Multi Channel Approach to Capture Verfication

• US 20090240301A1
• Filed: 05/05/2009
• Published: 09/24/2009
• Est. Priority Date: 07/12/2005
• Status: Active Grant

• Current Assignee: Qingsheng Zhu, Scott A. Meyers, Yanting Dong
• Original Assignee: Qingsheng Zhu, Scott A. Meyers, Yanting Dong
• Inventors: Meyer, Scott A., Dong, Yanting, Zhu, Qingsheng
• Granted Patent: US 7,979,113 B2
• Time in Patent Office: Days
• US Class Current: 607/28
• CPC Class Codes: A61B 5/35 by template matching
• CPC Class Codes: A61B 5/7217 of noise originating from a therapeutic or surgical apparatus, e.g. from a pacemaker
• CPC Class Codes: A61B 5/7264 Classification of physiological signals or data, e.g. using neural networks, statistical classifiers, expert systems or fuzzy systems neural networks per se G06N3/00; expert systems per se G06N5/00
• CPC Class Codes: A61N 1/371 Capture, i.e. successful stimulation
• CPC Class Codes: G16H 50/20 for computer-aided diagnosis, e.g. based on medical expert systems

Abstract

Methods and systems involve classifying the cardiac response to pacing using a multi-channel approach. Multiple cardiac response signals are sensed via multiple sense channels. Each sense channel comprises a distinct combination of electrodes and sensing circuitry. The cardiac response to the pacing pulse is classified based on the morphology of the cardiac response signals. Classifying the cardiac response involves discriminating between capture, fusion, non-capture, and non-capture with intrinsic activity.

Claims

1. A method of classifying a cardiac response to a pacing pulse, comprising:

sensing a cardiac response to a pacing pulse via multiple sense channels, each sense channel comprising a distinct combination of sense electrodes and sensing circuitry; and

discriminating between cardiac pacing responses including capture, non-capture with intrinsic activity, and fusion, comprising;

discriminating between a first two cardiac pacing responses using a first cardiac response signal sensed via a first sense channel of the multiple sense channels; and

detecting a third cardiac pacing response using a second cardiac response signal sensed via a second sense channel of the multiple sense channels.

2. The method of claim 1, wherein:

discriminating between the first two cardiac pacing responses comprises discriminating between capture and non-capture with intrinsic activity; and

detecting the third cardiac pacing response comprises detecting fusion.

3. The method of claim 1, wherein:

discriminating between the first two cardiac pacing responses comprises discriminating between capture and fusion; and

detecting the third cardiac pacing response comprises detecting non-capture with intrinsic activity.