Patent ID: 8066698

Claim:
A cryosurgery device comprising: an aerosol container for holding a refrigerant, the container including a valve and a valve stem extending out from the valve and the container; an actuation cup comprising a main body having a generally annular outer wall which is partially closed at its lower end by a bottom wall, the bottom wall having an upper surface and a lower surface and a central opening with a first inner diameter; an actuator seated on the valve stem in order to depress the valve stem and release the refrigerant from the container, the actuator including an outlet tube for receiving released refrigerant from the container, the outlet tube having the same first inner diameter as the actuation cup; wherein said actuator includes an inlet tube connected with the main body and adapted to receive the valve stem therein and comprising a second inner diameter which is greater than the first inner diameter of the outlet tube to form a shoulder at the lower surface of the bottom wall; and said main body connecting together said inlet tube and said outlet tube in fluid communication with each other, the main body including an arrangement for limiting insertion of the valve stem into the inlet tube; and an actuating surface against which at least one key engages, such that application of said pressure to the actuating surface causes said actuator to move such that the shoulder engages and depresses the valve stem to release the refrigerant; a hub mounted on the container, the hub including at least one opening therein and a first aligning arrangement; an applicator tube mounted to the hub in fluid communication with the outlet tube of the actuator; a porous tip mounted to a distal end of the applicator tube for receiving the refrigerant; and a separate base having a central opening for receiving the hub and applicator tube therein, the base including at least one key and a second aligning arrangement for cooperating with said first aligning arrangement such that the at least one key can enter the at least one opening in the hub to engage and apply pressure to the actuator to cause the actuator to depress the stem and release the refrigerant.