54 results about "Safety needles" patented technology

The present invention provides a method of assembling and packaging a medical needle device having a double ended needle (116), which comprises a container (170) having a closed end and an open end to receive a spring activated safety needle device (110) to provide passive needlestick protection to a non-patient end (118) of the needle (116). The method comprises performing the independent steps of (i) assembling a first sub-assembly (101) by mounting a shield (114) to a tubular housing (130) to form a telescopic device (104) and engaging the telescopic device (104) within the container (170), and (ii) assembling a second sub-assembly (102) by securing the double ended needle (116) within the needle mount (140), wherein the mounting element is provided on an external surface of the needle mount (140). The tubular housing (130) comprises (a) a mounting member on an internal surface to engage a mounting element of the needle mount (140), and (b) a spring to urge movement of the double ended needle (116) during use to a shielding position whereat the needle (116) extends at an angle oblique to a longitudinal axis of the tubular housing (130) to place the non-patient end (118) of the needle (116) at a location adjacent to an interior wall of the tubular housing (130). The method further comprises inserting the second sub-assembly (102) into the tubular housing (130) to secure the mounting element of the needle mount (140) to the mounting member of the tubular housing (130) to unite the second sub-assembly (102) to the first sub-assembly (101) to enable the spring to urge movement of the double ended needle (116) during use to a shielding position. Finally, the method comprises applying the closure a label (124) over the open end of the container (170) to seal the medical needle device 110 within the container (170).

An improved safety needle assembly includes a needle / cannula mounted in a tubular housing. The needle is provided with a patient end and a non-patient end, and the purpose of the utility model is to provide passive acupuncture protection at the non-patient end. A further object is to increase reliability and reduce fatigue on the resilient mechanism prior to use. The sleeve is located in the needle seat, and the needle seat is located in the tubular shell. The concealing sleeve provides a blocking mechanism that maintains alignment of the cannula along the longitudinal axis of the tubular member. In particular, the blocking mechanism is arranged to counteract the pivoting force of the spring or the ability of the sleeve to rotate freely so as to hold the sleeve in the operational position. According to the safety needle assembly, the spring and the needle seat are arranged at set positions, and the safety needle assembly and the medical injector are used to cause displacement from the set positions. This displacement enables the spring to rotate the needle to a hidden position when the safety needle assembly is detached from the medical syringe. The utility model further relates to a corresponding medicine delivery device.

An anti-needlestick safety needle, comprising: a needle tubing (11), a sleeve member (12), an operating handle (13), and a core rod (14) in communication with the needle tubing (11). The needle tubing (11) comprises a connecting end (111). The connecting end (111) is a tail end of the needle tubing (11) connected to the core rod (14). The connecting end (111) is located within the sleeve member (12) and is located on a front side of the operating handle (13), i.e., one side where a needle head of the needle tubing (11) is located. A magnifying mechanism (15) is arranged on the sleeve member (12) and used for magnifying an image of the connecting end (111). By means of the design that the connecting end (111) is positioned within the sleeve member (12) and is located on the front side of the operating handle (13), it is ensured that the hand of an operator does not obstruct the connecting end (111) of the needle tubing (11) during blood sampling with one hand, and the operator is allowed to clearly observe the blood return condition during blood sampling, so that the real-time operational monitoring and feedback are improved, thereby reducing risks in blood sampling operation. By means of the arrangement of the magnifying mechanism (15), a visual field magnifying effect is provided, so that the operator can observe the blood return condition more clearly, thereby reducing errors and improving operational accuracy.

An automatically retracting safety needle assembly configured to receive a syringe; and a method of use. The assembly has distal and proximal ends, and comprises: a housing, with internal housing (IH), and a base wall. A moving sleeve (MOS): at least partially within the IH; having a flange wall, and axially movable. A biasing element (BE), within the IH, biasing the MOS proximally. A syringe, receiving a plunger rod; movable axially within the IH, and coupled to the MOS. An activation fork (AF), partially disposed within the IH. AF has a guiding arm coupled with the IH and the MOS; preventing motion of the MOS during non-deployment state. An automatic retraction mechanism, retracting the syringe after injection. Deployment: advance plunger rod and the AF axially (distally), until AF guiding arm allows proximal movement of the MOS, retracting the syringe. Distal advancement of plunger rod is constant without an abrupt increase in resistive force to overcome for activating the retraction; allowing safe disposal.

The present invention provides a safety needle device (8) with a tamper evident (indication of first use) seal. The safety device (8) comprises a protective shield (19) pivotally coupled to a carrier (18), and the protective shield (19) is configured to pivotally rotate outwardly from a before-use initial shielding position to a during-use non-shielding position. The protective shield (19) comprises two supporting arms (26, 27) which provide shearing surfaces (110, 111) aligned with the longitudinal axis of the protective shield (19). The tamper proof arrangement comprises a seal member 100 to overlay the shearing surfaces (110, 111) when the protective shield (19) is in the before-use shielding position. The seal member (100) is secured to the safety device (8) so as to overlay the shearing surfaces (110, 111) and span the gap between the supporting arms (26, 27). During the movement of the protective shield (19) from the before-use initial shielding position to the during-use non-shielding position, the shearing surfaces (110, 111) rotate outwardly to thrust against the overlying seal member (100) to thereby irrevocably damage and or distort a part of the seal member (100). Accordingly, as soon as the protective shield (19) is moved from the initial before-use shielding position towards the during-use non-shielding position, the seal member (100) is irrevocably deformed or damaged such that it is clearly evident that the safety device (8) has at least been partially used for an injection sequence.

A safety needle device (1) comprises: a needle seat (10); a needle (20) mounted on the needle seat (10), the needle (20) extending along a longitudinal axis (X-X) between a distal end (21) formed for insertion into a patient's body and an opposite proximal end (22) formed for connection to a container; a protective cover (30) which can slide relative to the needle seat (10) along the longitudinal axis (X-X) and is constrained to rotate around the longitudinal axis (X-X); a housing (40) mounted on the needle seat (10); an elastic member (50) which is arranged in the housing (40) and acts on the protective cover (30); a sleeve (60) which is arranged in the housing (40) and can be rotatably mounted relative to the protective cover (30) and the housing (40) around the longitudinal axis; a locking arrangement structure (70) which comprises a first locking member (71) and a second locking member (72); the safety needle device (1) comprises a guide arrangement structure (80).

The utility model discloses a safety protection needle seat convenient to take, which relates to the technical field of safety needle seats and comprises a needle tube, an injection tube is arranged at the upper end of the needle tube, a needle seat is fittingly mounted on the outer side of the injection tube, a needle head is arranged at the upper end of the needle seat, and a rubber ring is detachably mounted in the middle of the outer side of the needle seat. A fixing ring is fixedly installed on the outer side of the rubber ring, a connecting plate is fixedly installed at the right end of the fixing ring, and a rubber plug is detachably installed on the connecting plate. The rubber plug is pinched by a hand and moved upwards, so that the connecting plate drives the whole needle seat to be separated from the injection tube, the needle seat is safely taken down, the hand cannot be hurt by the needle head, then the rubber plug is taken out of the assembly hole, the rubber plug is plugged into the mounting groove, and liquid medicine can be prevented from flowing out.

A Hypodermic Needle Safety Guard intended for sharps prevention and safer hypodermic needle use during all stages of an injection process. The Safety Guard may include two symmetrically positioned multi-featured arms that include spring tension, multiple hinges and needle locks. These arms may connect a proximal Luer body and a distal alignment tip thereby enabling the guard to open, close and lock on a needle when manual pressure is applied. The Guard position during hypodermic needle use tends to prevent sharps injury by adjusting the exposure of the Needle tip.

Safety pin assembly comprising a pin holder (10), a pin tube (20), a base (30) and a connecting member (40), wherein the pin tube (20) is bent to form a transverse tube (21) and a longitudinal tube (22), wherein a guide bore (33) for receiving the passage of the longitudinal tube (22) is arranged on the side of the base (30) facing the pin holder (10), wherein a receiving cavity is arranged below the guide bore (33), wherein the connecting member (40) comprises a connecting seat (41) and a hinged connecting element, wherein the connecting seat (41) is arranged below the receiving cavity and is rotatably and movably connected to the base (30), wherein one end of the connecting element is connected to the connecting seat (41) and the other end to the pin holder (10), wherein a connecting bore (42) for receiving the passage of the longitudinal tube (22) is arranged on the connecting seat (41).wherein the longitudinal tube (22) passes successively through the guide bore (33), the receiving cavity, and the connecting bore (42) when the connecting element is in the folded-in state, wherein the tip of the longitudinal tube (22) is located in the receiving cavity when the connecting element is in the unfolded state, so that the connecting seat (41) is rotated until the connecting bore (42) and the longitudinal tube (22) are in an offset position. The tip of the needle tube (20) cannot re-enter the connecting bore (42), thus restricting the tip in the receiving cavity, which serves as protection against needlestick injuries by medical personnel.

The application relates to a clamping positioning device for safety needle tension detection, which comprises a positioning rack and a fixing assembly, the positioning rack is provided with a positioning structure, and the fixing assembly can be used for pressing the safety needle; the fixing assembly comprises an assembly support part and a fixing pressing block, the fixing pressing block has an original position and a pressing position, the fixing pressing block in the original position can be moved to the upper side of the corresponding pressing position through movement in the front-back and left-right directions, and then moved to the pressing position through movement in the up-down direction to press the safety needle; the fixing pressing block in the pressing position can be moved out of the pressing position through movement in the up-down direction, and then moved to the original position through movement in the front-back and left-right directions. The application has the advantages of simple and compact structure, convenient operation, avoidance of interference with the taking and placing of the safety needle during feeding and discharging, inactivity of the safety needle during tension detection and pressing of the safety needle, non-damage of the safety needle, preparation for automatic tension detection, and ensured quality of automatic tension detection of the safety needle.

The invention discloses an outer sliding sleeve tension detection device of a safety needle, which belongs to the technical field of safety needle detection and comprises an outer sleeve tension detection mechanism and a positioning mould. The jacket pulling force detection mechanism comprises a jacket detection frame, a jacket pulling force detection unit, a lifting seat and a push plate, the jacket pulling force detection unit comprises a jacket pulling block and a pulling force sensor, the jacket pulling block is connected with the push plate through the pulling force sensor, and the jacket pulling block and the push plate are arranged on the lifting seat in a front-back sliding mode; the positioning mould comprises a positioning rack and a fixing assembly, and the fixing assembly can tightly press the safety needle. The positioning mold is simple in structure, the positioning mold can act on a fixed part of the safety needle, stable positioning of the safety needle is achieved, the positioning requirement of the safety needle during outer sliding sleeve tension detection is met, preparation is made for automatic outer sliding sleeve tension detection, automatic outer sliding sleeve tension detection is convenient and rapid and is not affected by human factors, and the safety needle can be accurately positioned. And the tension detection efficiency and quality of the outer sliding sleeve of the safety needle are improved.

The invention belongs to the technical field of safety needle detection, and relates to a visual detection system for safety needle tension detection, which comprises a visual detection device and a clamping and positioning device, the visual detection device comprises a visual detection support seat, a visual detection display and a visual detection lens, the visual detection display and the visual detection lens are connected through a signal, the visual detection display is installed on the visual detection supporting seat, the visual detection lens is installed on the visual detection supporting seat in a sliding mode, and the clamping and positioning device is arranged below the visual detection lens. The clamping and positioning device is used for clamping and fixing the safety needle to be detected. The visual inspection system can automatically detect the safety needle located on the clamping and positioning device and judge whether the outer sliding sleeve, the inner sliding sleeve and the needle sheath of the safety needle are reset to the initial state or not, so that the quality of outgoing products is guaranteed, and the reliability of the products and the satisfaction degree of users are improved.

The invention relates to a clamping and positioning device for tension detection of a safety needle, which comprises a positioning rack and a fixing assembly, a positioning structure is arranged on the positioning rack, and the fixing assembly can be used for pressing the safety needle; the fixing assembly comprises an assembly supporting part and a fixing pressing block, the fixing pressing block is provided with an original position and a pressing position, and the fixing pressing block located at the original position can move to the position above the corresponding pressing position through movement in the front-back direction and the left-right direction and then move to the pressing position through movement in the up-down direction to press the safety needle. And the fixed pressing block in the pressing position can move out of the pressing position through vertical movement, and then returns to the original position through front-back and left-right movement. The device is simple and compact in structure and convenient to operate, can avoid interference on taking and placing of the safety needle during feeding and discharging, can compress fixed parts of the safety needle when the safety needle is subjected to tension detection, cannot damage the safety needle, makes preparations for automatic tension detection, and ensures the quality of automatic tension detection of the safety needle.

The utility model relates to the technical field of medical needle tube machining, in particular to a safety needle tube side wall groove machining tool which comprises a mounting base, a limiting device arranged on the mounting base, a machining device used for clamping and machining a safety needle tube and a mounting frame used for mounting the mounting base. The machining device comprises clamping blocks connected to the mounting base in a sliding mode, male dies arranged on the clamping blocks and a driving assembly used for driving the clamping blocks to move, the two clamping blocks are oppositely arranged, the two male dies are correspondingly arranged, the two male dies are oppositely arranged on the opposite sides of the two clamping blocks, and the driving assembly is used for driving the clamping blocks to move. The two male dies are located on the same horizontal plane. The device has the advantages that a worker can conveniently machine the groove in the side wall of the needle tube of the safety needle, the machining efficiency is improved, and the production cost is reduced.

A safety needle assembly includes a needle seat, a needle tubing, a base and a connecting member. A guide hole for receiving the longitudinal tube to pass through is formed in one side of the base, and a receiving cavity is formed below the guide hole. The connecting member includes a connecting base and a foldable connector. When in the folded state, the longitudinal tube passes through the guide hole, the receiving cavity, and the connecting hole in sequence; and in the unfolded state, the tip of the longitudinal tube is located in the receiving cavity, and the connecting base rotates until the connecting hole and the longitudinal tube are in a staggered state. The tip of the needle tubing cannot enter the connecting hole again, so that the tip is restricted in the receiving cavity to play a protecting role in preventing medical staff from being stabbed.

A hard-packaged safety needle device includes a needle hub having a distal portion and a proximal portion, a needle cannula extending from the distal portion of the needle hub, and a hard needle shell having a needle cover, an adapter, and a cap. The needle cover is configured to house the needle cannula, and the adapter has a tapered bore configured to form an interference fit and a sterile barrier with a tapered outer surface of the needle cover. The cap includes a distal opening defining a first cavity, the cap being configured to interlock with the adapter by receiving a proximal portion of the adapter through the first cavity of the cap.

A hard-packaged safety needle device comprises a needle hub having a needle cannula extending therefrom and a hard needle enclosure including a needle cover and a cap. The needle cover has an elongated body and a ribbed surface configured to create an interference fit with a proximal portion of the hub. The cap includes a body having an open distal end, a closed proximal end, and a cavity defined by the open distal end and the closed proximal end, the open distal end of the cap abutting an open proximal end of the needle cover.

The present invention provides a safety device (8) for a medical injection needle comprising a protective shield (19) pivotally coupled to a carrier (18), wherein the carrier (18) is configured to be secured directly or indirectly to a needle hub having a sharp tip of a needle projecting therefrom. The protective shield (19) is configured to move from a before-use initial shielding position to a during-use non-shielding position and to an after-use final shielding position. Once the injection has been completed, the protective shield (19) is pivoted inwardly until a locking means is engaged in the final shielding position with the needle (11) and the protective shield (19) is maintained at an angle offset from the longitudinal axis of the syringe (10). A locking member (80, 81) is located adjacent a profiled flank (66, 67) of a lug (60) when the protective shield (19) is at the before-use initial shielding position. The locking member (80, 81) and the profiled flank (66, 67) comprise cooperating drive surfaces to engage and resiliently deform the locking member (80, 81) in an outward transverse direction relative to the longitudinal axis of the protective shield (19) when the shield (19) is moved inwardly to the after-use final shielding position. The drive surfaces disengage to allow the locking member (80, 81) to return resiliently inwardly towards an undeformed condition so as to locate adjacent an inner blocking surface (63) of the lug (60) to lock the protective shield (19) at the after-use final shielding position. A return movement or force will cause the locking members (80, 81) to be urged further underneath this inner blocking surface (63).

A safety needle device comprises a hub configured to be connected to a pen-type injector, the hub comprising a side wall and an upper wall defining a cavity between them, the cavity extending between said upper wall and a lower aperture able to receive the pen-type injector; a needle attached to the hub, the needle extending along a longitudinal direction between a distal end configured to be inserted into a patient and an opposite proximal end configured to be connected to the pen-type injector; a back end shield slidable along the longitudinal direction and rotatable about the longitudinal direction within the cavity of the hub, the back end shield being irreversibly movable from an initial position before the pen-type injector is connected to the hub, through an intermediate position, to a locked position after the pen-type injector is removed from the hub; a resilient member arranged within the cavity and acting between the upper wall and the back end shield to push the back end shield along the longitudinal direction towards the proximal end of the needle; a locking device comprising at least one first locking member formed on the back end shield and at least one second locking member formed on the hub.

To provide a safety needle assembly which punctures a subcutaneous implantation type port having high operability.SOLUTION: A safety needle assembly 1 includes: a needle 2 which has a needle tip 21 punctured on a subcutaneous implantation type port; a hub 4 communicating between the needle 2 and a tube 3; a body part 5 having a housing space 5S housing the hub 4 and an opposing surface 5F directed to the body surface of a patient; a buffer material 100 provided on the opposing surface 5F; and an adhesion layer 110 provided between the opposing surface 5F and the buffer material 100. An outer peripheral edge 110L of an adhesion layer 110 is located offset inside an outer peripheral edge 100L of the buffer material 100.SELECTED DRAWING: Figure 4

The invention provides a medical injection needle safety device (8) comprising a protective cover (19) pivotally connected to a carrier (18) configured to be secured directly or indirectly to a needle hub with a protruding needle tip. The protective cover (19) is configured to move from a pre-use initial protective position to an in-use non-protective position and then to a post-use final protective position. The safety device (8) comprises a combined control mechanism (holding mechanism and stop means) for inhibiting the disengagement of the support arms (26, 27) from the corresponding pivoting members (40, 41) of the carrier (18) and limiting the excessive pivoting movement of the protective cover (19) relative to the carrier (18) beyond the post-use final protection position. The mechanism limits / limits the pivoting movement range of the protective cover (19) beyond the predetermined final locking position; furthermore, separation of the protective cover (19) from the corresponding pivoting members (40, 41) of the carrier (18) is suppressed / prevented, thereby enhancing the structural strength of the safety device (8), reducing the risk of separation of the protective cover (19) with respect to the carrier (18) during use, any such separation exposing the used needle (11).

The invention discloses a reset device for safety needle tension detection, and belongs to the technical field of safety needle detection. The device comprises a press-fit transfer assembly and a positioning mould, the press-fit transfer assembly comprises a press-fit frame, a press-fit transfer unit and a press-fit lifting seat; the press-fit transfer unit comprises a press-fit push block, the press-fit push block is arranged on the lifting seat in a sliding manner, and the press-fit push block can act on the outer sliding sleeve under the action of a transfer driving mechanism to reset the outer sliding sleeve and the inner sliding sleeve; the positioning mould comprises a positioning rack, a fixing assembly and a sheath transfer assembly, the fixing assembly can press the safety needle, and the sheath transfer assembly can clamp the needle sheath and transfer the reset needle sheath. The fixing assembly can act on a fixed part of the safety needle, the pressing and transferring assembly can reset an inner sliding sleeve and an outer sliding sleeve of the safety needle, the sheath transferring assembly can clamp and transfer a reset needle sheath, automatic resetting of the safety needle is achieved, the resetting process is convenient and rapid and is not affected by human factors, and the safety needle can be automatically reset. And the resetting efficiency and quality of the safety needle are improved.

The invention relates to the technical field of human tissue thickness measurement, in particular to an intelligent acupuncture point positioning and safe depth prediction system and method.The system comprises the steps that height, trunk, shoulder width and pelvis data of a patient are collected to calculate a longitudinal-transverse proportion benchmark, body surface three-dimensional scanning is conducted based on the proportion to position shoulder, elbow and knee marks, and coordinates are generated; meridians and collaterals and a transverse interpolation axis are reconstructed to restrain a body surface path, acupuncture point space coordinates are calculated in combination with bony markers, and the safe acupuncture depth is evaluated through ultrasonic analysis of tissue levels. According to the invention, a vertical and horizontal body type reference is constructed through double proportions of height, trunk and shoulder and basin width, body surface three-dimensional scanning is introduced, a stable space anchor point is formed by a key anatomical mark, an ordered topological relation is established along meridians and collaterals and the transverse direction, and scale deviation is corrected in combination with path constraint, so that acupuncture point positioning has consistency and verifiability; and the safe needle insertion depth is quantified through the relationship between the tissue level and the bone surface, so that individualized and explainable accurate positioning and risk assessment are realized.

The invention provides a safety needle injector assembling machine, and belongs to the technical field of injector assembling. The technical problem that in the prior art, a safe needle head with a protective sleeve cannot be assembled is solved. The safety needle injector assembling machine comprises an assembling rotating disc, a plurality of barrel assembling grooves distributed in the circumferential direction are formed in the assembling rotating disc, a safety needle assembling groove is formed below each barrel assembling groove, a feeding station and a discharging station are distributed in the circumferential direction of the assembling rotating disc, a barrel feeding mechanism and a safety needle feeding mechanism are arranged on the feeding station, and a barrel discharging mechanism is arranged on the discharging station. A needle twisting part which can be used for twisting the safety needles in the safety needle assembling grooves to rotate when the assembling rotating disc rotates is arranged between the feeding station and the discharging station, the needle twisting part is connected with an elastic extrusion assembly, and a needle head pushing and lifting assembly which is used for lifting the safety needles to enable the upper ends of the safety needles to abut against the lower ends of the needle cylinders all the time when the safety needles are twisted is arranged below the needle twisting part. The device has the advantages of being suitable for the safe needle head with the sheath, high in adaptability, stable in product quality and the like.

The invention belongs to the field of medical technical instruments, and particularly discloses a diabetic gastroparesis abdominal distension treatment device which comprises a shell, a control module and a power module are integrated in the shell, an electrode slice socket is formed in the top of the shell and connected with a flexible electrode slice, and heating films symmetrical up and down and sliding grooves symmetrical left and right are fixed to the inner side of the shell. A temperature sensor is arranged in the heating film to achieve overheating protection, a connecting rod slides in the sliding groove, one end of the connecting rod is connected with a rotating disc through a universal joint, the other end of the connecting rod is connected with an output shaft of a rotating motor, the rotating disc is provided with a plurality of massage heads, the universal joint structure enables the massage heads to be tightly attached to the curved surface of the abdomen of a patient, and a gear and rack linkage mechanism can adjust the positions of the massage heads. The device integrates a low-frequency electrical stimulation module, a constant-temperature hot compress module and a bionic massage module, synergistically improves the problems of slowing gastrointestinal peristalsis, poor local circulation and the like of diabetic gastroparesis patients through a multi-mode physical therapy, has the characteristics of portability, safety and strong pertinence, and can be used as an auxiliary means for drug therapy to relieve the symptom of abdominal distension.

The invention relates to a needle cap lock for an automatic injector (1) comprising a pre-filled injection tube (7) with a needle (9). If the device cap (20) is attached to the autoinjector (1), deflection of the locking member (33) of the autoinjector is prevented by the stop surface (12) and by the blocking surface (27) of the cap (20), and thereby the cover sleeve (30) is prevented from exiting the extended position. If the device cap (20) and its blocking surface (27) are removed from the autoinjector (1), the locking member (33) is allowed to deflect, thereby allowing the needle cap sleeve (30) to exit the extended position and move towards the retracted position. If the device cap (20) is removed, the locking member (33) is deflectable in a plane tangential to the circumferential outer surface of the cover sleeve (30).

A medical needle 11 safety assembly 10 comprises a carrier 18 pivotally coupled to a needle shield 19 configured to move outwardly from an initial shielding position to a non-shielding position. The c

The invention discloses a detachable quick locking device which is used for quickly locking and unlocking a D-SUB electric connector plug and a D-SUB electric connector socket and comprises a male locking assembly, a female locking assembly, a safety pin, a taking and sending tool and an unlocking push rod. The male locking assembly is composed of an inner sleeve, a retaining clamp, an outer sleeve, a spring and a fixing clamp. The female locking assembly is composed of a dual-purpose screw, a fixing claw, a gasket, a spring washer and a nut. The female locking assembly is installed on the socket, the male locking assembly is installed on the plug, locking is achieved through pressing operation on the inner sleeve, and accidental unlocking can be avoided by inserting the safety pin into the inner sleeve. During unlocking, the safety pin is taken out through a taking and sending tool, and then the unlocking push rod is inserted and pressed to achieve unlocking. The device can be used for replacing a screw locking mechanism of a D-SUB electric connector, and quicker and more convenient locking and reliable secondary locking insurance are realized.

A needle cover lock for an autoinjector includes a prefilled syringe with a needle. When a device cap is attached to the autoinjector, a deflection of a locking member of the autoinjector is prevented by a stop surface and by a blocking surface of the cap, and thereby the cover sleeve is prevented to exit an extended position. When the device cap with its blocking surface is removed from the autoinjector, the locking member is allowed to deflect, thereby allowing the needle cover sleeve to exit the extended position and to move towards a retracted position. The locking member is deflectable in a plane tangent to a circumferential outer surface of the cover sleeve when the device cap is removed.

The invention provides a medical injection needle safety device (8) comprising a protective cover (19) pivotally connected to a carrier (18) configured to be directly or indirectly secured to a needle hub having a needle tip projecting therefrom. The protective cover (19) is configured to move from a pre-use initial protective position to an in-use non-protective position and then to a post-use final protective position. After completion of the injection, the protective cover (19) pivots inward until the locking mechanism engages the needle (11) in the final protective position and the protective cover (19) maintains an offset angle with respect to the longitudinal axis of the syringe (10). A locking member (80, 81) is disposed adjacent to the profiled flanks (66, 67) of the lugs (60) when the protective cover (19) is in a pre-use initial protective position. The locking member (80, 81) and the profiled flanks (66, 67) comprise mating drive surfaces that engage the locking member and elastically deform the locking member (80, 81) in an outward transverse direction with respect to a longitudinal axis of the protective cover (19) when the protective cover (19) is moved inwardly to a post-use final protection position. When the protective cover (19) is in use, the drive surface is disengaged, allowing the locking member (80, 81) to elastically return inward to an undeformed state so as to be disposed adjacent to the inner blocking surface (63) of the lug (60), locking the protective cover (19) in a post-use final protective position. A return movement or force will cause the locking member (80, 81) to be further pushed below the inner blocking surface (63).