Tissue cooling rod for laser surgery

Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Light application

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606 9, 606 20, A61N 2100

Patent

active

060598204

ABSTRACT:
A laser treatment device and process with controlled cooling. The device contains a rod with high heat conduction properties, which is transparent to the laser beam. A surface of the rod is held in contact with the tissue being treated and other surfaces of the rod are cooled by the evaporation of a cryogenic fluid. The cooling is coordinated with the application of the laser beam so as to control the temperatures of all affected layers of tissues. In a preferred embodiment useful for removal of wrinkles and spider veins, the rod is a sapphire rod. A cryogenic spray cools the walls. A first surface is in contact with the skin surface being treated and an opposite surface is contained in an anticondensation oil chamber that is optically connected to a laser beam delivering fiber optic cable. In this preferred embodiment the temperature of the rod is monitored with a thermocouple which provides a feedback signal to a processor which controls the cooling and the laser power to provide proper regulation of temperatures at all affected tissue layers.

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patent: 5820626 (1998-10-01), Baumgardner
patent: 5902299 (1999-03-01), Jayaraman

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