SYSTEM AND METHOD FOR MODIFICATION AND/OR SMOOTHING OF TISSUE WITH LASER ABLATION

• Main Authors: WYNNE JAMES J, ZUPANSKI-NIELSEN DONNA S, TRZCINSKI ROBERT E, CONNORS DANIEL PATRICK, FELSENSTEIN JEROME
• Format: Patent
• Language: English
• Published: 25.07.2013
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

Disclosed is an improved system and method for efficiently removing tissue using laser ablation. A first laser emits a first laser beam with a variable first integrated fluence sufficient to ablate tissue. The first laser beam is movably positioned over one or more surfaces of the tissue and the first integrated fluence varies over different levels with position, so different thicknesses of tissue are ablated at different surface positions in order to modify the contour of the surface of the tissue. Modifications include tissue smoothing, removing, feathering, sharpening, and roughening. In one preferred embodiment the tissue is eschar that is removed, unveiling viable tissue. In alternate preferred embodiments, one or more additional lasers beams with different wavelengths, with integrated fluence sufficient to ablate tissue, are moved over the surface of the tissue until a second ablation reaches a second self-termination point, e.g., determined by affects of chemicals below the termination point that absorb the second laser beam without producing the temperature increase necessary for ablation to continue.