A delivery device for delivering a medicament to a patient includes a cartridge disposable within a housing having a first end sealed by a septum and a second open end longitudinally opposed to the first end and defining a cartridge volume for holding the medicament. A stopper is at least partially disposed within the cartridge volume and displaceable within the cartridge volume to eject the medicament from the cartridge through the septum. A driving assembly connects to the stopper having a rotatable portion cooperatively engaged to an extendable portion such that rotation of the rotatable portion causes axial translation of the extendable portion and a connector assembly has a first connector portion connected to the extendable portion and a second connector portion connected to the stopper, the first connector portion and second connector portion are rotationally locked and axially displaceable relative to one another.

The present invention relates to a housing of a drug delivery device comprising a cylindrically shaped body (12) to accommodate a drive mechanism (13) and comprising a cartridge holder (14) to accommodate a cartridge (16) containing a dispensable medicament, the housing further comprising a connector assembly (20) to releasably interconnect body (12) and cartridge holder (14), the connector assembly (20) comprising: a tangentially extending recessed structure (30) with a tangential opening (31) to receive a radially extending pin (26), wherein the recessed structure (30) is fastened to one of body (12) and cartridge holder (14) and wherein the pin (26) is fastened to the other one of body (12) and cartridge holder (14), a release member (40) having a retaining portion (42) to cover the opening (31) in a locking configuration (60), wherein the release member (40) is displaceable in tangential direction (3) against a restoring force away from the recessed structure (30) into a release configuration (62), in which the opening (31) is uncovered to tangentially remove the pin (26) therefrom.

The present disclosure relates to a drug delivery device for dispensing of a liquid medicament, the device comprising: a housing to accommodate a cartridge filled with the medicament and having a piston slidably displaced inside the cartridge and sealing a proximal end of the cartridge, at least one resilient member having a first end arranged at an inside facing side wall portion of the housing and having a second end (opposite to the first end to abut with the piston of the cartridge.

Disclosed is an infusion device drive unit that includes a pump drive configured to operatively mechanically couple to a dosing unit to control operation of the dosing unit. The infusion device drive unit further includes a blocking member that is movable between a blocking configuration and a enabling configuration, the blocking member enabling the establishing and/or the releasing of an operative mechanical coupling between the pump drive and the dosing unit in the enabling configuration and preventing the establishing and/or the releasing of an operative mechanical coupling between the pump drive and the dosing unit in the blocking configuration. The infusion device drive unit controls the blocking member to take on the enabling configuration if the pump drive is in at least one pre-determined configuration and to take on the blocking configuration if the pump drive is in a configuration different from a pre-determined configuration.

The present invention relates to drug delivery systems that cannot be reloaded or reused and further include a passive safety shield system. The drug delivery devices described herein comprise a drug container comprising at least one bellow, wherein the at least one bellow comprises a first surface and an opposing second surface, wherein the first surface is comprised of a first Belleville spring and the opposing second surface is comprised of a second Belleville spring, wherein the second Belleville spring has a higher spring rate than the first Belleville spring; or a drug container extending between distal and proximal ends, and comprises a continuous change in cross section from proximal end to distal end; a needle, wherein the needle is in liquid communication with the drug container; a plunger extending between a proximal end and a distal end, wherein the plunger is in communication with the drug container and where upon axial movement of the punger, the drug container is compressed.

An auto injector (4) for administering injection of a medicament from a cartridge containing the medicament, the auto injector (4) comprising: a housing (6); a cartridge receiver (300) with a cartridge receiver compartment (302) configured to receive a cartridge assembly (600), with at least one cartridge retention member (808), when inserted through a cartridge receiver opening (301) along a longitudinal axis (L) in a receiving direction; wherein the cartridge receiver (300) has a passage (316) through which the at least one cartridge retention member (808) travels at least in the receiving direction, and a member (312) preventing movement beyond a retention position in a direction opposite of the receiving direction; an elongated ejector (200) that is configured with: an ejector support face (204) for supporting the cartridge or cartridge assembly (600), a longitudinal ejector slot (228) extending towards the ejector support face (204) from an ejector rest portion (206); wherein the elongated ejector (200) is suspended to move along the longitudinal direction and is spring-loaded in the direction opposite of the receiving direction; and an ejector lock (212) supported for turning at least a fraction of a revolution and maintained in a longitudinal position relative to the housing (6); wherein the ejector lock (212) has a ejector lock support portion (214) that is configured to align with and slide along the longitudinal ejector slot (228) at a first angle and to be brought to align with the ejector rest portion (206) at a second angle.

An auto injector (4) for administering injection of a medicament from a cartridge (700) containing the medicament, the auto injector comprising: a cartridge receiver (300) with a cartridge receiver compartment (302) configured to receive a cartridge assembly (600) with at least one cartridge retention member (808) when inserted through a cartridge receiver opening (302) along a longitudinal axis; and an ejector (200) configured to support the cartridge assembly (600) by being suspended to move along the longitudinal direction and being spring-loaded in the direction opposite of the receiving direction. The cartridge receiver compartment (302) has a first section (310), at a first distance from the cartridge receiver opening (301), with inwardly extending first guide members (312) that extends over first guide member angles (314) and are spaced apart to form a passage (316) at passage angles (318) between the inward first guide members (312); wherein the inward first guide members (312) form a first bore (320) accepting the cartridge assembly (600) when inserted through the cartridge receiver opening (301). The cartridge receiver compartment (302) has a second section (330) with an annular shape, at a second distance from the cartridge receiver opening (301), and with second guide members (322) with first faces (324) that are inclined about a radial axis to the longitudinal axis and angularly arranged to extend at least partly over the passage angles (318) and the first guide member angles (314).

An integrated cartridge assembly that is employed with an automated medication administration system in response to the acute medical condition. The cartridge assembly configured to be operatively coupled between a pump assembly and a medical port. The cartridge assembly includes a first cartridge and a second cartridge positioned within a housing. The first cartridge contains a portion of saline, while the second cartridge contains a portion of a medicament. The cartridge assembly also includes a gate member that maintains a separation distance between a manifold assembly and the first and second cartridges when in a locked position when the cartridge assembly is in the stored state. The cartridge assembly is operatively coupled to the medical port via a tube set that is fixedly coupled to the manifold assembly.

An injection device comprises a barrel having a proximal end for a needle to protrude therefrom; a needle assembly having a double-pointed hollow needle and a biasing means operable to bias the double-pointed hollow needle away from the proximal end of the barrel; a cartridge; and a mechanism operable to cause the cartridge to be punctured by the first end of the needle, and to cause the second end of the needle to protrude from the proximal end of the barrel and to be locked in the protruded position.

A method and system are disclosed for driving a plunger in a drug reservoir. In some embodiments, a variable friction element interconnects between a pushing shaft and a wall of the reservoir. For example, rotation of a driving element in a first direction relative to the pushing shaft may advance the pushing shaft in the reservoir. The friction element may have increased friction resistance to rotation of the pushing shaft in the first direction in comparison to frictional resistance to advancing the pushing shaft. For example, the increased friction may result from wedging a radial element between the pushing shaft and the wall of the reservoir.