A drug delivery device for administering a predefined dose of a medicament comprising a housing is presented where the housing includes a body to accommodate a drive mechanism, a cartridge holder to accommodate a cartridge having a piston slidably disposed therein in an axial direction (z), and an interconnection between cartridge holder and body. The interconnection has, at least one displaceable or resiliently deformable latch element to mate with a corresponding bearing, and the latch element is displaceable or deformable in a direction (z, w) extending substantially parallel to a circumferential side wall of the body or cartridge holder.

Injecting device with dose resetting mechanism enables release energy accumulated in spring means (17) and causes automatically the back movement of an indicating element (16) to its initial position without causing any axial movement of a threaded piston rod (10), said actions being initiated by one movement of a dose setting element (4) in the direction opposite to that when setting a dose. Reset clutch (13) is made as an axially sliding, shaped coupling element moved by means of the dose setting element (4), and moreover this reset clutch (13) is functionally connected with a drive unit destined to co-operate with the spring means (17) in such a way that when this reset clutch (13) is released, said drive unit is disconnected from the spring means (17) retaining the connection of this spring means (17) with the indicating element (16).

A medication delivery device and/or dosing mechanisms suitable for use in medication delivery devices, in particular in pen-type injectors, preferably having a dose setting system and a drive device enabling the administration of a medicinal product from a single- or multi-dose medication cartridge.

The invention relates to a medicament delivery device comprising a locking mechanism (5) for locking a plunger rod (4). The locking mechanism (5) comprises a locking wheel (6) and locking means (7), said locking means (7) being moveable between an active position where the locking means (7) prevent the locking wheel (6) from rotation and an inactive position where the locking means (7) allow the locking wheel (6) to rotate, wherein said plunger rod (4) extends through an opening in the locking wheel (6); and a resilient member (8) arranged at the moveable locking means (7) and being arranged to act on the moveable locking means (7) to displace said movable looking means (7) towards the inactive position where the locking means (7) allow the locking wheel (6) to rotate.

A medication injection pen is provided comprising a housing (218), for housing a dose set knob (220), a leadscrew (226), a driver (224), a setback member (222), and a dose stop member (228). The dose set knob (220) is rotatable with respect to said housing (218) to set a desired injection dose, and comprises at least one internal thread (291). The leadscrew (226) includes a thread element by which it is advanceable in a first direction via a corresponding thread engagement, said first direction being that which expels medication from a cartridge (36). The driver (224) is rotationally fixed to said leadscrew (226) for preventing relative rotation therebetween, said driver (224) being rotatable in a first direction to rotate and advance said leadscrew (226) in said first direction. The setback member (222) is rotationally fixed to said driver (224) for preventing relative rotation therebetween.

A drug delivery device comprises a medicament reservoir attached to a housing, a drive mechanism comprising a plunger movable relative to the housing, a dose selecting element releasably coupled to the drive mechanism and rotatable relative to the housing, a trigger axially movable relative to the housing, and a limiter selectively permitting and preventing axial movement of the trigger depending on the amount of a selected dose. The limiter is constrained to the dose selecting element and to the trigger. One of the limiter or a component part is axially coupled to the housing comprises a track which is in engagement with a blocking feature of the other of the limiter or the component part axially coupled to the housing. The track comprises a narrow section limiting relative movement between the track and the blocking feature and a wide section permitting relative movement between the track and the blocking feature.

The invention relates to a torsion spring driven injection device for ejecting set doses of a liquid drug. In a first aspect the torsion spring driven injection device is provided with a blocking structure which is operated by the rotatable display element such that the set dose can only be expelled when a certain minimum dose size has been set. In a second aspect the torsion spring driven injection device is provided with a release mechanism which secures that the set dose can only be expelled as one single full dose in one stroke. The two aspects can easily be combined such that the predetermined minimum dose size most be expelled as one single dose.

A device includes a housing having a first end, a second end, a first cylinder, a second cylinder parallel to the first cylinder, and a channel connecting the first and second cylinders near the second end. A piston is positioned within the first cylinder. A cartridge containing a therapeutic agent is positioned within the second cylinder. A needle hub containing a needle is positioned within the second cylinder between the cartridge and the first end. A septum is positioned at the first end. A fluid is positioned within the first cylinder. When the device is activated, the piston travels toward the second end, forcing some of the fluid to travel from the first cylinder into the second cylinder, forcing the cartridge toward the first end, causing the needle to penetrate the cartridge and the septum, and causing at least some of the therapeutic agent to extrude through the needle

The disclosure concerns an insulin delivery arrangement including a hand-operable insulin delivery device which includes an adjusting unit for presetting of an insulin dose and an applicator unit that can be triggered to deliver the preset insulin dose to a user. In order to ease burden of insulin dosing, a dose converter is adapted to receive an actual setting for the insulin dose as an input and to provide as an output a carbohydrate value equivalent to an amount of meal carbohydrates which can be compensated by the respective insulin dose. A display is used for displaying the carbohydrate value in parallel to the insulin dose.

Disclosed herein is an auto injector with a bi-stable clutch plate.