Patent ID: 8721697

Claim:
Handpiece for a cosmetic, medical/therapeutic skin phototreatment device, which handpiece is connected to a power source and liquid coolant supply unit by a cable and tube connection in the device, the handpiece comprising: a shell which houses, in a removable manner, a cartridge with a window having a light source and its cooling circuit, a cap that mates with the shell and encloses the cartridge in the shell at a seating location in the shell, a light guide housed within the shell and partially extending therefrom, the light guide being connected to the light source by the window of the cartridge and having a light outlet surface to be applied to or above the surface of the skin to be treated, characterised in that the inner portions of the shell adjacent the portion of the cartridge above the portion of the light guide housed within the shell defining a base for carrying power and coolant supply conduits for the cartridge and defining a guide surface having at least one end which corresponds to the base and at least two sides which define lateral guide rails around the light guide, and the cartridge being in the form of a planar casing, one end of which carries a transverse assembly plate provided with connection members for mating with the base, and the sides of which comprise guide ribs for cooperating with the lateral rails and positioning the cartridge and guiding it for translational movement towards the seating location for insertion and for connection with the supply conduits, and for keeping it connected to the supply conduits when in the seating location.