Patent ID: 9044548
Filing Date: 2015-06-02
Classification: A61M

Abstract:
1. A delivery device for delivering a fluid medicament, comprising: A cartridge-holder for supporting a cartridge containing the fluid medicament to be delivered, A housing having the cartridge-holder coupled to a distal end, the housing further comprising: wherein rotation of the piston rod guide and the nut member relatively to each other drives the piston rod in the longitudinal direction, and wherein the cartridge-holder is connected to the housing in a way allowing rotation and operationally coupled to the piston rod drive such that when the cartridge-holder and the housing are rotated relative to each other without axial displacement, the piston rod guide or the nut member are rotated whereby the piston rod is driven in the longitudinal and distal direction in order to expel a predetermined air shot dose, and wherein the relative rotational movement between the cartridge-holder and the housing is limited such that the size of the air-shot dose is predetermined by this limitation.