Quantity change in collagen following 830-nm diode laser welding

Jing Tang; David O'Callaghan; Simone Rouy; Guilhem Godlewski M.D.; Michel Prudhomme M.D.

doi:10.1117/12.260705

3 December 1996 Quantity change in collagen following 830-nm diode laser welding

Jing Tang, David O'Callaghan, Simone Rouy, Guilhem Godlewski M.D., Michel Prudhomme M.D.

Proceedings Volume 2922, Laser Applications in Medicine and Dentistry; (1996) https://doi.org/10.1117/12.260705
Event: BiOS Europe '96, 1996, Vienna, Austria

Abstract

The actual mechanism for production of laser welding of tissue is presently unknown, but collagen plays an important role is tissue welded after laser irradiance. The quantity change in collagen extracted from the abdominal aorta of Wistar rats after tissue welding using an 830 nm diode laser was investigated. The collagen contents following repeated pepsin digestion after acetic acid extraction were determined with Sircol collagen assay. Compared with untreated aorta, the collagen content of the treated vessel was obvious decreased immediately after laser irradiation and following an initial increase on day 3, there was a peak at day 10. The results suggest that a part of collagen molecules is denatured by the heat of laser. There is an effect of stimulating collagen synthesis after laser welding with parameters used in this study.

Citation Download Citation

Jing Tang, David O'Callaghan, Simone Rouy, Guilhem Godlewski M.D., and Michel Prudhomme M.D. "Quantity change in collagen following 830-nm diode laser welding", Proc. SPIE 2922, Laser Applications in Medicine and Dentistry, (3 December 1996); https://doi.org/10.1117/12.260705

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