Plastic medical PE bottle injector sealing structure

Abstract

The utility model relates to the technical field of injectors, in particular to a plastic medical PE bottle injector sealing structure which comprises a tube body, an installation block is fixedly connected to the left end of the tube body, two sealing grooves are formed in the inner side and the outer side of the installation block respectively, a sealing cover is arranged outside the installation block in a sleeved mode, and the sealing cover is connected with the tube body in a sleeved mode. The inner wall of the sealing cover is fixedly connected with two sealing rings, the sealing rings are matched with the sealing grooves, and the close sides of the sealing rings on the inner side and the outer side are attached to the interiors of the sliding grooves in the inner side and the outer side respectively; the sealing device has the beneficial effects that the mounting block is mounted outside the needle head, the sealing groove is formed in the outer side of the mounting block, and the joint of the sealing cover and the mounting block is designed to be hollow, so that after the sealing cover is connected with the mounting block, the needle head can be subjected to multi-stage sealing, and the influence of extreme weather on the sealing ring is greatly reduced; therefore, the sealing effect is improved, and the syringe and liquid medicine in the syringe can be stored for a longer time.

Description

Technical Field

[0001] The utility model relates to the technical field of syringes, in particular to a sealing structure for a plastic medical PE bottle syringe. Background Technique

[0002] A syringe is a common medical tool, mainly used to draw or inject gas or liquid with a needle. When storing liquid medicines such as insulin, vaccines, and heparin, they are generally directly stored inside the syringe, making it more convenient to use. And a sealing structure is used to seal the liquid medicine to achieve the effect of long-term preservation.

[0003] The sealing structures in the prior art are generally installed at the connection between the piston and the needle, so that the liquid medicine will not leak. And in order to prevent the needle from being contaminated, a sealing cover is generally installed outside the needle. In order to improve the sealing effect, a sealing ring is installed at the connection between the sealing cover and the needle, which greatly reduces the contact between the needle, the internal liquid medicine and the outside, so that the syringe and the internal liquid medicine can be stored for a long time.

[0004] However, in actual use, some patients will place the syringe at home for the convenience of receiving treatment. Once affected by extreme weather, high temperature will cause the material to soften or expand, and low temperature will cause the material to harden or shrink, which will reduce the tightness between the sealing ring and the needle, affecting the sealing effect, and thus affecting the service life of the syringe and the internal liquid medicine. Content of the Utility Model

[0005] The purpose of the utility model is to provide a sealing structure for a plastic medical PE bottle syringe to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A sealing structure for a plastic medical PE bottle syringe, including a tube body, a mounting block is fixedly connected to the left end of the tube body, two sealing grooves are opened on both the inner and outer sides of the mounting block, a sealing cover is sleeved outside the mounting block, two sealing rings are fixedly connected to the inner wall of the sealing cover, the sealing rings are adapted to the sealing grooves, the adjacent sides of the inner and outer sealing rings are respectively attached to the inside of the inner and outer sliding grooves, and an anti-slip pattern is opened on the side of the sealing ring away from the sealing cover.

[0007] Preferably, a sliding groove is opened inside the sealing ring, a plurality of push plates are slidably connected inside the sliding groove, and a first push block is fixedly connected to the opposite sides of the inner and outer push plates.

[0008] Preferably, a plurality of limiting grooves are formed in the inner side of the right side of the sealing cover. An installation groove is formed in the right side of the limiting groove. A connecting rod is slidably connected in the limiting groove. A second pushing block is fixedly connected to the inner side of the connecting rod. A pull rod is fixedly connected to the right side of the second pushing block. A pulling block is fixedly connected to the right side of the pull rod. An elastic member is fixedly connected to the right side of the pulling block.

[0009] Preferably, the right side of the sealing cover is attached to the left side of the pipe body.

[0010] Preferably, the outer side of the first pushing block is slidably connected inside the sliding groove. The side of the first pushing block away from the push plate is designed to be inclined.

[0011] Preferably, the right side of the connecting rod is attached to the left side of the pipe body. The second pushing block is slidably connected inside the limiting groove. The side of the second pushing block away from the connecting rod is designed to be inclined.

[0012] Preferably, the pull rod is slidably connected inside the limiting groove. The pulling block is slidably connected inside the installation groove. The other end of the elastic member is fixedly connected to the inner wall of the installation groove.

[0013] Compared with the prior art, the beneficial effects of a plastic medical PE bottle syringe sealing structure proposed by the present utility model are as follows: By installing an installation block outside the needle head, a sealing groove is formed on the outer side of the installation block, and the connection between the sealing cover and the installation block is designed to be hollow. After connecting the sealing cover and the installation block, multi-stage sealing of the needle head can be achieved, thereby greatly reducing the influence of extreme weather on the sealing ring, improving the sealing effect, and enabling the syringe and the liquid medicine inside to be stored for a longer time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional view of the present utility model;

[0015] Figure 2 is a top view of the present utility model;

[0016] Figure 3 is the present utility model Figure 2 structural sectional view at A-A in;

[0017] Figure 4 is the present utility model Figure 3 structural enlarged view at A in;

[0018] Figure 5 is the present utility model Figure 3 structural enlarged view at B in;

[0019] Figure 6 is a schematic structural diagram of the installation block of the present utility model.

[0020] In the figure: 1, tube body; 2, mounting block; 3, sealing cover; 4, sealing groove; 5, sealing ring; 6, anti-slip pattern; 7, sliding groove; 8, push plate; 9, first push block; 10, limiting groove; 11, connecting rod; 12, second push block; 13, pull rod; 14, pulling block; 15, elastic member; 16, mounting groove. Specific implementation manner

[0021] In order to clearly and completely describe the purpose, technical solution of the present utility model and make the advantages more clear, the following further details the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present utility model, rather than all the embodiments, and are only used to explain the embodiments of the present utility model, not to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present utility model.

[0022] Embodiment 1: Please refer to Figures 1-6 , the present utility model provides a technical solution: a sealing structure for a plastic medical PE bottle syringe, including a tube body 1. The left end of the tube body 1 is fixedly connected with a mounting block 2. Two sealing grooves 4 are opened on both the inner and outer sides of the mounting block 2. A sealing cover 3 is sleeved outside the mounting block 2. The sealing cover 3 is used to protect the needle, so that the needle will not be in direct contact with the external air for a long time when not in use. The right side of the sealing cover 3 is attached to the left side of the tube body 1, so that the needle can be initially sealed. Two sealing rings 5 are fixedly connected to the inner wall of the sealing cover 3. The sealing rings 5 are adapted to the sealing grooves 4. The adjacent sides of the inner and outer sealing rings 5 are respectively attached to the inside of the inner and outer sliding grooves 7. By utilizing the deformation of the sealing rings 5, the sealing rings 5 can be filled in the sealing grooves 4, and then the needle can be secondarily sealed. The side of the sealing ring 5 away from the sealing cover 3 is provided with anti-slip patterns 6. The anti-slip patterns 6 are used to prevent the sealing rings 5 from sliding abnormally inside the sealing grooves 4, so that the sealing effect will not be reduced.

[0023] When the needle needs to be sealed, the sealing cover 3 is sleeved on the mounting block 2, and the right end of the sealing cover 3 is attached to the left side of the tube body 1, so as to perform a primary seal on the needle. During this process, the sealing rings 5 can slide outside the mounting block 2 and are deformed by being squeezed by the mounting block 2. After the sealing cover 3 is attached to the tube body 1, the sealing rings 5 perform a reset movement, and then the sealing rings 5 can be filled in the sealing grooves 4, so that the sealing rings 5 can secondarily seal the needle, thereby greatly reducing the influence of extreme weather on the sealing ring, improving the sealing effect, and enabling the syringe and the liquid medicine inside to be stored for a longer time.

[0024] Embodiment 2: On the basis of Embodiment 1, in order to improve the sealing effect of the sealing ring 5, a chute 7 is provided inside the sealing ring 5. A plurality of push plates 8 are slidably connected inside the chute 7. The chute 7 limits the push plates 8, enabling the push plates 8 to slide smoothly. On the separated sides of the inner and outer push plates 8, a first push block 9 is fixedly connected. The first push block 9 is used to push the push plates 8 to move. The outside of the first push block 9 is slidably connected inside the chute 7. The chute 7 limits the first push block 9, preventing the first push block 9 from shifting during movement. The side of the first push block 9 away from the push plate 8 is designed to be inclined, so that the first push block 9 can be pushed.

[0025] After the sealing ring 5 is fitted with the sealing groove 4, by moving the first push block 9 in the direction close to the push plate 8, the push plate 8 can be pushed to extrude the sealing ring 5 to deform, so that the sealing ring 5 can be closely fitted with the sealing groove 4. On the contrary, by pulling the first push block 9 in the direction away from the push plate 8, the push plate 8 can be separated from the inner wall of the chute 7, and then the connection between the sealing ring 5 and the sealing groove 4 can be loosened, so that the sealing cover 3 can be removed from the mounting block 2.

[0026] Embodiment 3: On the basis of Embodiment 2, in order to automatically push the first push block 9, a plurality of limiting grooves 10 are provided inside the right side of the sealing cover 3. An installation groove 16 is provided on the right side of the limiting groove 10. A connecting rod 11 is slidably connected inside the limiting groove 10. The limiting groove 10 limits the connecting rod 11, enabling the connecting rod 11 to slide smoothly. The right side of the connecting rod 11 is in contact with the left side of the pipe body 1, so that the connecting rod 11 can move leftward under the reaction force. A second push block 12 is fixedly connected to the inner side of the connecting rod 11. The second push block 12 is slidably connected inside the limiting groove 10. The limiting groove 10 limits the second push block 12, preventing the second push block 12 from shifting during movement. The side of the second push block 12 away from the connecting rod 11 is designed to be inclined. The inclined surface of the second push block 12 is designed to be opposite to that of the first push block 9. When the inclined surface of the second push block 12 comes into contact with the inclined surface of the first push block 9, the second push block 12 can push the first push block 9 to slide. A pull rod 13 is fixedly connected to the right side of the second push block 12. The pull rod 13 is slidably connected inside the limiting groove 10. The limiting groove 10 limits the pull rod 13, preventing the pull rod 13 from shifting during movement. A pull block 14 is fixedly connected to the right side of the pull rod 13. The pull block 14 is slidably connected inside the installation groove 16. The installation groove 16 limits the pull block 14, enabling the pull block 14 to slide smoothly. A resilient member 15 is fixedly connected to the right side of the pull block 14. The other end of the resilient member 15 is fixedly connected to the inner wall of the installation groove 16.

[0027] When the sealing cover 3 is fitted to the tube body 1, the connecting rod 11 can be fitted to the left side of the tube body 1, so that the connecting rod 11 can receive a reverse force, causing the connecting rod 11 to move leftward, and then enabling the connecting rod 11 to drive the second push block 12 to move leftward, so that the inclined surface of the second push block 12 can slide on the inclined surface of the first push block 9, and then enabling the first push block 9 to move away from the connecting rod 11. At the same time, the second push block 12 can pull the pull rod 13 to move leftward, so that the pull rod 13 can pull the elastic member 15 to deform through the pulling block 14. Conversely, when the connecting rod 11 is detached from the tube body 1, the elastic member 15 can perform a reset movement, so that the elastic member 15 can pull the pull rod 13 to move rightward through the pulling block 14, causing the pull rod 13 to pull the second push block 12 to move rightward, and then the first push block 9 is no longer subjected to extrusion and restriction. In actual use, by sleeving the sealing cover 3 on the mounting block 2 and fitting the right end of the sealing cover 3 to the left side of the tube body 1, the needle can be sealed once. During this process, the sealing ring 5 can slide outside the mounting block 2 and thus be deformed by the extrusion of the mounting block 2. After the sealing cover 3 is fitted to the tube body 1, the sealing ring 5 can perform a reset movement, so that the sealing ring 5 can fill the inside of the sealing groove 4, enabling the sealing ring 5 to perform secondary sealing on the needle. At the same time, the connecting rod 11 can be fitted to the left side of the tube body 1, so that the connecting rod 11 can receive a reverse force, causing the connecting rod 11 to move leftward, and then enabling the connecting rod 11 to drive the second push block 12 to move leftward, so that the inclined surface of the second push block 12 can slide on the inclined surface of the first push block 9, and then enabling the first push block 9 to move toward the push plate 8, so that the push plate 8 can push the push plate 8 to extrude the sealing ring 5 to deform, making the sealing ring 5 closely fit the sealing groove 4, thereby improving the secondary sealing effect of the sealing ring 5 on the sealing groove 4, greatly reducing the impact of extreme weather on the sealing ring, improving the sealing effect, enabling the syringe and the liquid medicine inside to be stored for a longer time. At the same time, the second push block 12 can pull the pull rod 13 to move leftward, so that the pull rod 13 can pull the elastic member 15 to deform through the pulling block 14. Conversely, when the sealing cover 3 needs to be disassembled, by pulling the sealing cover 3 leftward and causing the connecting rod 11 to be detached from the tube body 1, at this time the elastic member 15 can perform a reset movement, so that the elastic member 15 can pull the pull rod 13 to move rightward through the pulling block 14, causing the pull rod 13 to pull the second push block 12 to move rightward, and then the first push block 9 is no longer subjected to extrusion and restriction, so that the push plate 8 no longer extrudes the sealing ring 5, making the sealing ring 5 and the sealing groove 4 loose, and then enabling the sealing cover 3 to drive the sealing ring 5 to disengage from the inside of the sealing groove 4, facilitating the disassembly of the sealing cover 3.

[0028] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A sealing structure for a plastic medical PE bottle syringe, comprising a tube body (1), characterized in that: The left end of the tube body (1) is fixedly connected to a mounting block (2), and two sealing grooves (4) are provided on both inner and outer sides of the mounting block (2). A sealing cover (3) is sleeved on the outside of the mounting block (2), and two sealing rings (5) are fixedly connected to the inner wall of the sealing cover (3). The sealing rings (5) are matched with the sealing grooves (4), and the adjacent sides of the sealing rings (5) on the inner and outer sides are respectively fitted with the inside of the inner and outer sliding grooves (7), and the side of the sealing ring (5) away from the sealing cover (3) is provided with anti-slip grooves (6).

2. A sealing structure for a plastic medical PE bottle syringe according to claim 1, characterized in that: A slide groove (7) is provided inside the sealing ring (5), and a plurality of push plates (8) are slidably connected inside the slide groove (7), and push blocks (9) are fixedly connected to the separated sides of the push plates (8) on both inner and outer sides.

3. A sealing structure for a plastic medical PE bottle syringe according to claim 2, characterized in that: A plurality of limiting grooves (10) are provided inside the right side of the sealing cover (3), a mounting groove (16) is provided on the right side of the limiting groove (10), a connecting rod (11) is slidably connected inside the limiting groove (10), a push block 2 (12) is fixedly connected to the inner side of the connecting rod (11), a pull rod (13) is fixedly connected to the right side of the push block 2 (12), a pull rod (13) is fixedly connected to the right side of the pull rod (13), and an elastic member (15) is fixedly connected to the right side of the pull block (14).

4. A sealing structure for a plastic medical PE bottle syringe according to claim 1, characterized in that: The right side of the sealing cover (3) fits with the left side of the tube body (1).

5. A sealing structure for a plastic medical PE bottle syringe according to claim 2, characterized in that: The outside of the push block 1 (9) is slidably connected to the inside of the slide groove (7), and the side of the push block 1 (9) away from the push plate (8) is designed to be oblique.

6. A sealing structure for a plastic medical PE bottle syringe according to claim 3, characterized in that: The right side of the connecting rod (11) fits with the left side of the tube body (1), the push block 2 (12) is slidably connected inside the limiting groove (10), and the side of the push block 2 (12) away from the connecting rod (11) is of an oblique design.

7. A sealing structure for a plastic medical PE bottle syringe according to claim 3, characterized in that: The pull rod (13) is slidably connected to the inside of the limiting groove (10), the pull block (14) is slidably connected to the inside of the installation groove (16), and the other end of the elastic member (15) is fixedly connected to the inner wall of the installation groove (16).

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