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

Claim 0:
1. A system for electrophysiological measurement, comprising:
a probe having a distal end configured for insertion into a body cavity of a living subject and 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; and
a processor configured to acquire signals from the electrodes over a period of time during which the probe moves within the body cavity, to compute, in response to 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 to output 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 the processor is configured to distinguish 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 to find 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.