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Apparatus for interstitial laser therapy having an improved temperature sensor for tissue being treated

  • US 5,222,953 A
  • Filed: 10/02/1991
  • Issued: 06/29/1993
  • Est. Priority Date: 10/02/1991
  • Status: Expired due to Term
First Claim
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1. Apparatus for interstitial laser therapy comprising in combination:

  • a thin cannula for insertion in a tissue mass, said cannula having a lumen extending axially between proximal and distal end portions and a distally facing central axial opening at the distal end communicating with the lumen, said lumen being adapted to receive an optical fiber for transmitting laser energy into a tissue mass in which the distal end portion of the cannula is inserted;

    a temperature sensing means secured to the outside of the distal end portion of the cannula and movable therewith to sense temperature of a tissue mass in which the distal end portion of the cannula is inserted; and

    said temperature sensing means is proximally spaced from the outside distal end of the cannula to be out of a direct line of view with said central axial opening.

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