The invention relates to an injection unit, preferably a pen-shaped injection unit, for administering or delivering a fluid product. The injection unit comprises a housing, an axially movable piston rod mounted in the housing in a non-rotatable manner, a delivery apparatus having a threaded nut that is able to move the piston rod in order to deliver product, a dosing device having a dosing sleeve, a rotary knob, a discharge button arranged coaxially on the dosing sleeve, and a receptacle for the product. The dosing device is connected to the delivery apparatus via a coupling mechanism, wherein the coupling mechanism includes of at least two coupling surfaces that each carry a toothing comprising teeth, wherein the coupling surfaces are used to generate an acoustic and/or tactile signal corresponding to the set or corrected dose of the product to be administered during the dosing operation or during correction of the dose.

The present disclosure relates to an injection device for setting and dispensing of a dose of a medicament, the device comprising: an elongated main housing to accommodate a cartridge filled with the medicament and defining an axial direction, a piston rod arranged inside the main housing and extending in axial direction along a first axis to operably engage with a piston of the cartridge, a reset member axially displaceable inside the main housing between a proximal operating position and a distal reset position along a second axis radially offset from the first axis to switch the device between a reset mode and an operating mode, a cartridge holder releasably attachable to a distal end of the main housing on the first axis to accommodate a distal end of the cartridge, wherein the cartridge holder comprises a sidewall portion with a radially outwardly protruding lock member to axially engage with the reset member located radially adjacent the cartridge holder.

An injection pen, comprising a housing, a lead screw axially moveable in the housing, a dose set member for dose setting and dose correcting, threadably connected to the housing and having a first mating feature, a setback member having a second mating feature for engaging the first mating feature, a clicker that generates an audible or tactile indication during operation, the clicker being operatively connected to the dose set member, and a push button operatively connected to the setback member to cause the second mating feature to engage the first mating feature during an injection, the push button receiving the clicker, wherein the first mating feature is disengaged from the second mating feature during dose setting and dose correcting and engaged with the second mating feature during an injection.

An autoinjector (100′) for expelling a single dose of a drug from a held cartridge (600) comprising a piston (630). The autoinjector includes a needle shield (350, 380′) axially movable from an initial extended position via a triggering position to a trigger release position. The needle shield (350, 380′) is operatively coupled to a plunger release element (320′, 1320) cooperating with a plunger (310, 400) to define a releasable retaining mechanism that retains the plunger release element (320′, 1320) threadedly engaged with a base thread component (204′, 1204) in a predefined relative rotational and axial position and against rotational bias provided by an actuator (330). The needle shield (350, 380′) is configured for operating the retaining mechanism to release the retaining of the plunger release element (320′, 1320) and the base thread component (204′, 1204) from the predefined relative rotational and axial position upon the needle shield (350, 380′) being moved into the trigger release position.

A drive mechanism for a delivery device is presented containing, a rotator having an outer surface and an inner surface, the rotator configured to rotate from a first position to a second position. A needle cover having an inner surface that engages the outer surface of the rotator. A rotatable plunger rod having an outer surface configured to engage the inner surface of the rotator. When the rotator rotates from the first position to the second position, the rotatable plunger rod is rotated by the rotator and a plunger rod spring is released from a pre-tensioned state to exert a force on the rotatable plunger rod.

A dosing device for an injection device, the dosing device including an actuating element for adjusting and/or dispensing a dose from the injection device, a thrust element for generating a forward movement for discharging a dose and a coupling to which the actuating element and the thrust element are coupled such that a rotational movement of the actuating element is transmitted directly to the thrust element and an axial movement of the actuating element is different than an axial movement of the thrust element.

The present disclosure is directed to a window element and a drug delivery device, like a pen-type injector, that provides for administration by injection of medicinal products from a multidose cartridge. The drug delivery device may comprise a housing, a dose setting member, a dial, a drive member, a clutch and/or a clicker. The window element comprises a first member with a window and being made from a rigid material, a second member and a third member, each made from an elastically deformable material and being attached to the first member.

A drug delivery device for selecting and dispensing a number of user variable doses of a medicament. The device comprises a housing, a dose setting element rotatable relative to the housing during dose setting and dose dispensing, a drive member coupled to the dose setting member via a clutch, and a piston rod coupled to the housing and to the drive member Further, the device further comprises a cartridge holder removably attached to the housing and a reset element, which is permanently rotationally constrained to the housing and rotationally constrained to the drive member during dose setting, and at least one spring acting on the reset element, such that, if the cartridge holder is detached from the housing, the reset element is axially moved relative to the housing into a position in which the drive member is allowed to rotate relative to the housing