Apparatus for interstitial laser therapy

Details Apparatus for interstitial laser therapy Apparatus for interstitial laser therapy

1995-06-07

1996-10-29

Jackson, Gary

Surgery

Instruments

Light application

A61B 1732

Patent

active

055692400

ABSTRACT:
Apparatus and method for locally generating hyperthermia-induced coagulation necrosis in tissue masses located deeply within the body of a subject. High energy laser radiation is introduced into the target tissue mass using an optical fiber inserted into a metallic cannula through which a suitable fluid is coaxially flowed. A combination of the fluid flow and the slow withdrawal of the cannula/fiber combination during therapy protects the optical fiber tip, thereby preserving its energy transmission characteristics. After establishment of a small fluid bolus in front of the fiber tip, fluid flow which is approximately proportionate to the laser energy employed has been found to be most effective in this regard.

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