Abstract: An alignment device for coupling a liquid drug cartridge with a longitudinal cartridge axis and a constricted neck portion with a cap and a piercable septum distal from the neck portion with an adapter is presented. The septum is perpendicular to the cartridge axis. The device comprises an adapter cannula with a longitudinal cannula axis to pierce the septum and a proximal cartridge engagement structure for axial aligned engagement with a distal end section of cartridge body. The device further comprises a distal adapter engagement structure for axial aligned engagement with the adapter. A coupling of the cartridge with the adapter is enabled via the alignment device. The adapter and the cartridge are, during the coupling, aligned by the cartridge engagement structure and the adapter engagement structure, respectively relative to each other such that the longitudinal cartridge axis and the longitudinal cannula axis form a common longitudinal axis.

Abstract: An alignment device for coupling a liquid drug cartridge with a longitudinal cartridge axis and a constricted neck portion with a cap and a piercable septum distal from the neck portion with an adapter is presented. The septum is perpendicular to the cartridge axis. The device comprises an adapter cannula with a longitudinal cannula axis to pierce the septum and a proximal cartridge engagement structure for axial aligned engagement with a distal end section of cartridge body. The device further comprises a distal adapter engagement structure for axial aligned engagement with the adapter. A coupling of the cartridge with the adapter is enabled via the alignment device. The adapter and the cartridge are, during the coupling, aligned by the cartridge engagement structure and the adapter engagement structure, respectively relative to each other such that the longitudinal cartridge axis and the longitudinal cannula axis form a common longitudinal axis.

Abstract: A venting device is presented. The venting device comprises a venting member made from a hydrophobic and gas-permeable material. The venting member has an environment coupling surface and an opposed cartridge coupling surface and a carrier member. The carrier member structurally supports the venting member. The venting member is designed such that the venting device and a liquid drug cartridge form, in the assembled state, a compact common cartridge assembly. After inserting the cartridge assembly into a cartridge compartment of an ambulatory infusion device, the cartridge coupling surface fluidic couples, to a non liquid contacting outer surface of the movable wall, and the environment coupling surface at the same time fluidic couples to the environment.

Abstract: An alignment device for coupling a liquid drug cartridge with a longitudinal cartridge axis and a constricted neck portion with a cap and a piercable septum distal from the neck portion with an adapter is presented. The septum is perpendicular to the cartridge axis. The device comprises an adapter cannula with a longitudinal cannula axis to pierce the septum and a proximal cartridge engagement structure for axial aligned engagement with a distal end section of cartridge body. The device further comprises a distal adapter engagement structure for axial aligned engagement with the adapter. A coupling of the cartridge with the adapter is enabled via the alignment device. The adapter and the cartridge are, during the coupling, aligned by the cartridge engagement structure and the adapter engagement structure, respectively relative to each other such that the longitudinal cartridge axis and the longitudinal cannula axis form a common longitudinal axis.