Patent ID: 11918383
Assignee: BIOSENSE WEBSTER (ISRAEL) LTD.
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 8:
9. A method for electrophysiological measurement, comprising:
inserting into a body cavity of a living subject a probe having a distal end comprising an array of electrodes that are disposed along the distal end and are configured to contact tissue at multiple locations within the body cavity;
acquiring signals from the electrodes within the body cavity over a period of time during which the probe moves within the body cavity;
computing, in response the signals, metrics that are indicative of a respective quality of contact between each of the electrodes and the tissue over the period of time, each respective quality of contact being a quantitative indicator of a degree of stable electrical contact between each of the electrodes and the tissue; and
outputting an indication of the metrics to a user of the system,
wherein the metrics are indicative of a respective duration during which each of the electrodes was in contact with the tissue in the body cavity over the period of time,
wherein the signals are indicative of an electrophysiological activity within the tissue, and wherein computing the metrics comprises distinguishing between local signals acquired by the electrodes that are in contact with the tissue and far-field signals acquired by the electrodes that are not in contact with the tissue, and finding the duration during which each of the electrodes is in contact with the tissue in response a relation between the local and far-field signals acquired by each of the electrodes over the period of time.