In-vitro ablation of fibrocartilage by XeCl excimer laser

Martin Buchelt M.D.; Thanassis Papaioannou; Michael C. Fishbein M.D.; Werner Peters M.D.; Clain Beeder; Warren S. Grundfest M.D.

doi:10.1117/12.43893

1 July 1991 In-vitro ablation of fibrocartilage by XeCl excimer laser

Martin Buchelt M.D., Thanassis Papaioannou, Michael C. Fishbein M.D., Werner Peters M.D., Clain Beeder, Warren S. Grundfest M.D.

Author Affiliations +

Proceedings Volume 1420, Optical Fibers in Medicine VI; (1991) https://doi.org/10.1117/12.43893
Event: Optics, Electro-Optics, and Laser Applications in Science and Engineering, 1991, Los Angeles, CA, United States

Abstract

A 308 nm excimer laser was employed for ablation of human fibrocartilage. Experiments were conducted in vitro. The tissue response was investigated with respect to dosimetry (ablation rate versus radiant exposure) and thermal effect (thermographic analysis). Irradiation was performed via a 600 um fiber, with radiant exposures ranging between 20mj/mm2 and 80mj/mm2, at 20Hz. The ablation rates were found to range from 3um/pulse to 80um/pulse depending on the radiant exposure and/or the applied pressure on the delivery system. Thermographic analysis, during ablation, revealed maximum average temperatures of about 65 degree(s)C. Similar measurements performed, for the purpose of comparison, with a CW Nd:YAG and a CW CO2 laser showed higher values, of the order of 200 degree(s)C.

Citation Download Citation

Martin Buchelt M.D., Thanassis Papaioannou, Michael C. Fishbein M.D., Werner Peters M.D., Clain Beeder, and Warren S. Grundfest M.D. "In-vitro ablation of fibrocartilage by XeCl excimer laser", Proc. SPIE 1420, Optical Fibers in Medicine VI, (1 July 1991); https://doi.org/10.1117/12.43893

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