A system for a drug delivery device is provided. The system includes: a housing and a cartridge unit that is attachable to the housing or releasably attached to the housing. The cartridge unit includes a cartridge unit guide feature, the cartridge unit guide feature being provided to establish a guiding interface with the housing in order to guide relative movement of the cartridge unit and the housing with respect to one another when attaching the cartridge unit to the housing. The cartridge unit includes a cartridge unit interface feature, the cartridge unit interface feature being provided to form a further interface, in addition to the guiding interface, with the housing of the further interface being established when the cartridge unit is attached to the housing. The guiding interface is a bayonet-type interface which defines at least two different stages of movement between the cartridge unit and the housing when the cartridge unit is attached to the housing, a first stage with at least axial movement by a first stage axial distance in a first stage axial direction and a second stage with at least rotational movement by a second stage angle in a second stage rotational direction. The further interface is or includes a ramp interface.

A drug delivery device adapted to receive a cartridge and hold it in a mounted position is provided, comprising a housing, an expelling assembly, and a front-loaded cartridge holder assembly adapted to receive and hold a cartridge in a mounted state. The assembly comprises cartridge holding means actuatable between a receiving state and a holding state, as well as a user operated actuation sleeve being rotationally actuatable relative to the housing between a loading state and an operational state, such that the cartridge holding means is actuated from the receiving state to the holding state when the actuation sleeve is actuated from the loading state to the operational state. The actuation sleeve is configured to enclose at least a portion of a mounted cartridge and is provided with inspection means allowing at least a portion of an enclosed cartridge portion to be visually inspected.

A system is disclosed for inserting a pharmaceutical cartridge into a delivery device. Optionally the cartridge is inserted in an arbitrary orientation. Optionally, the system reorients the cartridge to a locked orientation. For example, a driver applies a torque to the cartridge to cause the reorienting. For example, said torque rotates the cartridge around an axis thereof until the cartridge reaches the locked orientation. Optionally, when the cartridge reaches the locked orientation an interference element on the cartridge interlocks with a complementary interference element on the delivery device to lock the cartridge in the locked orientation. Optionally when the cartridge is locked in the second orientation, the torque causes discharge the pharmaceutical.

A cartridge unit for a drug delivery device is provided, comprising: a cartridge unit guide feature, the cartridge unit guide feature being provided to mechanically cooperate with a housing guide feature provided on a housing to establish a guiding interface in order to guide relative movement of the cartridge unit and the housing when attaching the cartridge unit to the housing, wherein the cartridge unit guide feature is provided with at least one cartridge unit interface feature, wherein the cartridge unit interface feature is adapted to establish a further interface with the housing.

An assistive device for use with a syringe comprises a housing for accommodating the syringe, a dispense member to be moved in a distal direction for dispensing a medicament from the syringe and a needle guard for covering a needle of the syringe before operation of the device. The dispense member comprises a first locking device and the housing comprises a second locking device for locking the dispense member to the housing when the needle guard in is a distal position, such that a movement of the dispense member in the distal direction is prevented.

An autoinjector for dispensing a liquid product includes a housing; a product container arranged in the housing, particularly, a syringe comprising a displaceable piston; a drive member; a first spring which acts on the drive member and the piston to dispense the product from the container; signal element releasably axially coupled with the drive member so that the signal element is transported in the dispensing direction as said drive member is displaced; and a second spring, which exerts a spring force on the signal element against the dispensing direction and is tensioned as the signal element is transported in the dispensing direction. When the signal element is released or detached from the axial coupling, the second spring causes the signal element to accelerate opposite the dispensing direction and strike against a signal stop and generate an acoustic and/or tactile signal.

A drug delivery device may include a housing having an opening and a drug storage container having a body portion with a proximal end and a distal end and a delivery member extending from the distal end of the body portion. The device may also include a plunger moveable toward the distal end of the drug storage container to expel a drug from the drug storage container through the delivery member and a plunger biasing member configured to urge the plunger toward the distal end of the drug storage container. The device may further include a container holder configured to support the drug storage container with respect to the housing such that a resultant force acting on the drug storage container from the plunger biasing member is at least substantially completely borne by the distal end of the body portion of the drug storage container.

A drug delivery device includes an inner body adapted to receive a pre-filled syringe with an injection needle, one or more flexible arms on the inner body extending in a distal direction, and one or more support members slidably arranged to operatively outwardly support the flexible arms. The flexible arms have respective inwardly directed protrusions adapted to engage a neck of the syringe. When the support member is in a distal position, it does not support the flexible arms. When the support member is in a proximal position, the support member supports the flexible arms and prevents them from being outwardly deflected.

A bottle holder for a syringe includes a stop surface, a piercing hollow spike protruding beyond the stop surface, a guideway, and a first and a second clamping element. Each clamping element includes a through-hole and is moveable back and forth between an insertion position and a clamping position. When the clamping elements are in the insertion position, a neck of the bottle can be moved through the through-holes until the front end of the bottle abuts against the stop surface such that the piercing hollow spike pierces a film at the front end of the bottle. At least one of the clamping elements in its clamping position presses against the neck of the bottle in order to clamp the bottle in the holder.

An injector includes a body, an injection needle movably mounted to the body and a pathway within the body sized for receiving either of a first cartridge or a differently dimensioned second cartridge therein. The pathway includes a coupler mounted at a distal end that is engageable with the first cartridge or the second cartridge for to fluidly connect with the injection needle. At least two adapter collars are mounted within the pathway. A first adapter collar is configured to receive either one of the two cartridges therethrough upon insertion into the pathway, and configured to engage a portion of the first cartridge to stabilize the first cartridge within the pathway. A second adapter collar is also configured to receive either one of the two cartridges therethrough upon insertion into the pathway, but configured to engage a portion of the second cartridge to stabilize the second cartridge within the pathway.