Abstract: A supplemental device for attachment to an injection device, the supplemental device comprising: an electromechanical switch arrangement having an open state and a closed state, the electromechanical switch arrangement comprising a protrusion configured to contact a surface of the injection device when a dose of zero units is dialled into the injection device, wherein the state of the switch arrangement is configured to change when a dose dialled into the attached injection device is decreased from one unit to zero units; and a processor arrangement configured to: detect one or more changes in the state of the electromechanical switch arrangement; and determine from the one or more state changes that a dose of zero units is dialled into the injection device.

Abstract: A drive mechanism of a drug delivery device and a respective drug delivery device for setting and dispensing of a dose of a medicament are presented, where the drive mechanism has an elongated housing extending in an axial direction, a piston rod to operably engage with a piston of a cartridge containing the medicament, a dosing arrangement manually and axially displaceable relative to the housing for setting and dispensing of the dose, and an accessory drive operably engaged with the piston rod to support a manually operated dose dispensing displacement of the dosing arrangement.

Abstract: A data collection device for attachment to an injection device, such as an injector pen, includes a sensor arrangement to detect movement of a movable component of the injection device relative to the data collection device during delivery of a medicament by the injection device, and a processor arrangement configured to, based on said detected movement, determine a medicament dosage administered by the injection device. The processor arrangement may monitor the time that has elapsed since the medicament dosage was administered, and control a display to show the mediacament dosage and elapsed time to provide a memory aid to the user. In an example embodiment, the sensor arrangement includes an optical encoder and the movable component includes a plurality of light barrier formations. The movable component may be a number sleeve that provides a visual indication of a dose programmed into the injection device.

Abstract: A drive mechanism of an injection device for setting and dispensing of a dose of a medicament includes a body accommodating a cartridge filled with a medicament, an insert axially displaceable inside the body between a proximal operating position and a distal reset position, a piston rod to operably engage with a piston of the cartridge, a drive sleeve rotationally coupled with the piston rod and is rotationally lockable to the body for setting of a dose and rotationally releasable from the body for dispensing of a dose, respectively. The drive sleeve is axially displaceable relative to the body from a proximal operating position into a distal reset position through an axial connection of the insert and the drive sleeve, where the drive sleeve is rotationally released from the body when in the distal reset position.

Abstract: 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.

Abstract: The invention relates to an arrangement for detecting a position of a plunger (4) relative to a bung (3) in a drug cartridge (1), comprising a proximity sensor (5) located close to a distal end (6) of the plunger (4) facing the bung (3) and aligned to receive light reflected by the bung (3).

Abstract: The present disclosure is generally directed to a drug delivery device for selecting and dispensing a number of user variable doses of a medicament and a housing for such a device. The housing for the drug delivery device comprises an outer housing, a housing insert, which is rotationally constrained to the outer housing and guided axially movable relative to the outer housing, and a cartridge holder. The cartridge holder is attachable to the distal end of the outer housing by at least one groove and at least one lug. The cartridge holder comprises proximally facing ramps and the housing insert comprises corresponding, distally facing ramps. The groove comprises a first sloped portion inclined such that upon a rotational attaching movement, the cartridge holder is moved proximally relative to the outer housing and a second sloped portion inclined such that upon a rotational attaching movement, the cartridge holder is moved distally relative to the outer housing.

Abstract: A drug delivery device comprising: a housing; a cylindrical member rotatably supported within the housing; and a plurality of sensors; wherein: the outer surface of the cylindrical member is provided with a single track, the track forming an encoder and having a plurality of first track segments and a plurality of second track segments arranged along the length of the track which are respectively capable of inducing first and second responses in the sensors; and in each rotational position of the cylindrical member relative to the housing at least one different first track segment is capable of inducing a first response in at least one said sensor, thereby enabling the rotational position of the cylindrical member relative to the housing to be determined.

Abstract: 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.

Abstract: The present disclosure is generally directed to a resettable drug delivery device for selecting and dispensing a number of user variable doses of a medicament. The drug delivery device comprises a housing, a cartridge holder releasably attached to the distal end of the housing, a piston rod engaging a housing insert and a drive member, a dose setting member guided within the housing to allow rotation of the dose setting member during dose setting and dose dispensing, a clutch for rotationally coupling the drive member and the dose setting member, and a locking element which is rotationally constrained to the housing and is axially movable relative to the housing between a proximal dose setting position and a distal resetting position.

Abstract: The invention relates to an arrangement for detecting a position of a plunger (4) relative to a bung (3) in a drug cartridge (1), comprising a proximity sensor (5) located close to a distal end (6) of the plunger (4) facing the bung (3) and aligned to receive light reflected by the bung (3).

Abstract: A supplemental device for attachment to an injection device, the supplemental device having a housing containing at least two electromechanical switches each having an open state and a closed state and a protrusion associated with each switch configured to protrude from the housing so as to contact a rotatable surface of the injection device while the supplemental device is attached to the injection device; and a processor arrangement configured to detect a change in the state of each of the switches; and to determine a direction of rotation of the rotatable surface of the injection device from the detected state changes.

Abstract: An assembly for a drug delivery device is provided, the assembly comprising a feedback feature. The feedback feature is configured to indicate an end of the dispense operation to a user by giving an audible and/or tactile feedback.

Abstract: An optical decoding system comprising: a first optical sensor configured to be directed at a first rotatable component of a drug delivery device; a second optical sensor configured to be directed at a second rotatable component of a drug delivery device; and a processor configured to: receive signals from the first optical sensor, wherein the signals from the first optical sensor represent encoded dosage values present on the first rotatable component; receive signals from the second optical sensor, wherein the signals from the second optical sensor represent whether the second rotatable component is rotating or not; and to determine from the received signals whether the drug delivery device is in a drug dose dialling mode or a drug dose delivery mode.

Abstract: A data collection device for attachment to an injection device, such as an injector pen, includes a sensor arrangement to detect movement of a movable component of the injection device relative to the data collection device during delivery of a medicament by the injection device, and a processor arrangement configured to, based on said detected movement, determine a medicament dosage administered by the injection device. The processor arrangement may monitor the time that has elapsed since the medicament dosage was administered, and control a display to show the mediacament dosage and elapsed time to provide a memory aid to the user. In an example embodiment, the sensor arrangement includes an optical encoder and the movable component includes a plurality of light barrier formations. The movable component may be a number sleeve that provides a visual indication of a dose programmed into the injection device.

Abstract: An assembly for a drug delivery device is provided, the assembly comprising a feedback feature. The feedback feature is configured to indicate an end of the dispense operation to a user by giving an audible and/or tactile feedback.

Abstract: An assembly for a drug delivery device is provided, the assembly comprising an actuator which is configured to be operated in order to dispense a dose of medication and a feedback feature being configured to give a feedback signal to a user at the end of a dwell period after the actuator has reached an end position.

Abstract: A drug delivery device comprising: a housing; a plurality of sensors; and a cylindrical member supported within the housing, an outer surface of said cylindrical member being provided with a helical track, the helical track comprising track segments of a first type and track segments of a second type, the first and second types of track segments being respectively capable of inducing first and second responses in the sensors; wherein: the helical track has a width; the helical track includes across the width of the helical track at least one track segment of the first type and at least one track segment of the second type at plural positions along a length of the helical track; the device is configured such that during a first phase of a drug delivery operation the helical track is moved axially, without rotation, relative to the plurality of sensors between a first position and a second position, and during a second phase of the drug delivery operation the track is moved helically relative to the plurality o