INTER-ELECTRODE IMPEDANCE FOR DETECTING TISSUE DISTANCE, ORIENTATION, CONTACT AND CONTACT QUALITY
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United States of America Patent
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May 26, 2016
app pub date -
Nov 19, 2015
filing date -
Nov 19, 2014
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Abstract
A method of determining the distance between an electrode catheter disposed in a body fluid adjacent an internal body surface, and the internal body surface, the method comprising: applying an alternating voltage or an alternating current that alternates at between about 10 kHZ and about 100 kHz between at least one pair of electrodes on the electrode catheter; determining the impedance between at least one pair of electrodes on the electrode catheter; and determining the distance between the electrode catheter and the internal body surface based at least in part on the determined impedance.
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