A needle shield remover for removing a needle shield covering a needle on a syringe includes a body having a proximal portion and a distal portion. The distal portion is moveable between a contracted configuration and an expanded configuration in response to opposite movement of the proximal portion. The distal portion includes an internal opening for receiving and at least partially surrounding a needle shield therein. An anchor extends inwardly from the distal portion into engagement with the needle shield when the distal portion is in the contracted configuration to secure the body to the needle shield. A sleeve is in fixed axial arrangement with the proximal portion of the body. The axial engagement maintains the distal portion of the body in the contracted configuration such that force applied to the sleeve away from the body removes the needle shield and body from a syringe.

A method of manufacturing an autoinjector includes supplying a preloaded syringe including a sterile needle and a needle cover, a preassembled distal housing portion including an adhesive base on a distal end thereof and a channel for insertion of the preloaded syringe, and a proximal housing portion including a motor and a transmission. An activation device is supplied and the preloaded syringe is slid longitudinally through an opening in a proximal end of the distal housing portion into the channel. A distal end of the proximal housing portion is joined to a proximal end of the distal housing portion.

An injection device for delivering a dose of medicament from a syringe includes: a housing including a forward body and rearward body and wherein the forward and rearward body are axially moveably interconnected; a drive mechanism arranged, in use, to be released from an energized position to deliver a dose from the syringe; a latch arranged to hold the drive mechanism in the energized position; and a trigger for releasing the latch; wherein the injection device further includes an interlock arrangement moveable between a locked position in which release of the drive mechanism is prevented and an unlocked position in which the drive mechanism may be released, the interlock arrangement including: an internal blocking formation associated with the rearward body and positioned between the latch and trigger, and wherein in use, forward movement of the rearward body relative to the forward body moves the blocking formation into the unlocked position.

A medical injection device, including: a medication container having a mov-able piston; a push rod assembly displaceably disposed in the medical injection device, the push rod assembly having a plurality of spaced-apart position setting means disposed along the length thereof, the push rod assembly selectively displacing the movable piston to dispense medicament from the medication container; a spring to bias the push rod assembly to move toward the distal end of the medical injection device; a releasable restraining means configured to releasably restrain the push rod assembly in a locked state against the biasing of the spring, wherein, upon release of the releasable restraining means, the push rod assembly moves under force of the spring toward the distal end of the medical injection device; and an arming means configured to move the push rod assembly toward the proximal end of the medical injection device.

A drive mechanism for a delivery device comprising a rotator comprising an outer surface and an inner surface, the rotator configured to rotate from a first position to a second position; and a needle cover comprising an inner surface that engages the outer surface of the rotator. An end of injection indication device is positioned at least partially within a plunger rod spring, the end of injection indication device providing a signal to a user of the drive mechanism that an injection has been completed.

A method is disclosed for state sensing and controlling of a multi-state drug delivery device. In some embodiments a power switch is reused as a state sensor. Optionally the state sensor may be toggled by user actions and/or the movements of parts of the device, for example needle and/or a protective element. Optionally, drug discharge and/or status indication is controlled in accordance with sensor output. In some embodiments control is by means of a processor. Alternatively or additionally, control is by means of simple physical circuits.

A medication delivery device, for use with a container having a distal end and a needle being placed at the distal end of the container, including: a push rod which is movable with respect to at least a portion of the container; a resilient member configured to bias the push rod to move toward the distal end of the container; a releasable restraining means configured to releasably restrain the push rod in a locked state against the biasing of the resilient member; a means to adjust amount of movement of the push rod with respect to the container in order to deliver a predetermined dose of medication; and an activation means configured to release the releasable means. The means to adjust amount of movement of the push rod with respect to the container is bi-directional. The device can accommodate containers of different size or shape.

An injection device that comprises a chamber configured for containing a substance to be injected and a needle operatively associated with the chamber and having a length sufficient to deliver the substance to an intradermal injection site. A collar surrounds the needle, defining a collar cavity. The collar also has a peripheral forward skin-contacting surface that surrounds and is radially spaced from the needle and injection site by an area that is sufficiently large to allow a patient's skin to move into the collar cavity to properly position the needle for intradermal delivery of the substance to the injection site to allow spread of the injected substance under the skin while inhibiting or preventing backpressure within the skin from forcing the substance out through the injection site.

An apparatus includes a housing, a medicament container and a movable member. The medicament container is movable within the housing between a first position and a second position in response to a force produced by an energy storage member. A proximal end portion of the medicament container includes a flange and has a plunger disposed therein. A first shoulder of the movable member exerts the force on the flange to move the medicament container from the first position to the second position. A portion of the first shoulder deforms when the medicament container is in the second position such that at least a portion of the force is exerted upon the plunger. A second shoulder of the movable member exerts a retraction force on the flange to move the medicament container from the second position towards the first position.

Apparatuses for automatic medicament injection and methods for manufacturing automatic medicament injectors are described herein. In some embodiments, an apparatus includes a housing, a needle, an energy storage member, an actuator, a locking member, and a needle guard. The needle is configured to move between a first position and a second position. In its first position, the needle is contained within the housing. In its second position, at least a portion of the needle extends from the housing. The energy storage member has a first configuration and a second configuration and is configured to produce a force when moving between its first configuration and its second configuration to move the needle from its first position to its second position. The actuator is configured to move the energy storage member from its first configuration to its second configuration. The locking member is movably coupled to the distal end portion of the housing such that the locking member can be moved between a first position and a second position. In its first position, the locking member is configured to engage the actuator to prevent the actuator from moving the energy storage member to the second configuration. The needle guard is removably coupled to at least one of the distal end portion of the housing or a base movably coupled to the distal end portion of the housing.