Filtering type infusion cover

Abstract

A filtering type infusion cover relates to the technical field of medicine packaging and comprises a cover body and a puncture portion arranged on the cover body, the puncture portion comprises a rubber plug fixed in the cover body, a filtering device is further arranged in the cover body below the rubber plug, the filtering device comprises a filtering net and a fixing ring annularly arranged on the periphery of the filtering net, and the fixing ring is arranged on the periphery of the filtering net. A clamping groove for the fixing ring to be clamped in is annularly formed in the inner wall face of the cover body, and a membrane for protecting the rubber plug is further arranged at the top end of the puncture part. The filtering device and the annular supporting structure are integrated in the cover body, the rubber plug made of the polyisoprene material and the filter screen made of the polytetrafluoroethylene material are adopted, scraps generated in the puncture process are effectively intercepted and prevented from entering liquid medicine, and therefore infusion safety is remarkably improved, and the safety of infusion is improved. The adverse reaction of a patient caused by debris is reduced, and meanwhile, the flexible infusion operation and the efficient production and manufacturing process are provided.

Description

Technical Field

[0001] The utility model relates to the technical field of pharmaceutical packaging, and particularly to a filtering infusion cap. Background Art

[0002] Infusion is a common treatment method in modern medicine and is widely used in clinical treatment. The traditional infusion system usually includes three main components: an outer cap, an inner cap, and a rubber stopper. Among them, the rubber stopper plays a role in fastening the infusion needle and needs to have a certain elasticity so that the steel needle can be repeatedly punctured for adding medicine. However, due to the repeated puncture of the rubber stopper by the steel needle, a lot of debris will be generated. These debris may enter the liquid medicine, and when the liquid medicine is infused into the human body, the debris may enter the human blood vessels, resulting in adverse reactions such as granuloma and inflammation. Content of the Utility Model

[0003] The purpose of the utility model is to provide a filtering infusion cap to prevent debris from entering the liquid medicine and improve the safety of infusion.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme: a filtering infusion cap, including a cap body and a puncture part arranged on the cap body. The puncture part includes a rubber stopper fixed in the cap body. A filtering device is further arranged inside the cap body below the rubber stopper. The filtering device includes a filter screen and a fixing ring annularly arranged on the outer periphery of the filter screen. A clamping groove for the fixing ring to be clamped into is annularly arranged on the inner wall surface of the cap body. A diaphragm for protecting the rubber stopper is also arranged at the top of the puncture part.

[0005] Preferably, the puncture part further includes an annular supporting part arranged inside the cap body and used for supporting the rubber stopper. A barrier layer for preventing the liquid medicine from contaminating the rubber stopper is further arranged inside the annular supporting part. The cap body, the annular supporting part, and the barrier layer are of an integrally formed structure.

[0006] More preferably, the top of the cap body buckles the rubber stopper by means of thermoplastic molding.

[0007] More preferably, the rubber stopper is made of polyisoprene material and formed by drop molding process.

[0008] More preferably, the filtering device is made of polytetrafluoroethylene material.

[0009] More preferably, the thickness of the filter screen is 0.05 - 0.20 mm.

[0010] More preferably, the diaphragm is an aluminum foil or a non-PVC film.

[0011] More preferably, the number of the puncture parts is two.

[0012] Compared with the prior art, the utility model effectively intercepts the debris generated by puncture by arranging a filtering device below the rubber stopper, preventing the debris from entering the liquid medicine, thereby reducing the adverse reactions such as granuloma and inflammation that may occur during the infusion process, and significantly improving the safety of infusion. At the same time, the fixing ring of the filtering device cooperates with the clamping groove on the inner wall surface of the cap body to form a stable structure, making the filtering device not easy to shift or fall off during puncture and infusion, enhancing the durability and reliability of the entire infusion cap. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic cross-sectional view of the overall structure in Embodiment 1;

[0014] Figure 2 is a schematic view of the overall structure in Embodiment 1;

[0015] Figure 3 is a schematic view of the overall structure in Embodiment 2.

[0016] In the figure:

[0017] 1 - cap body 2 - rubber stopper 3 - diaphragm

[0018] 4 - filter net 5 - fixing ring 6 - clamping groove

[0019] 7 - annular support part 8 - blocking layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] For the convenience of those skilled in the art to understand, the present utility model will be further described below in conjunction with the embodiments and the drawings. The content mentioned in the embodiments does not limit the present utility model.

[0021] It should be noted in advance that in the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. In addition, in the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but are in contact through other features between them. Embodiment

[0022] As Figure 1 and Figure 2As shown in the figure, a filtering infusion cap includes a cap body 1 and a puncture part provided on the cap body 1. The puncture part includes a rubber stopper 2 fixed inside the cap body 1. A filtering device is further provided inside the cap body 1 below the rubber stopper 2. The filtering device includes a filter net 4 and a fixing ring 5 annularly arranged on the outer periphery of the filter net 4. A clamping groove 6 for the fixing ring 5 to be snapped into is annularly arranged on the inner wall surface of the cap body 1. A diaphragm 3 for protecting the rubber stopper 2 is further provided at the top of the puncture part. The diaphragm 3 can be connected to the top of the cap body 1 by bonding.

[0023] In the above structure, the puncture part further includes an annular support part 7 provided inside the cap body 1 and used for supporting the rubber stopper 2. A barrier layer 8 for preventing the liquid medicine from contaminating the rubber stopper 2 is further provided inside the annular support part 7. In addition, the cap body 1, the annular support part 7 and the barrier layer 8 are of an integrally formed structure, realizing the simplification of the structure and the high efficiency of production, reducing the number of components and assembly steps, reducing the production cost and the possibility of assembly errors, and at the same time enhancing the overall stability and reliability.

[0024] In order to improve the stability of the installation and fixation of the rubber stopper 2, the top of the cap body 1 buckles the rubber stopper 2 by thermoplastic molding. The risk of displacement or falling off of the rubber stopper 2 during use can be reduced. Thermoplastic molding is a cost-effective and reliable fixing method, which can provide a uniform pressure distribution, ensure a tight fit between the rubber stopper and the cap body, and thus improve the sealing performance of the infusion cap.

[0025] The rubber stopper 2 in this embodiment is made of polyisoprene material and formed by drop molding process. It can ensure that the rubber stopper has good elasticity and flexibility. Polyisoprene has excellent aging resistance and chemical corrosion resistance, so that the rubber stopper 2 can still maintain good performance during long-term use.

[0026] The filtering device is made of polytetrafluoroethylene material and will not react with the liquid medicine when contacting with the liquid medicine, ensuring the safety and purity of the liquid medicine. And the filtering device made of polytetrafluoroethylene material has excellent chemical stability and low friction coefficient, which makes the filtering device not easy to be corroded or blocked when filtering the liquid medicine. The thickness of the filter net 4 is 0.05 - 0.20 mm.

[0027] In addition, the diaphragm 3 is an aluminum foil or a non-PVC film, which can provide better biocompatibility and environmental protection. Aluminum foil has high barrier performance, can effectively prevent the intrusion of air and pollutants, and protect the liquid medicine from being contaminated. The non-PVC film avoids harmful substances such as plasticizers that may be contained in PVC materials, reducing the potential risks to the environment and human health. Embodiment

[0028] As Figure 3As shown, the difference between this embodiment and Embodiment 1 lies only in the number of puncture parts. Specifically, the number of puncture parts in this embodiment is two, which are arranged side by side on the cover body 1. The infusion cover with two puncture parts can provide greater operation flexibility, allowing medical staff to choose to use one or two puncture parts according to the treatment needs. In particular, in this embodiment, the two puncture parts can be set in different sizes, making this flexibility very useful for different treatment scenarios and patient needs.

[0029] The filter-type infusion cover provided by the present utility model has a single puncture part or a double puncture part. By integrating a filter device and an annular support structure inside the cover body 1, and using a rubber stopper 2 made of polyisoprene material and a filter net 4 made of polytetrafluoroethylene material, it effectively intercepts the debris generated during the puncture process and prevents it from entering the liquid medicine, thereby significantly improving the infusion safety, reducing the adverse reactions of patients caused by debris, and at the same time providing flexible infusion operations and an efficient production and manufacturing process.

[0030] In order to make it more convenient for those of ordinary skill in the art to understand the improvements of the present utility model over the prior art, some drawings and descriptions of the present utility model have been simplified, and the above embodiments are the preferred implementation solutions of the present utility model. In addition, the present utility model can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present utility model.

Claims

1. A filtering infusion cap, comprising a cap body (1) and a puncture part arranged on the cap body (1), wherein the puncture part includes a rubber stopper (2) fixed in the cap body (1), and is characterized in that: Inside the cap body (1) located below the rubber stopper (2), a filtering device is further provided. The filtering device includes a filter net (4) and a fixing ring (5) annularly arranged on the outer periphery of the filter net (4). A clamping groove (6) for the fixing ring (5) to be snapped into is annularly arranged on the inner wall surface of the cap body (1). At the top of the puncturing part, a diaphragm (3) for protecting the rubber stopper (2) is further provided.

2. The filter-type infusion cap according to claim 1, wherein: The puncturing part further includes an annular supporting part (7) arranged inside the cap body (1) and used for supporting the rubber stopper (2). A barrier layer (8) for preventing the liquid medicine from contaminating the rubber stopper (2) is further arranged inside the annular supporting part (7). The cap body (1), the annular supporting part (7) and the barrier layer (8) are of an integrally formed structure.

3. The filter type infusion cap according to claim 2, characterized in that: The top of the cap body (1) buckles the rubber stopper (2) by means of thermoplastic molding.

4. The filter-type infusion cap according to claim 3, characterized in that: The rubber stopper (2) is made of polyisoprene material and formed by the dipping process.

5. The filter-type infusion cap according to claim 4, wherein: The filtering device is made of polytetrafluoroethylene material.

6. The filter-type infusion cap according to claim 5, wherein: The thickness of the filter net (4) is 0.05 - 0.20 mm.

7. The filter type infusion cap according to claim 6, characterized in that: The diaphragm (3) is an aluminum foil or a non-PVC film.

8. The filter-type infusion cap according to claim 7, wherein: The number of the puncturing parts is two.

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