Comparison of CO2 laser effects on nasal mucosa tissue using either clad or unclad silver halide optical fiber delivery system

Ari DeRowe; Shaul Shalem; E. Rauchverger; Dov Ophir; Abraham Katzir

doi:10.1117/12.184940

7 September 1994 Comparison of CO2 laser effects on nasal mucosa tissue using either clad or unclad silver halide optical fiber delivery system

Ari DeRowe, Shaul Shalem, E. Rauchverger, Dov Ophir, Abraham Katzir

Author Affiliations +

Proceedings Volume 2128, Laser Surgery: Advanced Characterization, Therapeutics, and Systems IV; (1994) https://doi.org/10.1117/12.184940
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

Functional endoscopic sinus surgery (FESS) utilizing laser energy delivered by optical fibers shows promising results. Due to high absorbance in tissue, pulsed CO₂ laser energy (10.6 micrometers ) has the theoretical advantage of causing minimal damage to the area surrounding the spot of vaporized tissue. However, conventional optical fibers are not capable of transmitting in this mid IR region. Unclad optical fibers made by extrusion of silver halide crystals are capable of transmitting CO₂ laser energy but their 0.9 mm diameter and output beam divergence results in less than desirable power density. We recently developed a silver halide optical fiber consisting of core and cladding, which can transmit CO₂ laser energy with lower divergence and an increase in the power density delivered to tissue. This preliminary study presents the histological effects on tissue of CO₂ laser energy, delivered through a clad silver halide optical fiber. Higher ablation rate and less circumferential damage to tissue have been observed.

Citation Download Citation

Ari DeRowe, Shaul Shalem, E. Rauchverger, Dov Ophir, and Abraham Katzir "Comparison of CO2 laser effects on nasal mucosa tissue using either clad or unclad silver halide optical fiber delivery system", Proc. SPIE 2128, Laser Surgery: Advanced Characterization, Therapeutics, and Systems IV, (7 September 1994); https://doi.org/10.1117/12.184940

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