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Active current control using the enclosure of an implanted pulse generator

  • US 8,761,892 B2
  • Filed: 09/27/2013
  • Issued: 06/24/2014
  • Est. Priority Date: 07/01/2011
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • providing a neurostimulator that includes a stimulation circuit, an enclosure housing the stimulation circuit therein, the enclosure having at least one conductive area, and a plurality of distal electrodes coupled to the stimulation circuit through the enclosure;

    operating the stimulation circuit to energize a first subset of the distal electrodes with a first polarity;

    operating the stimulation circuit to energize a second subset of the distal electrodes with a second polarity opposite the first polarity, the second subset being different from the first subset;

    operating the stimulation circuit to energize the enclosure with one of the first and second polarities; and

    determining a perception threshold current level and a pain threshold current level at the enclosure during a calibration stage, and wherein the operating of the stimulation circuit to energize the enclosure is performed such that an electrical current at the enclosure is capped at one of;

    the perception threshold current level and the pain threshold current level.

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