Surgery – Instruments – Light application
Patent
1996-09-05
2000-03-28
Peffley, Michael
Surgery
Instruments
Light application
607 89, 606 13, A61N 506
Patent
active
RE036634&
ABSTRACT:
An improved optical system for treatment of disorders of the skin, especially vascular lesions, such as Port Wine Stains. The system irradiates the skin with radiation at a predetermined wavelength and cools the skin during a predetermined time interval in coordination with delivery of the radiation. The absorption of the radiation by the skin and the change in temperature of the skin is monitored by the system and the operation of the radiation delivery system is controlled to optimize treatment of the vascular lesion. The source of irradiation is an arc lamp and the cooling system delivers a cooling gas to a lens in contact with the skin. The cooling gas can be carbon dioxide, freon, or any other appropriate gas. The lens used has a high heat conductivity and may be formed of sapphire.
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Anvari et al, "Selective cooling . . . procedures", Phys. Med. Biol., vol 40, pp. 241-252. 1995.
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