Apparatus and method for determining the relative position and orientation of neurostimulation leads

  • US 7,853,330 B2
  • Filed: 11/12/2007
  • Issued: 12/14/2010
  • Est. Priority Date: 12/04/2001
  • Status: Active Grant
First Claim
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1. A method of performing a medical procedure using a plurality of electrodes implanted within a patient, comprising:

  • measuring a first monopolar electrical impedance between a first one of the electrodes and a return or reference electrode;

    measuring a second monopolar electrical impedance between each of at least one of the electrodes and the return or reference electrode;

    measuring a bipolar electrical impedance between the first one of the electrodes and each of the at least one electrode;

    determining the amplitude of a field potential at each of at least one of the electrodes based on the measured first monopolar electrical impedance, each of the second monopolar electrical impedances, and each of the measured bipolar electrical impedances; and

    determining the relative positions of the electrodes based on each of the determined field potential amplitudes.

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