Patent ID: 11911096
Assignee: BIOSENSE WEBSTER (ISRAEL) LTD.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 6:
7. A method for detecting contact and proximity between ablation electrodes by sensing changes in voltage morphology of non-activated electrodes, the method comprising:
applying one or more bipolar ablation pulses between a first electrode and a second electrode of a catheter that are contacting tissue within a body, for ablating the tissue in contact with the first and second electrodes, wherein the catheter additionally includes a third electrode on which the pulse generator does not apply an ablation pulse;
monitor voltage between the third electrode and a reference during application of the one or more ablation pulses, wherein the third electrode is a non-active electrode;
comparing the voltage to a reference voltage stored in memory, and
issuing a notification during application of the one or more ablation pulses in response to detecting that the voltage violates a predefined criterion based on the comparing.