Disclosed is an auto injector and a method for administering a medicament. The auto injector comprising: a housing; a cartridge receiver; a drive module coupled to move a plunger rod configured to move a first stopper; a temperature sensor configured to provide a temperature signal indicative of the temperature of the medicament in the cartridge; a processing unit configured to: receive the temperature signal; control the drive module to move the plunger rod from a first plunger rod position to a mix plunger rod position wherein the movement from the first plunger rod position to the mix plunger rod position is based on the temperature signal.

An autoinjector includes a housing for receiving in use in a generally longitudinal loading direction a syringe assembly including a syringe carrier and a syringe, the syringe including a syringe body having a slideable internal piston for expressing a dose contained in the body through a needle at a forward end thereof; a drive mechanism for providing drive for operation of the autoinjector and being disposed generally within the housing and including a mechanical energy source and a winder element for being rotated to charge the energy source, and an input transmission train operational between the syringe assembly and the winder element in use, whereby loading of the syringe assembly into the housing rotates the winder element to charge the energy source.

Drug delivery device adapted to receive a cartridge, comprising a piston driver adapted to expel an amount of drug from a received cartridge, and a base member adapted to engage a cartridge and position the cartridge relative to the piston driver, the base member comprising a main portion with a central passage, a portion of the piston driver being arranged axially displaceable through the passage, the piston driver distal end being arranged distally of the central passage, and flexible centring means adapted to receive the proximal end of a cartridge and centre it relative to the central opening and thereby to the piston driver.

An apparatus for transdermal injection includes a sleeve including a proximal end, a distal end, and an inner wall surface extending along the sleeve from a first opening at the proximal end to a second opening at the distal end. The inner wall surface forms a channel in the sleeve, the channel having a first portion with a substantially frustoconical shape. The channel of the sleeve is configured to receive a substantially frustconically shaped injection cartridge, to substantially uniformly support the injection cartridge during a transdermal injection operation, and to prevent movement of the injection cartridge out of the distal end of the sleeve.

An auto injector for delivery of administering a medicament comprising: a housing; an electrical motor adapted to move a piston between proximal and distal positions in a longitudinal direction of the auto injector; a syringe holder extending from a proximal to a distal end and configured to receive a syringe, a first spring adapted for moving the syringe holder with the syringe proximally for insertion of the needle; wherein the electrical motor is the only motor in the auto injector.

A drug delivery device comprising a rotatable scale drum, a trigger member, an actuation member, a trigger spring acting on the trigger member and being energized by movement of the actuation member, as well as an end-of-dose switch adapted to be actuated by movement of the trigger member. The trigger member is adapted to be arranged in an axially supported position against the action of the energized trigger spring, and released from the axially supported position when the scale drum is rotated from a set position to an end-of-dose position, whereby the trigger member is moved axially by the trigger spring, the end-of-dose switch thereby being actuated.

A syringe with an injection dose adjustment function, comprising a medicine vial connecting apparatus and an adjustable propulsion apparatus; by means of assembling the medicine vial connecting apparatus and a medicine vial, and then installing the adjustable propulsion apparatus in the medicine vial connecting apparatus and extending same into the medicine vial, a rotating knob of the medicine vial connecting apparatus can drive a push rod of the adjustable propulsion apparatus to move backward to a predetermined scale; at the time of injection, pressing the push rod enables the medicine vial to output a predetermined dosage of medicinal liquid, such that the syringe can adjust the injection dosage according to the requirements of different injection subjects.

An assembly for a drug delivery device comprises a housing, a dose member which is displaceable in a proximal direction with respect to the housing for setting of a dose of a drug, a clutch member which is displaced in the proximal direction with respect to the housing when setting the dose, and a stop member configured to define a clutch stop position. The clutch member and the dose member are configured to mechanically cooperate with one another when the clutch member is in the clutch stop position, thereby preventing further displacement of the dose member in the proximal direction with respect to the housing during setting of the dose.

A medicament injection device is disclosed comprising a housing containing a medicament cartridge holder; a rotatable cap assembly; a needle holder holding a needle, the needle holder being releasably supported by the cap assembly, a pre-stressed spring coupled to the medicament cartridge holder; wherein the cap assembly is arranged so that rotation thereof releases the pre-stressed spring, causing the medicament cartridge holder to move axially in a distal direction towards the needle. A method of operating the device is also disclosed.

Disclosed is an auto injector and a method for administering a medicament. The auto injector comprising: a housing; a cartridge receiver; a drive module coupled to move a plunger rod configured to move a first stopper; a temperature sensor configured to provide a temperature signal indicative of the temperature of the medicament in the cartridge; a processing unit configured to: receive the temperature signal; control the drive module to move the plunger rod from a first plunger rod position to a mix plunger rod position wherein the movement from the first plunger rod position to the mix plunger rod position is based on the temperature signal.