Cardiac rhythm template generation system and method
First Claim
Patent Images
1. A method, comprising:
- sensing rate and shock channel signals;
aligning the shock channel signals using a feature of the rate channel signals;
generating a candidate template using the aligned shock channel signals;
storing the candidate template if a current cardiac rhythm correlates with the candidate template; and
retaining a previously stored template or not storing the candidate template if the current cardiac rhythm fails to correlate with the candidate template.
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Abstract
A method and system provides for generating a snapshot representative of one beat of a patient'"'"'s normal cardiac rhythm. Cardiac rate channel signals and shock channel signals are sensed. A fiducial point is determined for a predefined number of the cardiac rate channel signals. A predefined number of the shock channel signals are aligned using the fiducial point. A template is generated using the aligned shock channel signals, whereby the template is representative of one of the patient'"'"'s normal supra-ventricular conducted cardiac beats. The template is updated on a periodic basis.
29 Citations
20 Claims
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1. A method, comprising:
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sensing rate and shock channel signals; aligning the shock channel signals using a feature of the rate channel signals; generating a candidate template using the aligned shock channel signals; storing the candidate template if a current cardiac rhythm correlates with the candidate template; and retaining a previously stored template or not storing the candidate template if the current cardiac rhythm fails to correlate with the candidate template. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A body implantable system for generating a snapshot representative of one beat of a patient'"'"'s normal cardiac rhythm, comprising:
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a plurality of electrodes electrically coupled to a heart; a detector system, coupled to the electrodes, the detector system configured to detect rate channel signals and shock channel signals sensed by the electrodes; and a control system coupled to the detector system, the control system configured to determine fiducial points for the rate channel signals, align the shock channel signals using the fiducial points, generate a candidate template using the aligned shock channel signals, store the candidate template if a current cardiac rhythm correlates with the candidate template, and retain a previously stored template or not store the candidate template if the current cardiac rhythm fails to correlate with the candidate template. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A system, comprising:
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a plurality of electrodes electrically coupled to a heart; a detector system, coupled to the electrodes, the detector system configured to detect rate channel signals and shock channel signals sensed by the electrodes; means for aligning the shock channel signals using a feature of the rate channel signals; means for generating a candidate template using the aligned shock channel signals; means for storing the candidate template if a current cardiac rhythm correlates with the candidate template; and means for retaining a previously stored template or not storing the candidate template if the current cardiac rhythm fails to correlate with the candidate template. - View Dependent Claims (18, 19, 20)
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Specification