Method and apparatus for beat acquisition during template generation in a medical device having dual sensing vectors

摘要

Techniques are described for generating beat templates and utilizing those beat templates to detect a cardiac event, e.g., a tachyarrhythmia. In particular, example methods and devices for acquiring qualified beats for template generation are described. Additionally, techniques are described for selecting subsets of the qualified beats to actually use in generating a beat template.

主权项

1. A method of acquiring qualified beats for template generation in a cardiac medical device comprising:
obtaining a first cardiac signal on a first sensing vector formed via a first subset of a plurality of extravascular electrodes; obtaining a second cardiac signal on a second sensing vector formed via a second subset of the plurality of extravascular electrodes having at least one electrode different than the first subset, wherein the second cardiac signal is obtained concurrently with the first cardiac signal; identifying beats within the first cardiac signal and the second cardiac signal; applying beat qualification criteria to the beats within the first cardiac signal and the second cardiac signal to determine whether each of the beats is a qualified beat; and generating a beat template based on at least a portion of the beats determined to be qualified beats.