IMPROVEMENTS IN AND TO METHODS AND APPARATUS FOR REMOVAL OF SKIN PIGMENTATION AND TATTOO INK

Methods and apparatus for dermatological laser treatment, e.g. for the removal of unwanted tattoos or other skin pigmentation. Removal of multiple colours with a single pulsed laser beam may be achieved using intensities in excess of about 50 GW/cm2. Methods for reducing the pain and tissue damage associated with laser tattoo removal include using a spot size of less than 2 mm with a fluence in the range 0.5-10 J/cm2. Scanning the laser beam over an area of skin to be treated allows such areas to be treated accurately with scanning patterns calculated to promote rapid dissipation of heat awayfrom treated portions of the skin. Multiple treatment rooms may be served by a single pulsed treatment laser by beam toggling, splitting or pulse-picking to minimise downtime of the laser. 一种用于皮肤激光处理、例如用于去除不需要的纹身或其他皮肤色素沉着的方法和设备。使用超过约50GW/cm2的强度可以实现用单个脉冲激光束去除多种颜色。用于减少与激光纹身去除相关联的疼痛和组织损伤的方法包括使用通量范围为0.5-10J/cm2的小于2mm的斑点尺寸。在待处理的皮肤区域上扫描激光束允许利用扫描图案来精确地治疗此类区域，所述扫描图案被计算出为促使热量从所述皮肤的被治疗部分快速消散。单个脉冲治疗激光器通过光束切换、分束或脉冲拾取光束可以为多个治疗室提供服务，以使