Transformation of unwanted tissue by deep laser heating of water

Surgery – Instruments – Light application

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606 2, 606 3, A61N 506

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active

058975497

ABSTRACT:
A process for treating relatively deep formations of undesirable sub-epidermal tissue by heating water in the formations with a laser to denature proteins therein. In an exemplary embodiment, a laser beam is operated to irradiate a target region of highly vascularized dermal tissue in a blood-circulating living being, such as a human. The laser light preferably has a wavelength of about 1.45-1.68 .mu.m. This operating parameter provides the laser beam with a low enough water absorption coefficient to facilitate adequate penetration in to the target area while still providing enough energy to heat water to a temperature capable of spatially conforming vascularized tissue in the target area. Treatment pursuant to the invention may be applied to highly vascular regions of sub-epidermal tissue (such as strawberry hemangioma, spider veins, telangiectasia, karposi's sarcoma, and the like), as well as regions of dermis collagen mechanically damaged due to various reasons (such as frequent muscular contraction, burning, traumatic irritation, worsening of mechanical damage due to environmental exposure, etc.).

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