A drug delivery device configured to provide a dose of medicament is disclosed. The drug delivery device includes a main housing, a syringe arranged in the main housing, and a pneumatic power pack arranged in the main housing. The pneumatic power pack includes a pressurized gas source storing pressurized gas, a valve for the pressurized gas source, a sleeve having an inner wall, and a plunger. The sleeve is configured to receive pressurized gas released from the pressurized gas source. The plunger is in sliding gas-tight engagement with the inner wall of the sleeve. Upon activation of the valve, the valve releases the pressurized gas, and the released pressurized gas flows into the sleeve and propels the plunger in a distal direction with respect to the sleeve and the syringe, so as to eject medicament from the syringe.

A dosing syringe comprising a barrel and a piston is provided. The piston is slidably receivable in the barrel and can move within the barrel from a maximum inserted position to a withdrawn position to draw a dose of a product into the barrel. The syringe comprises means for pre-setting the withdrawn position, which defines a maximum dose which can be drawn into the barrel.

A syringe includes a dosage setter operatively coupled to a plunger rod and comprising a rotatable body that comprises a set of one or more stops for engaging the set of one or more protrusions of the plunger rod depending on at least a rotational position of the set of one or more stops relative to the set of one or more protrusions, wherein a first rotational adjustment associated with the dosage setter is configured to set a first dosage increment by adjusting a relative axial position between the rotatable body and the plunger rod, and a second rotational adjustment associated with the dosage setting assembly is configured to set a second dosage increment that is larger than the first dosage increment by adjusting a relative rotational alignment between the set of one or more stops and the set of one or more protrusions.

A medicament delivery device system for delivery of a medicament from a cartridge (10). The system comprises a first container (11) for storage of a first substance, a second container (12) received in the first container (11) for storage of a second substance, and valve means (68) for closing a distal end of the second container (12). The system further comprises a disposable cassette (102) and a reusable firing unit (200). The cassette (102) has a body (104) for receiving the cartridge (10), and a mixing element (148) for displacing the second substance into the first chamber (16) in a mixing stroke, to mix with the first substance to form the medicament. The firing unit (200) comprises a drive element (208) for expelling the medicament from the first chamber (16) in a delivery stroke and a trigger arrangement (240) for initiating the delivery stroke.

A syringe with an integrated guidewire tract. The tract provides a physical channel by which a guidewire is guided through the syringe structure. The syringe is configured to allow for a one-handed aspiration operation or injection operation, while freeing the other hand to move the guidewire through the guidewire tract of the syringe system.

An assembly for a medication delivery device having a body, a piston rod and a setting nut. The piston rod is rotatable relative to the body in a dose setting state and is axially movable in a distal direction with respect to the body in a dose delivering state. The setting nut is secured against rotational movement with respect to the body, but is axially movable relative to the body, being helically coupled with the piston rod to axially travel in the proximal direction for setting a dose of a medication due to a helical movement of the setting nut with respect to the piston rod when the piston rod is rotated in the dose setting state, and is able to axially travel in the distal direction for delivering the set dose of the medication when the piston rod is axially moved in the dose delivering state of the assembly.

A method includes moving an actuation lock of a medical injector from a first position to a second position. The actuation lock has an extended portion disposed between a shoulder of a housing and the base when the actuation lock is in the first position. The extended portion is spaced apart from the base when the actuation lock is in the second position. A distal end portion of a base, which is movably coupled to an end portion of the housing, is placed into contact with a body. The base is actuated after the placing to release an energy from an energy storage member within the housing to produce a force to move a needle from a first needle position to a second needle position. At least a portion of the needle extends through the base when the needle is in the second needle position.

A medicament delivery device is presented having a proximal disposable part arranged with a body and a delivery member cover telescopically arranged in relation to the body wherein the proximal disposable part is configured to receive a medicament container. A distal reusable power pack is detachably arranged with the proximal disposable part such that the delivery member cover has an extension position in which the delivery member cover is extended in the proximal direction to cover a medicament delivery member of the medicament container, and a retraction position in which the delivery member cover is retracted in the distal direction to expose said medicament delivery member. The distal reusable power pack can have a power unit, a rotational drive unit and a plunger unit, where the rotational drive unit is powered by the power unit and is configured to move the plunger unit upon being triggered.

A dosing syringe including a hollow cylindrical body and a plunger slidable within the hollow cylindrical body. The dosing syringe includes at least one slider slidable within a distal flange of the hollow cylindrical body transversely to the hollow cylindrical body and at least one wall is formed in the plunger for abutting and blocking the slider during its sliding within the flange, wherein the at least one wall provides a mechanical stop which stops the stroke of the plunger at a predetermined volume of product to be aspirated and/or dispensed.

A dose delivery mechanism and a medicament delivery device are presented having a housing holding a medicament container and a power unit, where the power unit has a plunger rod, a drive spring, operably arranged to act on the plunger rod and on the medicament container. A locking ring is operatively engaged with an actuator having a holding ledge that can releasably hold the plunger rod with the drive spring in a tensioned state, and with an actuator sleeve to form a lock that prevents axially movement of the actuator after dose delivery. The locking ring also cooperates with the actuator to generate an end-of-dose delivery signal. An activator is directly engaged with the actuator to provide a well-defined activation point.