Abstract: A drug delivery device for setting and dispensing doses of a liquid drug is described. The device includes a housing and a dose setting and drive mechanism with a dose setting member and a dose setting drum. The dose setting and drive mechanism is configured to perform a dose setting operation for setting a dose to be delivered by the drug delivery device by rotating the dose setting member relative to the housing and a dose delivery operation for delivering the set dose during rotation of the dose setting drum relative to dose setting member the housing. The dose setting drum includes an array of encoder features at its proximal end. The dose setting member has at least one aperture located in a proximal end surface that is coincident with at least a portion of the array of encoder features of the dose setting drum.

Abstract: The present disclosure relates to a drug delivery device for setting and dispensing doses of a liquid drug. The device comprises a housing and a dose setting and drive mechanism with a dose setting member. The dose setting and drive mechanism is, at least partially, arranged within the housing and is configured to perform a dose setting operation for selecting a dose to be delivered by the drug delivery device by moving the dose setting member relative to the housing and a dose delivery operation for delivering the set dose by axially displacing the dose setting member along an axis. The maximum radial extension perpendicular to the axis of the dose setting member is smaller than the maximum radial extension of a region of the housing located adjacent to the dose setting member.

Abstract: The present disclosure refers to a drug delivery device for setting and dispensing doses of a liquid drug which may be used together with a module for detecting the amount of a dose selected and/or delivered. The device comprises a housing and a dose setting and drive mechanism with a dose setting member. The dose setting and drive mechanism is configured to perform a dose setting operation for selecting a dose to be delivered by rotating the dose setting member relative to the housing and a dose delivery operation for delivering the set dose by pushing the dose setting member axially towards the housing without relative rotation therebetween. The dose setting member comprises a set of axially directed stop teeth formed at its distal end which are configured to engage with a set of counterstop teeth located on the housing at the end of the dose delivery operation.

Abstract: A drug delivery device for setting and dispensing doses of a liquid drug. The device comprises a housing and a dose setting and drive mechanism with a dose setting member and a dose setting drum. The dose setting and drive mechanism is configured to perform a dose setting operation for selecting a dose to be delivered, and a dose delivery operation for delivering the set dose. The dose setting drum comprises a set of clutch teeth that are engagable with a mating set of teeth on the dose setting member. The clutch teeth and the mating teeth are engaged during a dose setting operation to prevent rotation therebetween and the clutch teeth and the mating teeth are disengaged during a dose delivery operation allowing relative rotation between the dose setting drum and the dose setting member. The clutch teeth are formed on an external surface of the dose setting drum.

Abstract: A needle hub for a drug delivery device includes a needle holder and a needle attached to the needle holder, a needle actuation assembly configured to move the needle holder from a retracted position, to an insertion position, and back to the retracted position, and a pressure interlock comprising an inlet configured to be in fluid communication with a fluid source, an outlet in fluid communication with the needle, and a lock member. The lock member having a first position where the lock member prevents actuation of the needle actuation assembly and a second position where the lock member allows actuation of the needle actuation assembly. The lock member is moved from the first position to the second position based on a pressure within the pressure interlock.

Abstract: The present disclosure refers to a housing element for a drug delivery device. The housing element comprises longitudinal axis and defines an interior space for receiving components of a drive mechanism of the drug delivery device and at least a portion of a cartridge of the drug delivery device. The housing element comprises an engagement feature for axially constraining the housing element to a cartridge holder of the drug delivery device. In order to constrain the cartridge in the housing element, it further comprises at least one crush web protruding radially inwards into the interior space. The at least one crush web is angled relative to the longitudinal axis of the housing element by at least 3° such that when the cartridge is introduced into the interior space the at least one crush web folds radially outwards.

Abstract: A needle hub for a drug delivery device includes a needle holder and a needle attached to the needle holder, a needle actuation assembly configured to move the needle holder from a retracted position, to an insertion position, and back to the retracted position, and a pressure interlock comprising an inlet configured to be in fluid communication with a fluid source, an outlet in fluid communication with the needle, and a lock member. The lock member having a first position where the lock member prevents actuation of the needle actuation assembly and a second position where the lock member allows actuation of the needle actuation assembly. The lock member is moved from the first position to the second position based on a pressure within the pressure interlock.

Abstract: The present invention refers to a drug delivery device comprising a housing (5, 10) with an opening (12), a piston rod (11) having a proximal end and a distal end, at least a portion with an interface (14) adapted to engage the opening (12) for guiding the piston rod (11) during a distal or proximal movement of the piston rod (11) relative to the housing (5, 10) and at least one first attachment element (15) located at the distal end, and a bearing (16) with at least one second attachment element (17, 18) for rotatable attachment of the bearing (16) at the distal end of the piston rod (11). The at least one first attachment element (15) and/or the at least one second attachment element (17, 18) is elastically deformable in a radial direction for snap engagement of the piston rod (11) and the bearing (5, 10).