Endotracheal tubes: model calculation for heat distribution in the Rusch Lasertubus and a metallic tube

Hans-Jochen Foth; Adriaen Postel

doi:10.1117/12.312285

1 July 1998 Endotracheal tubes: model calculation for heat distribution in the Rusch Lasertubus and a metallic tube

Hans-Jochen Foth, Adriaen Postel

Proceedings Volume 3245, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems VIII; (1998) https://doi.org/10.1117/12.312285
Event: BiOS '98 International Biomedical Optics Symposium, 1998, San Jose, CA, United States

Abstract

In earlier experiments it was shown that the laser resistance of a composite tube (Rusch, Lasertubus) is high enough to withstand power densities of up to 10⁶ W/cm² for exposure times up to 120 seconds, while the metallic tube ('Laser-Flex^TM', Mallinckrodt) got destroyed within some seconds at several 1000 W/cm². The reason for the high laser resistance of the composite tube was explained by a cooling mechanism due to vaporization water stored in the moistened foam which covers the outside of this tube. This model was checked by measuring the laser induced temperatures of the tubes by an IR camera and compare these results with model calculation carried out by the method of finite elements.

Citation Download Citation

Hans-Jochen Foth and Adriaen Postel "Endotracheal tubes: model calculation for heat distribution in the Rusch Lasertubus and a metallic tube", Proc. SPIE 3245, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems VIII, (1 July 1998); https://doi.org/10.1117/12.312285

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