The present disclosure relates to an assisted injection device for injecting a composition contained in a medical container. The injection device includes a body configured to receive the medical container in a fixed position relative to the body. The injection device includes a spring-loaded piston rod translationally movable inside the body along a spring axis. The injection device includes a lever pivotably mounted on the body about a first pivot axis orthogonal to the spring axis at a first distance form the spring axis. The injection device includes a selective blocking system coupled to the lever by a second pivot axis orthogonal to the spring axis. The lever is pivotable between a rest position. The selective blocking system engages the piston rod to prevent any translation movement of the piston rod and a second position wherein the selective blocking system releases the piston rod.

An auto-injector for receiving and operating a syringe, the auto-injector comprising a housing for receiving the syringe. The housing comprises a main body and a door operable into a first position and a second position, wherein the syringe is receivable within the housing when the door is in the first position. The door is configured to couple to: (i) a first plunger driver for priming thereof on a first movement of the door; and (ii) a second plunger driver for priming thereof on a second movement of the door. The first and second plunger drivers are configured on activation of the auto-injector to drive a plunger forward within the auto-injector to operate the syringe received within the auto-injector.

A medicament delivery device is presented having a housing, a delivery member cover slidably arranged in the housing, a medicament container housing arranged in the housing, a forward-biased rotator structure configured to move the medicament container housing in a forward direction in the housing, wherein the delivery member cover is configured to be moved axially from an extended position relative to the housing to a retracted position, thereby causing the rotator structure to rotate from a first rotator position to a second rotator position, and a forward-biased plunger rod extending axially inside the rotator structure and having a first axial engagement position with the rotator structure when the rotator structure is in the first rotator position and the second rotator position, the rotator structure having a first rotator guide track structure configured to cooperate with an inner surface structure of the housing.

A support structure for a medicament container is disclosed that is arranged to accommodate an elongated plunger rod, where the support structure has at least one flexible element arranged to be moved in contact with, and to exert a force, on a distal end surface of the medicament container, wherein the at least one flexible element is provided with a contact member arranged to contact an outer surface of the plunger rod and to be moved out of contact with the plunger rod when moved in contact with the medicament container.

A medicament delivery device is presented having a housing with a proximal end and a distal end, a medicament container arranged within the housing, a biased delivery member cover associated with the housing and movable in relation to the housing, a biased plunger rod associated with the medicament container and movable in relation to the housing, a tubular rotator associated with both the delivery member cover and the biased plunger rod, and a cap assembly associated with the housing, wherein a gap is defined between the proximal end of the biased plunger rod and the stopper of the medicament container when the medicament delivery device is in an assembled state, and wherein the proximal end of the biased plunger rod is in contact with the stopper of the medicament container when the medicament delivery device is in a calibrated state.

A medicament delivery device is presented having a tubular housing comprising a distal end and a proximal end; a medicament container arranged with a medicament delivery member and placed in the housing, a cap removably arranged on the proximal end of the housing and configured to cover the delivery member; a drive mechanism configured to act on the medicament container to expel the medicament through the medicament delivery member upon the drive mechanism is triggered; an activation member arranged coaxially movable in relation to the housing, associated with the drive mechanism and comprising a proximal tubular portion which extends from the proximal end of the housing and wherein for triggering the drive mechanism the activation member is axially moved towards the distal end of the housing after removing the cap from the housing. The proximal tubular portion of the activation member has a resilient element arranged with friction.

A drive assembly for a medicament delivery device having a driver rotationally driven, an actuator sleeve, and a resilient blocking member that surrounds the driver and is arranged radially inside of the actuator sleeve, wherein the blocking member engages with the driver to prevent rotation of the driver relative to the blocking member, the actuator sleeve being configured to move from a first position relative to the blocking member, in which the drive assembly is in an initial state and in which the actuator sleeve is configured to prevent the blocking member from moving radially outwards, causing the blocking member to engage with the driver and thereby prevent the driver from rotation, to a second position in which the drive assembly is in an activation state.

A medicament delivery device is presented having a housing with an inner surface structure, a delivery member cover slidably arranged in the housing, a medicament container housing arranged in the housing, a rotator configured to cooperate with the inner surface structure, the rotator being in axial engagement with the medicament container housing, wherein the delivery member cover is configured to be moved axially from an extended position relative to the housing to a retracted position, thereby causing the rotator to rotate from a first rotator position to a second rotator position, a forward-biased plunger rod extending through the rotator and having a first axial engagement position with the rotator when the rotator is in the first rotator position and in the second rotator position, wherein the rotator has an engagement structure configured to engage with the inner surface structure when the rotator is in the first rotator position to prevent forward movement of the rotator, and wherein the rotator is configured to disengage from the inner surface structure when the rotator is rotated from the first rotator position towards the second rotator position, causing the rotator, the plunger rod and the medicament container housing to move forward an auto-penetration distance in the housing.

A start of medicament delivery notification mechanism is presented where the notification mechanism is positioned within a housing of a medical device and includes a rear cap secured to a distal end of the housing, where the rear cap has a hollow tubular housing extending proximally from a distal end of the rear cap such that the tubular housing is cantilevered within and rotatably fixed relative to the housing and is parallel with a longitudinal axis of the housing. A rotator rotatably is positioned around the tubular housing such that rotator can rotate relative to the tubular housing from a first position to a second position, where the second position coincides with an initiation of a delivery of a dose of medicament. The rotator further has a contact surface that engages with and subsequently disengages from a corresponding contact surface located on the rear cap or on an inside surface of the housing.

An automatic injection device for use with a syringe including at least one syringe piston and a needle coupled to a forward end thereof, comprising a housing element arranged along a longitudinal axis and having a forward end and a rearward end; at least one resilient element arranged to be located within the housing element; a needle shield selectably positionable with respect to the housing element; and a control unit adapted, when actuated, to be driven by the at least one resilient element for initially displacing the syringe relative to the housing element from a non-penetration position to a penetration position and thereafter displacing the at least one syringe piston in the syringe to effect drug delivery, and wherein the control unit is configured to be actuated upon axial rearward displacement of the needle shield with respect to the housing element.