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Proceedings Paper

Temperature monitoring and control of CO2 laser tissue welding in the urinary tract using a silver halide fiber optic radiometer
Author(s): Ofer Shenfeld; Ophir Eyal; Benad Goldwasser; Abraham Katzir
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Paper Abstract

Laser welding of tissues is an experimental surgical technique for the binding of tissues. The difficulty in the clinical implementation of this technique arises from the difficulty in defining the optimal conditions under which a satisfactory weld is formed. Temperature measurements of laser irradiated tissues are difficult to perform and experiments have produced conflicting results. Fiber optic radiometry allows temperature measurement of laser irradiated tissues by remote sensing of emitted infra red (IR) radiation. We developed an IR radiometer capable of accurate temperature measurements (+/- 0.2 degree(s)C). Utilizing this radiometer for the monitoring and control of CO2 laser irradiated tissues we achieved temperature control of +/- 2.5 degree(s)C of tissues during welding. This system was used to perform laser welds on the urinary bladders of rats. The strength of the welds was recorded for different welding temperatures, and maximal strength was obtained at 55 degree(s)C and 12 sec.

Paper Details

Date Published: 1 July 1993
PDF: 12 pages
Proc. SPIE 1876, Lasers in Otolaryngology, Dermatology, and Tissue Welding, (1 July 1993); doi: 10.1117/12.147032
Show Author Affiliations
Ofer Shenfeld, Tel Aviv Univ. and Sheba Medical Ctr. (Israel)
Ophir Eyal, Tel Aviv Univ. and Sheba Medical Ctr. (Israel)
Benad Goldwasser, Tel Aviv Univ. and Sheba Medical Ctr. (Israel)
Abraham Katzir, Tel Aviv Univ. and Sheba Medical Ctr. (Israel)


Published in SPIE Proceedings Vol. 1876:
Lasers in Otolaryngology, Dermatology, and Tissue Welding
R. Rox Anderson; Lawrence S. Bass; Stanley M. Shapshay; John V. White; Rodney A. White, Editor(s)

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