DIAGNOSIS OF LEAD FRACTURE AND CONNECTION PROBLEMS
First Claim
1. A method comprising:
- measuring a plurality of impedance values of an implantable medical lead;
comparing each of the impedance values to a threshold;
identifying at least one of the plurality of impedance values greater than the threshold as an increased impedance value;
determining a timing of the increased impedance value; and
automatically selecting between a diagnosis of a lead fracture or a diagnosis of a lead connection problem based on the timing of the increased impedance value.
1 Assignment
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Accused Products
Abstract
Techniques for diagnosing lead fractures and lead connection problems are described. One or more medical leads may be coupled to an implantable medical device (IMD) to position electrodes or other sensors at different locations within a patient than the IMD. The IMD may include a lead diagnostic module configured to diagnose problems with a coupled lead and automatically select between a lead fracture problem and a lead connection problem based on the diagnosis. The diagnosis of either lead fracture problems or lead connection problems may be based on a timing of an increased impedance value with respect to connection of the lead to the IMD, a return to baseline impedance values after the increased impedance value, an abrupt rise of the increased impedance value, maximum impedance values, or oversensing. An external device may present the diagnosis to a user to facilitate appropriate corrective action.
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Citations
28 Claims
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1. A method comprising:
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measuring a plurality of impedance values of an implantable medical lead; comparing each of the impedance values to a threshold; identifying at least one of the plurality of impedance values greater than the threshold as an increased impedance value; determining a timing of the increased impedance value; and automatically selecting between a diagnosis of a lead fracture or a diagnosis of a lead connection problem based on the timing of the increased impedance value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system comprising:
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an implantable medical device that measures a plurality of impedance values of an implantable medical lead coupled to the implantable medical device; and a lead diagnostic module configured to; compare each of the impedance values to a threshold; identify at least one of the plurality of impedance values greater than the threshold as an increased impedance value; determine a timing of the increased impedance value; and automatically select between a diagnosis of a lead fracture or a diagnosis of a lead connection problem based on the timing of the increased impedance value. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A system comprising:
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means for measuring a plurality of impedance values of an implantable medical lead; means for comparing each of the impedance values to a threshold; means for identifying at least one of the plurality of impedance values greater than the threshold as an increased impedance value; means for determining a timing of the increased impedance value; and means for automatically selecting between a diagnosis of a lead fracture or a diagnosis of a lead connection problem based on the timing of the increased impedance value. - View Dependent Claims (28)
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Specification