S. A. Prahl, S. D. Pearson, SPIE Proceedings of Laser-Tissue Interaction VIII, 2975, 245-252 (1997).
Laser tissue welding is a thermal process for binding two tissues together. Optical and thermal models exist that allow the temperatures of laser irradiated tissues to be calculated. However, a rate process model is required to relate the estimated time-temperature histories to weld strengths. This paper proposes a rate process model based on a broad range of parametric welding experiments. Aorta, intestine, and digested carotid arteries were patch welded at constant pressure using either constant temperature (3-15 min at 60-80°C) or pulsed laser heating (5 ms, 3 Hz, 5-30 pulses).
prahl97a.pdf (124 k)