7 September 1994 Comparison of CO2 laser effects on nasal mucosa tissue using either clad or unclad silver halide optical fiber delivery system
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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.
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Ari DeRowe, Ari DeRowe, Shaul Shalem, Shaul Shalem, E. Rauchverger, E. Rauchverger, Dov Ophir, Dov Ophir, Abraham Katzir, 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); doi: 10.1117/12.184940; https://doi.org/10.1117/12.184940
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