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Tracking system using field mapping

  • US 8,568,406 B2
  • Filed: 02/09/2012
  • Issued: 10/29/2013
  • Est. Priority Date: 10/27/2008
  • Status: Active Grant
First Claim
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1. A method comprising:

  • securing multiple sets of current injecting electrodes to one or more stable locations relative to an organ in a patient'"'"'s body;

    causing current to flow among the multiple sets of current injecting electrodes to generate a field in the organ;

    in response to current flow caused by the multiple sets of current injecting electrodes, measuring the field at each of one or more additional electrodes,determining expected signal measurements of the field inside the organ using a pre-determined model of the field, the pre-determined model of the field correlating field measurements with position coordinates; and

    determining a position of each of the one or more additional electrodes in the organ based on the measurements made by the additional electrodes and the determined expected signal measurements of the field.

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