Abstract: An add-on device adapted to be releasably mounted on a drug delivery device, the add-on device comprising an outer assembly with an add-on dose setting member adapted to be coupled to the outer housing of a pen housing, as well as an inner assembly engaging the pen dose setting member and being in rotational engagement with the add-on dose setting member during dose setting. The invention addresses the issue of preventing transfer of movement from the add-on dose setting member to the inner assembly during dose expelling, which in accordance with the invention is realized by rotationally de-coupling the inner and outer assembly during dose expelling.

Abstract: An add-on device adapted to be releasably mounted on a drug delivery device, the add-on device comprising an outer assembly with an add-on dose setting member adapted to be coupled to the outer housing of a pen housing, as well as an inner sensor assembly engaging the pen dose setting member and being in rotational engagement with the add-on dose setting member during dose setting. The invention addresses the issue of providing a stable inner platform for the sensor means, which in accordance with the invention is realized by actuating a clutch between the pen housing and the pen dose setting member during dose sensing, this preventing to a high degree that the inner sensor assembly rotates relative to the drug delivery housing during actuation of the drug expelling means.

Abstract: A drug delivery assembly comprising a magnetic indicator and a sensor system is provided. The indicator is arranged to rotate and move axially relative to a housing component and corresponding to a reference axis, the amount of rotation being indicative of the size of an expelled dose amount. The sensor system comprises a sensor component adapted to measure a property of the indicator indicative of a rotational position and/or a rotational movement of the indicator. The sensor component forms part of release assembly adapted to be moved into engagement with a release member to release a set dose, and subsequently to move axially together with indicator.

Abstract: An add-on device adapted to be releasably mounted on a drug delivery device, the add-on device comprising an outer assembly with an add-on dose setting member adapted to be coupled to the outer housing of a pen housing, as well as an inner assembly engaging the pen dose setting member and being in rotational engagement with the add-on dose setting member during dose setting. The invention addresses the issue of preventing transfer of movement from the add-on dose setting member to the inner assembly during dose expelling, which in accordance with the invention is realized by rotationally de-coupling the inner and outer assembly during dose expelling.

Abstract: Drug delivery device adapted to receive a drug-filled cartridge comprises a piston drive member for expelling a dose of drug from a loaded cartridge, a motor for driving the piston drive member, a rechargeable electric power source, an electrical connector allowing an external connector of a power source to be connected for recharging the power source, and a controller for controlling operation of the motor. The controller is adapted to detect a condition indicative of an external power source being connected to the electrical connector and subsequently disable the expelling assembly to thereby prevent that drug can be expelled from a loaded cartridge when an external power source has been connected to the electrical connector.

Abstract: Drug delivery device adapted to receive a cartridge, comprising a drive tube with an inner thread, a motor assembly comprising a drive shaft and being adapted to be received inside the drive tube, a drive member attached to the drive shaft and with an outer thread in engagement with the drive tube inner thread. The drive tube is arranged axially displaceable but non-rotational relative to the motor assembly, whereby rotation of the drive member results in axial, non-rotational displacement of the drive tube. To provide flexibility the drive shaft is connected to the drive member via a first flexible joint, and the motor assembly proximal portion is connected to a support structure via a second flexible joint.

Abstract: Drug delivery device adapted to receive a cartridge, comprising drug expelling means with a piston driver comprising a distal end adapted to abut and axially move the piston of a loaded cartridge to thereby expel an amount of drug from the cartridge, and a motor assembly for moving the piston driver. The piston driver distal end comprises flexible centring means adapted to frictionally engage a cartridge inner surface proximally of the piston, thereby centring the cartridge and the piston driver distal end relative to the each other.

Abstract: Drug delivery device adapted to receive a cartridge, comprising a piston driver adapted to expel an amount of drug from a received cartridge, and a base member adapted to engage a cartridge and position the cartridge relative to the piston driver, the base member comprising a main portion with a central passage, a portion of the piston driver being arranged axially displaceable through the passage, the piston driver distal end being arranged distally of the central passage, and flexible centring means adapted to receive the proximal end of a cartridge and centre it relative to the central opening and thereby to the piston driver.

Abstract: A drug delivery system (1) comprising first (35) and second reservoir units (30) with first and second identifiers (32), and a main unit (10) adapted to receive either of the first (35) and second reservoir units (30) in a mounted position. The main unit (10) comprises drug expelling means having dose setting means (11, 1, 14, 15, 19) comprising a rotational dose setting member allowing a user to set a desired dose size for the given drug, the dose size being set in fixed increments for a given state. The drug expelling means has a first state in which an increment corresponds to a first volume of drug, and a second state in which an increment corresponds to a second volume of drug, wherein the drug expelling means is set in the first state by means of the first identifier when a first reservoir unit is mounted, and the drug expelling means is set in the second state by means of the second identifier when a second reservoir unit is mounted.

Abstract: Drug delivery device adapted to receive a cartridge, comprising a drive tube with an inner thread, a motor assembly comprising a drive shaft and being adapted to be received inside the drive tube, a drive member attached to the drive shaft and with an outer thread in engagement with the drive tube inner thread. The drive tube is arranged axially displaceable but non-rotational relative to the motor assembly, whereby rotation of the drive member results in axial, non-rotational displacement of the drive tube. To provide flexibility the drive shaft is connected to the drive member via a first flexible joint, and the motor assembly proximal portion is connected to a support structure via a second flexible joint.

Abstract: A drug delivery device comprises a shield (30) moveably mounted to a main portion and being displaceable by a user between a shielding and a non-shielding position, wherein a needle assembly (50) can be mounted on a reservoir, the shield covering the needle assembly in the shielding position. The needle assembly is moveable between a dis-connected and connected position in fluid communication with the reservoir. In such an arrangement a mounted needle assembly is moved from the dis-connected to the connected position when the shield is moved from the shielding to the non-shielding position, and moved from the connected to the dis-connected position when the shield is moved from the non-shielding to the shielding position.

Abstract: Drug delivery device adapted to receive a drug-filled cartridge comprises a piston drive member for expelling a dose of drug from a loaded cartridge, a motor for driving the piston drive member, a rechargeable electric power source, an electrical connector allowing an external connector of a power source to be connected for recharging the power source, and a controller for controlling operation of the motor. The controller is adapted to detect a condition indicative of an external power source being connected to the electrical connector and subsequently disable the expelling assembly to thereby prevent that drug can be expelled from a loaded cartridge when an external power source has been connected to the electrical connector.

Abstract: A transmission comprises a first gear wheel and a second gear wheel with a threaded bore, and a threaded non-rotationally arranged rod in threaded engagement with the threaded bore, rotation of the second gear wheel thereby providing axial movement of the rod. The first and second gear wheel are arranged in a common plane and in rotational engagement with each other, wherein the combined second gear wheel and rod are arranged to pivot corresponding to a centre point defined by the intersection of the rod axis and the common plane, whereby the rod, with the gear wheels in engagement, can be arranged out of alignment with the first gear wheel axis.

Abstract: Drug delivery device adapted to receive a drug cartridge, comprising a cartridge holder, an expelling assembly with a piston rod and a coupling. The device further comprises user operated actuation means actuatable from a loading state to an intermediate state, and from the intermediate state to an operational state, wherein the cartridge holder is actuated from a receiving state to a holding state when the actuation means is actuated from the loading state to the intermediate state, and the coupling is actuated from a free resetting state to a locked operational state when the actuation means is actuated from the intermediate state to the operational state.

Abstract: A drug delivery device comprises a shield (30) moveably mounted to a main portion and being displaceable by a user between a shielding and a non-shielding position, wherein a needle assembly (50) can be mounted on a reservoir, the shield covering the needle assembly in the shielding position. The needle assembly is moveable between a dis-connected and connected position in fluid communication with the reservoir. In such an arrangement a mounted needle assembly is moved from the dis-connected to the connected position when the shield is moved from the shielding to the non-shielding position, and moved from the connected to the dis-connected position when the shield is moved from the non-shielding to the shielding position.

Abstract: A drug delivery system (1) comprising first (35) and second reservoir units (30) with first and second identifiers (32), and a main unit (10) adapted to receive either of the first (35) and second reservoir units (30) in a mounted position. The main unit (10) comprises drug expelling means having dose setting means (11, 1, 14, 15, 19) comprising a rotational dose setting member allowing a user to set a desired dose size for the given drug, the dose size being set in fixed increments for a given state. The drug expelling means has a first state in which an increment corresponds to a first volume of drug, and a second state in which an increment corresponds to a second volume of drug, wherein the drug expelling means is set in the first state by means of the first identifier when a first reservoir unit is mounted, and the drug expelling means is set in the second state by means of the second identifier when a second reservoir unit is mounted.