PATTERNED THERMAL TREATMENT USING PATTERNED CRYOGEN SPRAY AND IRRADIATION BY LIGHT

摘要

A spray of cryogen (131) is patterned to create a pattern of cooled regions on a target tissue (160) for cosmetic dermatological treatment. In one embodiment, the cryogen is patterned using a heated mask. An optical source (120) is configured to irradiate the target tissue (160) in a region at least partially overlapping the cooled regions to create a pattern of treatment zones (163). A control unit (110) adjusts the timing of between the cryogen (131) and optical pulses (125).