Automatic thresholds for atrial tachyarrhythmia detection in an implantable medical device
First Claim
1. A method of detecting an atrial tachyarrhythmia episode by a medical device comprising:
- obtaining a cardiac electrical signal sensed via a plurality of electrodes coupled to sensing circuitry of the medical device;
determining a time duration of the cardiac electrical signal classified as an atrial tachyarrhythmia;
determining that the time duration is greater than or equal to a first detection threshold;
detecting a first atrial tachyarrhythmia episode by a processor of the medical device in response to the time duration being greater than or equal to the first detection threshold;
determining that detection threshold adjustment criteria are met based on at least the detected first atrial tachyarrhythmia episode; and
adjusting the first detection threshold to a second detection threshold different than the first detection threshold in response to the detection threshold adjustment criteria being met.
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Accused Products
Abstract
A system for detecting an atrial tachyarrhythmia episode includes a medical device having sensing circuitry configured to receive a cardiac electrical signal from electrodes coupled to the medical device and a processor configured to detect an atrial tachyarrhythmia episode in response to a time duration of the cardiac electrical signal classified as an atrial tachyarrhythmia being greater than or equal to a first detection threshold. The processor is configured to determine if detection threshold adjustment criteria are met based on at least the detected first atrial tachyarrhythmia episode and adjust the first detection threshold to a second detection threshold different than the first detection threshold in response to the detection threshold adjustment criteria being met.
54 Citations
35 Claims
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1. A method of detecting an atrial tachyarrhythmia episode by a medical device comprising:
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obtaining a cardiac electrical signal sensed via a plurality of electrodes coupled to sensing circuitry of the medical device; determining a time duration of the cardiac electrical signal classified as an atrial tachyarrhythmia; determining that the time duration is greater than or equal to a first detection threshold; detecting a first atrial tachyarrhythmia episode by a processor of the medical device in response to the time duration being greater than or equal to the first detection threshold; determining that detection threshold adjustment criteria are met based on at least the detected first atrial tachyarrhythmia episode; and adjusting the first detection threshold to a second detection threshold different than the first detection threshold in response to the detection threshold adjustment criteria being met. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A medical device system for detecting an atrial tachyarrhythmia episode, comprising:
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sensing circuitry configured to receive a cardiac electrical signal from a plurality of electrodes coupled to the sensing circuitry; and a processor configured to; detect a first atrial tachyarrhythmia episode in response to a time duration of the cardiac electrical signal classified as an atrial tachyarrhythmia being greater than or equal to a first detection threshold; determine if detection threshold adjustment criteria are met based on at least the detected first atrial tachyarrhythmia episode; and adjust the first detection threshold to a second detection threshold different than the first detection threshold in response to the detection threshold adjustment criteria being met. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A non-transitory, computer-readable storage medium storing instructions for causing a processor included in a medical device to perform a method for detecting an atrial tachyarrhythmia episode, the method comprising:
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receiving a cardiac electrical signal via a plurality of electrodes coupled to sensing circuitry of the medical device; detecting a first atrial tachyarrhythmia episode in response to a time duration of the cardiac electrical signal classified as an atrial tachyarrhythmia being greater than or equal to a first detection threshold; determining if detection threshold adjustment criteria are met based on at least the detected first atrial tachyarrhythmia episode; and adjusting the first detection threshold to a second detection threshold different than the first detection threshold in response to the detection threshold adjustment criteria being met.
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Specification