| 摘要 |
<p>Dermatological laser treatment methods, devices that employ air convection (air flow) enhanced cryogen spray cooling to reduce the risk of non-specific thermal injury of the epidermis, and underlying dermis during laser procedures such as wrinkle, hair or tattoo removal, or treatment of port wine stains are provided. A preferred device (10) comprises a directed airflow device (18) (air jet), a cryogen delivery device (16) and a laser delivery optics (14). A preferred method includes using the device to cool a designated outer surface portion of living skin by spraying a liquid cryogen onto the surface, to form a cooling film before or during laser actuation.</p> |
