Optimization of Line Cut Strategy for Bone Tissue Ablation Using Short-Pulsed CO$_2$ Laser Based on Thermal Relaxation

Zhang, Yaokun; Burgner, Jessica; Raczkowsky, Jörg; Wörn, Heinz
Jahrestagung der Deutschen Gesellschaft für Computer- und Roboterassistierte Chirurgie e.V., pp. 3–7, 2010
Optimization of Line Cut Strategy for Bone Tissue Ablation Using Short-Pulsed CO$_2$ Laser Based on Thermal Relaxation

Abstract


In order to keep a low degree of thermal injury to the target tissue, the traditional line cut strategy of laser osteotomy has limited the applied pulse repetition rate to be under certain threshold, which results in a very long temporal duration of the cutting procedure. Based on the analysis of the post-pulse thermal relaxation behavior inside the tissue surrounding the ablation crater, a “jumping cut strategy” is developed in this paper. Experimental evaluation has shown that this new strategy is able to accelerate the cutting procedure as well as reduce the thermal injury to the tissue at the same time. Key Words: laser ablation, thermal relaxation, hard tissue processing

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