Patent ID: 7789858

Claim:
A device for administering a fluid product, comprising: a product container configured to accommodate the fluid product to be administered, said product container comprising an opening at a front end and a product stopper movable relative to the product container at a rear end; a fluid reservoir for accommodating a drive fluid; a drive means operatively coupled to the fluid reservoir; a pressure chamber operatively coupled to the product stopper; and a connecting means for forming a fluid connection between the fluid reservoir and the pressure chamber, said connecting means comprising a first state and a second state, wherein the fluid connection is closed in the first state, and the fluid connection is opened in the second state such that the fluid connection is open to the drive fluid; wherein the connecting means forms a flow section of the fluid connection which exhibits a maximum flow resistance in the fluid connection; wherein, in the opened, second state, the drive means acts on the fluid reservoir in such a way that the pressure chamber is charged with pressure, which acts on the product stopper, and the product is discharged from the product container; and wherein when the product container is inserted into the device, the connecting means is activated in such a way that the fluid connection is moved to the second, open state.