An autoinjector includes a housing in which a pre-filled syringe is arranged, a drive chassis mounted in the housing, and a release mechanism. The drive chassis is biased with respect to the housing by a drive spring. The drive chassis is fixed with respect to the housing and with respect to movement relative to the housing in a storage state of the autoinjector. The release mechanism includes a trigger arm engaging a stop feature in the housing in the storage state of the autoinjector, and the trigger arm is configured to be disengaged from the stop feature upon activation of the autoinjector.

A needle-free injection device including an outer housing and an inner housing configured to receive a needle-free syringe in one end. The inner housing of the device is moveable within the outer housing between a syringe loading position and a firing position. The device also includes an activation button and a housing lock engaged by the activation button to prohibit movement of the inner housing from the syringe loading position to the firing position if the activation button is activated in the syringe loading position.

The present invention relates to a medicament delivery device comprising a housing (10), which housing is arranged to accommodate a medicament container (20); a power unit (88) comprising: a drive force element (98), an actuation unit (90, 102) operably connected to said drive force element (98); which actuation unit (90, 102) is movable, upon activation of said drive force element (98), for expelling a dose of medicament from said medicament container (20); a monitoring unit (130) provided with an electrical power source (140) for operating said monitoring unit (130). The invention is characterised in that the medicament delivery device further comprises an activation element (160) operably connected to said actuation unit (90, 102), to said monitoring unit (130) and to said electrical power source (140), wherein said activation element (160) is arranged to allow connection between said electrical power source (140) and said monitoring unit (130) when said actuation unit (98, 102) is moved.

An autoinjector basically includes a housing, a pre-filled syringe, a drive chassis, and a needle guard. The pre-filled syringe is mounted in the housing. The drive chassis is configured to move a plunger in the pre-filled syringe to dispense medicament via an urging force from a drive spring. The needle guard is moveable in the housing between a storage state, a dispensing state, and a lock-out state. The needle guard is biased towards an extended position by a lock-out spring. The needle guard selectively engages the housing to establish a frontmost position of the needle guard in the storage state, and an offset position of the needle guard in the lock-out state. The offset position is axially offset from the frontmost position in the distal direction.

An auto-injector automatically dispenses a predetermined dose of medicament upon activation. The auto-injector includes a needle cover operative to engage an injection site and activate the injector. The needle cover is configured to move from a locked retracted position prior to a medicament dispensing operation to a locked extended position after the medicament dispensing operation. The non-removable needle cover prevents contact with the needle both before and after the medicament dispensing operation.

The present invention relates to a medicament delivery device comprising a housing, arranged to accommodate a medicament container; a power unit arranged inside said housing, said power unit comprising a plunger rod, a drive spring operably arranged to act on the plunger rod and, which is, upon activation, operably arranged to act on said medicament container, an actuator comprising holding elements, capable of releasably holding said plunger rod with said drive spring in a tensioned state, and an actuator sleeve operably connected to said actuator for releasably locking said holding elements in a holding state; said medicament delivery device further comprising a medicament delivery member guard slidably movable in said housing and arranged to act on said actuator sleeve for setting said holding elements with said actuator sleeve in a first activation state; an activator unit arranged to be manually operated and, which is, operably connected to said plunger rod for setting said holding elements with said actuator sleeve in a second activation state, wherein said plunger rod is released when both activation states are set.

The present invention concerns a drug delivery device (1) comprising: a housing (2) extending along a main axis, a torsion spring (5) comprising a first spring end (4) arranged stationarily with respect to the housing (2) and a second spring end (6) capable of rotation about the main axis, a rotatable shaft (80) extending along the main axis, the rotatable shaft (80) having a non-self-locking thread (81) and being axially fixed with respect to the housing (2), a spring end retainer (82) to which the second spring end (6) is attached, the spring end retainer (82) being rotationally fixed relative to the rotatable shaft (80), and a nut member (45) engaged with the non-self-locking thread (81), the nut member (45) being axially movable by translation relative to the housing (2) to thereby travel the non-self-locking thread (81) between a first position in which the torsion spring (5) is in a relaxed state and a second position in which the torsion spring (5) is in a strained state.

In an elongated casing, an active agent container connected to an injection needle can be shifted axially by a spring force. Auto-injectors distributed pre-filled and with the springs tensed may be provided with a needle protecting cap to ensure sterility of the needle. When the needle protecting cap is removed as preparation for using the auto-injector, a tensile force can be exerted on the active agent container. Therefore, the active agent container and needle must be prevented from being undesirably pulled forwards. At least one latching tongue prevents the active agent container from being prematurely shifted with respect to the casing, by abutting a flange arranged on a sliding sleeve accommodating the active agent container. When the auto-injector is placed onto the skin, a needle protecting tube is shifted into the casing, forcing the latching tongue away from the flange, thereby freeing the travel path for needle movement.

An injection device is presented having an outer housing configured to receive a syringe, the syringe containing medicament, a movable stopper, and a needle. A plunger rod moves the stopper and a needle shield moves relative to the outer housing between a needle covering position and a needle exposing position, where the needle exposing position is axially rearward of the needle covering position. The needle shield is biased axially forwardly toward the needle covering position. A locking member is axially moveable in the outer housing from a first axial position to a second axial position in response to forward axial movement of the plunger rod. A locking sleeve is axially movable relative to the outer housing between a non-locking position and a locking position, the locking position being axially rearward of the non-locking position, in which axial movement of the locking sleeve is selectively limited by the locking member when in the second axial position.

An autoinjector includes a case adapted to hold a medicament container having a needle telescopically coupled to the case and movable between a first extended position relative to the case in which the needle is covered and a retracted position relative to the case in which the needle is exposed. The autoinjector includes a plunger rotationally and slidably disposed in the case rotatable relative to the case between a first rotational position in which the plunger is engaged to the case and a second rotational position in which the plunger disengages the case engages the plunger to rotate the plunger from the first rotational position to the second rotational position when the needle shroud translates from the first extended position to the retracted position. The autoinjector includes a cap removably coupled to the case includes at least one compliant case beam adapted to releasably engage at least one aperture in the case.