US 12,324,920 B2
Implantable medical device with pacing capture classification
Jian Cao, Shoreview, MN (US); Elizabeth A. Mattson, Eagan, MN (US); Todd J. Sheldon, North Oaks, MN (US); Xiaohong Zhou, Woodbury, MN (US); and Wade M. Demmer, Coon Rapids, MN (US)
Assigned to Medtronic, Inc., Minneapolis, MN (US)
Filed by Medtronic, Inc., Minneapolis, MN (US)
Filed on Aug. 12, 2021, as Appl. No. 17/401,185.
Claims priority of provisional application 63/072,685, filed on Aug. 31, 2020.
Prior Publication US 2022/0062645 A1, Mar. 3, 2022
Int. Cl. A61N 1/37 (2006.01)
CPC A61N 1/3712 (2013.01) 19 Claims
OG exemplary drawing
 
1. A system comprising:
stimulation circuitry configured to generate a pacing stimulus;
sensing circuitry configured to sense an evoked response after the pacing stimulus, wherein the evoked response is indicative of capture of heart muscle in response to the pacing stimulus; and
processing circuitry configured to:
determine classification features from the evoked response;
apply the classification features to a classification model, the classification model generated by a machine learning algorithm using one or more test sets comprising a plurality of sample evoked responses for each of a plurality of classifications, wherein the plurality of classifications includes a selective capture, non-selective capture, and right ventricular capture;
based on the output of the model, classify the evoke response as a non-selective capture classification as a change from a selective capture classification for a previous evoked response; and
in response to determining the evoked response includes the change from the selective capture classification to the non-selective capture classification, change an amplitude level of pacing stimulus based on an amplitude level of the pacing stimulus causing an evoked response including a selective capture classification.