Patent ID: 8376997

Claim:
Device for delivering medicament, comprising: a container arranged to contain medicament, which container further comprises an opening arranged to expel medicament from the container; pressure means arranged to exert pressure on the medicament inside the container for expelling a predetermined quantity of the medicament through the opening; driving means comprising an energy accumulating member, a nut and a driver for driving said pressure means; and activation means for activating said driving means, wherein said pressure means comprises a movable wall part arranged inside the container and a threaded plunger rod arranged to interact with said driving means for pushing said movable wall part forwardly due to force from the energy accumulating member and a threaded engagement between the plunger rod and the nut, said activation means comprises a manually operated push button arranged on the front end of the device for promoting an ergonomic handling of the device, and said activation means is capable of interacting with said driving means in a stepwise mode, such that each time said push button is depressed, said pressure means moves a step exerting pressure on the medicament inside the container and expelling a predetermined quantity of the medicament through the opening.