The syringe comprises a body containing the liquid and having fitted thereto an endpiece for fastening a needle carrier. The safety device comprises a protective sheath and a syringe support that is received inside the sheath. The sheath and the support are axially movable relative to each other between two positions, namely an uncovered position of the needle, and a retracted position of said needle. The support includes anti-rotation means for constraining it in rotation about its axis and comprising at least one pawl urged resiliently into a position in which the pawl is designed to co-operate with complementary anti-rotation means of the fastener endpiece. The sheath and the support include complementary anti-rotation means for constraining them in rotation relative to each other about their axes and activated at least when the sheath and the support are in their uncovered position of the needle.

A safety syringe includes a barrel having a positioning groove, a needle holder mounted in the barrel and having a first internal flange engaged in the positioning groove of the barrel and a first positioning flange, an interlocking seat mounted in the needle holder and having an elastic flap and a first external flange, and a plunger mounted in the barrel and having a second external flange. By means of engagement between the elastic flap of the interlocking seat and the second external flange of the plunger, the interlocking seat can be pulled by the plunger to let the first external flange to be forced into engagement with the first internal flange of the needle holder for allowing the needle holder with an attached needlestick to be pulled backwardly into the inside of the barrel to assure the safety of the syringe after the injection.

An apparatus includes a housing coupled to a medicament container, which is coupled to a needle. An injection assembly is disposed within the housing and includes an energy storage member and an actuation rod. A distal end portion of the actuation rod is disposed within the medicament container. The energy storage member can produce a force on a proximal end portion of the actuation rod sufficient to move the distal end portion of the actuation rod within the medicament container. This can convey at least a portion of a substance from the medicament container via the needle when a distal tip of the needle is disposed within a first region of a target location. The force is insufficient to move the distal end portion of the actuation rod within the medicament container when the distal tip of the needle is disposed within a second region of the target location.

An apparatus includes a housing coupled to a medicament container, which is coupled to a needle. An injection assembly is disposed within the housing and includes an energy storage member and an actuation rod. A distal end portion of the actuation rod is disposed within the medicament container. The energy storage member can produce a force on a proximal end portion of the actuation rod sufficient to move the distal end portion of the actuation rod within the medicament container. This can convey at least a portion of a substance from the medicament container via the needle when a distal tip of the needle is disposed within a first region of a target location. The force is insufficient to move the distal end portion of the actuation rod within the medicament container when the distal tip of the needle is disposed within a second region of the target location.

A syringe assembly includes a syringe barrel having a first end, a second end, and a sidewall extending between the first end and the second end. The syringe assembly further includes a stopper disposed within a chamber of the syringe barrel, a plunger adapter engaged with the stopper and defining a recessed portion therein, and first and second plunger arms each having a first end pivotally secured to the plunger adapter. The first and second plunger arms each have a pre-use position where the plunger arms are spaced from each other, and a use position where the plunger arms are positioned adjacent to each other and configured to displace the stopper relative to the syringe barrel. The recessed portion of the plunger adapter receives a portion of a first end of a plunger rod when the first and second plunger arms are in the pre-use position and the use position.

A barrel with a cap, a pre-filled syringe, and a cap with a connector that accommodate connection-receiving bodies of the Luer lock type and of the slip-in type, are provided. Some versions include: a connector (3) detachably coupled to a cap (2) so as to be separated from the barrel (1) together with the cap (2) when the connector (3) is located at an initial position where the connector (3) is attached to a barrel (1) via the cap (2); and a connector-side engaging part (33) that engages a barrel-side engaging part (13) of the barrel (1) when the connector (3) is located at an attached position that is closer to a proximal end in an axial direction of the barrel (1) than the initial position, allowing the connector (3) to remain attached to the barrel (1) by being detached from the cap (2) separated from a nozzle (11).

Apparatus for supporting implements such as hypodermic syringes. The structure is made so as to protect operators against inadvertent sticking and the possible consequences thereof.

A syringe includes a syringe body, a syringe cone having a distal opening, and a connection arranged in the region of the syringe cone, wherein the syringe body includes a first material and the connection includes a second material, and wherein the first material is different from the second material and the second material is a softer material than the first material.

A needle-exchangeable and self-destruction insulin syringe comprises a barrel (1), a push rod (2), a rubber piston (3) and a needle seat (4). The barrel (1) is provided with a connection needle seat (7) matched with a needle hub (5). The connection needle seat (7) is supported and fastened at the front end of the barrel by a support seat (8). The needle hub (5) is extended downwards to form a fixing ring (9). A snap ring (10) is formed at an upper end of the connection needle seat (7). The snap ring (10) is protruded into the bore of the fixing ring (9) and locked with the fixing ring (9). A large groove (13) is provided in the wall of the bore of the connection needle seat (7). The upper end of the support seat (8) is protruded into the bore of the connection needle seat (7). First elastic detents (14) are formed at the upper end of the support seat (8) and come together towards the center. A ring of flange (15) is provided at the outside of the upper end of the support seat, and falls in the large groove (13), capable of sliding up and down along the large groove (13). First elastic support pawls (16) are formed at the lower end of the connection needle seat (7), and the inner wall of the barrel is correspondingly provided with a small groove (17) in which the first elastic support pawls (16) can be embedded. A ring of flange shoulder (18) is provided at the outside of the lower end of the support seat, and abuts against the first elastic support pawls (16).

A safety syringe includes a barrel, a plunger, a socket, a connector and a needle. The plunger is inserted in the barrel. The connector is inserted in the socket. The needle is connected to the connector. The socket includes a conical internal face in contact with a conical external face of the connector, an annular internal rib inserted in an annular external groove of the connector, and an annular internal groove for receiving an anchoring ring of the connector, thus retaining the connector in the socket. The plunger is movable backward to draw medicine into the barrel via the needle. The plunger is movable forward to extrude the medicine from the barrel via the needle. As the plunger is in contact with the anchoring ring, a larger force can be used to push the connector and the needle further forward from the socket to detach the needle from the socket.