Patent ID: 8649851

Claim:
A method for measuring current of injury (COI) during lead fixation, the method comprising: sensing cardiac signals from a lead within a chamber of a heart while the lead is in a pre-fixation position; capturing a baseline waveform from the cardiac signals while the lead is in the pre-fixation position, the baseline waveform representative of an interface between the lead and a tissue region proximate a tip of the lead directly engaging the tissue region of the heart and before the tip of the lead is actively attached to the tissue region of the heart; affixing the lead to the tissue sensing cardiac signals from the lead within the chamber of the heart when the lead is in a post-fixation position; capturing a post-fixation waveform from the cardiac signals when the lead is in the post-fixation position, the post-fixation waveform representative of an interface between the lead and the tissue region proximate the tip of the lead after the lead is actively attached to the tissue region of the heart; and calculating a COI indicator based on an automatic comparison of the baseline and post-fixation waveforms.