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Probe and method of use for detecting abnormal tissues

  • US 4,729,385 A
  • Filed: 07/11/1986
  • Issued: 03/08/1988
  • Est. Priority Date: 10/23/1985
  • Status: Expired due to Fees
First Claim
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1. Method of testing selected internal epithelial tissue of a subject to determine biological condition, comprising the steps of:

  • locating first and second electrodes of predetermined fixed spaced apart relation within an epithelial cavity of the subject and in contact with the selected tissue;

    locating third and fourth electrodes of predetermined constant spaced apart relation within a blood vessel of the subject closely adjacent the selected tissue;

    establishing an A. C. voltage in the range of 10 Hz to 7 KHz between the first and fourth electrodes; and

    measuring the impedance of the selected tissue located between the second and third electrodes.

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