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Apparatus and methods for detecting position and migration of neurostimulation leads

  • US 8,401,665 B2
  • Filed: 04/01/2005
  • Issued: 03/19/2013
  • Est. Priority Date: 04/01/2005
  • Status: Active Grant
First Claim
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1. A method to determine whether a neurostimulation lead has migrated, comprising:

  • measuring the impedance of tissue in the vicinity of an electrode on the neurostimulation lead to establish a baseline impedance value;

    measuring the impedance of the tissue in the vicinity of the electrode at a subsequent time to establish a subsequent impedance value;

    determining whether the neurostimulation lead has migrated by comparing the subsequent impedance value to the baseline impedance value; and

    creating a trended baseline impedance value based on the baseline impedance value.

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