Identify insulation breach using electrograms
First Claim
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1. An implantable medical system, comprising:
- at least one medical electrical lead including;
a plurality of electrodes carried by the at least one medical electrical lead; and
a plurality of electrical conductors, each of the plurality of electrical conductors electrically connected to a respective one of the plurality of electrodes;
an implantable medical device adapted to be coupled to the at least one medical electrical lead, the implantable medical device including;
a sensing module electrically coupled to the plurality of electrical conductors when the implantable medical device is coupled to the at least one medical electrical lead, the sensing module configured to sense a cardiac signal using at least one of the plurality of electrodes; and
a controller electrically coupled to the sensing module and configured to receive the cardiac signal, determine a slope of the cardiac signal, compare the slope of the cardiac signal to a short circuit threshold, and detect a short circuit event within the medical electrical lead when the slope of the cardiac signal exceeds the short circuit threshold.
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Abstract
An implantable medical device capable of sensing cardiac signals and delivering cardiac electrical stimulation therapies is enabled to detect a short circuit event. A signal is sensed by a sensing module coupled to electrodes. A controller detects a short circuit event in response to a slope of the sensed signal exceeding a short circuit threshold.
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Citations
12 Claims
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1. An implantable medical system, comprising:
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at least one medical electrical lead including; a plurality of electrodes carried by the at least one medical electrical lead; and a plurality of electrical conductors, each of the plurality of electrical conductors electrically connected to a respective one of the plurality of electrodes; an implantable medical device adapted to be coupled to the at least one medical electrical lead, the implantable medical device including; a sensing module electrically coupled to the plurality of electrical conductors when the implantable medical device is coupled to the at least one medical electrical lead, the sensing module configured to sense a cardiac signal using at least one of the plurality of electrodes; and a controller electrically coupled to the sensing module and configured to receive the cardiac signal, determine a slope of the cardiac signal, compare the slope of the cardiac signal to a short circuit threshold, and detect a short circuit event within the medical electrical lead when the slope of the cardiac signal exceeds the short circuit threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A non-transitory, computer-readable medium storing a set of instructions which, when executed by a controller of an implantable medical device, cause the implantable medical device to:
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sense a cardiac signal via a plurality of electrodes carried by an implantable medical electrical lead; determine a slope of the cardiac signal, compare the slope of the cardiac signal to a short circuit threshold; and detect a short circuit event within the implantable medical electrical lead when the slope of the cardiac signal exceeds a short circuit threshold.
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Specification