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Science 13 June 1986:
Vol. 232. no. 4756, pp. 1421 - 1422
DOI: 10.1126/science.3715454
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Articles

Science, Vol 232, Issue 4756, 1421-1422
Copyright © 1986 by American Association for the Advancement of Science

articles

Laser-induced alteration of collagen substructure allows microsurgical tissue welding

R Schober, F Ulrich, T Sander, H Durselen, and S Hessel

Tissue welding is a potentially important biomedical application of laser technology. The structural alterations basic to this phenomenon were studied in experimental repair of lesions of the rat carotid artery and sciatic nerve. A modified neodymiumdoped yttrium-aluminum-garnet laser operating at a wavelength of 1.319 micrometers was used in conjunction with conventional suture techniques. Histological and fine-structural analysis revealed a homogenizing change in collagen with interdigitation of altered individual fibrils that appeared to be the structural basis of the welding effect.


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