Abstract: A drive train for a wind-up injection device is described. The drive train includes a torsional energy storage adapted to be loaded or unloaded by a rotatable element, a rotatable user handle, a rotationally driveable expelling mechanism adapted to expel the liquid drug, and a clutch element coupled with the torsional energy storage via the rotatable element and including a ratchet for maintaining the rotatable element at one of a number of discrete angular positions against the torque of the torsional energy storage. The clutch element is adapted to transmit the torque from the user handle to the torsional energy storage, or alternatively from the torsional energy storage to the expelling mechanism. The ratchet is switchable from one position to an adjacent position by a torque transmitted from the user handle to the torsional energy storage. The drive train is adapted to dampen torque peaks visco-elastically and/or visco-frictionally.

Abstract: A button for a drug delivery device with a reduced operating loudness includes a plate-like button body forming a touch surface, wherein the plate-like button body is coupled by an axial supporting member to a noise-generating interface of the drug delivery device and movable into a longitudinal direction of the drug delivery device, wherein the plate-like button body includes a material composite with at least one first component consisting of a first material and at least one second component consisting of a second material different from the first material, wherein the at least one first component and the at least one second component are coupled via at least one coupling plane that is at least sectionwise slanted or perpendicular to the longitudinal direction. Further, the disclosure describes a button assembly for a drug delivery device which is shock resistant.

Abstract: A drive train for a wind-up injection device is described. The drive train includes a torsional energy storage adapted to be loaded or unloaded by a rotatable element, a rotatable user handle, a rotationally driveable expelling mechanism adapted to expel the liquid drug, and a clutch element coupled with the torsional energy storage via the rotatable element and including a ratchet for maintaining the rotatable element at one of a number of discrete angular positions against the torque of the torsional energy storage. The clutch element is adapted to transmit the torque from the user handle to the torsional energy storage, or alternatively from the torsional energy storage to the expelling mechanism. The ratchet is switchable from one position to an adjacent position by a torque transmitted from the user handle to the torsional energy storage. The drive train is adapted to dampen torque peaks visco-elastically and/or visco-frictionally.

Abstract: An electronic system comprising: at least one user interface member configured to be manipulated by a user for performing a dose setting operation of the drug delivery device and/or for performing a dose delivery operation for delivering a set dose, an electronic control unit configured to control operation of the electronic system, an electrical signaling unit configured to provide at least one electrical signal when the user interface member is manipulated, and a manipulation evaluation unit configured to evaluate the at least one electrical signal of the signaling unit to determine whether the manipulation of the user interface member indicated by the at least one signal of the signaling unit qualifies as an activation operation. The electronic control unit is configured to switch the electronic system into a higher power consumption when the manipulation evaluation unit has confirmed that the manipulation qualifies as activation operation.

Abstract: An electronic module connectable to an autoinjector, the electronic module configured to detect and to monitor a dose administering process with the autoinjector or parameters related thereto and to provide a user of the autoinjector with feedback on the dose administering process or parameters related thereto.

Abstract: An electronic system for a drug delivery device is disclosed. The electronic system comprises a dose setting and drive mechanism. The dose setting and drive mechanism comprises a first member and a button module. The dose setting and drive mechanism is configured such that, at least in the dose delivery operation and/or in the dose setting operation, the first member moves relative to the button module. The electronic system has at least a first low power consumption state and a second high power consumption state. A rotation and/or axial movement of the button module relative to the first member generates a movement component of the at least one switch member relative to the button module and the first member, which triggers switching between the first low power consumption state and the second high power consumption state.

Abstract: 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.

Abstract: An electronic system for a drug delivery device is provided. The electronic system comprises a dose setting and drive mechanism comprising a first member and a second member, wherein in the dose delivery operation and/or in the dose setting operation, the first member moves, e.g. rotates, relative to the second member; an electronic control unit; an electrical use detection unit operatively connected to the electronic control unit, and configured to generate a use signal in response to the relative movement, e.g. a relative rotational movement, between the first member and the second member, preferably during the dose delivery operation. The electronic system is configured such that it is switched from a first state into a second state by the electronic control unit in response to the use signal, wherein the electronic system has an increased electrical power consumption in the second state as compared to the first state.

Abstract: An autoinjector includes a housing, a prefilled syringe mounted in the housing, and a drive chassis mounted in the housing. The drive chassis biased with respect to the housing, and further being fixed with respect to the housing, and configured to move relative to the housing in a storage state of the autoinjector, the drive chassis moving relative to the housing upon dispensing a material from the pre-filled syringe. The autoinjector is configured to generate an audible end of dose feedback between the drive chassis and the housing as the autoinjector approaches the end of dispensing.

Abstract: An electronic system for a drug delivery device including a dose setting and drive mechanism, a communication unit, an electronic control unit, and an electrical use detection. The dose setting and drive mechanism includes a first member and a second member that move relative to each other at least in the dose delivery operation and/or in the dose setting operation of the drug delivery device. The electronic system has a first state in which the communication unit is not activated and a second state in which the communication unit is activated. The electrical use detection unit is configured to generate a first signal indicative that the user has commenced or finished the relative movement between the first member and the second member. The electronic control unit is configured to switch the electronic system from the first state into the second state in response to the first signal.

Abstract: The disclosure relates to a drug delivery device for expelling a pre-determined or pre-settable amount of a liquid medicament formulation which improves the stalling behavior and indicates the stalling state to the user. The device comprises: a medicament reservoir attached to a housing and an expelling mechanism configured for acting against the medicament reservoir in order to expel a portion of the liquid medicament formulation therefrom, the expelling mechanism comprising an arrangement of a threaded nut in a fixed axial relation to the housing and a lead screw in threaded engagement with the threaded nut, the threaded nut and the lead screw being rotatable relative to each other by a rotational input interface, a mechanical energy reservoir (for storing energy, the stored energy being releasable from the energy reservoir by a rotational interface, a drive train having upstream and downstream interfaces; and a trigger movable relative to the housing.

Abstract: A drug delivery device includes a housing, a fluid reservoir received within the housing, a drive assembly configured to dispense fluid from the fluid reservoir, a needle hub actuator attached to the housing, and a needle hub at least partially received by the housing. The needle hub includes a hub body, a needle holder with a needle attached to the needle holder, and a cannula holder with a cannula attached to the cannula holder. The needle hub actuator is configured to move the needle holder and the cannula holder from a retracted position where the needle and the cannula are positioned within the hub body to an insertion position where the needle and the cannula are positioned within the hub body. The needle hub is detachable from the housing.

Abstract: An electronic system for a drug delivery device comprising a dose setting and drive mechanism with a first member, wherein the first member performs a specific movement relative to a second member during a dose delivery operation. The electronic system comprises a first switch configured to be activated by a pre-defined user operation, wherein the pre-defined user operation includes a user operation that is expected in conjunction with dose delivery operation, a second switch for indicating the specific movement, and a sensor arrangement for a motion sensor system for providing position data that allows to distinguish between different positions of the first member relative to the second member.

Abstract: A drug delivery device, comprising: a housing, a plunger arranged within the housing and movable along the longitudinal axis and adapted to push a piston within a container in a distal direction, the plunger being prevented from rotating and comprising an external thread, a drive nut arranged within the housing and comprising an internal thread engaging the thread of the plunger, an axial bearing arranged between the drive nut and the housing to limit axial movement of the drive nut relative to the housing, a mechanism configured to exert a force on the drive nut in the distal direction through a rotatable component coupled to the drive nut for joint rotation and at least one non-rotatable component, wherein a bearing is arranged between the at least one rotatable component and the at least one non-rotatable component, the bearing having a smaller diameter than the axial bearing.

Abstract: The present disclosure is generally directed to a clicker arrangement for use in a drug delivery device, i.e. a handheld injection device for selecting and dispensing a number of user variable doses of a medicament. The clicker arrangement comprises a first element rotatable at least in a first direction and a second, non-rotatable element. The first element is axially displaceable relative to the second element between a first position and a second position. One of the elements comprises a clicker arm and the other comprises a protrusion wherein upon rotation of the first element in the first direction relative to the second element the clicker arm is elastically deflectable in a radial direction by the protrusion and relaxable in the opposite radial direction upon disengagement with the protrusion thereby generating an audible and/or tactile feedback signal.

Abstract: The disclosure relates to a drug delivery device for expelling a pre-determined or pre-settable amount of a liquid medicament formulation which improves the stalling behavior and indicates the stalling state to the user. The device comprises: a medicament reservoir attached to a housing and an expelling mechanism configured for acting against the medicament reservoir in order to expel a portion of the liquid medicament formulation therefrom, the expelling mechanism comprising an arrangement of a threaded nut in a fixed axial relation to the housing and a lead screw in threaded engagement with the threaded nut, the threaded nut and the lead screw being rotatable relative to each other by a rotational input interface, a mechanical energy reservoir (for storing energy, the stored energy being releasable from the energy reservoir by a rotational interface, a drive train having upstream and downstream interfaces; and a trigger movable relative to the housing.

Abstract: The present disclosure relates to a drug delivery device comprising a dose setting member for setting user variable doses of a medicament and a display for indicating the dose set by the dose setting member. The display comprises a number wheel, which is rotationally coupled to the dose setting member and is provided with a series of markings on its outer circumference, and at least one prism deviating the image of the markings of the number wheel, e.g. by 90°.

Abstract: The present disclosure is generally directed to a drive mechanism for use in a drug delivery device having a cylindrical cartridge, i.e. a handheld injection device for selecting and dispensing a number of user variable doses of a medicament. The drive mechanism includes a base element, a toothed piston rod, which is guided within and movable relative to the base element, and a drive gear having a pinion, which is rotatably held in the base element and in meshed engagement with the toothed piston rod. The toothed piston rod includes multiple rigid rod pieces which are connected by hinges. The rigid rod pieces comprise a flat plate provided with a straight toothed rack.

Abstract: The present disclosure relates to an injection device for expelling of a number of preset or user-selectable doses of a medicament, the injection device comprising: —an elongated housing (10; 310; 410) extending along a longitudinal axis (1), —an expelling mechanism (2) comprising a trigger (70) and a piston rod (30), —a dose setting mechanism (3) comprising a rotatable member (260; 360; 460; 560) and a counterpart member (240; 340; 440; 540), wherein the counterpart member and the rotatable member comprise a first mechanical code (242; 342; 442; 542) and a second mechanical code (262; 362; 462; 562), respectively, —wherein for setting of a dose the rotatable member (260; 360; 460; 560) is rotatable relative to the housing (10; 310; 410) and relative to the counterpart member (240; 340; 440; 40) within a range of numerous rotational states, and wherein during setting of the dose the rotatable member (260; 360; 460; 560) is constrained along the longitudinal axis (1) relative to the housing (10; 310; 410) or r

Abstract: A drive train (T) for a wind-up injection device (1) for injecting a liquid drug comprises a torsional energy storage (9) adapted to be loaded or unloaded by a rotatable element (6), a rotatable user handle (8), a rotationally driveable expelling mechanism (5) adapted to expel the liquid drug and a clutch element (12) coupled with the torsional energy storage (9) via the rotatable element (6) and comprising a ratchet (12.4) for maintaining the rotatable element (6) at one of a number of discrete angular positions against the torque of the torsional energy storage (9). The clutch element (12) is adapted to transmit a torque from the user handle (8) via the rotatable element (6) to the torsional energy storage (9) or alternatively from the torsional energy storage (9) via the rotatable element (6) to the expelling mechanism (5), wherein the ratchet (12.4) is switchable from one position to an adjacent position by a torque transmitted from the user handle (8) to the torsional energy storage (9).