An injection device that comprises a chamber configured for containing a substance to be injected and a needle operatively associated with the chamber and having a length sufficient to deliver the substance to an intradermal injection site. A collar surrounds the needle, defining a collar cavity. The collar also has a peripheral forward skin-contacting surface that surrounds and is radially spaced from the needle and injection site by an area that is sufficiently large to allow a patient's skin to move into the collar cavity to properly position the needle for intradermal delivery of the substance to the injection site to allow spread of the injected substance under the skin while inhibiting or preventing backpressure within the skin from forcing the substance out through the injection site.

In an elongated casing, an active agent container connected to an injection needle can be shifted axially by a spring force. Auto-injectors distributed pre-filled and with the springs tensed may be provided with a needle protecting cap to ensure sterility of the needle. When the needle protecting cap is removed as preparation for using the auto-injector, a tensile force can be exerted on the active agent container. Therefore, the active agent container and needle must be prevented from being undesirably pulled forwards. At least one latching tongue prevents the active agent container from being prematurely shifted with respect to the casing, by abutting a flange arranged on a sliding sleeve accommodating the active agent container. When the auto-injector is placed onto the skin, a needle protecting tube is shifted into the casing, forcing the latching tongue away from the flange, thereby freeing the travel path for needle movement.

Apparatuses for automatic medicament injection and methods for manufacturing automatic medicament injectors are described herein. In some embodiments, an apparatus includes a housing, a needle, an energy storage member, an actuator, a locking member, and a needle guard. The needle is configured to move between a first position and a second position. In its first position, the needle is contained within the housing. In its second position, at least a portion of the needle extends from the housing. The energy storage member has a first configuration and a second configuration and is configured to produce a force when moving between its first configuration and its second configuration to move the needle from its first position to its second position. The actuator is configured to move the energy storage member from its first configuration to its second configuration. The locking member is movably coupled to the distal end portion of the housing such that the locking member can be moved between a first position and a second position. In its first position, the locking member is configured to engage the actuator to prevent the actuator from moving the energy storage member to the second configuration. The needle guard is removably coupled to at least one of the distal end portion of the housing or a base movably coupled to the distal end portion of the housing.

A needle assembly is disclosed, for use with an injection device. The needle assembly comprises a needle hub (20) having a needle (22) and a needle shield (40) arranged for relative axial movement with respect to the needle hub, between a retracted position in which the tip of the needle projects beyond a forward end of the shield and an extended position in which the tip of the needle does not project beyond the forward end of the shield. The needle shield (40) is axially biased towards the extended position. The needle shield (40) is further arranged to be torsionally biased for relative rotational movement with respect to the needle hub (20).

The invention relates to a shield triggered injection device with a triggering mechanism for injecting doses of a liquid drug. The injection device has a housing structure with a distal end and a proximal end, and a needle shield rotationally mounted relatively to the housing structure such that the needle shield is rotatable between a first position and a second position and which the needle shield when rotated from the first position to the second position is guided helically in a helical track. Further, an axially movable trigger element for releasing a set dose to be automatically ejected upon proximal movement of the trigger element against a bias is provided. The trigger element is provided with an axial locking arm which is biased into the helical track to block the passage through the helical track at least in one rotational direction.

A medication administering device includes upper and lower housings. The lower housing supports a syringe having a needle. A needle guard is in sliding engagement with the lower housing and is proximally movable from a first position, wherein the needle guard conceals a tip of the needle, to a second position, wherein the needle guard exposes the tip of the needle. The upper housing is configured to receive a distally directed force and move relative to the lower housing from a pre-use position to a dispensed position in response to the manual force. When the upper housing is in the pre-use position and the needle guard is in the first position, the upper housing cannot move toward the dispensed position. Proximal movement of the needle guard from the first position to the second position frees the upper housing for movement to the dispensed position in response to the force.

An automatic administration instrument includes a syringe and a partition wall in the syringe which partitions the syringe into different rooms for respectively holding plural kinds of drug solutions or a drug and a drug solution. A partition-wall driver displaces the partition wall and an injection needle is connected to the syringe. A body cap attached to the administration instrument body so as to cover the injection needle. The syringe, the partition wall, and the body cap are configured such that displacing the partition wall dissolves or mixes the drug solutions or the drug and the drug solution in a state that the injection needle is covered by the body cap.

Certain exemplary embodiments comprise can comprise an auto-injector, which can comprise: a vial configured to store and/or contain an injectable medicament, the vial defining a vial longitudinal axis, and a housing comprising the vial. In various embodiments, the injectable medicament can be a medicine, medication, drug, pharmaceutical, prescriptive, agent, antidote, anti-venom, hormone, stimulant, vasodilator, anesthetic, and/or nutritional supplement that is substantially ready for injection.

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).

The invention relates to a drug delivery device for setting and dispensing a dose of a drug, comprising: a support body having a first end defining a first opening and a second end defining a second opening, the support body configured to retain a syringe barrel sealed by a stopper slidably disposed therein along an axial direction and adapted to have an integrated needle or to be coupled with a needle assembly, a needle shield adapted to be coupled to one of the ends of the support body, slidably disposed thereon and keyed to the support body for preventing relative rotation, wherein at least one guiding track is defined on the support body and at least one retaining clip arranged on the needle shield is deflectable by the guiding track, wherein the guiding track is configured such that the retaining clip follows a first path when the needle shield is depressed from an extended position to a retracted position for needle extension and that the retaining clip follows a different second path when the needle shield is subsequently extended, wherein a non-return catch is arranged for catching the retaining clip at the end of the second path.