IMPLANTED DEVICE DATA TO GUIDE ABLATION THERAPY
First Claim
1. A medical device system for guiding a cardiac ablation therapy, comprising;
- a plurality of implantable electrodes for sensing cardiac signals;
an implantable cardiac event detector coupled to the plurality ofimplantable electrodes for detecting spontaneous cardiac events from the sensed cardiac signals;
an implantable pulse generator coupled to the plurality of implantableelectrodes for delivering pacing pulses;
an implantable controller to control the pulse generator to deliver aplurality of pacing pulses in response to detecting a spontaneous cardiac event using a first electrode of the plurality of implantable electrodes and measure a return cycle length in response to the plurality of pacing pulses; and
a processor configured to cluster the spontaneous cardiac event with apreviously detected cardiac event in response to the measured return cycle length, wherein the controller is further configured to compute a transit time interval using the return cycle length, the computed transit time interval corresponding to a distance traversed by a depolarization associated with the last one of the plurality of pacing pulses when a reset condition occurs, and wherein the processor is further configured to estimate a target ablation site in response to the computed transit time interval.
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Accused Products
Abstract
A medical device system and associated method for guiding ablation therapy sense cardiac signals using implantable electrodes and detect spontaneous cardiac events from the sensed cardiac signals. Pacing pulses are delivered and a return cycle length is measured in response to the plurality of pacing pulses. The spontaneous cardiac event is clustered with a previously detected cardiac event in response to the measured return cycle length, and a targeted ablation site is estimated in response to the measured return cycle length. A transit time interval, corresponding to a distance traversed by a depolarization associated with a last one of the plurality of pacing pulses when a reset condition occurs, is computed using the return cycle length, and the ablation site is estimated in response to the computed transit time interval.
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Citations
23 Claims
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1. A medical device system for guiding a cardiac ablation therapy, comprising;
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a plurality of implantable electrodes for sensing cardiac signals; an implantable cardiac event detector coupled to the plurality of implantable electrodes for detecting spontaneous cardiac events from the sensed cardiac signals; an implantable pulse generator coupled to the plurality of implantable electrodes for delivering pacing pulses; an implantable controller to control the pulse generator to deliver a plurality of pacing pulses in response to detecting a spontaneous cardiac event using a first electrode of the plurality of implantable electrodes and measure a return cycle length in response to the plurality of pacing pulses; and a processor configured to cluster the spontaneous cardiac event with a previously detected cardiac event in response to the measured return cycle length, wherein the controller is further configured to compute a transit time interval using the return cycle length, the computed transit time interval corresponding to a distance traversed by a depolarization associated with the last one of the plurality of pacing pulses when a reset condition occurs, and wherein the processor is further configured to estimate a target ablation site in response to the computed transit time interval. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for guiding a cardiac ablation therapy in a medical device system, comprising;
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sensing cardiac signals using a plurality of implantable electrodes; detecting spontaneous cardiac events from the sensed cardiac signals using an implantable cardiac event detector coupled to the plurality of implantable electrodes; delivering pacing pulses using a first electrode of the plurality of implantable electrodes using an implantable pulse generator coupled to the implantable electrodes in response to detecting a spontaneous cardiac event; measuring a return cycle length in response to the plurality of pacing pulses; clustering the spontaneous cardiac event with a previously detected cardiac event in response to the measured return cycle length; estimating a targeted ablation site in response to the measured return cycle length; computing a transit time interval using the return cycle length, the computed transit time interval corresponding to a distance traversed by a depolarization associated with a last one of the plurality of pacing pulses when a reset condition occurs; and estimating the ablation site in response to the computed transit time interval. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A computer-readable medium storing a set of instructions which cause a medical device system to perform a method, the method comprising:
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sensing cardiac signals using a plurality of implantable electrodes; detecting spontaneous cardiac events from the sensed cardiac signals using an implantable cardiac event detector coupled to the plurality of implantable electrodes; delivering pacing pulses using a first electrode of the plurality of implantable electrodes using an implantable pulse generator coupled to the implantable electrodes in response to detecting a spontaneous cardiac event; measuring a return cycle length in response to the plurality of pacing pulses; clustering the spontaneous cardiac event with a previously detected cardiac event in response to the measured return cycle length; estimating a targeted ablation site in response to the measured return cycle length; computing a transit time interval using the return cycle length, the computed transit time interval corresponding to a distance traversed by a depolarization associated with a last one of the plurality of pacing pulses when a reset condition occurs; and estimating the ablation site in response to the computed transit time interval.
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Specification