Patent ID: 6109479
Filing Date: 2000-08-29
Classification: A61M,B05B

Abstract:
A dispensing device (10) comprising a container (15) for liquid to be dispensed and initially closed at one end by a frangible seal, an outlet nozzle (22) including means to break up a flow of liquid under pressure into a spray, a piston (18) for forcing liquid out of the container (15) under pressure and through the nozzle (22) and drive means (11) for moving the piston (18) a predetermined distance to dispense a predetermined quantity of liquid from the container (15) in which the nozzle (22) includes a piercing portion (25) extending adjacent to the frangible seal of the container (15), characterised in initial depression of the nozzle (22) being used to break the seal by axial movement of the piercing portion (25).