A needle and syringe system, wherein a needle head is attached to a syringe assembly. The syringe assembly includes a syringe barrel and a plunger rod with a plunger head. A needle base is affixed to the syringe barrel. A tubular cavity is formed in the needle base and a post extends through the tubular cavity. A needle extends through the post. A spacer is provided. The spacer is displaced into the tubular cavity within the needle base as the plunger head is advanced within the syringe barrel. A protective cover is disposed about the needle base. The spacer moves the protective cover between a first position and a second position as the spacer is displaced into the tubular cavity. As the protective cover moves between positions, the protective cover surrounds the needle and prevents the needle from causing any inadvertent needle stick injuries.

An apparatus for use with a syringe for providing a safety syringe, the safety syringe including a plunger configured during an inward stroke to expel a substance from a hypodermic needle attached at an open end of a barrel of the syringe, the apparatus including: a biasing member configured to bias a sheath towards a closed position at least partially covering the hypodermic needle, wherein the biasing member is configured to be released at a point on the inward stroke of the plunger to urge the sheath towards the closed position.

An injector comprising an outer housing, a generally longitudinally extending keyway formed in the outer housing, an inner housing located interiorly of the outer housing, a guide member mounted at one end of the inner housing, the guide member having at least one protrusion adapted to engage the keyway, a spring member, the spring member having a first end abutting the outer housing, a second end of the spring member abutting the guide member, a syringe mounted interiorly of the inner housing, a needle mounted on one end of the syringe, the syringe having a plunger and a plunger rod, a finger rest member mounted over the outer housing, the finger rest member being opaque to thereby prevent visual access to the keyway.

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.

Disclosed is an auto-injector apparatus for receiving a safety syringe, the safety syringe including a sheath deployable on actuation of a plunger to a position at least partially covering a needle of the syringe, wherein the apparatus is configured to allow movement of the sheath to a closed position that substantially covers the needle.

A safety syringe comprising a barrel having an opening at an end thereof and a bung positioned in the barrel and creating a volume between the opening and the bung. The safety syringe also comprises a handle portion secured to the barrel and a syringe plunger slidably engaged with the handle portion and moveable within the barrel on an inward stroke to drive the bung forwards within the barrel to cause a substance within the volume to be expelled from the opening. The safety syringe further comprises a rotation mechanism configured to rotate the syringe plunger within the barrel at a point during the inward stroke when the syringe plunger is in contact with the bung, such that a rotational force is applied to the barrel and a brake connected to the handle portion and configured to provide a frictional force to resist the rotational force applied to the barrel.

Disclosed is a fluid product injection device comprising: —a syringe comprising a vessel (1) containing fluid product to be injected, a piston (3) being arranged so as to be axially movable in the vessel (1) and a needle (2) provided with an injection tip (20) being attached to the vessel (1), —a piston rod (5) axially movable relative to the vessel (1) and cooperating with the piston (3) during injection in order to move it axially in the vessel (1), —a sleeve (10) arranged around the syringe, being axially movable relative to the vessel (1) between an idle position, in which the sleeve (10) does not cover the injection tip (20) of the needle (2), and a projecting position, in which the sleeve (10) covers the injection tip (20) of the needle (2), the sleeve (10) being in its idle position before actuation of the injection device, the sleeve (10) being moved towards its projecting position after the injection of the fluid product, the sleeve (10) being moved by the piston rod (5).

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.

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 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.