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Proceedings Paper

Materials and constructions to improve the laser resistance of medical equipment
Author(s): Hans-Jochen Foth
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Paper Abstract

In laser surgery power densities of 103 W/cm2 are used for tissue vaporization or 106 W/cm2 and more for photoablation. These densities are harmful to endotracheal tubes or other devices which are used in a close distance to the laser beam. The laser resistance of endotracheal tubes was measured under the exposure of various lares in the UV, the visible and the IR wavelength range. The laser induced temperatures of the tube materials were measured by an IR camera. It is discussed which physical processes of light material interaction cause heat and how this heat deposition is compensated by cooling processes to keep the temperature rise in an acceptable range. The experimental observation can be well described by the physical properties of the materials and their composition.

Paper Details

Date Published: 2 May 1997
PDF: 11 pages
Proc. SPIE 2974, Laser and Noncoherent Ocular Effects: Epidemiology, Prevention, and Treatment, (2 May 1997); doi: 10.1117/12.275246
Show Author Affiliations
Hans-Jochen Foth, Univ. Kaiserslautern (Germany)

Published in SPIE Proceedings Vol. 2974:
Laser and Noncoherent Ocular Effects: Epidemiology, Prevention, and Treatment
Bruce E. Stuck; Michael Belkin M.D., Editor(s)

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