Abstract: The disclosure relates to a nozzle for a device for the dermo-cosmetic treatment of dark skin spots by cyto-selective cryotherapy comprising a spray jet supplied by a tank of pressurised liquified cryogenic gas. The nozzle comprises an upper ring for connecting to a shell, extended by a central body of which the side wall which narrows downwards has longitudinal openings and delimits a gas expansion chamber communicating with a frustoconical dispersal conduit arranged inside an end piece to be applied to the skin and opening to the outside through a discharge port.

Abstract: The disclosure relates to a nozzle for a device for the dermo-cosmetic treatment of dark skin spots by cyto-selective cryotherapy comprising a spray jet supplied by a tank of pressurised liquified cryogenic gas. The nozzle comprises an upper ring for connecting to a shell, extended by a central body of which the side wall which narrows downwards has longitudinal openings and delimits a gas expansion chamber communicating with a frustoconical dispersal conduit arranged inside an end piece to be applied to the skin and opening to the outside through a discharge port.

Abstract: The invention relates to a method for cosmetically treating dark spots on the skin, wherein said method is intended for eliminating at least one of said dark spots located in a region of the hand, the face, the limbs or the chest area of a person suffering from such skin hyperpigmentation, characterised in that said method includes a step of applying a spray of cryogenic fluid to said region, which brings the skin temperature to a temperature of between ?4° C. and ?15° C. for a consecutive application period of from 2 to 10 seconds, in order to selectively act on the melanocytes, and to a device for carrying out said method.

Abstract: The invention relates to a method for cosmetically treating dark spots on the skin, wherein said method is intended for eliminating at least one of said dark spots located in a region of the hand, the face, the limbs or the chest area of a person suffering from such skin hyperpigmentation, characterised in that said method includes a step of applying a spray of cryogenic fluid to said region, which brings the skin temperature to a temperature of between ?4° C. and ?15° C. for a consecutive application period of from 2 to 10 seconds, in order to selectively act on the melanocytes, and to a device for carrying out said method.

Abstract: A wireless communication sniffer including: a packet identification module; a channel modeler; single-channel and multi-channel equalization matrix calculators; and an equalizer. The packet identification module identifies a packet as single-user (SU) or multi-user (MU). The channel modeler models the communication channel for the packet as either a set of single-channel or multi-channel parameters responsive to the SU and MU packet identification. The single-channel equalization matrix calculator calculates a single-channel equalization matrix using the set of single-channel parameters, responsive to an SU identification. The multi-channel equalization matrix calculator calculates a multi-channel equalization matrix using the set of multi-channel parameters, responsive to an MU identification. The equalizer equalizes the received communication packet utilizing the single-channel or multi-channel equalization matrix responsive to the SU or MU packet identification respectively.

Abstract: A device for applying a fluid to a localized and defined area including a reserve of fluid in the form of an aerosol; means for starting release of the fluid from the reserve; and an ejection nozzle having a conduit and an outlet orifice through which the fluid is ejected at a pressure higher than atmospheric pressure in a controlled and directed manner as regards a diameter of the application area, the fluid having a boiling point equal to or lower than ?20° C., and a latent heat of evaporation equal to or lower than 200 kJ/kg.

Abstract: A device for application of a fluid to an area to be treated including a reservoir of fluid contained in an aerosol and maintained in a device in the form of a casing, and means for triggering release of the fluid from the reservoir via an ejection nozzle, wherein means of triggering release of the fluid are coupled with a time system controlling duration of release of the fluid.

Abstract: The invention concerns an automatic fluid dispensing device comprising a container, a push-button, a plurality of springs, at least one cam, a plunger, and an aerosol containing the fluid to be dispensed. The invention is characterized in that it further comprises a sealed pressure chamber provided with at least one outlet for releasing the pressure from the pressure chamber when the latter is higher than atmospheric pressure, the compression of the push-button acting, via the cam of the plunger to increase the pressure in said chamber acting on the aerosol so that it delivers the fluid during a predetermined time. The invention also concerns a method using said device.