Patent ID: 7407494

Claim:
Device for delivery of medicament comprising a main housing, a container including at least two compartments, wherein each compartment contains a component of the medicament to be injected, and arranged to be connected to a patient delivery means, a longitudinally movable piston and a spring arrangement acting on the piston and capable of exerting a force on the components, a first holding means arranged and capable of holding the piston in a force-loaded state, first activator means capable of acting on the first holding means for releasing the piston a certain first distance, wherein the force from the spring arrangement causes the piston to move the first distance, allowing the compartments to communicate with each other and the components to mix, a second holding means capable of stopping the movement of the piston when it has moved the first distance after one activation of the first activator means and holding the piston and the spring arrangement in that position, and dose adjusting means arranged and capable of interacting with the second holding means for adjusting a predetermined dose which corresponds to a second distance to be moved by the piston, wherein a second activator means is capable of acting on the second holding means for further releasing the piston, and wherein, upon a subsequent activation of the first activator means, the force from the spring arrangement causes the piston to move the second distance and eject the predetermined dose through the patient delivery means.