Abstract: The invention refers to an auto-injector for delivering a liquid medicament, comprising: an elongate housing arranged to contain a syringe with a hollow injection needle and a stopper, wherein the syringe is slidably arranged with respect to the housing, spring means capable of, upon activation: pushing the needle from a covered position inside the housing into an advanced position for insertion into the injection site, operating the syringe to inject the dose of medicament, and advancing a needle shroud over the needle for providing needle safety, activating means arranged to lock and release the spring means, wherein the spring means is a single drive spring in the shape of a compression spring grounded distally in the housing and proximally bearing against a thrust collar arranged to transmit load from the spring means via a plunger to the syringe and/or the stopper for needle insertion and injection, wherein the plunger is engageable to the thrust collar for joint axial translation, wherein the plunge

Abstract: According to the invention, an auto-injector for administering a dose of a liquid medicament (M) comprises of a substantially cylindrical housing arranged to contain a pre-filled syringe filled with the medicament (M), a needle shroud slibably arranged with respect to the housing and adapted to rest on the skin of a patient receiving an injection, a releasable drive means arranged within the housing that is capable of, upon release, translating the needle shroud in a proximal direction (P) towards a safe position (PS) and a rotating collar rotatably arranged within the housing. The needle shroud in the safe position (PS) surrounds the injection needle after the injection has been carried out. The rotating collar engages the needle shroud in a manner that forces the rotating collar to rotate within the housing when the needle shroud is translated in the proximal direction (P).

Abstract: According to the invention, an auto-injector for administering a dose of a liquid medicament (M) comprises of a substantially cylindrical housing arranged to contain a pre-filled syringe; a syringe retainer slidably arranged with respect to the housing that mounts a pre-filled syringe with an injection needle, a plunger and a stopper for sealing a syringe barrel of the pre-filled syringe; a coupling shroud slidably arranged within the housing and releasably coupled to the plunger; and a single drive means. Upon release, the single drive means is capable of driving the coupling shroud in the proximal direction (P).

Abstract: According to the invention, an auto-injector for administering a dose of a liquid medicament (M) comprises of a substantially cylindrical chassis arranged to contain a pre-filled syringe with a syringe barrel filled with the medicament (M), an injection needle and a stopper for sealing the syringe barrel, a needle shroud slidably arranged within the chassis and adapted to rest on the skin of a patient receiving an injection, a plunger adapted to translate the stopper to expel the dose of the medicament (M) through the injection needle, a coupling shroud slidably arranged within the chassis and releasably coupled to the plunger and a drive means. Upon release, the drive means is capable of driving the coupling shroud from a first position (I) in a proximal direction (P).

Abstract: An auto-injector for administering a dose of a liquid medicament (M) comprises of a substantially cylindrical housing arranged to contain a pre-filled syringe with an injection needle, a plunger and a stopper for sealing a syringe barrel and a drive means releasably coupled to the plunger for advancing the syringe in the proximal direction (P) for needle insertion into an injection site and for displacing the dose of medicament (M) into the injection site. The drive means is arranged to be decoupled from the plunger for advancing a needle shroud to a safe position (PS) to surround the injection needle after the injection. According to the invention, the drive means bears against a thrust collar arranged to be releasably coupled to the plunger through a ramped engagement of a first tongue and a first recess so as to rotate the thrust collar on translation in proximal direction (P).

Abstract: The invention refers to an auto-injector for administering a medicament (M), comprising of a chassis, a syringe with a hollow needle and a stopper; a drive spring capable of, upon activation: advancing the needle (3), injecting the medicament (M), and retracting the syringe with the needle after delivering the medicament (M); and; activating means arranged to lock and release the drive spring, wherein the drive spring is a compression spring arranged to be grounded at a distal end in the chassis for advancing the needle and for injecting the dose of medicament (M) via a plunger and wherein the drive spring is arranged to have its ground in the chassis switched to its proximal end for retracting the syringe.

Abstract: The invention relates to a finger guard (7) for an injection device for administering a dose of a liquid medicament (M), the finger guard (7) comprising two inwardly biased spring arms (8) arranged for bearing against a protective needle shield (5) arrangeable at a hollow needle (4), the finger guard (7) further having a respective locking arm (9) assigned to each spring arm (8) biased in a distal direction (D) thus bearing against the respective spring arm (8) when the protective needle shield (5) is in place, wherein the spring arms (8) are arranged to move inwards when the protective needle shield (5) is removed thus allowing the locking arms (9) to move distally into a position where they prevent the spring arms (8) from being pushed outward again.

Abstract: The invention refers to an arrangement for coupling a plunger (9) to either a syringe (3) or a stopper (6) arranged in the syringe (3), the arrangement comprising a syringe holder (22) which is slidably arranged in a housing (2), wherein the syringe holder (22) is provided with at least one resilient syringe holder arm (23) arranged distally, the syringe holder arm (23) having an inclined surface for bearing against a shoulder (24), which is arranged at the plunger (9), wherein the syringe holder arm (23) is supportable by an inner surface of the housing (2) in order to prevent it from being flexed outward in a first position and wherein a widened portion (2.1) is provided in the housing (2) for allowing the syringe holder arm (23) to flex outwards and disconnect from the plunger (9) when in a more proximal position so as to switch load of the plunger (9) from the syringe (3) to the stopper (6).

Abstract: The invention relates to an auto-injector (1) with a delay mechanism (36) for slowing down motion of a retraction sleeve (10) in axial direction of the auto-injector (1), the delay mechanism (36) comprising a circumferential outer wall (37) with a back collar (38) attached to a housing (2) of the auto-injector (1) and a circumferential inner wall (39) with a front collar (40) attached to the retraction sleeve (10) wherein a cavity is defined between the outer wall (37) and inner wall (39), the cavity sealed by the back collar (38) against the inner wall (39) and by the front collar (40) against the outer wall (37), the cavity filled with a viscous fluid, wherein at least one orifice is arranged in the delay mechanism (36) for allowing the viscous fluid to be pushed out as the volume of the cavity decreases due to axial motion of the component with respect to the housing.

Abstract: The invention relates to an auto-injector (1) for administering a dose of a liquid medicament (M), comprising: an elongate housing (2) arranged to contain a syringe (3) with a hollow needle (4) and a stopper (6) for sealing the syringe (3) and displacing the medicament (M), the housing (2) having a distal end (D) and a proximal end (P) with an orifice intended to be applied against an injection site, wherein the syringe (3) is slidably arranged with respect to the housing (2), spring means (8) capable of, upon activation: pushing the needle (4) from a covered position inside the housing (2) into an advanced position through the orifice and past the proximal end (P), operating the syringe (3) to supply the dose of medicament (M), and retracting the syringe (3) with the needle (4) into the covered position after delivering the medicament (M), activating means (20) arranged to lock the spring means (8) in a pressurized state prior to manual operation and capable of, upon manual operation, releasing the spr

Abstract: The invention relates to an auto-injector for administering a dose of a liquid medicament (M), comprising: an elongate outer casing arranged to contain a syringe with a hollow needle and a stopper for sealing the syringe and displacing the medicament (M), the outer casing having a distal end (D) and a proximal end (P) with an orifice intended to be applied against an injection site, wherein the syringe is slidably arranged with respect to the outer casing, spring means capable of, upon activation: pushing the needle past the proximal end (P), operating the syringe to supply the dose of medicament (M), and retracting the syringe with the needle activating means arranged to lock the spring means in a pressurized state prior to manual operation and capable of, upon manual operation, releasing the spring means for injection, wherein the spring means is a torsion spring grounded at one end in the outer casing and at the other end in a first gear member rotatable about a longitudinal axis, wherein the first g

Abstract: The invention relates to an auto-injector for administering a dose of a liquid medicament (M), comprising: an elongate housing arranged to contain a syringe with a hollow needle and a bung for sealing the syringe and displacing the medicament (M), the elongate housing having a distal end (D) and a proximal end (P) with an orifice intended to be applied against an injection site, wherein the syringe is slidably arranged with respect to the housing, spring means capable of, upon activation, pushing the needle from a covered position inside the housing into an advanced position through the orifice and past the proximal end (P) as well as operating the syringe to supply the dose of medicament (M), activating means arranged to lock the spring means in a pressurized state prior to manual operation and capable of, upon manual operation, releasing the spring means for injection.

Abstract: The invention relates to a clutch mechanism for the transmission of a rotary movement from a gear arrangement comprising a first gear member and a second gear member. The first gear member is rotatable about a longitudinal axis but axially fixed wherein the first gear member, upon rotation, is arranged for translatively moving a second gear member which is prevented from rotating. The clutch mechanism comprises a circumferential shoulder arranged at the second gear member and at least one or a number of resilient clutch fingers with respective inclined inner surfaces arranged at the first gear member, the shoulder arranged for increasingly pressing against the inclined surfaces thereby flexing the clutch fingers outward when the shoulder reaches the clutch fingers in the course of its translation. The clutch mechanism further comprises tube arranged around the clutch fingers, the tube having a number of internal longitudinal splines for engaging the flexed-out clutch fingers.

Abstract: The invention refers to an auto-injector, comprising: an elongate housing arranged to contain a syringe with a hollow needle and a stopper, wherein the syringe is slidably arranged with respect to the housing, spring means capable of, upon activation: pushing the needle from a covered position inside the housing into an advanced position through the orifice and past the proximal end (P), operating the syringe to supply the dose of medicament (M), and retracting the syringe with the needle into the covered position after delivering the medicament (M), activating means arranged to lock the spring means in a pressurized state prior to manual operation and capable of, upon manual operation, releasing the spring means for injection, wherein the spring means is a single drive spring in the shape of a compression spring arranged to be grounded at a distal end in the housing for advancing the needle and for injecting the dose of medicament (M) via a plunger and wherein the drive spring is arranged to have its g

Abstract: This description relates to drug delivery devices (100), as well as related components, systems and methods.