Pacing lead impedance monitoring circuit and method
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United States of America Patent
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Apr 27, 1999
Grant Date -
N/A
app pub date -
Nov 7, 1997
filing date -
Nov 7, 1997
priority date (Note) -
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Abstract
A circuit for determining lead impedance during the time a pacing or other stimulating electrical pulse is being delivered measures current and voltage simultaneously to check for open circuits or short circuits based on different thresholds. The detection of a bad lead can force a double pulse to be delivered in real time in a unipolar configuration. Switching from unipolar to bipolar configuration based on detecting a bad bipolar circuit can be supported.
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