Disposable self-destruction syringe

Abstract

The utility model relates to the technical field of medical instruments, in particular to a disposable self-destruction syringe which comprises a needle cylinder, and ejector pins are symmetrically installed on the two sides of one end in the needle cylinder. When injection is finished, the piston is attached to one end of the interior of the needle cylinder, the ejector pin synchronously pierces the piston and extends into a circular ring so as to damage the piston, meanwhile, a clamping block is connected into a limiting groove, one end of the piston is fixed into the needle cylinder and cannot be pulled out, and secondary use is avoided; the middle position of the hourglass-shaped connecting block is broken by rotating the connecting pipe with force, so that the connecting pipe and the sleeve are separated to damage the joint of the needle head, and the problem that a traditional syringe is easy to recycle after being used due to the fact that the traditional syringe does not have self-destruction and destruction functions is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a disposable self-destructing syringe. Background Technology

[0002] In today's rapidly developing medical field, safe, efficient, and convenient medical devices have become an indispensable part of ensuring patients' health and safety. Among them, disposable syringes are one of the most basic and widely used tools in the modern medical system. Made of high-quality plastic materials, disposable syringes are ingeniously designed and easy to operate. They mainly consist of a syringe barrel, piston, needle, and cap. The syringe barrel has high transparency, making it easy for medical staff to accurately read the drug dosage. The piston slides smoothly, ensuring the uniformity and accuracy of drug injection. Single use avoids the possibility of cross-infection and is an important measure to prevent blood-borne diseases (such as AIDS, hepatitis, etc.). However, because traditional syringes do not have self-destruct or destructive functions, it is very common for used disposable syringes to be recycled, rinsed, disinfected, repackaged, and resold, which poses a threat to people's health and life. Therefore, they have certain drawbacks.

[0003] In summary, this invention solves the existing problems by designing a disposable self-destructing syringe. Utility Model Content

[0004] The purpose of this invention is to provide a disposable self-destructing syringe to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A disposable self-destructing syringe includes a syringe. Symmetrically mounted ejector pins are installed on both sides of one end of the syringe. A limiting groove is formed on the inner sidewall of the syringe near the two ejector pins. A piston is installed inside the syringe near the limiting groove. A ring is installed on one end of the piston. Fixing blocks are symmetrically mounted on both sides of the outer side of the ring away from the piston. A sliding groove is formed on one side of the outer surface of the fixing blocks. A return spring is installed on the inner sidewall of the sliding groove. A locking block is installed at one end of the return spring inside the sliding groove. Connecting posts are symmetrically mounted on both ends of the outer side of the ring, on the same side as the two fixing blocks. A movable block is installed at the end of the connecting post away from the ring. A piston rod is installed at the outer end of the movable block away from the two connecting posts. A piston handle is installed at one end of the piston rod outside the syringe.

[0007] A fixing tube is installed at one end of the syringe. A sleeve is installed on the outer ring surface of the fixing tube. A groove is opened at one end of the outer ring of the sleeve. A sealing groove is opened at one end of the inner ring of the groove. A connecting tube is installed inside the sealing groove. Several hourglass-shaped connecting blocks are installed at equal intervals along one edge of the outer ring surface of the connecting tube. A needle is installed at the outer end of the connecting tube away from the sleeve.

[0008] As a preferred embodiment of this utility model, the piston, the ring, and the movable block are all slidably connected to the inner wall of the syringe, and when the piston is in contact with the inner end of the syringe, the ejector pin simultaneously pierces the piston and extends into the inside of the ring.

[0009] As a preferred embodiment of this utility model, the outer side of the card block is slidably connected to the inner sidewall of the slide groove, and the thickness of the card block is consistent with the width of the limiting groove.

[0010] As a preferred embodiment of this utility model, the outer ring surface size of one end of the connecting pipe matches the inner wall size of the sealing groove, and the connecting pipe is easily fitted to one end of the fixed pipe by being inserted into the inner sealing groove of the sleeve.

[0011] As a preferred embodiment of this utility model, anti-slip textures are provided on the outer ring surfaces of both the connecting pipe and the sleeve.

[0012] As a preferred embodiment of this utility model, the end of the hourglass-shaped connecting block away from the connecting pipe is fixedly connected to the inner sidewall of the groove, and the middle part of the hourglass-shaped connecting block is provided with a fracture line.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In this utility model, a disposable self-destructing syringe is designed so that when the injection is completed, the piston and the inner end of the syringe barrel are attached to each other, and the ejector pin simultaneously pierces the piston and extends into the inner ring, thereby destroying the piston. At the same time, the locking block is inserted into the inner limit groove to fix one end of the piston inside the syringe barrel and cannot be pulled out, thus avoiding secondary use. By forcefully rotating the connecting tube, the middle position of the hourglass-shaped connecting block is broken, thereby separating the connecting tube and the sleeve and destroying the connection of the needle. This effectively solves the problem that traditional syringes do not have self-destruct or destruction functions, which makes them easy to recycle and reuse after use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This utility model Figure 1 Internal structure diagram;

[0017] Figure 3This utility model Figure 2 Schematic diagram of structural layering;

[0018] Figure 4 This utility model Figure 3 Partial structural diagram;

[0019] Figure 5 This utility model Figure 4 Partial internal structural diagram;

[0020] Figure 6 This utility model Figure 2 Partial structural diagram;

[0021] Figure 7 This utility model Figure 6 Schematic diagram of the structural layers.

[0022] In the diagram: 1. Syringe; 101. Limiting groove; 2. Ejector pin; 3. Piston; 4. Ring; 5. Fixing block; 501. Slide groove; 6. Return spring; 7. Locking block; 8. Connecting post; 9. Movable block; 10. Piston rod; 11. Piston handle; 12. Fixing tube; 13. Sleeve; 1301. Groove; 1302. Sealing groove; 14. Connecting tube; 15. Hourglass-shaped connecting block; 16. Needle. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, and several embodiments of the utility model will be provided. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and complete.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] For examples, please refer to Figure 1-7 This utility model provides a technical solution:

[0028] A disposable self-destructing syringe includes a syringe 1. Two ejector pins 2 are symmetrically mounted on both sides of one end of the syringe 1. A limiting groove 101 is formed on the inner wall of the syringe 1 near the two ejector pins 2. A piston 3 is mounted on the inner wall of the syringe 1 near the limiting groove 101. A ring 4 is mounted on one end of the piston 3. Fixing blocks 5 are symmetrically mounted on both sides of the outer end of the ring 4 away from the piston 3. A sliding groove 501 is formed on one side of the outer surface of the fixing block 5. A return spring 6 is mounted on one side wall of the inner surface of the sliding groove 501. A locking block 7 is mounted on one end of the return spring 6 inside the sliding groove 501. Connecting posts 8 are symmetrically mounted on both ends of the outer surface of the ring 4 on the same side as the two fixing blocks 5. A movable block 9 is mounted on the end of the connecting post 8 away from the ring 4. A piston rod 10 is mounted on the outer end of the movable block 9 away from the two connecting posts 8. A piston handle 11 is mounted on one end of the piston rod 10 outside the syringe 1.

[0029] A fixing tube 12 is installed at one end of the syringe 1. A sleeve 13 is installed on the outer ring surface of the fixing tube 12. A groove 1301 is opened at one end of the outer ring surface of the sleeve 13. A sealing groove 1302 is opened at one end of the inner ring surface of the groove 1301. A connecting tube 14 is installed inside the sealing groove 1302. Several hourglass-shaped connecting blocks 15 are installed at equal intervals at one edge of the outer ring surface of the connecting tube 14. A needle 16 is installed at the outer end of the connecting tube 14 away from the sleeve 13.

[0030] For details, please refer to Figure 2 , Figure 3 and Figure 4 The piston 3, the ring 4, and the movable block 9 are all slidably connected to the inner wall of the syringe 1. When the piston 3 is in contact with the inner end of the syringe 1, the ejector needle 2 simultaneously pierces the piston 3 and extends into the inner wall of the ring 4, thus ensuring that the piston rod 10 moves inside the syringe 1 by pushing the piston handle 11. When the piston rod 10 moves to the left, the piston 3, the ring 4, and the movable block 9 move to the left simultaneously. The liquid medicine is injected into the patient's body through the fixed tube 12 from the inside of the syringe 1 to the inside of the connecting tube 14 and finally through the needle 16. When the injection is completed, the piston 3 is in contact with the inner end of the syringe 1, and the ejector needle 2 simultaneously pierces the piston 3 and extends into the inner wall of the ring 4, thereby destroying the piston 3.

[0031] Furthermore, the outer side of the locking block 7 is slidably connected to the inner sidewall of the slide groove 501, and the thickness of the locking block 7 is consistent with the width of the limiting groove 101. This ensures that when the ring 4 moves inside the syringe 1, the locking block 7 is pressed inside the slide groove 501 and the return spring 6 is compressed. When the injection is completed, the piston 3 is attached to one end of the syringe 1, and the slide groove 501 is attached to the limiting groove 101. The restriction of the return spring 6 is released, causing the locking block 7 to be engaged inside the limiting groove 101, thereby fixing one end of the piston 3 inside the syringe 1 and preventing it from being pulled out, thus avoiding secondary use.

[0032] Furthermore, the outer ring size of one end of the connecting tube 14 matches the inner wall size of the sealing groove 1302, and the connecting tube 14 is easily fitted with one end of the fixing tube 12 by being inserted into the inner sealing groove 1302 of the sleeve 13, thereby facilitating the injection of the medicine through the fixing tube 12 into the inner part of the connecting tube 14 via the needle 16, and facilitating the subsequent separation of the connecting tube 14 from the sleeve 13.

[0033] Furthermore, anti-slip textures are provided on the outer ring surfaces of both the connecting tube 14 and the sleeve 13, thereby increasing the friction between the fingers and preventing slippage when the connecting tube 14 and the sleeve 13 need to be separated.

[0034] For specific details, please refer to the following: Figure 6 and Figure 7 The end of the hourglass-shaped connecting block 15 away from the connecting tube 14 is fixedly connected to the inner wall of the groove 1301. The hourglass-shaped connecting block 15 has a fracture line in the middle, which ensures that the needle 16 is detachable from the fixed tube 12, thus avoiding the reuse of the needle 16. After the injection is completed, the fingers of both hands pinch the sleeve 13 and the connecting tube 14 respectively, and then the connecting tube 14 is rotated forcefully to break the hourglass-shaped connecting block 15 in the middle, thereby separating the connecting tube 14 and the sleeve 13 and destroying the connection of the needle 16.

[0035] The working process of this utility model is as follows: Using the disposable self-destructing syringe designed in this scheme, during its use, the piston rod 10 moves inside the syringe barrel 1 by pushing the piston handle 11. When the piston rod 10 moves to the left, the piston 3, ring 4, and movable block 9 move to the left simultaneously. The medication is injected into the patient's body through the fixed tube 12, the connecting tube 14, and finally through the needle 16. When the injection is complete, the piston 3 is in contact with one end of the syringe barrel 1, and the ejector needle 2 simultaneously pierces the piston 3 and extends into the ring 4, thus destroying the piston 3. During the injection process, when the ring 4 moves inside the syringe barrel 1, the locking block 7 is squeezed inside the slide groove 501, compressing the return spring 6. When the injection is complete, the piston 3 is in contact with one end of the syringe barrel 1, and the slide groove 501 and the limiting... When the positioning groove 101 is engaged, the restriction of the reset spring 6 is released, causing the locking block 7 to engage inside the limiting groove 101, thereby fixing one end of the piston 3 inside the syringe 1 and preventing it from being pulled out, thus avoiding secondary use. Furthermore, since the entire part of the traditional needle 16 is detachable from the fixing tube 12, the needle 16 is not reused. After injection, the fingers of both hands pinch the sleeve 13 and the connecting tube 14 respectively, and then forcefully rotate the connecting tube 14, causing the hourglass-shaped connecting block 15 to break in the middle, thereby separating the connecting tube 14 and the sleeve 13 and destroying the connection of the needle 16. The outer ring surfaces of the connecting tube 14 and the sleeve 13 are provided with anti-slip textures to increase the friction between the fingers and prevent slippage. Thus, by setting multiple destruction points on the syringe, it is ensured that the syringe can only be used once.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A disposable self-destructing syringe, comprising a syringe (1), characterized in that: The syringe (1) has two symmetrically mounted ejector pins (2) on both sides of one end inside. A limiting groove (101) is formed on the inner wall of the syringe (1) near the two ejector pins (2). A piston (3) is mounted inside the syringe (1) near the limiting groove (101). A ring (4) is mounted on one end of the piston (3). Fixing blocks (5) are symmetrically mounted on both sides of the outer end of the ring (4) away from the piston (3). A sliding groove (501) is formed on one side of the outer surface of the fixing block (5). The sliding groove (501)... A return spring (6) is installed on one side wall of the inner side. A locking block (7) is installed at one end of the return spring (6) and inside the slide groove (501). Connecting columns (8) are symmetrically installed at both ends of the outer side of the ring (4) and on the same side of the two fixed blocks (5). A movable block (9) is installed at the end of the connecting column (8) away from the ring (4). A piston rod (10) is installed at the end of the movable block (9) away from the two connecting columns (8). A piston handle (11) is installed at one end of the piston rod (10) and outside the syringe (1). A fixing tube (12) is installed at one end of the syringe (1). A sleeve (13) is installed on the outer ring surface of the fixing tube (12). A groove (1301) is opened at one end of the outer side of the sleeve (13). A sealing groove (1302) is opened at one end of the inner side of the groove (1301). A connecting tube (14) is installed inside the sealing groove (1302). Several hourglass-shaped connecting blocks (15) are installed at equal intervals at one edge of the outer ring surface of the connecting tube (14). A needle (16) is installed at the outer end of the connecting tube (14) away from the sleeve (13).

2. The disposable self-destructing syringe according to claim 1, characterized in that: The piston (3), the ring (4) and the movable block (9) are all slidably connected to the inner wall of the syringe (1), and when the piston (3) is in contact with the inner end of the syringe (1), the needle (2) simultaneously pierces the piston (3) and extends into the inside of the ring (4).

3. The disposable self-destructing syringe according to claim 1, characterized in that: The outer side of the card block (7) is slidably connected to the inner sidewall of the slide groove (501), and the thickness of the card block (7) is consistent with the width of the limiting groove (101).

4. The disposable self-destructing syringe according to claim 1, characterized in that: The outer ring size of one end of the connecting pipe (14) matches the inner wall size of the sealing groove (1302), and the connecting pipe (14) is connected to the inside of the sealing groove (1302) of the sleeve (13) to facilitate fitting with one end of the fixed pipe (12).

5. The disposable self-destructing syringe according to claim 1, characterized in that: The outer ring surfaces of both the connecting pipe (14) and the sleeve (13) are provided with anti-slip textures.

6. The disposable self-destructing syringe according to claim 1, characterized in that: The end of the hourglass-shaped connecting block (15) away from the connecting pipe (14) is fixedly connected to the inner sidewall of the groove (1301), and the middle part of the hourglass-shaped connecting block (15) is provided with a fracture.

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