05-01), Bukowiecki et al.
patent: 3881493 (1975-05-01), Cannon
patent: 4088140 (1978-05-01), Rockland et al.

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