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Proceedings Paper

Effect of varying Nd:YAG laser fiber tips on porcine dermal tissue
Author(s): Vani R. Pergadia; Sandor G. Vari; Wendy J. Snyder; J. Timothy Duffy; Andrew B. Weiss; Michael C. Fishbein; Reem Thomas; Wei-Qiang Shi; Kevin J. Tausend; Warren S. Grundfest
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Paper Abstract

We evaluated the effect of the 600 micrometers bare (flat tip) and 600/100 micrometers conical tip fibers on porcine skin. We compared their effect in both the continuous-wave (cw) and pulsed (P) modes (20 ms ON/OFF) at 20 W to that of the electrocautery at 100 W in the pure and blend 3 modes. On 11 farmer pigs, 6 cuts were made for each parameter combination. The samples were processed for histological evaluation. The cutting depth, cutting width, and total thermal damage (carbonization, coagulation and denaturation) were recorded for each parameter combination. The results show that the 600/100 micrometers conical fiber provides deeper resective capabilities than the 600 micrometers bare and electrocautery. In addition, the 600/100 micrometers conical tip fiber allows for narrower cuts with significantly less thermal necrosis when compared to the 600 micrometers bare and electrocautery. The results indicate that there is an advantage to using the sculptured tip fiber for creating incisions when compared to the bare fiber and electrocautery.

Paper Details

Date Published: 15 February 1994
PDF: 7 pages
Proc. SPIE 2086, Medical Applications of Lasers, (15 February 1994); doi: 10.1117/12.169147
Show Author Affiliations
Vani R. Pergadia, Cedars-Sinai Medical Ctr. (United States)
Sandor G. Vari, Cedars-Sinai Medical Ctr. (United States)
Wendy J. Snyder, Cedars-Sinai Medical Ctr. (United States)
J. Timothy Duffy, Cedars-Sinai Medical Ctr. (United States)
Andrew B. Weiss, Cedars-Sinai Medical Ctr. (United States)
Michael C. Fishbein, Cedars-Sinai Medical Ctr. (United States)
Reem Thomas, Cedars-Sinai Medical Ctr. (United States)
Wei-Qiang Shi, Cedars-Sinai Medical Ctr. (United States)
Kevin J. Tausend, Heraeus Surgical (United States)
Warren S. Grundfest, Cedars-Sinai Medical Ctr. (United States)


Published in SPIE Proceedings Vol. 2086:
Medical Applications of Lasers

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