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Active Electrode, Bio-Impedance Based, Tissue Discrimination System and Methods of Use

  • US 20110082383A1
  • Filed: 12/07/2010
  • Published: 04/07/2011
  • Est. Priority Date: 10/20/2004
  • Status: Abandoned Application
First Claim
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1. A tissue discrimination system, comprising:

  • a sensor circuit selected from the group of a voltage sensor, a current sensor and a combination of a voltage and a current sensor;

    a waveform electrode having an area no more than approximately 10 mm2, the waveform electrode electrically coupled to the sensor circuit;

    a return electrode electronically coupled to the sensor circuit;

    a display; and

    a controller electronically coupled to the sensor circuit and display, wherein the controller is configured to;

    cause an electrical signal to be applied to the waveform electrode and the return electrode, the electrical signal having a frequency between approximately 500 Hz and approximately 2500 Hz;

    receive a signal from the sensor circuit;

    using the signal received from the sensor circuit, calculate a result useful for discriminating tissue; and

    send control signals to the display to cause the calculated result to be presented on the display.

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