US 12,350,057 B2
Analyzing multi-electrode catheter signals to determine electrophysiological (EP) wave propagation vector
Assaf Govari, Haifa (IL); Vadim Gliner, Haifa (IL); and Yair Palti, Haifa (IL)
Assigned to Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed by Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed on Jul. 31, 2023, as Appl. No. 18/362,158.
Application 18/362,158 is a continuation of application No. 16/918,972, filed on Jul. 1, 2020, granted, now 11,730,413.
Prior Publication US 2024/0023869 A1, Jan. 25, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/341 (2021.01); A61B 5/00 (2006.01); A61B 5/287 (2021.01); A61B 5/339 (2021.01); A61B 5/343 (2021.01)
CPC A61B 5/341 (2021.01) [A61B 5/287 (2021.01); A61B 5/339 (2021.01); A61B 5/343 (2021.01); A61B 5/6858 (2013.01); A61B 5/6859 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
receiving: (i) multiple electrophysiological (EP) signals acquired by multiple electrodes of a multi-electrode catheter that are configured to be in contact with tissue in a region of a cardiac chamber, and (ii) respective tissue locations at which the electrodes acquired the EP signals;
calculating an average local activation time (LAT) for a plurality of selected tissue sections from the EP signals acquired by the multi-electrode catheter;
determining a first section of the plurality of selected tissue sections having a smallest average LAT value, and a second section of the plurality of selected tissue sections having a highest average LAT value;
determining a first representative location in the first section, and a second representative location in the second section;
calculating between the first and second representative locations a propagation vector indicative of propagation of an EP wave that has generated the EP signals;
outputting the propagation vector to a display in a graphical form;
determining that a re-entering EP wave was detected; and
calculating an additional propagation vector for the re-entering EP wave.