US 12,064,252 B2
System and method for cardiac mapping
Mark Hagfors, North Oaks, MN (US); Travis Dahlen, Forest Lake, MN (US); and Daniel R Starks, Lake Elmo, MN (US)
Assigned to St. Jude Medical, Cardiology Division, Inc., St. Paul, MN (US)
Appl. No. 17/604,281
Filed by ST. JUDE MEDICAL, CARDIOLOGY DIVISION, INC., St. Paul, MN (US)
PCT Filed Apr. 3, 2020, PCT No. PCT/US2020/026675
§ 371(c)(1), (2) Date Oct. 15, 2021,
PCT Pub. No. WO2020/214439, PCT Pub. Date Oct. 22, 2020.
Claims priority of provisional application 62/835,937, filed on Apr. 18, 2019.
Prior Publication US 2022/0192577 A1, Jun. 23, 2022
Int. Cl. A61B 5/367 (2021.01); A61B 5/318 (2021.01); A61B 5/343 (2021.01)
CPC A61B 5/367 (2021.01) [A61B 5/318 (2021.01); A61B 5/343 (2021.01)] 17 Claims
OG exemplary drawing
 
1. A method of mapping electrical activation of tissue, comprising:
receiving, at an electroanatomical mapping system, a plurality of electrophysiology data points, each of the plurality of electrophysiology data points including local activation timing information; and
for each of the plurality of electrophysiology data points, the electroanatomical mapping system computing a slow conduction metric from the local activation timing information,
wherein the electroanatomical mapping system computing the slow conduction metric from the local activation timing information comprises the electroanatomical mapping system computing the slow conduction metric using at least one of a weighted variance of the local activation timing information and a weighted standard deviation of the local activation timing information, where weighting is inversely related to distance from the respective electrophysiology data point,
thereby creating a slow conduction map.