Artifact cancellation to suppress far-field activation during electrophysiology mapping
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United States of America Patent
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Sep 13, 2016
Grant Date -
Jul 3, 2014
app pub date -
Dec 20, 2013
filing date -
Dec 27, 2012
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Abstract
A method for mapping a cardiac chamber includes sensing activation signals of intrinsic physiological activity with a plurality of electrodes disposed in or near the cardiac chamber, the activation signals including a near-field activation signal component and a far-field activation signal component, isolating R-wave events in the activation signals, generating a far-field activation template representative of the far-field activation signal component based on the R-wave events, and filtering the far-field activation template from the activation signals to identify the near-field activation signal components in the activation signals.
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