Patent ID: 6345737
Filing Date: 2002-02-12
Classification: A61M,B05B

Abstract:
A dispenser device for dispensing a single dose of liquid, said device comprising:a cylinder (4) containing said dose of liquid; a piston (10) which slides in sealed manner in said cylinder (4) between a storage position in which it isolates said cylinder and an actuated position; a piston actuator member (3); an outlet passage (5) for connecting said cylinder (4) to an outlet orifice (6); and a e (30) which is disposed in the outlet passage (5) for spraying the dose of liquid; said piston (10) including a through-passage (11) which is closed in sealed manner in the storage position of the piston (10) by a closure member (20), said closure member being designed to open said through-passage (11) under the effect of a predetermined pressure which is created inside the cylinder (4), so as to enable said dose of liquid to be expelled through said through-passage (11), the device being characterized in that said closure member (20) is secured to said spray nozzle (30), said spray nozzle (30) being movable between an initial position corresponding to the closed position of the closure member (20), and a final position corresponding to the open position of the closure member (20).