Capture detection with cross chamber backup pacing
First Claim
1. A method of performing capture detection with backup pacing, comprising:
- delivering a pacing pulse to a first heart chamber;
sensing a cardiac signal having one or more evoked response features of the first heart chamber following delivery of the pacing pulse, the one or more evoked response features indicative of the response of the first heart chamber to the pacing pulse;
classifying a cardiac response to the pacing pulse based on the one or more evoked response features of the sensed cardiac signal;
determining a timing of the one or more evoked response features;
determining a timing for delivery of a backup pacing pulse, the timing for delivery of the backup pacing pulse is dependent on the determined timing of the one or more evoked response features; and
delivering the backup pacing pulse to a second heart chamber contralateral to the first heart chamber based on the determined timing for delivery of the backup pacing pulse, wherein delivering the pacing pulse, sensing, classifying, determining the timing of the one or more evoked response features, determining the timing for delivery of the backup pacing pulse, and delivering the backup pacing pulse occur within each of a plurality of sequential cardiac cycles and are each performed at least in part by circuitry of a medical device.
1 Assignment
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Accused Products
Abstract
In connection with capture detection for a heart chamber with backup pacing in a contralateral heart chamber, a cardiac signal of the first heart chamber is sensed following delivery of a pacing pulse. The cardiac response of the first heart chamber to the pacing pulse is classified based on one or more features of the sensed cardiac signal. A backup pacing pulse is delivered to a second heart chamber contralateral to the first heart chamber. For example, the timing of the delivery of the backup pacing pulse may be based on the expected or detected timing of the features used to classify the cardiac pacing response. The backup pace may be delivered within a detection window used for sensing the features indicative of the cardiac pacing response.
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Citations
23 Claims
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1. A method of performing capture detection with backup pacing, comprising:
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delivering a pacing pulse to a first heart chamber; sensing a cardiac signal having one or more evoked response features of the first heart chamber following delivery of the pacing pulse, the one or more evoked response features indicative of the response of the first heart chamber to the pacing pulse; classifying a cardiac response to the pacing pulse based on the one or more evoked response features of the sensed cardiac signal; determining a timing of the one or more evoked response features; determining a timing for delivery of a backup pacing pulse, the timing for delivery of the backup pacing pulse is dependent on the determined timing of the one or more evoked response features; and delivering the backup pacing pulse to a second heart chamber contralateral to the first heart chamber based on the determined timing for delivery of the backup pacing pulse, wherein delivering the pacing pulse, sensing, classifying, determining the timing of the one or more evoked response features, determining the timing for delivery of the backup pacing pulse, and delivering the backup pacing pulse occur within each of a plurality of sequential cardiac cycles and are each performed at least in part by circuitry of a medical device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for timing delivery of contralateral backup pacing pulses, the method comprising:
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delivering a plurality of pacing pulses to a first heart chamber over a plurality of cardiac cycles, one pacing pulse of the plurality of pacing pulses delivered for each cardiac cycle of the plurality of cardiac cycles; determining timing of each of a plurality of evoked responses, each evoked response of the plurality associated with delivery of a respective one of the plurality of pacing pulses; delivering a plurality of backup pacing pulses over the plurality of cardiac cycles, each backup pulse of the plurality delivered to a heart chamber contralateral to the first heart chamber for a respective one of the plurality of cardiac cycles; and varying timing of the delivery of the plurality of backup pacing pulses based on the timing of the plurality of evoked responses, wherein delivering the pacing pulses, determining timing, delivering the backup pacing pulses, and varying are each performed at least in part by circuitry of a medical device. - View Dependent Claims (22)
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23. A method of performing capture detection with backup pacing, comprising:
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delivering a pacing pulse to a first heart chamber; sensing a cardiac signal having one or more evoked response features of the first heart chamber following delivery of the pacing pulse, the one or more evoked response features indicative of the response of the first heart chamber to the pacing pulse; classifying a cardiac response to the pacing pulse based on the one or more evoked response features of the sensed cardiac signal; determining a timing of the one or more evoked response features; determining a timing for delivery of a backup pacing pulse, the timing for delivery of the backup pacing pulse is dependent on the determined timing of the one or more evoked response features; delivering the backup pacing pulse to a second heart chamber contralateral to the first heart chamber based on the determined timing for delivery of the backup pacing pulse, wherein delivering the pacing pulse, sensing, classifying, determining the timing of the one or more evoked response features, determining the timing for delivery of the backup pacing pulse, and delivering the backup pacing pulse are each performed for each of a plurality of cardiac cycles and are each performed at least in part by circuitry of a medical device; and modifying a pacing energy parameter of the backup pacing pulse, wherein modifying the pacing energy parameter is performed for each of the plurality of cardiac cycles until capture no longer occurs based on the classifying of the cardiac response.
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Specification