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), wherein the expandable connector arrangements (230) are so configured that the body sections (240, 240A, 240B) are movable between a non-retaining position and a retaining position.

The present invention relates to a drive mechanism for a medicament delivery device, comprising a plunger rod (54) arranged to act on a stopper (28) arranged in a medicament container (16); a compression drive spring (58) operably connected to said plunger rod (54) and capable of applying a force on said plunger rod (54); a spring guide (78) arranged coaxial with, and radially outside, said compression drive spring (58), capable of preventing buckling of said drive spring, wherein said spring guide (78) comprises a resilient force element (86) capable of applying a force on said medicament container (16).

The housing for mounting an elongate-shaped container on an injection pen comprises an elongate-shaped body which extends along a longitudinal axis (X30) and which defines an interior volume (V32) for fully receiving the container. The body is provided, on the outside of a first axial end, with at least one first mechanical member for attaching a needle. The body is further provided, in the vicinity of a second axial end opposite the first axial end, with at least one second mechanical member for attaching the housing onto an injection pen. The housing further comprises, in the vicinity of the first axial end thereof, at least one third mechanical member for irreversibly locking a container in position, fully contained in the interior volume (V32) of the body of the housing. Said third locking member is formed by an elastically deformable tab intended to ensure locking of the container in position in the interior volume (V32) of the body of the housing, by axially retaining a flange of the container.

An injection device is disclosed including a housing assembly defining a pair of ramps and adapted to hold a medicament cartridge. A driver is adapted to advance the piston within the cartridge. A plunger having a pair of arms is moveable between a retracted position and an advanced position. Each of the arms are engageable with a respective one of the ramps as the plunger is advanced. A braking mechanism may include braking members on the arms and braking tracks proximate the ramps. Excessive force exerted on the plunger may flex the arms and engage the braking members with the braking tracks. The plunger arms may be connected together by a material bridge that biases the plunger arms apart from each other. The arms may include detents that engage to prevent the arms from moving due to the biasing force of the material bridge when the arms are in the fully retracted position.

Provided is a drive unit for an auto-injector having a drive unit housing arranged for docking receipt of a syringe or of a cassette unit comprising a syringe movable from a rest position, in which a needle tip of the syringe is within the drive unit housing to a use position, in which the needle tip protrudes from a needle delivery aperture; and a drive arrangement including one or more electrically powered sources of axial drive; a first drive transfer element for advancing the syringe to said use position; and a second drive transfer element for moving a plunger into the barrel of the syringe to eject liquid contents thereof. The drive unit housing is provided with a skin sensor arrangement having an array of plural skin sensor electrodes located about the needle delivery aperture.

Provided is a drive unit for an auto-injector having a drive unit housing arranged for docking receipt of a syringe or of a cassette unit comprising a syringe movable from a rest position, in which a needle tip of the syringe is within the drive unit housing to a use position, in which the needle tip protrudes from a needle delivery aperture; and a drive arrangement including one or more electrically powered sources of axial drive; a first drive transfer element for advancing the syringe to said use position; and a second drive transfer element for moving a plunger into the barrel of the syringe to eject liquid contents thereof. The drive unit housing is provided with a skin sensor arrangement having an array of plural skin sensor electrodes located about the needle delivery aperture.

The invention relates to a carpoule holder (8) for receiving a carpoule (10) and for fastening to a drive mechanism and/or to a dosing mechanism and/or to a housing (6) of an injection device, with a holding element (9, 9, 9) for fastening the carpoule (10) to or in the carpoule holder (8), wherein the holding element (9, 9, 9) is designed in such a way that it can be connected to the carpoule holder (8) and can be received completely by the carpoule holder (8).

An apparatus for transdermal injection includes a collet configured to transition between first and second states. In the first state, the collet receives a cartridge with a predetermined elongate shape. In the second state, an inner surface of the collet substantially conforms to the predetermined elongate shape of the cartridge such that expansion of the cartridge, when the cartridge is pressurized, is substantially uniformly opposed.

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.

Described is an injection device (1) for administering a drug, the injection device (1) comprising a cartridge holder (2) adapted to receive a drug cartridge (3), a hollow injection needle (6) having a proximal tip (6.2) adapted to pierce a septum (4) of the cartridge (3) so as to establish a fluid communication between the cartridge (3) and the needle (6), and a cap (7) arrangeable over the cartridge holder (2) in a manner to cover the needle (6). In an initial state the cartridge (3) is arranged within the cartridge holder (2) with the septum (4) axially spaced from the proximal tip (6.2) of the needle (6). The cap (7) is adapted to move the needle (6) relative to the septum (4) for piercing it on movement of the cap (7) relative to the cartridge holder (2).