Rubber plug for self-destruction syringe
By designing a self-destructive plug in the syringe and using the structure of elastic parts and breaking grooves, the problem of the easy reuse of traditional syringes is solved, and the single-use and self-destructive functions of the syringe are realized, reducing the risk of cross-infection.
Patent Information
- Application Number
- CN202421418836.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-06-20
AI Technical Summary
Traditional syringes are at risk of misuse or reusing after use, increasing the possibility of cross-infection and threatening the safety of patients and healthcare workers.
A rubber plug for self-destructive syringe is designed. By setting cavity grooves and elastic parts on the left and right sides above the inner wall of the syringe cylinder, combined with the design of the first and second piston rods, the rubber plug head cannot be pulled out again after use, and through the structure of the breaking grooves and reinforcement blocks, the rubber plug body loses integrity after use, realizing the self-destructive function of the syringe.
It effectively prevents the reuse of syringes, reduces the risk of cross-infection, ensures the single use of syringes, and improves the safety of use.
Smart Images
Figure CN222871087U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of syringes, in particular to a rubber plug for a self-destructive syringe. Background Art
[0002] The syringe is a common medical device. As early as the 15th century, the Italian Catinel proposed the principle of the syringe. The needle is mainly used to extract or inject gas or liquid. The syringe can also be used for medical equipment, containers, such as some scientific instruments in chromatography to inject through the rubber diaphragm. Its structure consists of a syringe, a needle tube, a rubber stopper rod and a rubber stopper head.
[0003] Traditional syringes often have the risk of being misused or reused after use, which not only increases the possibility of cross infection, but also poses a threat to the safety of patients and medical staff. In response to the above situation, we have launched a self-destructive rubber stopper for syringes. Utility Model Content
[0004] The utility model aims to provide a rubber stopper for a self-destructive syringe to solve the problem of the risk of misuse or repeated use mentioned in the above background technology.
[0005] The technical solution of the utility model is:
[0006] An injection cylinder body, wherein a rubber plug head is slidably connected to the inside of the injection cylinder body, a cavity groove is opened on the left and right sides of the upper inner wall of the injection cylinder body, an elastic member is fixedly connected to the inner wall of the cavity groove, a connecting shaft is arranged in front of the elastic member, and the connecting shaft is rotatably connected to the inner wall of the cavity groove, an outer wall of the connecting shaft is connected to a movable plate, and a limit block is fixedly connected to the lower end of the front end surface of the movable plate;
[0007] The lower end of the rubber plug head is fixedly connected to a first piston rod, the lower end of the first piston rod is fixedly connected to a first reinforcement block, the lower end of the first reinforcement block is connected to a second reinforcement block, a breaking groove is provided at the connection between the first reinforcement block and the second reinforcement block, and the lower end of the second reinforcement block is connected to a second piston rod.
[0008] Furthermore, four groups of positioning plates are fixedly connected to the outer wall of the second piston rod, and the positioning plates are slidably connected to the injection cylinder body, and four groups of movable grooves are opened on the inner wall of the injection cylinder body.
[0009] When the stopper head reaches the top of the injection cylinder, the positioning plate and the movable groove are in corresponding positions, ensuring that the second piston rod can move forward, backward, left and right in the movable groove through the positioning plate, and the second piston rod can be shaken at this time.
[0010] Furthermore, the front and rear walls of the rubber plug head are fixedly connected with a slider, the front and rear sides of the inner wall of the injection cylinder are provided with a positioning groove, and the slider is slidably connected to the positioning groove.
[0011] The rubber plug head is compressed inside the positioning groove by a slider, so as to avoid shaking of the rubber plug head during compression, and ensure stability and that the positioning plate and the movable groove are in corresponding positions.
[0012] The utility model provides a self-destructive syringe plug through improvement, which has the following improvements and advantages compared with the prior art:
[0013] First, in the utility model, when the upper end surface of the rubber plug head contacts the top end of the injection barrel, the elastic member restores its elasticity, and the upper end surface of the limit block presses against the rubber plug head to prevent the rubber plug head from being pulled out again, thereby realizing the disposable use of the syringe and effectively preventing the risk of repeated use.
[0014] Secondly, in the utility model, when the rubber stopper head reaches the top end of the injection cylinder, the positioning plate and the movable groove are in corresponding positions, ensuring that the second piston rod can move forward, backward, left and right inside the movable groove through the positioning plate. At this time, the second piston rod can be shaken to make the second reinforcement block pass through the breaking groove and the first reinforcement block and break under the action of external force, so that the rubber stopper body loses its integrity, further realizing the self-destruction function of the syringe, which is easy to operate, can effectively prevent the reuse of the syringe and reduce the risk of cross infection. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:
[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 internal connection structure of the injection cylinder of the utility model;
[0018] Figure 3 It is a schematic diagram of the internal connection structure of the cavity groove of the utility model.
[0019] Explanation of the accompanying drawings: 1. Injection barrel; 2. Rubber plug head; 3. Cavity groove; 301. Elastic member; 302. Connecting shaft; 303. Movable plate; 304. Limit block; 4. First piston rod; 401. First reinforcement block; 402. Fracture groove; 403. Second reinforcement block; 404. Second piston rod; 5. Positioning plate; 501. Movable groove; 6. Positioning groove; 7. Slider; 8. Protrusion; 9. Recess. DETAILED DESCRIPTION
[0020] The following will be combined with the attached Figures 1 to 3The utility model is described in detail, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of 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.
[0021] The utility model provides a self-destructive syringe plug through improvement. Figure 1-Figure 3 As shown, it includes an injection barrel 1, a rubber plug head 2 is slidably connected inside the injection barrel 1, a cavity groove 3 is opened on the left and right sides of the upper inner wall of the injection barrel 1, an elastic member 301 is fixedly connected to the inner wall of the cavity groove 3, a connecting shaft 302 is arranged in front of the elastic member 301, and the connecting shaft 302 is rotatably connected to the inner wall of the cavity groove 3, an outer wall of the connecting shaft 302 is connected to a movable plate 303, and a limit block 304 is fixedly connected to the lower end of the front end surface of the movable plate 303;
[0022] The lower end of the stopper head 2 is fixedly connected to the first piston rod 4, the lower end of the first piston rod 4 is fixedly connected to the first reinforcement block 401, the lower end of the first reinforcement block 401 is connected to the second reinforcement block 403, a breaking groove 402 is provided at the connection between the first reinforcement block 401 and the second reinforcement block 403, the lower end of the second reinforcement block 403 is connected to the second piston rod 404, the outer wall of the second piston rod 404 is fixedly connected to four groups of positioning plates 5, and the positioning plates 5 are in close fitting and sliding connection with the injection cylinder body 1, and the inner wall of the injection cylinder body 1 is provided with four groups of movable grooves 501.
[0023] In this embodiment: when the plug head 2 moves to the top of the injection cylinder body 1, the plug head 2 slides upward along the inner wall of the injection cylinder body 1, and the upper end surface of the plug head 2 contacts the lower end surface inclined groove of the limit block 304. The limit block 304 and the movable plate 303 rotate along the connecting shaft 302 on the inner wall of the cavity groove 3 and are compressed by the U-shaped elastic member 301. When the upper end surface of the plug head 2 contacts the top of the injection cylinder body 1, the elastic member 301 restores its elasticity, and the upper end surface of the limit block 304 supports the plug head 2 to prevent the plug head 2 from being pulled out again, thereby realizing the disposable use of the syringe and effectively preventing the risk of repeated use. Then the first piston rod 4 and the second piston rod 404 are used to push the plug head 2, and the first piston rod 404 and the second piston rod 404 are used to push the plug head 2. The second piston rod 404 slides along the inner wall of the injection cylinder 1 through the positioning plate 5 to ensure the stability of the second piston rod 404 when compressed. When the plug head 2 reaches the top of the injection cylinder 1, the positioning plate 5 and the movable groove 501 are in corresponding positions to ensure that the second piston rod 404 can move forward, backward, left and right inside the movable groove 501 through the positioning plate 5. At this time, the second piston rod 404 can be shaken to make the second reinforcement block 403 pass through the breaking groove 402 and the first reinforcement block 401 and break under the action of external force, so that the plug body loses its integrity, further realizing the self-destruction function of the syringe, which is easy to operate and can effectively prevent the reuse of the syringe and reduce the risk of cross infection.
[0024] In addition, the connection of the fracture groove 402 is made of a material that is easy to fracture.
[0025] In a preferred embodiment, the front and rear walls of the plug head 2 are fixedly connected with a slider 7, the front and rear sides of the inner wall of the injection barrel 1 are provided with a positioning groove 6, and the slider 7 is slidably connected to the positioning groove 6. The plug head 2 is compressed inside the positioning groove 6 by the slider 7 to avoid shaking of the plug head 2 during compression, thereby ensuring stability and ensuring that the positioning plate 5 and the movable groove 501 are in corresponding positions.
[0026] In a preferred embodiment, a protrusion 8 is fixedly connected to the upper end of the limit block 304, and a groove 9 is provided at the edge of the lower end surface of the plug head 2. When the limit block 304 is against the plug head 2, the protrusion 8 on the limit block 304 is snap-connected with the groove 9, thereby improving the stability of the connection.
[0027] In a preferred embodiment, the elastic member 301 is in a U-shaped structure and is made of elastomeric plastic.
[0028] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A rubber stopper for a self-destructive syringe, characterized in that: The invention comprises an injection cylinder (1), wherein a rubber plug head (2) is slidably connected to the inside of the injection cylinder (1), a cavity groove (3) is opened on the left and right sides of the upper inner wall of the injection cylinder (1), an elastic member (301) is fixedly connected to the inner wall of the cavity groove (3), a connecting shaft (302) is arranged in front of the elastic member (301), and the connecting shaft (302) is rotatably connected to the inner wall of the cavity groove (3), the outer wall of the connecting shaft (302) is connected to a movable plate (303), and the lower end of the front end surface of the movable plate (303) is fixedly connected to a limiting block (304); The lower end of the rubber plug head (2) is fixedly connected to a first piston rod (4), the lower end of the first piston rod (4) is fixedly connected to a first reinforcement block (401), the lower end of the first reinforcement block (401) is connected to a second reinforcement block (403), a fracture groove (402) is provided at the connection between the first reinforcement block (401) and the second reinforcement block (403), and the lower end of the second reinforcement block (403) is connected to a second piston rod (404).
2. A rubber stopper for a self-destructive syringe according to claim 1, characterized in that: Four sets of positioning plates (5) are fixedly connected to the outer wall of the second piston rod (404), and the positioning plates (5) are connected to the injection cylinder (1) in a close-fitting and sliding manner.
3. The rubber plug for a self-destructive syringe according to claim 1, characterized in that: The inner wall of the injection cylinder (1) is provided with four groups of movable grooves (501).
4. The rubber plug for a self-destructive syringe according to claim 1, characterized in that: The front and rear walls of the rubber plug head (2) are fixedly connected with a slider (7), the front and rear sides of the inner wall of the injection barrel (1) are provided with a positioning groove (6), and the slider (7) is slidably connected with the positioning groove (6).
5. The rubber stopper for a self-destructive syringe according to claim 1, characterized in that: A protrusion (8) is fixedly connected to the upper end of the limiting block (304).
6. The rubber plug for a self-destructive syringe according to claim 1, characterized in that: A groove (9) is provided at the edge of the lower end surface of the rubber plug head (2).
7. The rubber stopper for a self-destructive syringe according to claim 1, characterized in that: The elastic member (301) has a U-shaped structure.