DRUG DELIVERY DEVICE, ASSEMBLY FOR A DRUG DELIVERY DEVICE AND METHOD FOR SETTING UP A DRUG DELIVERY DEVICE

摘要

The instant application is directed to an assembly for a drug delivery device which is arranged to operate in two distinct modes, a priming mode starting from a pre-priming state and a dispense mode operating in a post-priming state, and a drug delivery device comprising this assembly. The assembly comprises a dose member (2), an actuating member (3) and a piston rod (7) which is configured to act on a bung (8) of an assembled cartridge (9) containing the drug. In the pre-priming state the actuating member (3) is configured to be moved by a user such that the movement of the actuating member (3) causes a movement of the dose member (2) and such that the movement of the dose member (2) causes a movement of the piston rod (7). In the post-priming state the dose member (2) is configured to be moved by a user without causing a movement of the actuating member (3) in order to perform a set and dispense action of the drug delivery device.