STAGED RHYTHM DETECTION SYSTEM AND METHOD
First Claim
1. A method for use in a medical device configured to detect and treat tachyarrhythmia, the method comprising:
- acquiring a cardiac signal using a plurality of electrodes coupled to a sensing module;
during an initial detection process detecting a shockable cardiac rhythm by a processing module configured to compare the cardiac signal to a first set of detection criteria;
establishing, by the processing module 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, 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, 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.
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Citations
29 Claims
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1. A method for use in a medical device configured to detect and treat tachyarrhythmia, the method comprising:
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acquiring a cardiac signal using a plurality of electrodes coupled to a sensing module; during an initial detection process detecting a shockable cardiac rhythm by a processing module configured to compare the cardiac signal to a first set of detection criteria; establishing, by the processing module 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, 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, 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)
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15. A medical device for detecting and treating tachyarrhythmia, comprising:
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a plurality of electrodes for acquiring a cardiac signal; a sensing module coupled to the plurality of electrodes for sensing cardiac events in response to the cardiac signal; 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, 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 (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A non-transitory, computer-readable storage medium storing a set of instructions, which when executed by a processor of a medical device causes the device to:
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acquire a cardiac signal using a plurality of electrodes coupled to a sensing module; during an initial detection process, detect 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, 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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Specification