Rubber plug with low sliding performance

Abstract

The utility model provides a rubber plug with low sliding performance, which relates to the technical field of syringe rubber plugs, and comprises a rubber plug body arranged in a needle cylinder, a push rod is arranged in the rubber plug, the push rod is arranged in the needle cylinder, the outer surface of one end of the rubber plug body is fixedly connected with a first auxiliary ring, and the outer surface of the other end of the rubber plug body is fixedly connected with a second auxiliary ring. The first auxiliary ring is arranged, one end of the first auxiliary ring is large and abuts against the inner wall of the needle cylinder all the time, when the rubber plug body is pushed to slide on the inner wall of the needle cylinder, the first auxiliary ring deforms in the direction and is bent in the direction opposite to the direction where the piston is pushed, friction force between the rubber plug body and the needle cylinder can be increased, and therefore the needle cylinder can be prevented from sliding. Meanwhile, when pushing of the push rod is stopped, the rubber plug is not easy to push, so that the sliding performance of the rubber plug body is reduced, the rubber plug body is fixed conveniently, the problem that the liquid medicine flows too fast can be solved to a certain extent, and the medical liquid medicine can be used by special patients conveniently.

Description

Technical Field

[0001] This utility model relates to the field of syringe stopper technology, and in particular to a rubber stopper with low sliding performance. Background Technology

[0002] Syringe stoppers are a key component of syringes. They are usually made of rubber or similar materials and are used to push or draw liquid medication inside the syringe barrel. The outer surface of the stopper fits tightly against the inner wall of the syringe barrel to ensure that there is no leakage when pushing or drawing medication.

[0003] While the piston of a syringe in some medical devices typically requires high sliding performance to ensure smooth delivery of the medication, in certain situations, due to considerations such as the poor physical condition and tolerance of some patients, or the injection requirements of special medications, it is necessary to control the injection speed or use an intermittent injection method. In these cases, a high sliding rubber stopper may be difficult to fix and the medication may flow out too quickly, making it inconvenient to use for special patients. Utility Model Content

[0004] This invention addresses the problem that when medication needs to be injected at a relatively slow speed or in an intermittent manner, highly slippery rubber stoppers are difficult to fix and the medication may flow out too quickly, making them inconvenient for use on special patients. Therefore, this invention proposes a low-slippery rubber stopper.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a low-slip performance rubber stopper, comprising a stopper body disposed in a syringe, a push rod disposed inside the stopper body, the push rod being disposed inside the syringe, a first auxiliary ring being fixedly connected to the outer surface of one end of the stopper body, the first auxiliary ring having a triangular cross-section, a second auxiliary ring being fixedly connected to the outer surface of the other end of the stopper body, the second auxiliary ring having a rectangular cross-section, a slot being provided on one side of the stopper body, one end of the push rod being inserted into the inner wall of the slot, and an auxiliary device being disposed on the outer surface of the stopper.

[0006] The effects achieved by the above components are as follows: By setting a first auxiliary ring and a second auxiliary ring, one end of the first auxiliary ring is larger and always abuts against the inner wall of the syringe. When the rubber stopper body slides against the inner wall of the syringe, the first auxiliary ring deforms and bends in the opposite direction to the piston, which increases the friction between the rubber stopper body and the syringe. At the same time, when the push rod is stopped, the rubber stopper is not easily pushed, which helps to reduce the slippage of the rubber stopper body. This makes it easier to fix the rubber stopper body and reduces the problem of excessively fast drug flow to a certain extent, making it easier to use for special patients. The first auxiliary ring is relatively thin, and the second auxiliary ring can provide an auxiliary seal between the rubber stopper body and the inner wall of the syringe to prevent the drug from overflowing.

[0007] Preferably, an auxiliary groove is provided at the top of the inner wall of the card slot, and the vertical cross-section of the auxiliary groove is triangular.

[0008] The effect achieved by the above components is as follows: by setting an auxiliary groove, one side of the auxiliary groove is larger, which facilitates the insertion of one end of the insertion rod, while the other end of the auxiliary groove is smaller, which facilitates the fixing of the push rod with the slot.

[0009] Preferably, four protrusions are evenly fixedly connected to one side of the rubber stopper body.

[0010] The effect achieved by the above-mentioned components is that by setting four protrusions, the rubber stopper body and one end of the syringe can be blocked, which helps to prevent the rubber stopper body from completely abutting against one end of the inner wall of the syringe, causing the rubber stopper body and one end of the inner wall of the syringe body to attract each other, making it difficult to pull the push rod and the rubber stopper body.

[0011] Preferably, the auxiliary device includes a ring, the inner wall of which is fixedly connected to the outer surface of the rubber stopper body.

[0012] The effect achieved by the above-mentioned components is as follows: by setting the ring, the ring can strengthen and fix the thinner part of the rubber stopper body, which helps to reduce the problem that when the push rod is pulled, the push rod pulls the groove, causing the rubber stopper body to deform greatly, and thus causing the push rod to detach from the rubber stopper body.

[0013] Preferably, a reinforcing ring is fixedly connected to the inner wall of the auxiliary groove.

[0014] The effect achieved by the above components is that by setting a reinforcing ring, the reinforcing ring can block and strengthen the inner wall of the slot, which can further prevent the push rod from falling out of the slot.

[0015] Preferably, one end of the push rod is fixedly connected to a cross-shaped block, the inner wall of the rubber stopper is provided with a cross-shaped groove, the inner wall of the cross-shaped groove is connected to the inner wall of the slot, and the outer surface of the cross-shaped block is inserted into the inner wall of the cross-shaped groove.

[0016] The effect achieved by the above components is that by setting the cross-shaped block and cross-shaped groove, the rubber stopper body and the push rod can be limited, which helps to prevent the rubber stopper body and the push rod from easily rotating, and facilitates the normal use of the syringe body.

[0017] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0018] In this invention, by setting a first auxiliary ring, one end of which is larger and always abuts against the inner wall of the syringe, when the rubber stopper body slides against the inner wall of the syringe, the first auxiliary ring deforms and bends in the opposite direction to the piston, which increases the friction between the rubber stopper body and the syringe. At the same time, when the push rod is stopped, the rubber stopper is not easily pushed, which helps to reduce the slippage of the rubber stopper body. This makes it easier to fix the rubber stopper body and reduces the problem of excessively fast drug flow, making it easier to use for special patients. Attached Figure Description

[0019] Figure 1 This is a cross-sectional structural diagram of the main body of this utility model;

[0020] Figure 2 This is a schematic cross-sectional view of the main body of this utility model;

[0021] Figure 3 This is a three-dimensional structural diagram of the rubber stopper body of this utility model;

[0022] Figure 4 This is a cross-sectional view of the card slot of this utility model.

[0023] Legend: 1. Rubber stopper body; 2. Syringe; 3. Push rod; 4. First auxiliary ring; 5. Second auxiliary ring; 6. Slot; 7. Auxiliary device; 71. Circular ring; 72. Reinforcing ring; 73. Cross-shaped block; 74. Cross-shaped groove; 8. Auxiliary groove; 9. Protrusion. Detailed Implementation

[0024] Example 1, referring to Figures 1-4As shown, this embodiment discloses a low-slip performance rubber stopper, including a rubber stopper body 1 disposed in a syringe 2. The stopper is characterized by: a push rod 3 disposed inside the syringe 2; a first auxiliary ring 4 fixedly connected to the outer surface of one end of the rubber stopper body 1, the first auxiliary ring 4 having a triangular cross-section; a second auxiliary ring 5 fixedly connected to the outer surface of the other end of the rubber stopper body 1, the second auxiliary ring 5 having a rectangular cross-section; a slot 6 formed on one side of the rubber stopper body 1; one end of the push rod 3 inserted into the inner wall of the slot 6; and an auxiliary device 7 disposed on the outer surface of the rubber stopper. By setting the first auxiliary ring 4 and the second auxiliary ring 5, one end of the first auxiliary ring 4 is larger and always... The inner wall of the syringe 2 abuts against the piston. When the rubber stopper body 1 slides against the inner wall of the syringe 2, the first auxiliary ring 4 deforms and bends in the opposite direction to the piston, which increases the friction between the rubber stopper body 1 and the syringe 2. At the same time, when the push rod 3 is stopped, the rubber stopper is not easily pushed, which helps to reduce the slippage of the rubber stopper body 1. This makes it easier to fix the rubber stopper body 1 and reduces the problem of excessively fast drug flow, making it easier to use for special patients. The first auxiliary ring 4 is relatively thin, and the second auxiliary ring 5 can provide auxiliary sealing between the rubber stopper body 1 and the inner wall of the syringe 2 to prevent the drug from overflowing.

[0025] Reference Figures 2-4 As shown, an auxiliary groove 8 is provided at the top of the inner wall of the slot 6. The vertical cross-section of the auxiliary groove 8 is triangular. By setting the auxiliary groove 8, one side of the auxiliary groove 8 is larger, which facilitates the insertion of one end of the rod, while the other end of the auxiliary groove 8 is smaller, which facilitates the fixing of the push rod 3 with the slot 6.

[0026] Reference Figures 2-4 As shown, four protrusions 9 are evenly fixedly connected to one side of the rubber stopper body 1. By setting the four protrusions 9, the rubber stopper body 1 and one end of the syringe 2 can be blocked, which helps to prevent the rubber stopper body 1 from completely abutting against one end of the inner wall of the syringe 2, causing the rubber stopper body 1 and one end of the inner wall of the syringe 2 to attract each other, making it difficult to pull the push rod 3 and the rubber stopper body 1.

[0027] Reference Figures 2-4 As shown, the auxiliary device 7 includes a ring 71. The inner wall of the ring 71 is fixedly connected to the outer surface of the rubber stopper body 1. By setting the ring 71, the ring 71 can strengthen and fix the thinner part of the rubber stopper body 1, which helps to reduce the problem that when the push rod 3 is pulled, the push rod 3 pulls the slot 6, causing the rubber stopper body 1 to undergo large deformation, and thus causing the push rod 3 to detach from the rubber stopper body 1. The inner wall of the auxiliary groove 8 is fixedly connected to a reinforcing ring 72. By setting the reinforcing ring 72, the reinforcing ring 72 can block and strengthen the inner wall of the slot 6, and can further prevent the push rod 3 from detaching from the slot 6.

[0028] Reference Figures 2-4 As shown, a cross-shaped block 73 is fixedly connected to one end of the push rod 3. A cross-shaped groove 74 is provided on the inner wall of the rubber stopper. The inner wall of the cross-shaped groove 74 is connected to the inner wall of the slot 6. The outer surface of the cross-shaped block 73 is inserted into the inner wall of the cross-shaped groove 74. By setting the cross-shaped block 73 and the cross-shaped groove 74, the rubber stopper body 1 and the push rod 3 can be limited, which helps to prevent the rubber stopper body 1 and the push rod 3 from easily rotating, and facilitates the normal use of the syringe body.

[0029] Working principle: The first auxiliary ring 4, located at one end of the rubber stopper body 1, has a triangular cross-section. One end is larger and always abuts against the inner wall of the syringe 2. When the rubber stopper body 1 slides against the inner wall of the syringe 2, the first auxiliary ring 4 deforms and bends in the opposite direction to the piston, increasing the friction between the rubber stopper body 1 and the syringe 2. Simultaneously, when the push rod 3 is stopped, the rubber stopper is less easily pushed, thus reducing the slippage of the rubber stopper body 1. This facilitates fixing the rubber stopper body 1 and reduces the problem of excessively rapid drug flow, making it suitable for use on special patients. The first auxiliary ring 4 is relatively thin, and the second auxiliary ring 5 provides an auxiliary seal between the rubber stopper body 1 and the inner wall of the syringe 2, preventing drug leakage. The auxiliary groove... One side of the plunger 8 is larger, making it easier to insert one end of the plunger, while the other end is smaller, making it easier to fix the plunger 3 in place with the slot 6. The four protrusions 9 can block one end of the rubber stopper body 1 and the syringe 2, which helps to prevent the rubber stopper body 1 from completely abutting against one end of the inner wall of the syringe 2, causing the rubber stopper body 1 and the inner wall of the syringe 2 to attract each other and making it difficult to pull the plunger 3 and the rubber stopper body 1. The ring 71 and the reinforcing ring 72 can strengthen the inner wall of the outer surface of the rubber stopper body 1, which can reduce the deformation of the rubber stopper body 1 and thus prevent the plunger 3 from falling out of the slot 6. At the same time, the cross-shaped block 73 and the cross-shaped groove 74 can limit the movement between the rubber stopper body 1 and the plunger 3, which helps to prevent the rubber stopper body 1 and the plunger 3 from easily rotating and facilitates the normal use of the syringe body.

Claims

1. A low-slip rubber stopper, comprising a stopper body (1) disposed in a syringe (2), characterized in that: The stopper body (1) is provided with a push rod (3) inside, the push rod (3) is provided inside the syringe (2), a first auxiliary ring (4) is fixedly connected to the outer surface of one end of the stopper body (1), the cross-section of the first auxiliary ring (4) is triangular, a second auxiliary ring (5) is fixedly connected to the outer surface of the other end of the stopper body (1), the cross-section of the second auxiliary ring (5) is rectangular, a slot (6) is provided on one side of the stopper body (1), one end of the push rod (3) is inserted into the inner wall of the slot (6), and an auxiliary device (7) is provided on the outer surface of the stopper body (1).

2. The low-slip performance rubber stopper according to claim 1, characterized in that: An auxiliary groove (8) is provided at the top of the inner wall of the slot (6), and the vertical cross section of the auxiliary groove (8) is triangular.

3. The low-slip performance rubber stopper according to claim 1, characterized in that: Four protrusions (9) are evenly fixedly connected to one side of the rubber stopper body (1).

4. The low-slip performance rubber stopper according to claim 1, characterized in that: The auxiliary device (7) includes a ring (71), the inner wall of which is fixedly connected to the outer surface of the rubber stopper body (1).

5. The low-slip performance rubber stopper according to claim 2, characterized in that: The inner wall of the auxiliary groove (8) is fixedly connected with a reinforcing ring (72).

6. The low-slip performance rubber stopper according to claim 1, characterized in that: One end of the push rod (3) is fixedly connected to a cross-shaped block (73), and the inner wall of the rubber plug is provided with a cross-shaped groove (74). The inner wall of the cross-shaped groove (74) is connected to the inner wall of the slot (6), and the outer surface of the cross-shaped block (73) is inserted into the inner wall of the cross-shaped groove (74).

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