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Tumor tissue characterization apparatus and method

  • US 5,349,954 A
  • Filed: 07/23/1993
  • Issued: 09/27/1994
  • Est. Priority Date: 07/23/1993
  • Status: Expired due to Term
First Claim
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1. A tissue diagnostic instrument, comprising:

  • a needle having a hollow shaft, a tip on one end of said shaft, and a base on the other end of said shaft;

    an optical fiber positioned within said shaft for delivering light of varying wavelengths in a predetermined range to a desired region of tissue through said tip; and

    a photodetector mounted in said shaft and having a light sensitive surface facing outward from a side of said shaft for detecting back-scattered light from said desired region of tissue.

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