System for cardiac pacing

Details System for cardiac pacing System for cardiac pacing

1988-07-14

1990-01-23

Jaworski, Francis

Surgery

Truss

Pad

A61N 136

Patent

active

048951528

ABSTRACT:
A system is provided for cardiac pacing, in which the output levels of the electrical stimulus pulses are responsive to the detection or non-detection of cardiac pacer evoked potentials. A pulse generator is provided for emitting electrical stimulus pulses at variable output levels. A pulse to pulse interval and an evoked response sensing period are provided. At the beginning of the pulse to pulse interval, an electrical stimulus having a first output level is emitted. If no evoked response is sensed during the sensing period, then an electrical stimulus at a selected maximum output level is emitted and, thereafter, the next electrical stimulus pulse is emitted at a second output level that is greater than the first output level. If a predetermined number of evoked responses are sensed during the sensing periods following the emission of stimulation pulses at other than the maximum output level, then the output level of the next electrical stimulus is decreased, but not to below a selected minimum output level.

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