Abstract: An auto-injector comprising an elongate housing containing a syringe. The housing having an orifice intended to be applied against an injection site. The syringe is slidably arranged with respect to the housing. A spring pushing the needle from a covered position into an advanced position, operating the syringe and covering the needle. An activator arranged to lock the spring prior to manual operation and capable of, upon manual operation, releasing the spring means for injection. A first gear arrangement and a second gear arrangement arranged fro converting torque from a first end and a second end of the torsion spring into a translative force. The first end groundable in the housing while the second end acts on a plunger through the second gear arrangement for advancing the needle and supplying the dose.

Abstract: Auto-injector for administering a dose of a liquid medicament includes a housing to contain a syringe with a hollow needle and a stopper for sealing the syringe and displacing the medicament (M), the housing having a distal end (D) and a proximal end (P) with an orifice to apply against an injection site. A spring means, upon activation, can push the needle from inside the housing through the orifice and past the proximal end (P), operate the syringe to supply the dose of medicament (M), and retract the syringe with the needle after delivering the medicament (M). An activating means can 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: Auto-injector for administering a dose of a liquid medicament includes a housing to contain a syringe with a hollow needle and a stopper for sealing the syringe and displacing the medicament (M), the housing having a distal end (D) and a proximal end (P) with an orifice to apply against an injection site. A spring means, upon activation, can push the needle from inside the housing through the orifice and past the proximal end (P), operate the syringe to supply the dose of medicament (M), and retract the syringe with the needle after delivering the medicament (M). An activating means can 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: 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: An auto-injector comprising an elongate housing containing a syringe. The housing having a an orifice intended to be applied against an injection site. The syringe is slidably arranged with respect to the housing. A spring pushing the needle from a covered position into an advanced position, operating the syringe and covering the needle. An activator arranged to lock the spring prior to manual operation and capable of, upon manual operation, releasing the spring means for injection. A first gear arrangement and a second gear arrangement arranged for converting torque from a first end and a second end of the torsion spring into a translative force. The first end groundable in the housing while the second end acts on a plunger through the second gear arrangement for advancing the needle and supplying the dose.

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: An auto-injector comprising a housing containing a syringe with a hollow needle and a stopper for sealing the syringe and displacing the medicament. A spring 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, operating the syringe to supply the dose of medicament, and retracting the syringe with the needle into the covered position after delivering the medicament. A trigger locks the spring in a pressurized state prior to operation and, upon manual operation, releasing the spring for injection. An interlock sleeve telescoped in the housing and translatable in longitudinal direction, wherein in a proximal position the interlock sleeve is arranged to be coupled to the syringe in the syringe's retracted position and wherein the interlock sleeve in its distal position is arranged to allow decoupling of the syringe.

Abstract: An injection device 110 is described having a housing 112 and a housing closure means 130. The injection device 110 houses a syringe 114 having a needle 118 which is sealed by a boot 117. The housing closure means 130 is arranged so that the boot 117 can be connected to the housing closure means 130 simply, but cannot be removed from the housing closure means 130. The housing 112 and housing closure means 130 are arranged so that upon rotation of the housing closure means 130, the housing closure means 130 member first rotates relative to the housing and then moves away from the housing. The injection device is simple to use and manufacture.

Abstract: An auto-injector for administering a dose of a liquid medicament includes an elongate housing that contains a syringe with a hollow needle and a bung for sealing the syringe and displacing the medicament. The housing has distal and proximal ends with an orifice to be applied to an injection site. A spring mechanism, upon activation, pushes the needle from a covered position inside the housing into an advanced position through the orifice. The spring mechanism also operates the syringe to supply the dose of medicament. An activating mechanism is arranged to lock the spring mechanism in a pressurized state prior and to release the spring mechanism upon manual operation. The spring mechanism includes a torsion spring ground at one end in the housing and in a gear member on the other end. The gear member is rotatable to move another gear member to push the bung towards the proximal end.

Abstract: An auto-injector for administering a dose of a liquid medicament (M) is presented comprising an elongate housing arranged to contain a syringe with a hollow needle and a stopper for sealing the syringe and displacing the medicament (M), the 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. The auto-injector contains a 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). There is also an activating means arranged to lock the spring means in a pressurized state prior to manual operation.

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: Auto-injector for administering a dose of a liquid medicament includes a housing to contain a syringe with a hollow needle and a stopper for sealing the syringe and displacing the medicament (M), the housing having a distal end (D) and a proximal end (P) with an orifice to apply against an injection site. A spring means, upon activation, can push the needle from inside the housing through the orifice and past the proximal end (P), operate the syringe to supply the dose of medicament (M), and retract the syringe with the needle after delivering the medicament (M). An activating means can 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: An arrangement for coupling a plunger to either a syringe or a stopper arranged in the syringe. The arrangement includes a syringe holder which is slidably arranged in a housing. The syringe holder is provided with at least one resilient syringe holder arm arranged distally, the syringe holder arm having an inclined surface for bearing against a shoulder, which is arranged at the plunger. The syringe holder arm is supportable by an inner surface of the housing in order to prevent it from being flexed outward in a first position. A widened portion is provided in the housing for allowing the syringe holder arm to flex outwards and disconnect from the plunger when in a more proximal position so as to switch load of the plunger from the syringe to the stopper.

Abstract: The invention relates to an auto-injector for administering a dose of a liquid medicament, comprising: an elongate housing, a syringe with needle and a stopper, a drive spring for pushing the needle from a covered position into an advanced position, for operating the syringe and for retracting the syringe, activating means for locking or releasing the spring means. A retraction sleeve is axially movable arranged in the housing. The drive spring bears with its proximal end against a thrust face of a decoupling member. At least one resilient decoupling arm is arranged at the decoupling member for bearing against a first shoulder of the plunger. At least one aperture is arranged in the retraction sleeve allowing the decoupling arms to be flexed outward thus allowing the first shoulder to slip past the decoupling arm.

Abstract: The invention refers to an auto-injector comprising: a body, a syringe with a hollow injection needle and a stopper, wherein the syringe is slidably arranged with respect to the body, a torsion spring capable of, upon activation: pushing the needle from a covered position inside the body into an advanced position through the orifice and past the proximal end (P), operating the syringe to supply the dose of medicament (M), and 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 torsion spring is grounded at one end in the body and at the other end in a first gear member rotatable about a longitudinal axis, wherein the first gear member, upon rotation, is arranged for translating a second gear member toward the proximal end (P), the second gear member prevented from rotating and arranged to be coupled to the stopper in order to push it towards the proximal end (P), wher

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

Abstract: The invention relates to a gearbox for converting a first translation into a second translation, the gearbox comprising a drive collar connectable to a translative drive means and prevented from rotating with respect to a ground of the drive means, a drive sleeve rotatably arranged at least partially inside the drive collar, engaged to the drive collar by a first screw thread and prevented from translating, wherein a plunger is arranged at least partially inside the drive sleeve, engaged to the drive sleeve by a second screw thread and prevented from rotating.

Abstract: An auto-injector comprising a housing arranged to contain a syringe. The syringe is slidably arranged with respect to the housing, a spring capable of pushing a needle from a covered position into an advanced position, operating the syringe to supply a dose of medicament, and retracting the syringe into a covered position and an activator. The spring is arranged to be grounded in the housing for advancing the needle and for injecting the dose of medicament. The drive spring grounded in the housing switched to its proximal end for retracting the syringe. An interlock sleeve telescoped within the housing. The activator comprises a trigger, wherein the trigger button is locked, thereby preventing actuation when the interlock sleeve is in its proximal position in an as delivered state and wherein translation of the interlock sleeve unlocks the trigger button so as to allow actuation.

Abstract: Auto-injector for administering a dose of a liquid medicament includes a housing to contain a syringe with a hollow needle and a stopper for sealing the syringe and displacing the medicament (M), the housing having a distal end (D) and a proximal end (P) with an orifice to apply against an injection site. A spring means, upon activation, can push the needle from inside the housing through the orifice and past the proximal end (P), operate the syringe to supply the dose of medicament (M), and retract the syringe with the needle after delivering the medicament (M). An activating means can 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: An auto-injector for administering a dose of a liquid medicament includes an elongate housing arranged to contain a syringe with a hollow needle and a stopper for sealing the syringe and displacing the medicament, the housing having a distal end and a proximal end with an orifice intended to be applied against an injection site. The syringe is slidably arranged with respect to the housing. A spring 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, operating the syringe to supply the dose of medicament, and retracting the syringe with the needle into the covered position. After delivering the medicament, an activator arranged to lock the spring in a pressurized state prior to manual operation and capable of, upon manual operation, releasing the spring for injection.