Abstract: The invention relates to an injection device wherein the drive element transferring rotation to the piston rod is divided into two elements which are able to move axially in relation to each other such that the drive mechanism can be released to allow the user to reset the piston rod and change the cartridge.

Abstract: The present invention provides a drug delivery device (1) of the type in which a piston rod (10, 110) extends along a reference axis and is forced to rotate in an expelling direction about the reference axis during a dose expelling event to cause an expelling of drug from a drug reservoir (30, 130), and a resilient ratchet element (12) is operatively coupled with the piston rod (10, 110) and undergoes a deflecting motion comprising elastic deformation and recovery in response to an expelling of a predetermined dose increment, which deflecting motion occasions a velocity fluctuation of the piston rod (10, 110), comprising: a rotator module (50, 150) operatively coupled with the piston rod (10, 110) and configured to rotate about the reference axis against a rotation resisting force in response to a rotation of the piston rod (10, 110) in the expelling direction, the rotator module (50, 150) comprising a sensor system (70, 71; 170, 183; 270, 183) for monitoring a torque transferred by the piston rod (10, 110) d

Abstract: A drug delivery device comprising a rotatable scale drum, a trigger member, an actuation member, a trigger spring acting on the trigger member and being energized by movement of the actuation member, as well as an end-of-dose switch adapted to be actuated by movement of the trigger member. The trigger member is adapted to be arranged in an axially supported position against the action of the energized trigger spring, and released from the axially supported position when the scale drum is rotated from a set position to an end-of-dose position, whereby the trigger member is moved axially by the trigger spring, the end-of-dose switch thereby being actuated.

Abstract: Drug delivery device adapted to expel a set dose, comprising an expelling mechanism with a drive spring, a dose setting mechanism with first and second dose setting ratchet parts, a bias spring as well as control means. The control means is adapted to rotate the second ratchet part in a first direction to thereby set a dose when rotating the dose setting member in the first direction, and move the ratchet parts axially out of engagement with each other when the dose setting member is rotated in the opposite direction. When the first and second ratchet parts have been axially disengaged, the drive spring will rotate the second ratchet part in the second direction to thereby reduce the set dose, the bias spring moving the ratchet parts axially into engagement with each other again, this resulting in the set dose being reduced corresponding to one tooth of the ratchet mechanism.

Abstract: Drug delivery device adapted to expel a set dose, comprising an expelling mechanism with a drive spring, a dose setting mechanism with first and second dose setting ratchet parts, a bias spring as well as control means. The control means is adapted to rotate the second ratchet part in a first direction to thereby set a dose when rotating the dose setting member in the first direction, and move the ratchet parts axially out of engagement with each other when the dose setting member is rotated in the opposite direction. When the first and second ratchet parts have been axially disengaged, the drive spring will rotate the second ratchet part in the second direction to thereby reduce the set dose, the bias spring moving the ratchet parts axially into engagement with each other again, this resulting in the set dose being reduced corresponding to one tooth of the ratchet mechanism.

Abstract: A power unit (15) for use in an autoinjector (10) for driving a plunger (500) distally along an axis in an expelling movement so as to expel a drug from a held drug container, the power unit (15) comprising: a) a plunger (500) comprising retaining geometries (515) and defining radially protruding click protrusions (525), b) a drive spring (550) arranged in a tensed state with a force biasing the plunger (500) distally, and c) a power base (400) coupled to the drive spring (550) and the plunger (500), the power base (400) comprising a base part grounding the drive spring (550), and retaining elements (410) releasably engaging retaining geometries (515) of the plunger (500), the power base (400) further defining a resilient click arm (410) configured to cooperate with the click protrusions (525) of the plunger (500), the click arm (410) being moved radially to provide a click noise for each click protrusion that passes the click arm during the expelling movement, wherein the click arm (410) comprises a strainin

Abstract: An autoinjection device (10) for expelling a dose of drug from a held drug container (100) is described.

Abstract: A syringe holder (200) comprising: a body (210) extending along a central longitudinal axis and adapted to receive the barrel (110) of a syringe (100), wherein the body (210) includes at least two body sections (240) disposed around the central longitudinal axis, the body sections (240, 240A, 240B) having distal ends with shoulder sections (250) adapted for being received in a circumferential gap (150) between the barrel (110) of the syringe (100) and a needle shield (120) covering a needle (130) of the syringe to retain the syringe (100) so as to prevent the syringe from moving distally (D) relative to the syringe holder (200), wherein the body (210) further comprises a plurality of expandable connector arrangements (230) each interconnecting pairs of the at least two body sections (240, 240A, 240B) so that the body sections (240, 240A, 240B) and the expandable connector arrangements (230) form a closed loop in the circumferential direction around the barrel (110) of a syringe (100) held by the body (210), w

Abstract: A drug delivery device comprises an housing, an axially displaceable piston rod, a rotatable drive member, a spring housing, a torsion drive spring coupled to the spring housing respectively the drive member, dose setting means allowing a user to simultaneously set a dose amount to be expelled and strain the torsion drive spring correspondingly by rotation of the drive member, and a release member being axially moveable relative to the housing between a proximal initial position and an actuated distal release position. The spring housing is helically coupled to the housing such that the spring exerts a tangential force on the spring housing to thereby bias the spring housing in the proximal direction, whereby the spring housing thereby exerts a proximally directed biasing force on the release member. The spring housing can be moved helically in the distal direction when a distally directed force is exerted on the release member.

Abstract: A drug delivery device comprising a rotatable scale drum, a trigger member, an actuation member, a trigger spring acting on the trigger member and being energized by movement of the actuation member, as well as an end-of-dose switch adapted to be actuated by movement of the trigger member. The trigger member is adapted to be arranged in an axially supported position against the action of the energized trigger spring, and released from the axially supported position when the scale drum is rotated from a set position to an end-of-dose position, whereby the trigger member is moved axially by the trigger spring, the end-of-dose switch thereby being actuated.

Abstract: A drug delivery device comprises an housing, an axially displaceable piston rod, a rotatable drive member, a spring housing, a torsion drive spring coupled to the spring housing respectively the drive member, dose setting means allowing a user to simultaneously set a dose amount to be expelled and strain the torsion drive spring correspondingly by rotation of the drive member, and a release member being axially moveable relative to the housing between a proximal initial position and an actuated distal release position. The spring housing is helically coupled to the housing such that the spring exerts a tangential force on the spring housing to thereby bias the spring housing in the proximal direction, whereby the spring housing thereby exerts a proximally directed biasing force on the release member. The spring housing can be moved helically in the distal direction when a distally directed force is exerted on the release member.

Abstract: Drug delivery device adapted to expel a set dose, comprising an expelling mechanism with a drive spring, a dose setting mechanism with first and second dose setting ratchet parts, a bias spring as well as control means. The control means is adapted to rotate the second ratchet part in a first direction to thereby set a dose when rotating the dose setting member in the first direction, and move the ratchet parts axially out of engagement with each other when the dose setting member is rotated in the opposite direction. When the first and second ratchet parts have been axially disengaged, the drive spring will rotate the second ratchet part in the second direction to thereby reduce the set dose, the bias spring moving the ratchet parts axially into engagement with each other again, this resulting in the set dose being reduced corresponding to one tooth of the ratchet mechanism.

Abstract: A handheld injection device (10) comprising an needle cannula, a reservoir configured for containing a liquid drug to be dispensed, a piston, a trigger button (22), an elongated, hollow outer housing (20) in which the reservoir is positioned, the needle cannula being in liquid communication with the reservoir and extending from one end of the housing, wherein the injection device further comprises a drive mechanism comprising a spring or a resilient member, the spring or a resilient member being configured to provide a driving force when the trigger button is pressed allowing the piston to be advanced by the drive mechanism thus causing a dose of the liquid drug to be dispensed, wherein the handheld injection device comprises a variable friction system being adapted to apply a variable counter force leveling out the driving force.

Abstract: The present invention relates in a first aspect to a multi-state ratchet mechanism for a drug injection device. The multi-state ratchet mechanism comprises a ratchet gear member and a cooperating ratchet pawl member. An annular inner surface of the ratchet gear member comprises a first ring shaped surface portion with a first predetermined cross-sectional profile comprising a first asymmetrical toothing arranged at a first axial position of the inner annular surface. The annular inner surface of the ratchet gear member further comprises a second ring shaped surface portion arranged at a second axial position of the inner surface axially spaced apart from the first axial position. The second ring shaped surface portion comprises a second predetermined cross-sectional profile differing from the first predetermined cross-sectional profile.

Abstract: The invention relates to a medical drug delivery apparatus which comprises a cartridge (1) being closed at one end by a membrane (12) and at the opposite end by a movable piston (15). A piston rod foot (1) is provided for transferring the pressure from the piston rod (20) of the drug delivery apparatus and onto the piston (15). The piston rod foot (1) comprises a center part (2) abutting the piston rod (20) and an outer part (3) which center part (2) and outer part (3) are coupled together such that the two (2, 3) can be moved relative to one another, yet remain coupled to each other, when a force above a certain threshold limit is applied to the outer part (3).

Abstract: The present invention relates to an automatic torsion spring based injection device having a dial-up/dial-down mechanism by which a dose can be set by rotating a dose setting member in a first direction and which dose size can be reduced by rotating the same dose setting member in a second and opposite direction. The dial-up/dial-down mechanism operates a torsion spring which is strained when setting a dose and unstained when rotating the dose setting element in the second direction.

Abstract: A drug delivery device (1; 100; 200) comprising a housing (2; 102; 201, 202), a dose setting mechanism operable to set a dose to be delivered from a variable volume reservoir, and a dose delivery structure (60; 160; 260) activatable to expel a set dose. The dose setting mechanism comprises a dose indicating structure (40; 140; 240) for indicating a size of the set dose. The dose indicating structure (40; 140; 240) is coupled with the dose delivery structure (60; 160; 260) during expelling of the set dose and moved relative to the housing (2; 102; 201, 202) to a zero dose indicating position. The zero dose indicating position is a position which is fixed with respect to the housing (2; 102; 201, 202). The dose setting mechanism further comprises a dose setting structure (20; 120; 220) movable in a dose preparing direction relative to the housing (2; 102; 201, 202) to a dose prepared position to set a dose of a first size.

Abstract: The present invention relates to a drug delivery device (1, 100) comprising a drug expelling mechanism and a spring (10, 110) releasable during use of the drug delivery device (1,100) to convey stored energy to the drug expelling mechanism. The spring (10, 110) comprises a first helical portion (11, 111) and a second helical portion (13, 113) surrounding at least a portion of the first helical portion (11, 111).

Abstract: The present invention relates to a drug delivery device (1) with a power unit (10, 110, 210, 310) adapted to release energy for inducing relative rotation between a first interface portion (45) of the drug delivery device (1) and a second interface portion (22) of the drug delivery device (1). The power unit (10, 110, 210, 310) comprises a first spiral spring member (15, 15, 215, 315) and a second spiral spring member (16, 116, 216, 316) arranged in series along an axially extending structure (11; 111; 211, 285, 281; 311, 385, 1381, 386, 381).

Abstract: The present invention relates to a time delay indicator (1) for an injection device for administering a drug into the body of a subject user wherein the time delay indicator is configured for indicating after administration that a dose of the drug actually has been administered and for maintaining this indication until lapse of a pre-determined time interval. The time delay indicator is based on a magnetic liquid (6) being physically moved by a magnet (10).