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Proceedings Paper

Laser resistance and clinical practicability of a new compound endotracheal tube
Author(s): Hans-Jochen Foth; Karl Hoermann
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Paper 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 MerocelR-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.

Paper Details

Date Published: 23 December 1994
PDF: 8 pages
Proc. SPIE 2327, Medical Applications of Lasers II, (23 December 1994); doi: 10.1117/12.197604
Show Author Affiliations
Hans-Jochen Foth, Univ. Kaiserslautern (Germany)
Karl Hoermann, Univ. Hospital of Mannheim (Germany)


Published in SPIE Proceedings Vol. 2327:
Medical Applications of Lasers II
Stephen G. Bown; J. Escourrou; Frank Frank; Herbert J. Geschwind; Guilhem Godlewski; Frederic Laffitte; Hans H. Scherer, Editor(s)

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