The present invention relates to a device for delivering medicament, comprising a container (12) arranged to contain medicament, which container further comprises an opening arranged to expel medicament from the container, pressure means (16, 18) arranged to exert pressure on the medicament inside the container (12) for expelling a certain predetermined quantity of the medicament through the opening, driving means (26, 42) for driving said pressure means (16, 18), and activation means (46) for activating said driving means (26, 42) wherein said device comprises pressure release means (20) which are adapted, arranged and designed such that, when the predetermined dose has been expelled through the opening, the pressure on the medicament is released.
