Method and apparatus for beat acquisition during template generation in a medical device having dual sensing vectors
First Claim
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1. A medical device for generating a template, comprising:
- a plurality of electrodes configured to sense a cardiac signal;
a storage device comprising a plurality of subgroups for storing beats; and
a processor configured to;
identify a plurality of beats in the sensed cardiac signal,determine that a first beat of the plurality of beats is an initial beat to be stored in the first subgroup of the plurality of subgroups,set the first beat as a first subgroup template beat in response to the first beat being the initial beat,determine, for each remaining beat of the plurality of beats, whether to store the beat within a subgroup of the plurality of subgroups of the storage device,determine whether a number of beats stored in one of the plurality of subgroups exceeds a subgroup threshold, and in response to the number of beats stored in the one of the plurality of subgroups exceeding the subgroup threshold, andgenerate a template beat using one or more beats of the one of the plurality of subgroups that exceeds the subgroup threshold.
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Abstract
A method and medical device for generating a template that includes sensing a cardiac signal from a plurality of electrodes, determining a plurality of beats in response to the sensed cardiac signal, determining whether to store a beat of the plurality of beats in a subgroup of a plurality of subgroups for storing beats, determining whether a number of beats stored in one of the plurality of subgroups exceeds a subgroup threshold, and generating a template in response to beats stored in the one of the plurality of subgroups that exceeds the subgroup threshold.
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Citations
20 Claims
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1. A medical device for generating a template, comprising:
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a plurality of electrodes configured to sense a cardiac signal; a storage device comprising a plurality of subgroups for storing beats; and a processor configured to; identify a plurality of beats in the sensed cardiac signal, determine that a first beat of the plurality of beats is an initial beat to be stored in the first subgroup of the plurality of subgroups, set the first beat as a first subgroup template beat in response to the first beat being the initial beat, determine, for each remaining beat of the plurality of beats, whether to store the beat within a subgroup of the plurality of subgroups of the storage device, determine whether a number of beats stored in one of the plurality of subgroups exceeds a subgroup threshold, and in response to the number of beats stored in the one of the plurality of subgroups exceeding the subgroup threshold, and generate a template beat using one or more beats of the one of the plurality of subgroups that exceeds the subgroup threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 16, 17, 18, 19)
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10. A subcutaneous cardiac device for generating a template, comprising:
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a plurality of electrodes configured to sense a cardiac signal; a storage device; a processor configured to; identify a plurality of beats in the sensed cardiac signal, determine that a first beat of the plurality of beats is an initial beat to be stored in the first subgroup of the plurality of subgroups, set the first beat as a first subgroup template beat in response to the first beat being the initial beat, determine, for each remaining beat of the plurality of beats, whether to store the beat within a subgroup of a plurality of subgroups of the storage device, determine whether a number of beats stored in one of the plurality of subgroups exceeds a subgroup threshold, generate a template beat in response to the number of beats stored in the one of the plurality of subgroups exceeding the subgroup threshold using one or more beats stored in the one of the plurality of subgroups that exceeds the subgroup threshold, and detect a cardiac event based at least on a comparison of beats subsequent the plurality of beats to the generated template beat; and a high voltage output circuit to deliver therapy via electrodes of the plurality of electrodes in response to the processor detecting the cardiac event. - View Dependent Claims (11, 12, 13, 14, 15, 20)
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Specification