Polypropylene combined cover for infusion

Abstract

The polypropylene combined cover comprises a polypropylene container, an opening is formed in the center of the top end of the polypropylene container, a polypropylene inner ring is arranged in an inner cavity of the opening of the polypropylene container, a polypropylene outer cover is connected to the outer wall of the opening of the polypropylene container in a sleeved mode, and a medical rubber layer is arranged in an inner cavity of the polypropylene inner cover. A polypropylene outer ring is arranged on the outer wall of the polypropylene inner cover, and the center of the polypropylene outer ring is buckled with the center of the polypropylene inner ring. The outer cover and the outer portion of the polypropylene bottle opening are buckled, three layers of polypropylene rings are arranged, penetrating buckling is achieved through extrusion, extremely high sealing performance can be provided, the pop-top can type opening is formed in the top of the combined cover body and can be easily opened in the using process, and the good sealing performance can prevent substances in a polypropylene container from being affected by environmental factors. And the advantages of firm sealing and convenience in opening during use are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of polypropylene containers, and specifically relates to a polypropylene combined cap for infusion. Background Art

[0002] The polypropylene liquid container for infusion is usually a colorless and transparent container, which is used to hold the solution for injection drugs. This kind of container is usually made of polypropylene plastic (PP material) because it has excellent chemical stability, heat resistance and cold resistance, and is harmless to the human body. The polypropylene liquid container for infusion is a safe, reliable and harmless container, which can ensure the safety and stability of infusion.

[0003] When using the polypropylene liquid container, the sealing effect is very important. If the container is not sealed well, the liquid leakage will affect the stability and safety of infusion. If the liquid leaks in the container, it will cause the quality of the injection drug to decline, and may even cause infection or other health problems. In addition, over-sealing the polypropylene liquid container will cause great trouble when opening. This situation will lead to a waste of time and energy for patients and medical staff. Secondly, over-sealing will increase the risk of damage to the container when opening.

[0004] Therefore, we propose a polypropylene combined cap for infusion to ensure good sealing effect and convenience when opening. Content of the Utility Model

[0005] The purpose of the utility model is to provide a polypropylene combined cap for infusion to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a polypropylene combined cap for infusion, including a polypropylene container, an opening is provided at the center of the top end of the polypropylene container, a polypropylene inner ring is arranged in the inner cavity of the opening of the polypropylene container, a polypropylene outer cover is sleeved on the outer wall of the opening of the polypropylene container, a polypropylene pull tab is arranged at the center of the upper surface of the polypropylene outer cover, a preformed indentation is arranged at the connection between the polypropylene pull tab and the polypropylene outer cover, a polypropylene inner cover is fixedly connected to the lower surface of the inner cavity of the polypropylene outer cover, a medical rubber layer is arranged in the inner cavity of the polypropylene inner cover, a polypropylene outer ring is arranged on the outer wall of the polypropylene inner cover, and the center of the polypropylene outer ring is buckled with the center of the polypropylene inner ring.

[0007] Preferably, an outer wall of an opening of the polypropylene container is fixedly connected with a polypropylene annular block, an outer wall of the polypropylene annular block is attached to an inner wall of the polypropylene outer cover, a medical rubber ring is arranged on an upper surface of the polypropylene annular block, an inner ring wall of the medical rubber ring is sleeved on the outer wall of the opening of the polypropylene container, an upper surface of the medical rubber ring is attached to an inner cavity of the polypropylene outer cover, a fastening iron ring is sleeved on an outer wall of the polypropylene outer cover, and the polypropylene outer cover and the fastening iron ring are in interference connection.

[0008] Preferably, a pull ring is fixedly connected to an upper surface of the polypropylene pull opening.

[0009] Preferably, the number of the polypropylene outer rings is three, and they are arranged vertically in sequence. The number of the polypropylene inner rings is also three, and they are also arranged vertically in sequence.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows: When the polypropylene container is sealed, a combined cover body is arranged at the bottle mouth. The outer cover is buckled with the outside of the polypropylene bottle mouth, an inner cover is arranged at the center of the outer cover, and the inner cover is buckled with the inner cavity of the polypropylene bottle mouth. Three layers of polypropylene rings are provided, and through extrusion, through buckling is achieved, which can provide extremely high sealing performance. This enables the container to effectively prevent the internal substances from being polluted and damaged by the external environment during storage. An easy-open can type opening is arranged at the top of the combined cover body, which can be easily opened during use without special tools, greatly improving the convenience of use. Especially in emergency situations or environments lacking tools, due to the use of the combined cover body, the good sealing performance can prevent the internal substances of the polypropylene container from being affected by environmental factors, achieving the benefits of firm sealing and convenient opening during use. Description of the Drawings

[0011] Figure 1 is a structural schematic diagram of the present utility model;

[0012] Figure 2 is Figure 1 a structural detail diagram at A in

[0013] Figure 3 is Figure 1 a three-dimensional cross-sectional view of the polypropylene inner ring in

[0014] Figure 4 is Figure 1 a three-dimensional schematic diagram of the polypropylene outer ring in

[0015] In the figure: 1. Polypropylene container; 2. Polypropylene inner ring; 3. Polypropylene outer cover; 4. Polypropylene outer ring; 5. Polypropylene inner cover; 6. Medical rubber layer; 7. Polypropylene pull opening; 8. Polypropylene annular block; 9. Medical rubber ring; 10. Fastening iron ring; 11. Pull ring. Detailed Embodiment

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0017] Please refer to Figures 1-4 , the present utility model provides a polypropylene combination cap for infusion, including a polypropylene container 1. An opening is provided at the center of the top end of the polypropylene container 1. A polypropylene inner ring 2 is arranged in the inner cavity of the opening of the polypropylene container 1. A polypropylene outer cap 3 is sleeved on the outer wall of the opening of the polypropylene container 1. A polypropylene pull tab 7 is arranged at the center of the upper surface of the polypropylene outer cap 3. A prefabricated indentation is arranged at the connection between the polypropylene pull tab 7 and the polypropylene outer cap 3. A polypropylene inner cap 5 is fixedly connected to the lower surface of the inner cavity of the polypropylene outer cap 3. A medical rubber layer 6 is arranged in the inner cavity of the polypropylene inner cap 5. A polypropylene outer ring 4 is arranged on the outer wall of the polypropylene inner cap 5. The center of the polypropylene outer ring 4 is buckled with the center of the polypropylene inner ring 2.

[0018] A polypropylene annular block 8 is fixedly connected to the outer wall of the opening of the polypropylene container 1. The outer wall of the polypropylene annular block 8 is attached to the inner wall of the polypropylene outer cap 3. A medical rubber ring 9 is arranged on the upper surface of the polypropylene annular block 8. The inner ring wall of the medical rubber ring 9 is sleeved on the outer wall of the opening of the polypropylene container 1. The upper surface of the medical rubber ring 9 is attached to the inner cavity of the polypropylene outer cap 3. A fastening iron ring 10 is sleeved on the outer wall of the polypropylene outer cap 3. The polypropylene outer cap 3 and the fastening iron ring 10 are in interference connection.

[0019] A pull ring 11 is fixedly connected to the upper surface of the polypropylene pull tab 7.

[0020] The number of the polypropylene outer rings 4 is three, and they are arranged vertically in sequence. The number of the polypropylene inner rings 2 is also three, and they are also arranged vertically in sequence.

[0021] Working principle: When the polypropylene container 1 is sealed, a polypropylene inner ring 2 is arranged in the inner cavity of the opening of the polypropylene container 1. Three polypropylenes 2 are arranged vertically. A polypropylene inner cover 4 is arranged in the inner cavity of the polypropylene outer cover 3. The outer wall of the polypropylene inner cover 4 is provided with a polypropylene outer ring 4 vertically. The polypropylene outer cover 3 can be buckled with the opening of the polypropylene container 1. The polypropylene outer cover 3 will fit with the polypropylene annular block 8. A medical rubber layer 6 is arranged between them. A fastening iron ring 10 is arranged outside the polypropylene outer cover 3 to seal the connection with the polypropylene annular block 8. During the buckling process, the polypropylene inner cover 5 is buckled with the inner cavity of the bottle mouth of the polypropylene container 1. At the same time, the polypropylene outer ring 4 fits with the polypropylene inner ring 2. The force applied by pressing down is used for extrusion and penetration to achieve the seal after buckling. At the same time, the three-layer setting makes it more firm after installation. When it is necessary to open the polypropylene container 1, a single finger penetrates the pull ring 11 and then pulls the pull ring 11 upward. One end of the pull ring 11 is connected to the polypropylene pull opening 7. The polypropylene pull opening 7 is connected to the polypropylene outer cover 3. A prefabricated indentation is arranged at the connection to reduce its local strength. When pulling and opening, a relatively concentrated stress is generated near the pull ring 11. Under the action of the shearing force, the polypropylene pull opening 7 is torn and opened along the indentation with the polypropylene pull opening outer cover 3. Then, a syringe penetrates the medical rubber block 9 of the polypropylene inner cover 5 to achieve the subsequent work of extracting the liquid for infusion or injection.

[0022] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A polypropylene combined cover for infusion, characterized in that: The invention comprises a polypropylene container (1), wherein an opening is arranged at the center of the top of the polypropylene container (1), a polypropylene inner ring (2) is arranged in the inner cavity of the opening of the polypropylene container (1), a polypropylene outer cover (3) is sleeved on the outer wall of the opening of the polypropylene container (1), a polypropylene pull-opening (7) is arranged at the center of the upper surface of the polypropylene outer cover (3), a prefabricated indentation is arranged at the connection between the polypropylene pull-opening (7) and the polypropylene outer cover (3), a polypropylene inner cover (5) is fixedly connected to the lower surface of the inner cavity of the polypropylene outer cover (3), a medical rubber layer (6) is arranged in the inner cavity of the polypropylene inner cover (5), a polypropylene outer ring (4) is arranged on the outer wall of the polypropylene inner cover (5), and the polypropylene outer ring (4) is buckled with the center of the polypropylene inner ring (2).

2. The polypropylene combined cap for infusion according to claim 1, characterized in that: A polypropylene annular block (8) is fixedly connected to the outer wall of the opening of the polypropylene container (1), and the outer wall of the polypropylene annular block (8) is in contact with the inner wall of the polypropylene outer cover (3). A medical rubber ring (9) is arranged on the upper surface of the polypropylene annular block (8), and the inner ring wall of the medical rubber ring (9) is sleeved with the outer wall of the opening of the polypropylene container (1), and the upper surface of the medical rubber ring (9) is in contact with the inner cavity of the polypropylene outer cover (3). A fastening iron ring (10) is sleeved on the outer wall of the polypropylene outer cover (3), and the polypropylene outer cover (3) and the fastening iron ring (10) are interference-connected.

3. The polypropylene combined cap for infusion according to claim 1, characterized in that: A pull ring (11) is fixedly connected to the upper surface of the polypropylene pull opening (7).

4. The polypropylene combined cap for infusion according to claim 1, characterized in that: The number of the polypropylene outer rings (4) is three and they are arranged vertically in sequence, and the number of the polypropylene inner rings (2) is also three and they are arranged vertically in sequence.

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