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US 11,998,750 B2Granted
Implantable medical device and method for determining his bundle pacing capture
AssigneeMedtronic, Inc.
InventorsTodd J. Sheldon, Elizabeth A. Mattson, Eric R. Williams, Zhongping Yang, Shawn M. Campbell
Life of this patent
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Abstract
An implantable medical device system receives a cardiac electrical signal produced by a patient's heart and comprising atrial P-waves and delivers a His bundle pacing pulse to the patient's heart via a His pacing electrode vector. The system determines a timing of a sensed atrial P-wave relative to the His bundle pacing pulse and determines a type of capture of the His bundle pacing pulse in response to the determined timing of the atrial P-wave.
Claims19
A medical device, comprising:
- a sensing circuit configured to sense at least a first cardiac electrical signal produced by a heart via a first sensing electrode vector;
- a therapy delivery circuit configured to deliver a first pacing pulse having a first pacing pulse energy;
- and
- a control circuit configured to detect non-selective capture of both of myocardial tissue and at least a portion of a ventricular conduction system by the first pacing pulse based on an analysis of at least the first cardiac electrical signal by:
- determining a time interval from the first pacing pulse to a QRS signal of the first cardiac electrical signal;
- comparing the time interval to a first time interval threshold, the first time interval threshold being a selective capture time interval threshold corresponding to capture of the ventricular conduction system without capture of myocardial tissue;
- and
- detecting the non-selective capture of both of myocardial tissue and at least the portion of the ventricular conduction system based on at least the time interval from the first pacing pulse to the QRS signal being less than the first time interval threshold.
5 more elements
A method, comprising:
- sensing at least a first cardiac electrical signal produced by a heart via a first sensing electrode vector;
- delivering a first pacing pulse having a first pacing pulse energy;
- and
- detecting non-selective capture of both of myocardial tissue and at least a portion of a ventricular conduction system by the first pacing pulse based on an analysis of at least the first cardiac electrical signal by:
- determining a time interval from the first pacing pulse to a QRS signal of the first cardiac electrical signal;
- comparing the time interval to a first time interval threshold, the first time interval threshold being a selective capture time interval threshold corresponding to capture of the ventricular conduction system without capture of myocardial tissue;
- and
- detecting the non-selective capture of both of myocardial tissue and at least the portion of the ventricular conduction system based on at least the time interval from the first pacing pulse to the QRS signal being less than the first time interval threshold.
5 more elements
Dependencies are inferred from the claim text.