A safety syringe (100; 700; 1200) comprising: a barrel (104; 704; 1204) having an opening at an end thereof; a syringe plunger (108; 708; 1208) configured to move within the barrel such that an inward stroke of the syringe plunger causes a substance within the barrel to be expelled from the opening; and a sheath (112; 712; 1212) configured to cover at least partially the opening in the barrel after use of the syringe, wherein the sheath is coupled to the syringe plunger and is configured to decouple from the syringe plunger at a point on the inward stroke such that the sheath is moveable independently of the syringe plunger and further movement of the sheath after decoupling at least partially covers the opening in the barrel.

A needle and syringe system that provides ultra-low dosage waste and automatic needlestick protection. A syringe assembly is provided that contains a barrel and a plunger. A tubular spacer is disposed in the barrel. A needle head assembly is provided that includes a collar and a needle. A safety slide is positioned between the needle and the collar. The safety slide has a sheathing tube that surrounds part of the needle. The safety slide can move relative the needle. In a first position, the sheathing tube does not extend beyond the sharpened end of the needle. In a second position, the sheathing tube extends beyond the sharpened end of the needle. When advanced, the plunger head moves the tubular spacer. The tubular spacer passes over the base of the needle and presses against the safety slide. The safety slide is moved from the first position to the second position.

A needle and pre-filled syringe system that provides ultra-low dosage waste and automatic needlestick protection. A syringe assembly is pre-filled with an injection material. A needle head assembly attaches to the syringe assembly. A spacer is disposed between the needle head assembly and the syringe assembly. The spacer has a central opening. The needle head assembly supports a needle with a needle base. When assembled, the needle base passed into the central opening of the spacer. The needle head assembly also contains a safety slide that can selectively cover the needle. During an injection, pressure and/or contact with the plunger head causes the spacer to contact and move the safety slide. The safety slide moves to cover the needle during the injection procedure, therein rendering the needle safe before the injection process is even complete.

The present disclosure relates to a medicament injection device (1) comprising a housing (3) arranged to receive a medicament container (11a), a needle cover (9) movable relative to the housing (3), from a retracted position, in which it engages the housing (3) and enables medicament delivery, to an extended position, a plunger rod (7), and a plunger driver (5) movable relative to the housing (3) from all initial position to a final position, and arranged to actuate the plunger rod (7), wherein the plunger rod (7) has a first guide arrangement and the housing (3) has a second guide arrangement, the first guide arrangement (7d) and the second guide arrangement being arranged to cooperate to guide movement of the plunger rod (7) relative to the housing (3), wherein the first guide arrangement and the second guide arrangement in a first stage provide a linear motion path for the plunger rod (7), enabling the plunger rod (7) to initially move in the axial direction and in a second stage provide a rotation motion path for the plunger rod (7), enabling the plunger rod (7) to rotate relative to the housing (3) to release the plunger rod (7) from the plunger driver (5), whereby the plunger driver (5) attains a released state enabling movement of the plunger driver (5) to its final position, wherein in the released state the plunger driver (5) is arranged to release the needle cover (9) from the housing (3) and to actuate the needle cover (9) to its extended position.

Aspects of the present invention relate to an injection device comprising a drive means, a plunger, and an intermediate member disposed between the drive means and the plunger and releasably engaged with the plunger thereby to selectively transmit force from the drive means to the plunger.

The present disclosure relates to a medicament injection device (1) comprising a housing (3) arranged to receive a medicament container (11a), a needle cover (9) movable relative to the housing (3), from a retracted position, in which it engages the housing (3) and enables medicament delivery, to an extended position, a plunger rod (7), and a plunger driver (5) movable relative to the housing (3) from an initial position to a final position, and arranged to actuate the plunger rod (7), wherein the plunger rod (7) has a first guide arrangement and the housing (3) has a second guide arrangement, the first guide arrangement (7d) and the second guide arrangement being arranged to cooperate to guide movement of the plunger rod (7) relative to the housing (3), wherein the first guide arrangement and the second guide arrangement in a first stage provide a linear motion path for the plunger rod (7), enabling the plunger rod (7) to initially move in the axial direction and in a second stage provide a rotation motion path for the plunger rod (7), enabling the plunger rod (7) to rotate relative to the housing (3) to release the plunger rod (7) from the plunger driver (5), whereby the plunger driver (5) attains a released state enabling movement of the plunger driver (5) to its final position, wherein in the released state the plunger driver (5) is arranged to release the needle cover (9) from the housing (3) and to actuate the needle cover (9) to its extended position.

Aspects of the present invention relate to an injection device comprising a syringe carrier configured to receive a medicament container, a housing having a proximal end and a distal end; the housing being configured to receive the syringe carrier and releasably engage the proximal end of the syringe carrier and a proximal end cap arranged to engage with the proximal end of the housing and comprising a wall extending distally along the housing, the proximal end cap configured to maintain the engagement between the proximal end of the syringe carrier and the housing.

A safety syringe (100; 700; 1200) comprising: a barrel (104; 704; 1204) having an opening at an end thereof; a syringe plunger (108; 708; 1208) configured to move within the barrel such that an inward stroke of the syringe plunger causes a substance within the barrel to be expelled from the opening; and a sheath (112; 712; 1212) configured to cover at least partially the opening in the barrel after use of the syringe, wherein the sheath is coupled to the syringe plunger and is configured to decouple from the syringe plunger at a point on the inward stroke such that the sheath is moveable independently of the syringe plunger and further movement of the sheath after decoupling at least partially covers the opening in the barrel.

An autoinjector device is disclosed which comprises a body portion and a syringe carrier, for supporting a syringe with a needle at its forward end. The syringe carrier is moveably mounted within the housing such that forward movement relative to the housing may extend the needle from a forward end of the body. The syringe carrier has a latch element arranged to cooperate with a corresponding retention feature of the body portion to releasably hold the syringe carrier in a rearward position within the body potion. A delivery mechanism is arranged to forwardly displace the syringe carrier relative to the housing and to deliver a dose of medicament from the syringe. A shroud assembly is provided at a forward end of the device. The shroud further comprises a locking arrangement which blocks releasing movement of the latch element from the retention feature when the shroud is in a first, forward position and is unlocked when the shroud is in a second, rearward position.

Embodiments provided herein include a resettable injection training device having a body, a plunger slidable relative thereto, an injection simulation member and retractable and extendable shield, wherein the shield releasably locks in a retracted position prior to use. After use of the training device, the shield extends over the injection simulation member to prevent contact with the injection simulation member. Resetting of the slidable shield occurs by applying a force onto a distal end of the shield to retract the shield until a shield locking surface interacts with a locking surface on the body to maintain the shield in a retracted position. Release of the shield from a retracted position to an extended position may occur by moving the plunger toward a distal end of the body until a contact region at a proximal end of the plunger releases the shield locking surface from the body locking surface to release the shield.