Anti-falling injector

Abstract

The utility model discloses an anti-falling injector which comprises a needle cylinder, a piston is vertically connected in the needle cylinder in a sliding mode, the top face of the piston is vertically and fixedly connected with a push rod, an anti-falling assembly is arranged on the top face of the needle cylinder and comprises a ring body fixedly connected to the top end of the needle cylinder, and a plurality of anti-falling grooves are vertically formed in the circumferential side of the ring body. The top end of the anti-falling groove is of an opening structure. The anti-drop syringe is provided with the anti-drop assembly, when the anti-drop syringe is used, a medical worker can put a finger on the lower abutting block for rapid injection, when it is detected that the finger is tired, the finger can be inserted into the through cavity to be pressed on the upper abutting block, in this way, the anti-drop block can fix the finger, the phenomenon that the syringe falls off due to finger fatigue is avoided, and after the piston is pressed to the bottom, the anti-drop syringe can be used conveniently. The fixed vertical plates can be inserted into the anti-falling grooves, the rubber plates make close contact with the arc-shaped protruding blocks to form friction force, the push rod is fixed in an auxiliary mode, and the phenomenon that the piston moves outwards due to the negative pressure influence is eradicated.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an anti-dropping syringe. Background Art

[0002] Vaccination is a technology of inoculating vaccine preparations into human or animal bodies to enable the recipient to gain immunity against a specific pathogen or a pathogen similar to the vaccine. During vaccination, it is common to use a syringe for injection. The syringe is one of the most commonly used medical devices. The drug is injected into the body by pushing the piston. Its structure is simple. For example, the Chinese utility model patent with the authorization announcement number CN203379432U discloses a vaccination syringe, which includes a syringe, a needle, and a piston. The front end surface of the syringe is provided with a protrusion, which is connected to the needle. The rear end surface of the piston inside the syringe is fixedly connected to a needle plug, and the front end surface is provided with a base, and the outer diameter of the base is adapted to the inner diameter of the protrusion. However, the current syringe has the following defects when used for vaccination:

[0003] During the vaccination process, medical staff often need to perform vaccination work continuously, which may cause finger fatigue. The current syringes use the fingers to block the horizontal handle on the top of the syringe and the thumb to press the push rod for injection. There is no good limiting structure, and the syringe is prone to fall off when the fingers are tired. During the injection, when the thumb presses the push rod to the bottom, after the thumb is removed, the piston sometimes moves outward due to negative pressure, which is not conducive to use.

[0004] For this reason, we propose an anti-dropping syringe to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide an anti-dropping syringe to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solutions: an anti-drop-off syringe, comprising a syringe, a piston vertically slidably connected inside the syringe, a push rod vertically fixed to the top surface of the piston, and an anti-drop-off component disposed on the top surface of the syringe;

[0007] The anti-slip assembly comprises a ring body fixedly connected to the top end of the syringe, a plurality of anti-slip grooves are vertically provided on the circumference of the ring body, the top end of the anti-slip groove is an open structure, a plurality of fixed vertical plates are fixedly connected to the circumference of the top of the push rod corresponding to the positions of the plurality of anti-slip grooves, the ends of the fixed vertical plates are inserted into the anti-slip grooves, a plurality of arc-shaped protrusions are fixedly connected to the two sides of the fixed vertical plates located in the anti-slip grooves, two rubber plates are fixedly connected to the two side walls of the anti-slip groove, and the rubber plates contact the plurality of arc-shaped protrusions;

[0008] Two horizontal handles are fixedly connected horizontally on both sides of the top of the ring body, two anti-slip blocks are fixedly connected to the bottom surfaces of the two horizontal handles, a through cavity is horizontally provided on the anti-slip block, a lower abutment block is fixedly connected to the bottom surface of the anti-slip block, and an upper abutment block is fixedly connected to the top surface of the through cavity.

[0009] Preferably, the bottom surface of the lower support block is fixedly connected to the lower silicone pad, and the bottom surface of the lower silicone pad is evenly provided with a plurality of first anti-slip stripes, and the bottom of the upper support block is fixedly connected to the upper silicone pad, and the bottom surface of the upper silicone pad is provided with a plurality of second anti-slip stripes.

[0010] Preferably, U-shaped silicone pads are fixedly connected to both sides and the bottom of the through cavity, the top of the push rod is fixedly connected to the push plate, the top surface of the push plate is fixedly connected to the anti-skid pad, and the top surface of the anti-skid pad is provided with a plurality of anti-skid grooves.

[0011] Preferably, the bottom end of the syringe is fixedly connected to and communicates with a connector, and a needle assembly is provided on the connector.

[0012] Preferably, the needle assembly comprises a needle seat, the bottom end of the needle seat is fixedly sleeved with a fixing block, and the top end of the injection needle is fixedly sleeved inside the fixing block.

[0013] Preferably, a cylindrical cavity is provided on the top surface of the needle seat, and the cylindrical cavity is sleeved on the joint. A plurality of slots are vertically provided on the circumference of the joint, and a plurality of arc-shaped clamping blocks are fixedly connected to the top positions of the plurality of slots. A plurality of guide blocks are fixedly connected to the inner side wall of the cylindrical cavity corresponding to the plurality of slots. The guide blocks are vertically slidably connected to the slots, and an arc opening is provided on the guide block near one end of the slot, and the arc opening is clamped with the arc-shaped clamping block. A sealing plug is fixedly connected to the bottom surface of the cylindrical cavity, and the sealing plug is interference fit on the inner side of the bottom end of the joint. A through hole is vertically provided on the sealing plug, and the through hole is connected to the injection needle.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model is provided with an anti-slip assembly, when in use, medical personnel can put their fingers on the lower push block and quickly perform injections, when they feel that their fingers are tired, they can insert their fingers into the through cavity and press them on the upper push block, so that the anti-slip block can fix the fingers and avoid the phenomenon of the syringe falling off due to finger fatigue, and after the piston is pressed to the bottom, the fixed vertical plate will be inserted into the anti-slip groove, the rubber plate will be in close contact with the arc-shaped protrusion to form friction, and the push rod will be auxiliary fixed to prevent the piston from moving outwards due to the influence of negative pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main structure in the first and second embodiments of the utility model;

[0017] Figure 2 It is a schematic diagram of the main body cutaway structure in the first and second embodiments of the utility model;

[0018] Figure 3 It is a schematic diagram of the cutaway structure of the anti-slip assembly in the first and second embodiments of the utility model;

[0019] Figure 4 This is a schematic diagram of the cross-section structure of the needle assembly in the second embodiment of the utility model.

[0020] In the figure: 1, syringe; 2, piston; 3, anti-slip assembly; 4, needle assembly; 11, joint; 12, slot; 13, arc-shaped block; 21, push rod; 22, push plate; 23, fixed vertical plate; 24, arc-shaped protrusion; 25, anti-skid pad; 26, anti-skid pattern; 31, ring body; 32, anti-slip groove; 33, rubber plate; 34, horizontal handle; 35, anti-slip block; 36, through cavity; 37, lower block; 38, lower silicone pad; 39, first anti-skid stripe; 310, upper block; 311, upper silicone pad; 312, second anti-skid stripe; 313, U-shaped silicone pad; 41, needle seat; 42, fixed block; 43, injection needle; 44, barrel cavity; 45, guide block; 46, arc mouth; 47, sealing plug; 48, through hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1:

[0023] See also Figure 1-3 The utility model provides a technical solution: an anti-dropping syringe, comprising a syringe 1, a piston 2 vertically slidably connected inside the syringe 1, a push rod 21 vertically fixed to the top surface of the piston 2, and an anti-dropping component 3 arranged on the top surface of the syringe 1;

[0024] The anti-slip assembly 3 includes a ring body 31 fixedly connected to the top of the syringe 1, and a plurality of anti-slip grooves 32 are vertically provided on the circumference of the ring body 31. The top of the anti-slip groove 32 is an open structure. A plurality of fixed vertical plates 23 are fixedly connected to the circumference of the top of the push rod 21 corresponding to the positions of the plurality of anti-slip grooves 32. The ends of the fixed vertical plates 23 are inserted into the anti-slip grooves 32. A plurality of arc-shaped protrusions 24 are fixedly connected to the two sides of the fixed vertical plates 23 located in the anti-slip grooves 32. Two rubber plates 33 are fixedly connected to the two side walls of the anti-slip grooves 32. The rubber plates 33 contact the plurality of arc-shaped protrusions 24. During injection, after the piston 2 is pressed to the bottom, the fixed vertical plates 23 will be inserted into the anti-slip grooves 32. The rubber plates 33 are in close contact with the arc-shaped protrusions 24 to form friction, which assists in fixing the push rod 21 and prevents the piston 2 from moving outwards due to negative pressure.

[0025] Two horizontal handles 34 are horizontally fixed to both sides of the top of the ring body 31, and two anti-slip blocks 35 are fixed to the bottom surfaces of the two horizontal handles 34. A through cavity 36 is horizontally opened on the anti-slip block 35. The bottom surface of the anti-slip block 35 is fixed to the lower push block 37, and the top surface of the through cavity 36 is fixed to the upper push block 310. When in use, medical staff can put their fingers on the lower push block 37 to quickly perform an injection. When the fingers are felt to be tired, the fingers can be inserted into the through cavity 36 and pressed on the upper push block 310. In this way, the anti-slip block 35 can fix the fingers to avoid the phenomenon of the syringe falling off due to finger fatigue.

[0026] Embodiment 2:

[0027] See also Figure 1-4 , which is the second embodiment of the utility model. This embodiment is based on the previous embodiment. The bottom surface of the lower stop block 37 is fixedly connected to the lower silicone pad 38, and the bottom surface of the lower silicone pad 38 is evenly provided with a plurality of first anti-slip stripes 39. The bottom of the upper stop block 310 is fixedly connected to the upper silicone pad 311, and the bottom surface of the upper silicone pad 311 is provided with a plurality of second anti-slip stripes 312. The silicone pad is used to increase friction to avoid slipping during injection.

[0028] The U-shaped silicone pads 313 are fixedly connected to the two sides and the bottom of the through cavity 36, the top of the push rod 21 is fixedly connected to the push plate 22, the top surface of the push plate 22 is fixedly connected to the anti-skid pad 25, and the top surface of the anti-skid pad 25 is provided with a plurality of anti-skid grooves 26 to increase the friction when the thumb is pressed.

[0029] The bottom end of the syringe 1 is fixedly connected to and communicates with a connector 11 , on which a needle assembly 4 is disposed.

[0030] The needle assembly 4 comprises a needle seat 41 , the bottom end of the needle seat 41 is fixedly sleeved with a fixing block 42 , and the top end of an injection needle 43 is fixedly sleeved inside the fixing block 42 .

[0031] A cylindrical cavity 44 is provided on the top surface of the needle seat 41, and the cylindrical cavity 44 is sleeved on the joint 11. A plurality of slots 12 are vertically provided on the circumference of the joint 11, and a plurality of arc-shaped blocks 13 are fixedly connected to the top positions of the plurality of slots 12. A plurality of guide blocks 45 are fixedly connected to the inner side wall of the cylindrical cavity 44 corresponding to the plurality of slots 12. The guide blocks 45 are vertically slidably connected to the slots 12. An arc opening 46 is provided on one end of the guide block 45 near the slots 12, and the arc opening 46 is clamped to the arc-shaped block 13. A sealing plug 47 is fixedly connected to the bottom surface of the cylindrical cavity 44, and the sealing plug 47 is interference fit on the inner side of the bottom end of the joint 11. A through hole 48 is vertically provided on the sealing plug 47, and the through hole 48 is connected to the injection needle 43. The needle seat 41 is fixed by clamping the arc opening 46 and the arc-shaped block 13, and the fixing effect is better.

[0032] Embodiment 3:

[0033] See also Figure 1-4, which is the third embodiment of the utility model. This embodiment is based on the above two embodiments. When the utility model is used, the medical staff presses the finger on the bottom surface of the lower block 37 and presses the push plate 22 to inject. When the finger is tired, the medical staff can insert the finger into the through cavity 36 and press the push plate 22 to inject. The utility model is provided with an anti-slip component 3. When in use, the medical staff can put the finger on the lower block 37 and quickly inject. When the finger is found to be tired, the finger can be inserted into the through cavity 36 and pressed on the upper block 310. In this way, the anti-slip block 35 can fix the finger to avoid the phenomenon of the syringe falling off due to finger fatigue, and after the piston 2 is pressed to the bottom, the fixed vertical plate 23 will be inserted into the anti-slip groove 32, and the rubber plate 33 will be in close contact with the arc-shaped protrusion 24 to form friction, which will assist in fixing the push rod 21 and prevent the piston 2 from moving outward due to negative pressure.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-drop syringe, comprising a syringe (1), characterized in that: The syringe (1) is vertically slidably connected to a piston (2), the top surface of the piston (2) is vertically fixed to a push rod (21), and the top surface of the syringe (1) is provided with an anti-drop assembly (3); The anti-slip assembly (3) comprises a ring body (31) fixedly connected to the top end of the syringe (1), a plurality of anti-slip grooves (32) are vertically provided on the circumference of the ring body (31), the top end of the anti-slip groove (32) is an open structure, a plurality of fixed vertical plates (23) are fixedly connected to the circumference of the top of the push rod (21) corresponding to the positions of the plurality of anti-slip grooves (32), the ends of the fixed vertical plates (23) are inserted into the anti-slip grooves (32), a plurality of arc-shaped protrusions (24) are fixedly connected to the two sides of the fixed vertical plates (23) located in the anti-slip grooves (32), two rubber plates (33) are fixedly connected to the two side walls of the anti-slip groove (32), and the rubber plates (33) contact the plurality of arc-shaped protrusions (24); Two horizontal handles (34) are horizontally fixedly connected to the two sides of the top of the ring body (31); the bottom surfaces of the two horizontal handles (34) are fixedly connected to two anti-slip blocks (35); a through cavity (36) is horizontally provided on the anti-slip block (35); the bottom surface of the anti-slip block (35) is fixedly connected to a lower stop block (37); and the top surface of the through cavity (36) is fixedly connected to an upper stop block (310).

2. The anti-dropping syringe according to claim 1, characterized in that: The bottom surface of the lower support block (37) is fixedly connected to the lower silicone pad (38), and the bottom surface of the lower silicone pad (38) is evenly provided with a plurality of first anti-slip stripes (39). The bottom of the upper support block (310) is fixedly connected to the upper silicone pad (311), and the bottom surface of the upper silicone pad (311) is provided with a plurality of second anti-slip stripes (312).

3. The anti-dropping syringe according to claim 1, characterized in that: The two sides and the bottom surface of the through cavity (36) are fixedly connected to U-shaped silicone pads (313), the top end of the push rod (21) is fixedly connected to the push plate (22), the top surface of the push plate (22) is fixedly connected to the anti-skid pad (25), and the top surface of the anti-skid pad (25) is provided with a plurality of anti-skid grooves (26).

4. The anti-dropping syringe according to claim 1, characterized in that: The bottom end of the syringe (1) is fixedly connected to and communicates with a connector (11), and a needle assembly (4) is provided on the connector (11).

5. The anti-dropping syringe according to claim 4, characterized in that: The needle assembly (4) comprises a needle seat (41), the bottom end of the needle seat (41) is fixedly sleeved with a fixing block (42), and the top end of the injection needle (43) is fixedly sleeved inside the fixing block (42).

6. The anti-dropping syringe according to claim 5, characterized in that: The top surface of the needle seat (41) is provided with a cylindrical cavity (44), and the cylindrical cavity (44) is sleeved on the joint (11). The circumference of the joint (11) is provided with a plurality of slots (12) vertically, and a plurality of arc-shaped clamping blocks (13) are fixedly connected to the top positions of the plurality of slots (12). The inner wall of the cylindrical cavity (44) is fixedly connected with a plurality of guide blocks (45) corresponding to the positions of the plurality of slots (12). The guide blocks (45) are vertically slidably connected to the slots (12). The guide blocks (45) are provided with an arc opening (46) near one end of the slots (12), and the arc opening (46) is clamped with the arc-shaped clamping blocks (13). The bottom surface of the cylindrical cavity (44) is fixedly connected with a sealing plug (47), and the sealing plug (47) is interference-fitted on the inner side of the bottom end of the joint (11). A through hole (48) is vertically provided on the sealing plug (47), and the through hole (48) is connected to the injection needle (43).

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