Laser resistance and clinical practicability of a new compound endotracheal tube

Hans-Jochen Foth; Karl Hoermann M.D.

doi:10.1117/12.197604

23 December 1994 Laser resistance and clinical practicability of a new compound endotracheal tube

Hans-Jochen Foth, Karl Hoermann M.D.

Proceedings Volume 2327, Medical Applications of Lasers II; (1994) https://doi.org/10.1117/12.197604
Event: International Symposium on Biomedical Optics Europe '94, 1994, Lille, France

Abstract

The danger of ignition of ventilation tubes during CO₂-laser surgery in the larynx region has been described several times in the literature. It was found that tubes of polymers, like PVC, have a low ignition threshold and, even worse, evaporate toxic gases when they were irradiated accidentally by the laser beam. So far, a pure metal tube was described as the safest endotracheal tube. A newly developed compound tube built up by a rubber tube surrounded by an ondulated silver foil and a layer of white Merocel^R-foam, was tested for its laser stability against various types of lasers, like CO₂ Holmium:YAG, Nd:YAG, Ar⁺ and excimer laser. The damage threshold of this tube at approximately 3 (DOT) 10⁶ W/cm² is significantly higher than the damage threshold of the metal tube and far above the power density used for coagulation or ablation of tissue. Beside these experimental results, this contribution describes the experiences which have been obtained with this tube in the clinical routine.

Citation Download Citation

Hans-Jochen Foth and Karl Hoermann M.D. "Laser resistance and clinical practicability of a new compound endotracheal tube", Proc. SPIE 2327, Medical Applications of Lasers II, (23 December 1994); https://doi.org/10.1117/12.197604

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