US 12,350,073 B2
Signal and correction processing for anatomical structure mapping data
Avram Dan Montag, Haifa (IL); and Meir Bar-Tal, Haifa (IL)
Assigned to Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed by BIOSENSE WEBSTER (ISRAEL) LTD., Yokneam (IL)
Filed on Dec. 9, 2020, as Appl. No. 17/116,854.
Prior Publication US 2022/0175323 A1, Jun. 9, 2022
Int. Cl. A61B 5/00 (2006.01); A61B 5/287 (2021.01); A61B 5/346 (2021.01); G16H 50/20 (2018.01); G16H 50/50 (2018.01)
CPC A61B 5/7264 (2013.01) [A61B 5/287 (2021.01); A61B 5/346 (2021.01); A61B 5/6852 (2013.01); A61B 5/6885 (2013.01); G16H 50/20 (2018.01); G16H 50/50 (2018.01); A61B 2562/0257 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for detecting cardiac scar tissue using a catheter having a plurality of electrodes, the method comprising:
receiving electrical signals comprising biometric data of at least a portion of a heart from the catheter having the plurality of electrodes, wherein the electrical signals are received while the catheter is positioned within the heart during a medical procedure;
determining that a tissue proximity indicator feature associated with the portion of the heart is active based on an output of an impedance-based algorithm that detects contact of the catheter to tissue in accordance with real-time changes in impedance of the plurality of electrodes;
assigning a scar parameter to the portion of the heart based on a voltage of the electrical signals and a distance to a nearest scar measurement among a plurality of scar measurements;
detecting that the portion of the heart corresponds to the cardiac scar tissue when both the tissue proximity indicator feature is active and the scar parameter is indicative of scar tissue, and
performing an operation using the catheter in accordance with the portion of the heart detected as corresponding to the cardiac scar tissue g, wherein the operation comprises at least one of an automatic tagging operation, a time weighted local activation time assignment operation, or a discrimination operation.