CN216294899U

CN216294899U - Disposable syringe capable of preventing secondary use

Info

Publication number: CN216294899U
Application number: CN202122659348.XU
Authority: CN
Inventors: 刘贞宽; 孙永; 刘压印; 马红旗
Original assignee: Shandong Chengwu Sainuo Medical Instruction Co ltd
Current assignee: Shandong Chengwu Sainuo Medical Instruction Co ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-04-15
Anticipated expiration: 2031-11-02

Abstract

The utility model belongs to the technical field of syringes, and particularly relates to a disposable syringe for preventing secondary use, which comprises a syringe body, wherein one end of the syringe body is provided with a joint, a needle head is arranged on the joint, a limit component is arranged in the joint and comprises a fixed plate fixedly arranged in the joint and a plug fixedly arranged on the inner side of the fixed plate, the plug is arranged at one end of the needle head, a pressing component is arranged on the outer side of the limit component, one end of the pressing component extends into the syringe body, one end of the syringe is provided with a connector, the connector is connected with the joint in an inserting manner, the connecting rod mutually matched with the limit component in the joint is arranged, when the injection is finished, the pressing component presses the fixed plate, the connecting rod is broken at a ring groove, and the plug enters the interior of the needle head under the pushing force, thereby blocking the needle head and avoiding the secondary use of the needle head.

Description

Disposable syringe capable of preventing secondary use

Technical Field

The utility model belongs to the technical field of syringes, and particularly relates to a disposable syringe capable of preventing secondary use.

Background

Syringes are common medical devices that primarily use needles to draw or inject gases or liquids, and syringes may also be used for medical devices, containers, and scientific instruments such as those used in chromatography to inject through rubber septa.

The injector can infect a user when being used continuously, and the existing injector has no limiting device, so that the injector can be reused and the life safety of people is jeopardized.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a disposable syringe capable of preventing secondary use, and aims to solve the problems that the existing syringe provided in the background technology is not provided with a limiting device, so that the syringe can be reused, and the life safety of people is endangered.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a prevent disposable syringe of secondary use, includes the syringe body, the one end of syringe body is equipped with the joint, be equipped with the syringe needle on the joint, the inside that connects is equipped with spacing subassembly, spacing subassembly is including fixed plate and the fixed plate inboard end cap that is equipped with of establishing in the joint, the one end at the syringe needle is established to the end cap, the outside of spacing subassembly is equipped with presses the subassembly, the one end of pressing the subassembly extends to the inside of syringe body.

Preferably, one end of the injector body is provided with a connector, the connector is connected with the connector in an inserting manner, one end, close to the connector, inside the injector body is provided with a hollow puncture needle, and the puncture needle is arranged on one side of the pressing assembly.

Preferably, the pressing assembly comprises a pressing rod and a pressing block fixedly connected with one end of the pressing rod, the pressing rod is slidably arranged in the interface, the pressing rod is of a cross-shaped structure, and the puncture needle is arranged on one side of the pressing block.

Preferably, the inner wall of the joint is fixedly provided with a limiting ring, the limiting ring is arranged between the limiting assembly and the pressing rod, and the limiting ring is of a circular structure.

Preferably, the outside of fixed plate is the annular array and is equipped with four connecting rods, the one end of connecting rod is fixed to be established on the inner wall that connects, be equipped with the annular on the connecting rod.

Preferably, the inside of syringe body is equipped with pushing assembly, pushing assembly includes piston and piston one end fixed connection's push rod, the piston slides and establishes in the inside of syringe body, the one end of push rod extends to the outside of syringe body.

Compared with the prior art, the utility model has the beneficial effects that:

(1) the utility model is provided with the connecting rod which is positioned in the joint and is matched with the limiting component, when the injection is finished, the pressing component presses the fixing plate, at the moment, the connecting rod is broken at the ring groove, and meanwhile, the plug enters the inside of the needle head under the thrust, so that the needle head is blocked, and the secondary use of the needle head is avoided.

(2) The utility model is provided with the puncture needle and the pressing block which are mutually matched and positioned in the syringe body, when the piston is pressed to the pressing block, the pressing block is pressed to the puncture needle, so that the puncture needle is extruded out of the syringe body, when the syringe body is used again, the liquid medicine leaks out of the syringe body through the hollow puncture needle, and the secondary use of the syringe body is avoided.

(3) The utility model is provided with the limiting ring which is fixedly connected in the joint, and when the joint is sleeved on the interface, the limiting ring prevents the interface from being directly extruded on the fixed plate, and prevents the plug head from directly blocking the needle head.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a schematic view of the interface of the present invention engaged with a pressing rod;

FIG. 4 is a schematic view of the connection rod and the fixing plate of the present invention;

FIG. 5 is a schematic view of the fitting and the stop collar of the present invention;

in the figure: 1. a needle head; 2. an injector body; 3. puncturing needle; 4. a push rod; 5. a piston; 6. an interface; 7. a pressing lever; 8. a plug; 9. a joint; 10. a connecting rod; 11. a limiting component; 12. a ring groove; 13. a limiting ring; 14. a pressing block; 15. and (7) fixing the plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a prevent disposable syringe of secondary use, includes syringe body 2, the one end of syringe body 2 is equipped with and connects 9, is equipped with syringe needle 1 on connecting 9, and the inside that connects 9 is equipped with spacing subassembly 11, and spacing subassembly 11 is including fixed end cap 8 of establishing fixed plate 15 and the fixed plate 15 inboard fixed being equipped with in connecting 9, and end cap 8 is established in the one end of syringe needle 1, and the outside of spacing subassembly 11 is equipped with presses the subassembly, and the one end of pressing the subassembly extends to the inside of syringe body 2.

Furthermore, one end of the injector body 2 is provided with a port 6, the port 6 is connected with a joint 9 in an inserting manner, one end of the interior of the injector body 2 close to the port 6 is provided with a hollow puncture needle 3, and the puncture needle 3 is arranged on one side of the pressing component.

Specifically, the pressing assembly comprises a pressing rod 7 and a pressing block 14 fixedly connected with one end of the pressing rod 7, the pressing rod 7 is arranged in the interface 6 in a sliding mode, the pressing rod 7 is of a cross structure, the puncture needle 3 is arranged on one side of the pressing block 14, the outer side of the pressing block 14 is of a bowl-shaped structure and is matched with one end of the piston 5, a limiting groove is formed in the injector body 2, the pressing block 14 can enter the limiting groove, the puncture needle 3 is arranged in the limiting groove, the limiting groove is not marked in the drawing, and when the pressing block 14 enters the limiting groove, liquid medicine in the injector body 2 can be completely extruded out of the injector body 2.

It is worth to be noted that, a limiting ring 13 is fixedly arranged on the inner wall of the joint 9, the limiting ring 13 is arranged between the limiting component 11 and the pressing rod 7, the limiting ring 13 is of a circular ring structure, and the limiting ring 13 prevents the interface 6 from being directly extruded onto the fixing plate 15 when being connected with the joint 9, so as to prevent the plug 8 from directly blocking the needle 1.

Further, the outside of fixed plate 15 is that the annular array is equipped with four connecting rods 10, and the one end of connecting rod 10 is fixed to be established on the inner wall that connects 9, is equipped with annular 12 on the connecting rod 10, and connecting rod 10 fastens the fixed plate in the inside that connects, and the annular lets the connecting rod directly fracture under the effect of external force simultaneously, makes things convenient for the end cap to get into the syringe needle, and the end cap is the metal material.

Further, the inside of syringe body 2 is equipped with the pushing assembly, and the pushing assembly includes

piston

5 and 5 one end fixed connection's of piston push rod 4, and piston 5 slides and establishes in the inside of syringe body 2, and the one end of push rod 4 extends to the outside of syringe body 2.

The working principle and the using process of the utility model are as follows: when the syringe is used, the push rod 4 is pushed, the liquid medicine in the syringe body 2 is pressed into the needle head 1 through the piston 5, when the piston 5 contacts the pressing block 14, the pressing block 14 is pressed on the puncture needle 3, so that the puncture needle 3 is extruded out of the syringe body 2, when the syringe body 2 is used again, the liquid medicine leaks out of the syringe body 2 through the hollow puncture needle 3, the pressing rod 7 slides into the connector 9 in the connector 6, the pressing rod 7 is pressed on the fixing plate 15, the connecting rod 10 is broken at the annular groove 12, the plug 8 enters the inside of the needle head 1 under the thrust, so that the needle head 1 is blocked, the needle head 1 is prevented from being used for the second time, when the connector 9 is sleeved on the connector 6, the limiting ring 13 prevents the connector 6 from being directly pressed on the fixing plate 15, and the plug 9 is prevented from directly blocking the needle head 1.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A disposable syringe for preventing secondary use is characterized in that: including syringe body (2), the one end of syringe body (2) is equipped with joint (9), be equipped with syringe needle (1) on joint (9), the inside that connects (9) is equipped with spacing subassembly (11), spacing subassembly (11) are including fixed end cap (8) of establishing fixed plate (15) and fixed plate (15) inboard fixed being equipped with in connecting (9), the one end in syringe needle (1) is established in end cap (8), the outside of spacing subassembly (11) is equipped with presses the subassembly, the one end of pressing the subassembly extends to the inside of syringe body (2).

2. A disposable syringe for preventing secondary use according to claim 1, wherein: one end of the injector body (2) is provided with a connector (6), the connector (6) is connected with a connector (9) in an inserting mode, one end, close to the connector (6), of the interior of the injector body (2) is provided with a hollow puncture needle (3), and the puncture needle (3) is arranged on one side of the pressing assembly.

3. A disposable syringe for preventing secondary use according to claim 2, wherein: the pressing assembly comprises a pressing rod (7) and a pressing block (14) fixedly connected with one end of the pressing rod (7), the pressing rod (7) is arranged in the interface (6) in a sliding mode, the pressing rod (7) is of a cross-shaped structure, and the puncture needle (3) is arranged on one side of the pressing block (14).

4. A disposable syringe for preventing secondary use according to claim 3, wherein: the inner wall of the joint (9) is fixedly provided with a limiting ring (13), the limiting ring (13) is arranged between the limiting component (11) and the pressing rod (7), and the limiting ring (13) is of a circular structure.

5. A disposable syringe for preventing secondary use according to claim 1, wherein: the outside of fixed plate (15) is the annular array and is equipped with four connecting rods (10), the one end of connecting rod (10) is fixed to be established on the inner wall that connects (9), be equipped with annular (12) on connecting rod (10).

6. A disposable syringe for preventing secondary use according to claim 1, wherein: the inside of syringe body (2) is equipped with the promotion subassembly, the promotion subassembly includes piston (5) and piston (5) one end fixed connection's push rod (4), piston (5) slide and establish the inside at syringe body (2), the one end of push rod (4) extends to the outside of syringe body (2).