Method and apparatus for discriminating tachycardia events in a medical device using two sensing vectors
First Claim
1. A method of detecting a cardiac event in a medical device, comprising:
- sensing cardiac signals from a plurality of electrodes, the plurality of electrodes forming a first sensing vector sensing a first interval of the cardiac signal during a predetermined time period and a second sensing vector simultaneously sensing a second interval of the cardiac signal during the predetermined time period;
identifying each of the first interval and the second interval as being one of shockable or not shockable in response to a first processing of the first interval and the second interval;
identifying each of the first interval and the second interval as being one of shockable or not shockable in response to a second processing of the first interval and the second interval, the second processing being different from the first processing and comprising a beat-based analysis identifying individual beats within the first interval and the second interval;
determining whether to deliver therapy for the cardiac event in response to identifying each of the first interval and the second interval as being one of shockable or not shockable in response to both the first processing of the first interval and the second interval and the second processing of the first interval and the second interval; and
delivering therapy to treat the cardiac event based on identifying each of the first interval and the second interval as being shockable in response to both the first processing and the second processing.
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Accused Products
Abstract
A method and medical device for detecting a cardiac event that includes sensing cardiac signals from a plurality of electrodes forming a first sensing vector sensing a first interval of the cardiac signal during a predetermined time period and a second sensing vector simultaneously sensing a second interval of the cardiac signal during the predetermined time period, identifying each of the first interval and the second interval as being one of shockable and not shockable in response to first processing of the first interval and the second interval and in response to second processing of one or both of the first interval and the second interval, the second processing being different from the first processing, and determining whether to deliver therapy for the cardiac event in response to identifying each of the first interval and the second interval as being one of shockable and not shockable in response to both the first processing and the second processing of the first interval and the second interval.
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Citations
35 Claims
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1. A method of detecting a cardiac event in a medical device, comprising:
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sensing cardiac signals from a plurality of electrodes, the plurality of electrodes forming a first sensing vector sensing a first interval of the cardiac signal during a predetermined time period and a second sensing vector simultaneously sensing a second interval of the cardiac signal during the predetermined time period; identifying each of the first interval and the second interval as being one of shockable or not shockable in response to a first processing of the first interval and the second interval; identifying each of the first interval and the second interval as being one of shockable or not shockable in response to a second processing of the first interval and the second interval, the second processing being different from the first processing and comprising a beat-based analysis identifying individual beats within the first interval and the second interval; determining whether to deliver therapy for the cardiac event in response to identifying each of the first interval and the second interval as being one of shockable or not shockable in response to both the first processing of the first interval and the second interval and the second processing of the first interval and the second interval; and delivering therapy to treat the cardiac event based on identifying each of the first interval and the second interval as being shockable in response to both the first processing and the second processing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A medical device for detecting a cardiac event, comprising:
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a plurality of electrodes sensing cardiac signals, the plurality of electrodes forming a first sensing vector sensing a first interval of the cardiac signal during a predetermined time period and a second sensing vector simultaneously sensing a second interval of the cardiac signal during the predetermined time period; a processor configured to identify each of the first interval and the second interval as being one of shockable or not shockable in response to a first processing of the first interval and the second interval, identify each of the first interval and the second interval as being one of shockable or not shockable in response to a second processing of the first interval and the second interval, the second processing being different from the first processing and comprising a beat-based analysis identifying individual beats within the first interval and the second interval, and determine whether to deliver therapy for the cardiac event in response to identifying each of the first interval and the second interval as being one of shockable or not shockable in response to both the first processing of the first interval and the second interval and the second processing of the first interval; and a therapy module configured to deliver therapy to treat the cardiac event based on identifying each of the first interval and the second interval as being shockable in response to both the first processing and the second processing. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A non-transitory, computer-readable storage medium storing instructions for causing a processor included in a medical device to perform a method for determining a cardiac event, the method comprising:
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sensing cardiac signals from a plurality of electrodes, the plurality of electrodes forming a first sensing vector sensing a first interval of the cardiac signal during a predetermined time window and a second sensing vector simultaneously sensing a second interval of the cardiac signal during the predetermined time window; identifying each of the first interval and the second interval as being one of shockable or not shockable in response to a first processing of the first interval and the second interval; identifying each of the first interval and the second interval as being one of shockable or not shockable in response to a second processing of the first interval and the second interval, the second processing being different from the first processing and comprising a beat-based analysis identifying individual beats within the first interval; determining whether to deliver therapy for the cardiac event in response to identifying each of the first interval and the second interval as being one of shockable or not shockable in response to both the first processing of the first interval and the second interval and the second processing of the first interval; and delivering therapy to treat the cardiac event based on identifying each of the first interval and the second interval as being shockable in response to both the first processing and the second processing. - View Dependent Claims (26)
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27. A method comprising:
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sensing cardiac signals from a plurality of electrodes, the plurality of electrodes forming a first sensing vector sensing a first set of cardiac signals during a time window and a second sensing vector simultaneously sensing a second set of cardiac signals during the time window; performing a first processing of the first set of cardiac signals and the second set of cardiac signals to identify each of the first set of cardiac signals and the second set of cardiac signals as being shockable or not shockable; and performing a second processing of the first set of cardiac signals and the second set of cardiac signals to identify each of the first set of cardiac signals and the second set of cardiac signals as being shockable or not shockable, wherein the second processing is different than the first processing and comprises a beat-based analysis identifying individual beats within the first interval; determining, based on the first processing and the second processing, whether to deliver cardiac therapy; and delivering therapy to treat the cardiac event based on the identifications of the first and second sets of cardiac signals being shockable. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35)
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Specification