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    • 3. 发明公开
    • CRYOGENIC DEVICE AND ACTUATOR ASSEMBLY THEREIN
    • EP4342401A3
    • 2024-06-26
    • EP23179325.8
    • 2019-12-20
    • Oystershell NV
    • Rossel, Bart
    • A61B18/02
    • A61B18/0218A61B2018/004720130101A61B2018/0029720130101
    • The current invention concerns a device for the topical cryotherapy of dermatological disorders, the device comprising: a housing for holding a pressurized carbon dioxide cartridge; an applicator nozzle comprising (i) an internal channel for guiding the outflow of carbon dioxide from said pressurized carbon dioxide cartridge, and (ii) an applicator surface onto which carbon dioxide ice may be formed; and an actuator mechanism for controlling an outflow of carbon dioxide from said pressurized carbon dioxide cartridge to said applicator nozzle. The invention further concerns a cryogenic applicator pen comprising an actuator assembly for controlling an outflow of a cryogenic fluid, wherein said actuator assembly comprises at least one spring leaf, wherein said spring leaf on one side bears against a ball of a ball valve and on an opposite side bears against a positioning casing bearing a needle for piercing a cryogenic fluid cartridge. In a second aspect, the invention provides an actuator assembly suitable for cryogenic device for controlling an outflow of a cryogenic fluid, wherein said actuator assembly comprises at least one spring leaf and a needle, whereby said spring leaf is bearing against a ball of a ball valve, and whereby said actuator assembly is sealed to said cryogenic device by sealing o-rings.