Staged rhythm detection system and method
First Claim
1. A medical device for detecting and treating tachyarrhythmia, comprising:
- a sensing module configured to sense cardiac events in response to a cardiac signal acquired via at least some of a plurality of electrodes; and
a processing module configured to;
perform an initial detection process comprising detecting a shockable cardiac rhythm by comparing the cardiac signal to a first set of detection criteria;
establish, by analyzing the cardiac signal, at least one patient-specific detection threshold during the initial detection process; and
upon establishing the at least one patient-specific detection threshold, stop the initial detection process and start a next detection process comprising comparing the cardiac signal to a second set of detection criteria comprising the at least one patient-specific detection threshold,the first set of detection criteria relating to a first set of cardiac signal features, and the second set of detection criteria relating to a second set of cardiac signal features different than the first set of cardiac signal features.
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Abstract
A medical device and associated method for detecting and treating tachyarrhythmias acquires a cardiac signal using electrodes coupled to a sensing module. During an initial detection process, a shockable cardiac rhythm is detected by a processing module configured to compare the cardiac signal to a first set of detection criteria. By analyzing the cardiac signal, the processing module establishes at least one patient-specific detection threshold during the initial detection process. Upon establishing the at least one patient-specific detection threshold, the initial detection process is stopped, and a next detection process is started which includes comparing the cardiac signal to a second set of detection criteria including the at least one patient-specific detection threshold. In some embodiments, user programming of tachyarrhythmia detection parameters is not required.
75 Citations
41 Claims
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1. A medical device for detecting and treating tachyarrhythmia, comprising:
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a sensing module configured to sense cardiac events in response to a cardiac signal acquired via at least some of a plurality of electrodes; and a processing module configured to; perform an initial detection process comprising detecting a shockable cardiac rhythm by comparing the cardiac signal to a first set of detection criteria; establish, by analyzing the cardiac signal, at least one patient-specific detection threshold during the initial detection process; and upon establishing the at least one patient-specific detection threshold, stop the initial detection process and start a next detection process comprising comparing the cardiac signal to a second set of detection criteria comprising the at least one patient-specific detection threshold, the first set of detection criteria relating to a first set of cardiac signal features, and the second set of detection criteria relating to a second set of cardiac signal features different than the first set of cardiac signal features. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 36, 37)
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17. A medical device for detecting and treating tachyarrhythmia, comprising:
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means for sensing cardiac events in response to a cardiac signal acquired via at least some of a plurality of electrodes; means for performing an initial detection process comprising detecting a shockable cardiac rhythm by comparing the cardiac signal to a first set of detection criteria; means for establishing, by analyzing the cardiac signal, at least one patient-specific detection threshold during the initial detection process; and means for, upon establishing the at least one patient-specific detection threshold, stopping the initial detection process and starting a next detection process comprising comparing the cardiac signal to a second set of detection criteria comprising the at least one patient-specific detection threshold, the first set of detection criteria relating to a first set of cardiac signal features, and the second set of detection criteria relating to a second set of cardiac signal features different than the first set of cardiac signal features. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 38, 39)
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33. A medical device for detecting and treating tachyarrhythmia, comprising:
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a sensing module configured to sense cardiac events in response to a cardiac signal acquired via at least some of a plurality of electrodes; and a processing module configured to; perform an initial detection process comprising detecting a shockable cardiac rhythm by comparing the cardiac signal to a first set of detection criteria comprising population-based detection thresholds, wherein the initial detection process is performed without a user-programmed detection parameter; establish, by analyzing the cardiac signal, at least one patient-specific detection threshold during the initial detection process; and upon establishing the at least one patient-specific detection threshold, stop the initial detection process and start a next detection process comprising comparing the cardiac signal to a second set of detection criteria comprising the at least one patient-specific detection threshold, wherein the next detection process is performed without a user-programmed detection parameter, the first set of detection criteria relating to a first set of cardiac signal features, and the second set of detection criteria relating to a second set of cardiac signal features different than the first set of cardiac signal features. - View Dependent Claims (34, 35, 40, 41)
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Specification