Patent ID: 8419706

Claim:
A nasal spray device, comprising: a body ( 1 ) configured to be inserted into a nasal passage for dispensing fluid in the nasal passage and provided with a dispenser orifice ( 2 ), a reservoir ( 10 ) containing at least one dose of fluid being disposed statically in said body ( 1 ), said reservoir ( 10 ) including a cylindrical wall distinct from and disposed entirely inside the body such that the body does not define a fluid sealing surface of the reservoir, said reservoir being closed in sealed manner by a first stopper ( 20 ) and a second stopper ( 30 ), the fluid being disposed in a fluid chamber ( 11 ) formed by said first and second stoppers ( 20 , 30 ) and said cylindrical wall, opener means ( 40 ) for opening said first stopper ( 20 ), said opener means ( 40 ) being disposed statically in said body ( 1 ), actuator means ( 50 ) being connected to said second stopper ( 30 ) so as to displace said second stopper in said reservoir ( 10 ), the actuation of said second stopper ( 30 ) creating pressure in the fluid chamber ( 11 ), said pressure displacing and/or deforming said first stopper ( 20 ) towards said opener means ( 40 ), in such a manner that firstly said first stopper ( 20 ) is opened, and then fluid is expelled through said open first stopper ( 20 ) towards said dispenser orifice ( 2 ), a spray profile ( 5 ) provided upstream from said dispenser orifice ( 2 ) to dispense the fluid in the form of a fine spray; and precompression means ( 70 ) to create precompression in the reservoir ( 10 ) before said first stopper ( 20 ) is opened by said opener means ( 40 ), so as to improve the spraying of the fluid, and so as to ensure that the entire dose of fluid is dispensed, wherein said opener means for opening the first stopper comprise a hollow needle in which only one end has a sharp point, pointing away from the dispensing orifice, wherein the sharp point is formed by a bevel, and the needle has the bevel at only the first end that forms the sharp point.