Determination of cardiac pacing parameters based on non-localized sensing
First Claim
1. A method for determining an atrioventricular delay (AVD) for cardiac pacing therapy, comprising:
- sensing, using body-implantable electrodes, at least one cardiac activation signal using a cardiac electrode pair providing non-local sensing;
estimating a conduction delay using the at least one non-local cardiac activation signal; and
determining the AVD based on the conduction delay.
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Accused Products
Abstract
An atrioventricular delay (AVD) for cardiac pacing therapy is determined based, at least in part, on one or more cardiac activation signals sensed using body-implantable electrodes providing non-local sensing. A conduction delay is estimated using a non-local cardiac activation signal and the AVD is determined based on the conduction delay. Estimating the conduction delay may involve measuring a P-wave width or measuring a QRS complex width of the non-local signal. If multiple signals are sensed, the conduction delay may be estimated from a selected signal or may be estimated by forming a representative signal such as through averaging or other methods. The AVD may be determined as a function of the estimated conduction delay.
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Citations
24 Claims
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1. A method for determining an atrioventricular delay (AVD) for cardiac pacing therapy, comprising:
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sensing, using body-implantable electrodes, at least one cardiac activation signal using a cardiac electrode pair providing non-local sensing; estimating a conduction delay using the at least one non-local cardiac activation signal; and determining the AVD based on the conduction delay. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A cardiac rhythm management system, comprising:
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at least one pair of implantable electrodes configured to electrically couple to a heart and to provide non-local sensing of cardiac electrical activity; sense circuitry configured to sense at least one cardiac activation signal from the at least one electrode pair; and a processor configured to estimate a conduction delay based on the at least one cardiac activation signal and to determine an AVD for cardiac pacing therapy based on the conduction delay. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. A cardiac rhythm management system, comprising:
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at least one pair of implantable electrodes configured to electrically couple to a heart and to provide non-local sensing of cardiac electrical activity; sense circuitry configured to sense at least one cardiac activation signal from the at least one electrode pair; means for estimating a conduction delay based on the at least one cardiac activation signal; and means for determining at least one pacing parameter for cardiac pacing therapy based on the conduction delay. - View Dependent Claims (23, 24)
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Specification