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Method for determining absolute current density through an implanted electrode

  • US 4,944,301 A
  • Filed: 06/16/1988
  • Issued: 07/31/1990
  • Est. Priority Date: 06/16/1988
  • Status: Expired due to Term
First Claim
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1. A method for determining the absolute density of an electrical current passing through an electrode implanted in a body, comprising the steps of:

  • (a) applying a voltage waveform to said implanted electrode;

    (b) measuring the distortion of said waveform introduced by the non-linear I-V characteristics of the interface between said electrode and the tissue of said body; and

    (c) estimating the absolute current density of said electrical current through said electrode based on the characteristics of said distortion.

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