Treatment of pigmented tissues using optical energy

Details Treatment of pigmented tissues using optical energy Treatment of pigmented tissues using optical energy

A - Human Necessities

61

B

A61B 18/18 (2006.01) A61B 18/20 (2006.01) A61K 41/00 (2006.01) A61N 5/06 (2006.01) A61N 5/067 (2006.01)

Patent

CA 2339252

This invention is a method, and apparatus for selectively photo-bleaching or killing pigmented tissues by photochemically converting pigments in the tissues using light (82), and specifically two photon excitation. Photo-toxic products thereby produced then kill pigmented cells. Hyperthermia or an exogenous agent can also be added to augment efficacy. The present invention is also directed to selective thermal destruction of pigmented tissues using related optical means.

Cette invention porte sur un procédé et un appareil de "photobleaching" ou élimination de manière sélective de tissus pigmentés en transformant les pigments des tissus photochimiquement par la lumière (82), et de manière spécifique par l'excitation de deux photons. Les produits phototoxiques ainsi obtenus éliminent ensuite les cellules pigmentées. L'hyperthermie ou un agent exogène peuvent être également utilisés pour accroître l'efficacité de ce procédé. Cette invention porte également sur la destruction thermique sélective de tissus pigmentés à l'aide d'un dispositif optique correspondant.

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