Abstract: The present invention relates to a drug delivery system, comprising a reservoir from which set doses are apportioned, a dose setting mechanism by which the relative position of two elements is changed by a distance proportional to a set dose, and a push button by activation of which an element is moved a distance corresponding to the distance proportional to the set dose, further comprises a working cylinder having an open end into which a plunger fits, and a closed end at which an inlet and an outlet port connect the space beneath the plunger with an inlet communicating with the reservoir and an outlet communicating with a drug delivery member, respectively. Valves means at the inlet and outlet control the passages from the reservoir to the working cylinder and from the working cylinder to the drug delivery member, respectively. The cylinder with the plunger, and the injection member are independently exchangeable, disposable parts.

Abstract: In a displacement system for controlled infusion of a liquid from a cartridge comprising a tubular vessel (1), which is at a rear end closed by a piston (3) which may be forced by a piston rod (8) moving into the vessel (1) in the axial direction thereof to press out the liquid through an outlet (2) arranged at a front end of the vessel (1), the piston rod (8) is provided as a flexible incompressible construction which is by a piston rod guide (9) behind the rear end of the cartridge deflected away from the axis of this cartridge, preferably 180.degree.. The piston rod guide (9) has a guiding track comprising a curved part and linear parts at each end of the curved part ensuring that the piston rod is guided along a length (a) in the direction of the axis of the cartridge which length (a) is longer than the distance (b) between the two axes of the piston rod parts projecting from the piston rod guide.

Abstract: The present invention relates to a dispenser for tablets, comprising a drawer element having a through going opening for the accommodation of just one tablet, which drawer element may be displaced along a narrow sidewall of a box shaped housing. A partition parallel with said sidewall bars the inlet of the opening when the dispenser is operated, and an opening serves as a dispensing opening when the drawer is displaced to align its through-going opening with the dispensing opening. The ends of the drawer are closed by trough shaped shells, the shell at the one end being at its end opposite the drawer hinged to the housing, and being at its end adjacent to the drawer hinged to the drawer, and the end of the housing adjacent to the hinged shell being obliquely cut, so that the narrow side of the housing adjacent to the hinge hinging the shell to the housing is longer than the narrow sidewall forming the sliding surface for the drawer.