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Neural stimulation system providing auto adjustment of stimulus output as a function of sensed impedance

  • US 9,089,706 B2
  • Filed: 06/16/2014
  • Issued: 07/28/2015
  • Est. Priority Date: 02/12/2002
  • Status: Active Grant
First Claim
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1. A method for controlling a neurostimulation system, comprising:

  • applying electrical stimulation energy to neural tissue of a patient via at least one electrode of the neurostimulation system in accordance with a stimulation parameter;

    measuring at least two samples of an electrical parameter over time;

    computing a change in the electrical parameter by comparing the at least two samples, wherein the change in the electrical parameter is indicative of a coupling efficiency between the at least one electrode and the neural tissue;

    analyzing a lookup table that stores electrical parameter changes correlated to stimulation parameter values;

    determining a stimulation parameter value correlated to the computed electrical. parameter change based on the analysis of the look-up table; and

    automatically adjusting the value of the stimulation parameter in accordance with which the electrical stimulation energy is applied to the determined stimulation parameter value without human intervention.

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