Syringe

Abstract

The utility model relates to the technical field of medical instruments, and discloses an injector which comprises an injection cylinder and a core rod, a piston is installed at the end of the core rod and connected into the injection cylinder in a sliding mode, a cushion block is arranged on the end face, close to the piston, of the core rod, a buckle is arranged on the side face, close to the tail end, of the injection cylinder, and a buckle sleeve is connected to the surface of the injection cylinder in a sleeved mode. A bolt frame is connected to the retaining ring in a screwed mode, a pintle is connected to a suction nozzle of the syringe in an inserted mode, and the end, close to the suction nozzle of the syringe, of the bolt frame is connected to the pintle in a clamped mode. The syringe solves the problems that in the prior art, a large number of syringes need to be used during daily liquid preparation work, when the liquid preparation amount is large, a large amount of liquid medicine is extracted at a time, the liquid extraction amount can be ignored when a needle cylinder is pulled, consequently, a piston makes contact with the outside world and is polluted, the syringes are wasted, or a needle head on a pintle is inserted into a closed container too tightly, the pintle and the needle cylinder slip off when the pintle is separated, and the syringe cannot be used easily. Therefore, liquid leakage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a syringe. Background Art

[0002] A syringe is a common medical device, consisting of a cylindrical tube with a small hole at the front end and a matching piston core rod. It is used to inject and extract small amounts of liquid or gas from a closed container and is often used in medical or laboratory settings.

[0003] Depending on the usage, syringes are generally used to inject liquid medicine, or to increase or decrease the liquid medicine in a closed container to prepare the required liquid. In the prior art, a large number of syringes are needed for daily liquid preparation. When the amount of liquid to be prepared is large, more liquid medicine is extracted at one time, and the amount of liquid extracted will be ignored when the syringe is pulled out, resulting in the piston being contaminated by contact with the outside world, wasting the syringe, or the needle on the needle plug is too tightly connected to the closed container, and the needle plug and the syringe slip when separated, resulting in liquid leakage. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a syringe to solve the problems mentioned in the above background.

[0005] The utility model provides the following technical solution: a syringe, comprising: a syringe and a core rod, wherein a piston is installed at the end of the core rod and is slidably connected to the inside of the syringe, a cushion block is arranged on the end surface of the core rod close to the piston, a buckle is arranged on the side surface of the syringe close to the tail end, a buckle sleeve is sleeved on the surface of the syringe, a bolt rack is screwed on the buckle sleeve, a needle bolt is inserted on the suction nozzle of the syringe, and one end of the bolt rack close to the suction nozzle of the syringe is clamped on the needle bolt.

[0006] Preferably, a through groove is provided on the side surface of the injection barrel close to the tail end, the buckle is plugged into the inner wall of the through groove, and the plug-in end of the buckle corresponds to the position of the cushion block.

[0007] Preferably, the buckle includes a buckle plate, which is arc-shaped as a whole, and the curvature of the buckle plate corresponds to the curvature of the side of the injection barrel, and a positioning plate is integrally provided on the inner side of the arc of the buckle plate.

[0008] Preferably, the positioning plate is triangular in shape as a whole, the shape of the positioning plate is consistent with the angle shape of the ribs on the side of the core rod, and the position of the positioning plate corresponds to the position of the cushion block.

[0009] Preferably, the outer edge of the buckle plate is provided with a thread, the buckle sleeve is screwed on the buckle plate, two buckles are provided with the center of the injection barrel as the axis of symmetry, and the buckle plate threads in the two buckles match each other.

[0010] Preferably, the bolt bracket includes a first bracket and a second bracket, the first bracket and the second bracket are respectively located on both sides of the injection barrel, a plurality of connecting rods are provided on the first bracket and the second bracket, and the ends of the first bracket and the second bracket located at the injection barrel nozzle are respectively integrally provided with a first bolt hoop and a second bolt hoop.

[0011] Preferably, the first bolt hoop and the second bolt hoop are arc-shaped structures that match each other, and inner walls of the first bolt hoop and the second bolt hoop are provided with grooves that engage with the pintle, and the first bolt hoop and the second bolt hoop are clamped on the pintle through the grooves.

[0012] Preferably, an arc groove is provided on the outer edge of the first bolt hoop, a clamping block is integrally provided on the inner wall of the arc groove, a hook is integrally provided on the side of the second bolt hoop close to the first bolt hoop, the inner side of the hook away from one end of the second bolt hoop is inclined, a hook groove is provided on the inner wall of the hook, and the inner wall of the hook groove is clamped on the clamping block.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The syringe is provided with a buckle and a gasket. When a large amount of liquid is extracted during the process of dispensing liquid using the syringe, after the piston is pulled to a certain extent, the piston will be blocked by the buckle inserted into the syringe barrel through the gasket, so that the piston is kept at a sufficient distance from the outside, thereby avoiding the piston from contacting with the outside and being contaminated. At the same time, the buckle itself is a detachable structure, which will not affect the piston entering the syringe barrel when the syringe is produced.

[0015] 2. The syringe is provided with a buckle sleeve and a bolt bracket, and the buckle sleeve is screwed on the buckle to fix the buckle sleeve on the syringe barrel. The bolt bracket is then closed to clamp the needle bolt on the syringe nozzle to achieve the effect of fixing the needle bolt. When the needle on the needle bolt is inserted or pulled out, the needle bolt is not easy to fall off, thereby avoiding leakage and improving the stability of the structure on the syringe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the plug-in structure of the buckle and the injection barrel of the utility model;

[0019] Figure 4 This is a schematic diagram of the buckle and cushion block structure of the utility model;

[0020] Figure 5 This is a schematic diagram of the bolt bracket structure of the utility model.

[0021] In the figure: 1. syringe; 2. core rod; 3. buckle sleeve; 4. bolt bracket; 41. first bracket; 42. second bracket; 43. connecting rod; 44. first bolt hoop; 45. second bolt hoop; 46. arc groove; 47. clamping block; 48. hook; 5. through groove; 6. buckle; 61. buckle plate; 62. positioning plate; 7. cushion block; 8. needle bolt. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-5 The syringe comprises: a syringe barrel 1 and a core rod 2, a piston is installed at the end of the core rod 2 and is slidably connected to the inside of the syringe barrel 1, a cushion block 7 is arranged on the end surface of the core rod 2 close to the piston, a buckle 6 is arranged on the side of the syringe barrel 1 close to the tail end, a buckle sleeve 3 is sleeved on the surface of the syringe barrel 1, a bolt holder 4 is screwed on the buckle sleeve 3, a needle bolt 8 is inserted on the suction nozzle of the syringe barrel 1, and one end of the bolt holder 4 close to the suction nozzle of the syringe barrel 1 is clamped on the needle bolt 8.

[0024] Among them, a through groove 5 is opened on the side of the injection barrel 1 near the tail end, and the buckle 6 is inserted into the inner wall of the through groove 5. The plug-in end of the buckle 6 corresponds to the position of the cushion block 7. The buckle 6 is inserted from the outside of the injection barrel 1 using the through groove 5, so that the buckle 6 has the ability to be disassembled, and will not affect the piston entering the injection barrel 1 when the syringe is produced.

[0025] Among them, the buckle 6 includes a buckle plate 61, which is arc-shaped as a whole, and the curvature of the buckle plate 61 corresponds to the curvature of the side of the injection barrel 1. A positioning plate 62 is integrally provided on the arc-shaped inner side of the buckle plate 61. The buckle plate 61 is attached to the injection barrel 1 to create a locking effect on the positioning plate 62, so that the positioning plate 62 can form a certain degree of resistance, thereby blocking the piston.

[0026] Among them, the overall positioning plate 62 is triangular in shape, and the shape of the positioning plate 62 is consistent with the angle shape of the edge strips on the side of the core rod 2, and the position of the positioning plate 62 corresponds to the position of the cushion block 7. Setting the positioning plate 62 to a triangular shape can not only facilitate the insertion of the positioning plate 62 into the syringe 1, but also make the positioning plate 62 adapt to the shape of the side of the core rod 2. When the syringe is in use, the core rod 2 is limited to prevent it from rotating, thereby aligning the cushion block 7 with the positioning plate 62.

[0027] Among them, the outer edge of the buckle plate 61 is provided with a thread, the buckle sleeve 3 is screwed on the buckle plate 61, and two buckles 6 are provided with the center of the injection barrel 1 as the symmetry axis. The threads of the buckle plates 61 in the two buckles 6 match each other. By setting the thread, the buckle sleeve 3 is installed on the buckle plate 61, which can not only fix the buckle plate 61 and restrict the buckle plate 61 to the injection barrel 1, but also limit the bolt rack 4, so that the bolt rack 4 can stably clamp the needle bolt 8, forming sufficient pulling force, so that the needle bolt 8 can be plugged and pulled out to form a whole.

[0028] Among them, the bolt bracket 4 includes a first bracket 41 and a second bracket 42, and the first bracket 41 and the second bracket 42 are respectively located on both sides of the injection barrel 1. A plurality of connecting rods 43 are arranged on the first bracket 41 and the second bracket 42. The ends of the first bracket 41 and the second bracket 42 located at the nozzle of the injection barrel 1 are respectively integrally provided with a first bolt hoop 44 and a second bolt hoop 45. By arranging the first bracket 41 and the second bracket 42, the first bolt hoop 44 and the second bolt hoop 45 are together with the buckle sleeve 3, and the needle bolt 8 can be pushed away as the buckle sleeve 3 rotates, which has the ability to facilitate the removal of the needle bolt 8, avoid the kinetic energy of the needle tip to pierce the outside due to the removal of the needle bolt 8, and reduce the danger of it.

[0029] Among them, the first bolt hoop 44 and the second bolt hoop 45 are arc-shaped structures that match each other. The inner walls of the first bolt hoop 44 and the second bolt hoop 45 are provided with grooves that are engaged with the needle bolt 8. The first bolt hoop 44 and the second bolt hoop 45 are clamped on the needle bolt 8 through the grooves. By arranging the first bolt hoop 44 and the second bolt hoop 45, the first bolt hoop 44 and the second bolt hoop 45 can be combined to form a hoop to clamp the needle bolt 8, and at the same time have the ability to be disassembled, and the needle bolt 8 with a damaged needle tip can be replaced.

[0030] Among them, an arc groove 46 is formed on the outer edge of the first bolt hoop 44, and a clamping block 47 is integrally provided on the inner wall of the arc groove 46. A hook 48 is integrally provided on the side of the second bolt hoop 45 close to the first bolt hoop 44. The inner side of the hook 48 away from the end of the second bolt hoop 45 is inclined, and a hook groove is formed on the inner wall of the hook 48. The inner wall of the hook groove is clamped on the clamping block 47. By providing the hook 48, the first bolt hoop 44 and the second bolt hoop 45 can be clamped together, and after the pintle 8 is fixed, it can effectively prevent it from accidentally falling off.

[0031] Working principle: when using the syringe, first insert the buckle 6 into the through groove 5, and tighten the buckle 6 with the buckle sleeve 3, while clamping the bolt holder 4 on the needle bolt 8;

[0032] During the process of sucking the liquid medicine, if the amount of liquid medicine is large, after the piston is pulled outward to a certain extent along with the core rod 2, it is blocked by the contact between the pad 7 and the buckle 6, so as to avoid the piston from being contaminated by contact with the outside;

[0033] If the needle bolt 8 needs to be replaced, first rotate the buckle sleeve 3 so that the bolt frame 4 forms a thrust to push the needle bolt 8 away from the plug-in state, and then open the hook 48 to make it fall off from the plug-in state, thereby separating the hoop state of the first bolt hoop 44 and the second bolt hoop 45; after the needle bolt 8 is replaced, close the first bolt hoop 44 and the second bolt hoop 45, so that the hook 48 is inserted into the arc groove 46 through the inclined end and is clamped on the clamping block 47 by the hook groove of the inner wall, and then tighten the buckle sleeve 3 to improve the stability of the insertion of the needle bolt 8.

[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. A syringe, characterized in that include: A syringe (1) and a core rod (2), wherein a piston is mounted on the end of the core rod (2) and is slidably connected to the inside of the syringe (1), a cushion block (7) is arranged on the end surface of the core rod (2) close to the piston, a buckle (6) is arranged on the side surface of the syringe (1) close to the tail end, a buckle sleeve (3) is sleeved on the surface of the syringe (1), a bolt holder (4) is screwed on the buckle sleeve (3), a needle bolt (8) is inserted on the suction nozzle of the syringe (1), and one end of the bolt holder (4) close to the suction nozzle of the syringe (1) is clamped on the needle bolt (8).

2. The syringe according to claim 1, characterized in that A through slot (5) is provided on the side surface of the injection barrel (1) near the rear end, and the buckle (6) is plugged into the inner wall of the through slot (5), with the plugging end of the buckle (6) corresponding to the position of the cushion block (7).

3. The syringe according to claim 1, characterized in that The buckle (6) comprises a buckle plate (61), the buckle plate (61) being arc-shaped as a whole, and the curvature of the buckle plate (61) corresponds to the curvature of the side surface of the injection barrel (1), and a positioning plate (62) is integrally provided on the inner side of the arc of the buckle plate (61).

4. The syringe according to claim 3, characterized in that The positioning plate (62) is triangular in shape as a whole, the shape of the positioning plate (62) matches the shape of the angle of the ribs on the side of the core rod (2), and the position of the positioning plate (62) corresponds to the position of the cushion block (7).

5. The syringe according to claim 3, characterized in that The outer edge of the buckle plate (61) is provided with a thread, the buckle sleeve (3) is screwed onto the buckle plate (61), two buckles (6) are provided with the center of the injection barrel (1) as a symmetric axis, and the threads of the buckle plates (61) in the two buckles (6) match each other.

6. The syringe according to claim 1, characterized in that The bolt bracket (4) comprises a first bracket (41) and a second bracket (42), the first bracket (41) and the second bracket (42) being respectively located on both sides of the injection barrel (1), a plurality of connecting rods (43) being provided on the first bracket (41) and the second bracket (42), and a first bolt hoop (44) and a second bolt hoop (45) being respectively integrally provided at the ends of the first bracket (41) and the second bracket (42) located at the suction nozzle of the injection barrel (1).

7. The syringe according to claim 6, characterized in that The first bolt hoop (44) and the second bolt hoop (45) are arc-shaped structures that match each other. The inner walls of the first bolt hoop (44) and the second bolt hoop (45) are provided with grooves that are engaged with the needle bolt (8). The first bolt hoop (44) and the second bolt hoop (45) are clamped on the needle bolt (8) through the grooves.

8. The syringe according to claim 6, characterized in that An arc groove (46) is provided on the outer edge of the first bolt hoop (44), and a clamping block (47) is integrally provided on the inner wall of the arc groove (46). A clamping hook (48) is integrally provided on the side of the second bolt hoop (45) close to the first bolt hoop (44), and the inner side of the clamping hook (48) away from one end of the second bolt hoop (45) is inclined, and a hook groove is provided on the inner wall of the clamping hook (48), and the inner wall of the hook groove is clamped on the clamping block (47).

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