Electronic capture detection for a pacer
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United States of America Patent
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-
Nov 30, 1993
Grant Date -
N/A
app pub date -
Dec 12, 1990
filing date -
Dec 12, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pacemaker sense amplifier which includes active circuitry which establishes and attempts to maintain a constant field density between two electrodes, effectively clamping them together at substantially fixed relative electrical potentials. The amount of current or power provided to the electrodes monitored and forms the basis of detection of the passing cardiac depolarization wavefront. A timer is sued to define a detection window after the generation of a pacing pulse. The occurrence of a detected depolarization within the detection window is indicates that the pacing pulse has captured the heart.
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