Materials and constructions to improve the laser resistance of medical equipment

Hans-Jochen Foth

doi:10.1117/12.275246

2 May 1997 Materials and constructions to improve the laser resistance of medical equipment

Hans-Jochen Foth

Proceedings Volume 2974, Laser and Noncoherent Ocular Effects: Epidemiology, Prevention, and Treatment; (1997) https://doi.org/10.1117/12.275246
Event: BiOS '97, Part of Photonics West, 1997, San Jose, CA, United States

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.

Citation Download Citation

Hans-Jochen Foth "Materials and constructions to improve the laser resistance of medical equipment", Proc. SPIE 2974, Laser and Noncoherent Ocular Effects: Epidemiology, Prevention, and Treatment, (2 May 1997); https://doi.org/10.1117/12.275246

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