Pacemaker noise rejection system

Details Pacemaker noise rejection system Pacemaker noise rejection system

1986-10-06

1988-10-25

Jaworski, Francis J.

Surgery

Truss

Pad

128696, A61N 100

Patent

active

047796170

ABSTRACT:
A noise rejection circuit for an implantable pacemaker. During re-triggerable relative refractory periods following a heartbeat, the peak noise level is sensed; the relative refractory period is re-started whenever the input signal exceeds the previous peak. Following a time-out of the relative refractory period, the peak value detected, representing the noise level, is added to the programmed threshold value; the sum is used as the threshold value during sensing.

REFERENCES:
patent: 3926197 (1975-12-01), Alley, III
patent: 3939824 (1976-02-01), Arneson et al.
patent: 4263919 (1981-04-01), Levin
patent: 4379459 (1983-04-01), Stein
patent: 4408615 (1983-10-01), Grossman
patent: 4516579 (1985-05-01), Ivnich
patent: 4664116 (1987-05-01), Shaya et al.

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