Abstract: A drug delivery device for setting and dispensing doses of a liquid drug is described. The device includes a housing and a dose setting and drive mechanism with a dose setting member and a dose setting drum. The dose setting and drive mechanism is configured to perform a dose setting operation for setting a dose to be delivered by the drug delivery device by rotating the dose setting member relative to the housing and a dose delivery operation for delivering the set dose during rotation of the dose setting drum relative to dose setting member the housing. The dose setting drum includes an array of encoder features at its proximal end. The dose setting member has at least one aperture located in a proximal end surface that is coincident with at least a portion of the array of encoder features of the dose setting drum.

Abstract: A drug delivery device for setting and dispensing doses of a liquid drug. The device comprises a housing and a dose setting and drive mechanism with a dose setting member and a dose setting drum. The dose setting and drive mechanism is configured to perform a dose setting operation for selecting a dose to be delivered, and a dose delivery operation for delivering the set dose. The dose setting drum comprises a set of clutch teeth that are engagable with a mating set of teeth on the dose setting member. The clutch teeth and the mating teeth are engaged during a dose setting operation to prevent rotation therebetween and the clutch teeth and the mating teeth are disengaged during a dose delivery operation allowing relative rotation between the dose setting drum and the dose setting member. The clutch teeth are formed on an external surface of the dose setting drum.

Abstract: A cartridge assembly for use with a drug delivery device is specified. The cartridge assembly comprises a cartridge with a retention cap and a cartridge holder. According to one aspect, the cartridge and the cartridge holder may be configured to be fixed to each other in a predetermined position According to another aspect, the retention cap comprises at least one coding feature configured to affix said cartridge to said cartridge holder in the predetermined position by the mating of said coding feature with a corresponding coding feature on the cartridge holder.

Abstract: A cartridge assembly for use with a drug delivery device comprises: a cartridge holder defining an aperture therethrough, with a blocking feature and at least one holder coding feature; and a cartridge with at least one cartridge coding feature; wherein when the cartridge is inserted into the cartridge holder, the cartridge coding feature mates with the holder coding feature, moving the blocking feature or allowing the blocking feature to move.

Abstract: A cartridge assembly for use with a drug delivery device is specified. The cartridge assembly comprises a cartridge with a retention cap and a cartridge holder. According to one aspect, the cartridge and the cartridge holder may be configured to be fixed to each other in a predetermined position According to another aspect, the retention cap comprises at least one coding feature configured to affix said cartridge to said cartridge holder in the predetermined position by the mating of said coding feature with a corresponding coding feature on the cartridge holder.