Implantable medical device crosstalk evaluation and mitigation
First Claim
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1. A method comprising:
- determining with a first implantable medical device (IMD) a first electrical parameter value indicative of an impedance of an electrical path coupled to the first IMD, wherein determining the first electrical parameter value comprises;
controlling the first IMD to deliver a first electrical signal between at least two electrodes electrically connected to the first IMD;
controlling the first IMD to sense a second electrical signal subsequent to initiation of the delivery of the first electrical signal; and
determining the first electrical parameter value based on the first electrical signal and the second electrical signal;
activating delivery of electrical stimulation to a patient by a second IMD after determining the first electrical parameter value;
determining with the first IMD a second electrical parameter value indicative of the impedance of the electrical path while the second IMD delivers electrical stimulation;
determining whether the first and second electrical parameter values are within a threshold range of each other; and
generating an interference indication in response to determining the first and second electrical parameter values are not within the threshold range of each other.
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Abstract
Electrical crosstalk between two implantable medical devices or two different therapy modules of a common implantable medical device may be evaluated, and, in some examples, mitigated. In some examples, one of the implantable medical devices or therapy modules delivers electrical stimulation to a nonmyocardial tissue site or a nonvascular cardiac tissue site, and the other implantable medical device or therapy module delivers cardiac rhythm management therapy to a heart of the patient.
117 Citations
35 Claims
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1. A method comprising:
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determining with a first implantable medical device (IMD) a first electrical parameter value indicative of an impedance of an electrical path coupled to the first IMD, wherein determining the first electrical parameter value comprises; controlling the first IMD to deliver a first electrical signal between at least two electrodes electrically connected to the first IMD; controlling the first IMD to sense a second electrical signal subsequent to initiation of the delivery of the first electrical signal; and determining the first electrical parameter value based on the first electrical signal and the second electrical signal; activating delivery of electrical stimulation to a patient by a second IMD after determining the first electrical parameter value; determining with the first IMD a second electrical parameter value indicative of the impedance of the electrical path while the second IMD delivers electrical stimulation; determining whether the first and second electrical parameter values are within a threshold range of each other; and generating an interference indication in response to determining the first and second electrical parameter values are not within the threshold range of each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A system comprising:
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a first implantable medical device (IMD) configured to be implanted within a patient; a second IMD configured to be implanted within the patient; and a processor configured to determine a first electrical parameter value indicative of an impedance of an electrical path coupled to the first IMD, determine a second electrical parameter value indicative of the impedance of the electrical path while the second IMD delivers electrical stimulation to the patient, determine whether the first and second electrical parameter values are within a threshold range of each other, and generate an interference indication in response to determining the first and second electrical parameter values are not within the threshold range of each other, wherein the processor is configured to control the first IMD to deliver a first electrical signal and sense a second electrical signal subsequent to initiation of delivery of the first electrical signal, and wherein the processor is configured to determine the first electrical parameter value based on the first electrical signal and the second electrical signal. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A system comprising:
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means for determining a first electrical parameter value indicative of an impedance of an electrical path coupled to a first implantable medical device (IMD), wherein the means for determining the first electrical parameter value is configured to determine the first electrical parameter value by at least; controlling the first IMD to deliver a first electrical signal between at least two electrodes electrically connected to the first IMD; controlling the first IMD to sense a second electrical signal subsequent to initiation of the delivery of the first electrical signal; and determining the first electrical parameter value based on the first electrical signal and the second electrical signal; means for activating delivery of electrical stimulation to a patient by a second IMD after determining the first electrical parameter value; means for determining a second electrical parameter value indicative of the impedance of the electrical path while the second IMD delivers electrical stimulation; means for determining whether the first and second electrical parameter values are within a threshold range of each other; and means for generating an interference indication in response to the means for determining, determining that the first and second electrical parameter values are not within the threshold range of each other. - View Dependent Claims (34)
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35. A non-transitory computer-readable medium comprising instructions that cause a programmable processor to:
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determine, with a first implantable medical device (IMD), a first electrical parameter value indicative of an impedance of an electrical path coupled to the first IMD, wherein the instructions cause the programmable processor to determine the first electrical parameter value by at least; controlling the first IMD to deliver a first electrical signal between at least two electrodes electrically connected to the first IMD; controlling the first IMD to sense a second electrical signal subsequent to initiation of the delivery of the first electrical signal; and determining the first electrical parameter value based on the first electrical signal and the second electrical signal; activate delivery of electrical stimulation to a patient by a second IMD after determining the first electrical parameter value; determine, with the first IMD, a second electrical parameter value indicative of the impedance of the electrical path while the second IMD delivers electrical stimulation; determine whether the first and second electrical parameter values are within a threshold range of each other; and generate an interference indication in response to determining the first and second electrical parameter values are not with in the threshold range of each other.
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Specification