Identifying lead insulation breaches and externalization of lead conductors
First Claim
1. An implantable medical system comprising:
- at least one implantable medical lead; and
an implantable medical device coupled to the at least one implantable medical lead, wherein the at least one implantable medical lead includes a plurality of electrodes, wherein the implantable medical device includes;
a signal generator configured to generate a test signal and deliver the test signal via a first electrode vector that includes at least one of the plurality of electrodes; and
a processor configured to obtain an electrical signal generated on the lead by delivery of the test signal and analyze the electrical signal to determine whether a lead-related condition exists, wherein the electrical signal is sensed on a second electrode vector that has at least one electrode of the plurality of electrodes different than the first electrode vector.
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Accused Products
Abstract
A technique for identifying lead-related conditions, such as insulation breaches and/or externalization of lead conductors, includes analyzing characteristics of electrical signals generated on one or more electrode sensing vectors of the lead by a test signal to determine whether a lead-related condition exists. The characteristics of the electrical signals induced on the lead by the test signal may be significantly different on a lead having an insulation breach or externalized conductor than on a lead not having such lead-related conditions. As such, the implantable medical device may be subject to a known test signal and analyze the signals on the lead to detect lead-related conditions.
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Citations
17 Claims
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1. An implantable medical system comprising:
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at least one implantable medical lead; and an implantable medical device coupled to the at least one implantable medical lead, wherein the at least one implantable medical lead includes a plurality of electrodes, wherein the implantable medical device includes; a signal generator configured to generate a test signal and deliver the test signal via a first electrode vector that includes at least one of the plurality of electrodes; and a processor configured to obtain an electrical signal generated on the lead by delivery of the test signal and analyze the electrical signal to determine whether a lead-related condition exists, wherein the electrical signal is sensed on a second electrode vector that has at least one electrode of the plurality of electrodes different than the first electrode vector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method comprising:
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delivering, with an implantable medical device, a test signal via a pair of electrodes from a plurality of electrodes implanted within a body of a patient, wherein the test signal is delivered via a first electrode vector that includes at least one of the plurality of electrodes; sensing, with the implantable medical device, an electrical signal induced on at least one implantable medical lead by the test signal, wherein the electrical signal is sensed on a second electrode vector that has at least one electrode of the plurality of electrodes different than the first electrode vector; and analyzing, with the implantable medical device, the electrical signal sensed on the second electrode vector to determine whether a lead-related condition exists. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification