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Proceedings Paper

Effects of pulsed lasers on hard biological tissue
Author(s): Renate Jahn; Andreas Bleckmann; Edwin W. Duczynski; Hans-Joachim von der Heide; Guenter Huber; Karl-Heinz Jungbluth; Werner Lierse; Walter Neu; Bert Struve
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Paper Abstract

The interaction of various pulsed lasers with meniscus and bone of freshly slaughtered bovines and pigs was examined. Our aim was to find lasers useful for accident surgical operations (e.g. bone or callus dystopy inside joints or nearby important vessels or nerves after fractures). Laser wavelengths of the UV- and infrared spectral range were investigated: XeCl- excimer lasers (wavelength 308 nm, pulse duration 28 ns, 60 ns, 300 ns) Nd:YAG (1.06 micrometers , 400 microsecond(s) ), Tm:YAG (2.01 micrometers , 400 microsecond(s) ), Ho:YAG (2.12 micrometers , 400 microsecond(s) ), CrEr:YSGG (2.79 micrometers , 400 microsecond(s) ), and Er:YAG (2.94 micrometers , 400 microsecond(s) ). The excimer laser radiation was guided by a tapered fused silica fiber, whereas for all other lasers the tissue samples were positioned in the focus of a lens with 100 mm focal length. Ablation rates were determined by perforating samples of defined thickness, and the effects of laser ablation on tissue were controlled macroscopically, by light microscopy and by scanning electron microscopy.

Paper Details

Date Published: 7 July 1993
PDF: 11 pages
Proc. SPIE 1882, Laser-Tissue Interaction IV, (7 July 1993); doi: 10.1117/12.147674
Show Author Affiliations
Renate Jahn, Univ. of Hamburg (Germany)
Andreas Bleckmann, Univ. of Hamburg (Germany)
Edwin W. Duczynski, LTI Lasertec International GmbH (Germany)
Hans-Joachim von der Heide, LTI Lasertec International GmbH (Germany)
Guenter Huber, Univ. of Hamburg (Germany)
Karl-Heinz Jungbluth, Univ. of Hamburg (Germany)
Werner Lierse, Univ. of Hamburg (Germany)
Walter Neu, Laser-Lab. Goettingen e.V. (Germany)
Bert Struve, LTI Lasertec International GmbH (Germany)

Published in SPIE Proceedings Vol. 1882:
Laser-Tissue Interaction IV
Steven L. Jacques; Abraham Katzir, Editor(s)

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