Multi-functional medical cap

Abstract

The utility model relates to medical appliance technical field, and its specific disclosure is a kind of multifunctional medical cap, for detachably connected at the opening of medical appliance, to block the opening and prevent drug solution leakage or contaminant intrusion, it includes cap main body and at least two connecting parts formed on the cap main body, the connecting part blocks at the liquid outlet nozzle of medical appliance;Wherein, at least two connecting parts are configured to selectively block different liquid outlet nozzle, to realize the compatibility sealing of single cap to multi-specification or multi-type medical appliance.Closely block the liquid outlet nozzle of medical appliance, form reliable sealing barrier, effectively prevent drug solution leakage and contaminant intrusion.Cap main body is formed with at least two connecting parts, and these connecting parts can be configured to selectively block different specification or type medical appliance liquid outlet nozzle, can adapt to multiple specifications and types of medical appliance, reduce the purchase quantity.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a multifunctional medical cap. Background Technology

[0002] In modern medical diagnosis and treatment, syringes, intravenous infusion sets, and other medical devices serve as fundamental tools for drug delivery and fluid handling. Their design rationality and usability have a crucial impact on clinical efficiency, medical safety, and cost control. Currently, disposable sterile syringes are predominantly designed with needles, where the syringe nozzle and needle are pre-assembled. While this approach covers most injection scenarios, its limitations are becoming increasingly apparent in the face of diverse clinical needs. In clinical practice, there are numerous scenarios where injection needles are unnecessary: ​​In chemotherapy drug preparation in oncology departments, medical staff use syringes to draw the medication and transfer it to infusion bags, where the injection needle serves no practical purpose; in community health service centers, when dispensing oral medications for chronic disease patients, only a syringe is needed for quantitative aspiration and transfer, making the needle-equipped structure redundant. In these scenarios, pre-filled needles in syringes not only increase the cost of a single product by 15%-20%, but also pose multiple risks—the needle is prone to bending due to impact, causing premature syringe failure; medical staff may suffer needlestick injuries when disassembling unused needles; and discarded needles must be disposed of separately as hazardous medical waste, significantly increasing the cost and complexity of medical waste disposal and management. Therefore, clinical institutions have clearly expressed a demand for needle-free syringes, and the research and development and promotion of such products has become an industry trend. The widespread adoption of needleless syringes has brought new safety challenges: without the natural shielding of the needle, the dispensing nozzle is completely exposed during transportation, storage, and transfer. Data shows that unsealed nozzles can cause 8%-12% leakage due to jostling during transport, resulting in waste of valuable medications and potential corrosion of transport containers or contamination of other medical supplies. More seriously, the exposed nozzle is directly exposed to air, creating an environment conducive to microbial growth. A clinical study showed that after two hours of storage, the bacterial count at the nozzle of an uncapped needleless syringe could be more than 30 times higher than the initial level. Direct use for medication transfer would significantly increase the risk of infection for patients. Therefore, hospitals and other end-users urgently need conical caps compatible with needleless syringes to effectively seal the dispensing nozzle and ensure medication safety. However, existing medical caps are insufficient to meet these needs, with the core problem being inadequate compatibility: current caps are mostly designed for a "one-to-one" fit, meaning one cap can only be used with a specific type of device—for example, a cap for a 10ml syringe cannot be used with a 20ml syringe, let alone connect to the dispensing nozzle of an intravenous infusion set. This forces hospitals to stock multiple caps for different sizes of syringes and infusion sets, increasing procurement costs and causing inconvenience for clinical use. In summary, the shortcomings of existing caps in terms of compatibility, sealing stability, and ease of operation have become clinical pain points in addressing the protective needs of medical devices such as needleless syringes and intravenous infusion sets. Developing a multifunctional medical cap that can adapt to multiple specifications and types of devices and has reliable sealing is of great practical significance for improving medical operation efficiency and ensuring medication safety. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the insufficient adaptability of existing medical caps and provide a multifunctional medical cap, a lock-lock syringe, and an intravenous infusion set. This multifunctional medical cap can be adapted to multiple specifications and types of medical devices, effectively ensuring the safety of medication, reducing hospital operating costs, and improving clinical operation efficiency.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A multifunctional medical cap is provided for detachably attaching to the opening of a medical device to seal the opening and prevent leakage of medication or intrusion of contaminants. The cap includes a cap body and at least two connecting portions formed on the cap body, the connecting portions sealing the dispensing nozzle of the medical device. The at least two connecting portions are configured to selectively seal different dispensing nozzles, achieving compatible sealing of a single cap for multiple sizes or types of medical devices. Furthermore, the cap body has a first end and a second end, the first end having a first connecting portion that matches the first type of dispensing nozzle of the medical device, and the second end having a second connecting portion that matches the second type of dispensing nozzle of the medical device. Furthermore, the outer peripheral surface of the first connecting part is provided with an external thread, which matches the internal thread at the first type of liquid outlet of the medical device; the second connecting part has a connecting cavity, and the inner peripheral wall of the connecting cavity is provided with an internal thread, which matches the external thread at the second type of liquid outlet of the medical device. Furthermore, the external thread of the second type of liquid outlet is provided on its own outer peripheral wall, and a plunger is provided in the connecting cavity of the second connecting part, the plunger being matched with the second type of liquid outlet.

[0005] Furthermore, the first connecting part is in the shape of a hollow cylinder, which is used to accommodate the first type of liquid outlet. Furthermore, the first type of liquid outlet is provided with a connecting ring around it, and the inner peripheral wall of the connecting ring is provided with an internal thread, and the external thread of the first connecting part is matched with the internal thread. Furthermore, the first connecting portion and the second connecting portion are coaxially arranged. Furthermore, the outer diameter D1 of the first connecting part is smaller than the outer diameter D2 of the second connecting part, so that a stepped shape is formed between the first connecting part and the second connecting part. Furthermore, the outer peripheral wall of the second connecting part is provided with an anti-slip structure, which is knurled, corrugated, or dotted.

[0006] Furthermore, the medical device includes at least one of a syringe and an intravenous infusion set.

[0007] Due to the adoption of the above technical solutions, this utility model has the following beneficial effects: This utility model's multifunctional medical cap can tightly seal the dispensing nozzle of medical devices, forming a reliable sealing barrier to effectively prevent drug leakage and contaminant intrusion. This ensures the safety and stability of medications during transportation, storage, and use, significantly reducing patient infection risks and drug waste. Furthermore, this multifunctional medical cap overcomes the limitations of traditional caps' "one-to-one" fit. Its cap body has at least two connecting parts, which can be configured to selectively seal the dispensing nozzles of different sizes or types of medical devices. For example, in the past, hospitals needed to stock multiple caps of different sizes for syringes (e.g., 10ml, 20ml) and intravenous infusion sets. This not only increased procurement costs but also occupied a large amount of inventory space, posing a significant challenge to inventory management. However, this multifunctional medical cap, through a single design, can adapt to multiple sizes and types of medical devices. Hospitals only need to stock this one type of cap to meet different needs, reducing the quantity purchased. Attached Figure Description

[0008] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of this utility model, and are not intended to limit this utility model.

[0009] Figure 1 This is a front view of the medical cap in an embodiment of the present utility model; Figure 2 This is a cross-sectional view of the medical cap in an embodiment of this utility model; Figure 3 This is a top view of the medical cap in an embodiment of this utility model; Figure 4 This is a schematic diagram of the lock-nose syringe in an embodiment of the present invention; Figure 5 This is a cross-sectional view of the lock-nose syringe in an embodiment of this utility model.

[0010] Figure label: 10. Cap body; 11. First connecting part; 111. External thread; 12. Second connecting part; 121. Connecting cavity; 122. Internal thread; 123. Plunger; 20. Locking nozzle syringe; 21. Cylinder; 211. Dispensing nozzle; 212. Connecting ring; 2121. Internal thread; 22. Push rod; 23. Piston head. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0012] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0013] Unless otherwise defined, the technical or scientific terms used in this patent document shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model patent specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "an," "a," or "the" do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" indicate that the element or object preceding "comprising" encompasses the element or object listed following "comprising" or its equivalents, and do not exclude other elements or objects. Terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are used only to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0014] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0015] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the features in the following embodiments can be combined with each other.

[0016] Example 1: Please see Figures 1-3 This utility model provides a multifunctional medical cap that can be adapted to various specifications and types of medical devices, effectively solving the problems of insufficient adaptability and poor sealing reliability of existing caps, and meeting the clinical needs for protection of medical device dispensing nozzles. Specifically, the multifunctional medical cap includes a cap body 10 and at least two connecting portions formed on the cap body 10. These connecting portions are used to seal the dispensing nozzle of a medical device. The at least two connecting portions are configured to selectively seal different dispensing nozzles, achieving compatible sealing of a single cap for multiple sizes or types of medical devices. In this embodiment, the cap body 10 has a first end and a second end. The first end has a first connecting portion 11 that matches a first type of dispensing nozzle of the medical device, and the second end has a second connecting portion 12 that matches a second type of dispensing nozzle of the medical device. The two connecting portions respectively adapt to different types of dispensing nozzles, resulting in a simple structure that meets basic compatibility requirements. Of course, in other embodiments, three or more connecting portions may be provided on the cap body 10 as needed to adapt to more sizes and types of medical devices; this is not specifically limited here.

[0017] In this embodiment, the first connecting part and the second connecting part can be configured as identical connecting structures, and they can be the same size or different sizes. When they are the same size, they are used to seal the openings of different medical instruments of the same specification; when they are different sizes, they are used to seal the openings of medical instruments of different specifications. Of course, the first connecting part and the second connecting part can also be configured as different connecting structures, such as the structure described below.

[0018] The first connecting part 11 is a hollow cylindrical shape, and its internal space is used to accommodate the first type of dispensing nozzle. When the first connecting part 11 is connected to the first type of dispensing nozzle, the first type of dispensing nozzle can extend into the first connecting part 11, improving the stability and sealing of the connection. The outer circumferential surface of the first connecting part 11 is provided with an external thread 111, which matches the internal thread of the first type of dispensing nozzle of the medical device. This threaded connection enables a detachable connection between the first connecting part 11 and the first type of dispensing nozzle. The threaded connection has the advantages of a strong connection and good sealing performance, effectively preventing the cap from falling off during transportation and use, and ensuring reliable sealing of the dispensing nozzle. Furthermore, the first type of nozzle has a connecting ring surrounding it, and the inner circumferential wall of the connecting ring has an internal thread. In this case, the external thread 111 of the first connecting part 11 matches the internal thread. Taking the nozzle of a lock-nose syringe as an example, its nozzle is usually surrounded by a connecting ring, and the inner circumferential wall of the connecting ring has an internal thread. The first connecting part 11 engages with the internal thread of the connecting ring through the external thread 111 on its outer circumferential surface, achieving a tight connection with the nozzle of the lock-nose syringe. This not only seals the nozzle but also enhances the stability of the connection with the help of the connecting ring. The second connecting part 12 has a connecting cavity 121 for accommodating the second type of dispensing nozzle. The inner peripheral wall of the connecting cavity 121 is provided with an internal thread 122, which matches the external thread of the second type of dispensing nozzle of the medical device. Similarly, the second connecting part 12 and the second type of dispensing nozzle are detachably connected through a threaded connection. When the external thread of the second type of dispensing nozzle is located on its own outer peripheral wall, the second type of dispensing nozzle can be directly screwed into the connecting cavity 121, and fixed by the engagement of the internal thread 122 and the external thread. Meanwhile, a plunger 123 is provided in the connecting cavity 121 of the second connecting part 12, and the plunger 123 matches the second type of dispensing nozzle. When the second type of dispensing nozzle is screwed into the connecting cavity 121, the plunger 123 can be inserted into the interior of the second type of dispensing nozzle, forming a double sealing structure. On the one hand, the internal thread 122 of the inner peripheral wall of the connecting cavity 121 engages with the external thread of the outer peripheral wall of the second type of dispensing nozzle to achieve external sealing; on the other hand, the plunger 123 is inserted into the interior of the second type of dispensing nozzle to achieve internal sealing. The double sealing can greatly improve the reliability of the seal and effectively prevent drug leakage and contaminant intrusion. The plunger 123 can be made of an elastic material, such as medical rubber. When the plunger 123 is inserted into the interior of the second type of dispensing nozzle, the elastic material can deform and fit tightly against the inner wall of the second type of dispensing nozzle, further enhancing the sealing effect. Furthermore, the first connecting part 11 and the second connecting part 12 are coaxially arranged, which ensures uniform force distribution when the cap is connected to the medical device, avoiding insecure connection or seal failure due to eccentricity. The outer diameter D1 of the first connecting part 11 is smaller than the outer diameter D2 of the second connecting part 12, forming a stepped shape between the first connecting part 11 and the second connecting part 12. The stepped shape design makes it easy for medical staff to quickly distinguish between the first connecting part 11 and the second connecting part 12, and allows for quick selection of the corresponding connecting part to connect to the dispensing nozzle of the medical device during clinical operation, improving operational efficiency. In addition, the outer peripheral wall of the second connecting part 12 is provided with an anti-slip structure, which can be knurled, corrugated, or dotted. In this embodiment, the anti-slip structure adopts a straight-knurled design. The anti-slip structure can increase the friction between the medical staff's hands and the second connecting part 12, especially when the medical staff are wearing gloves, which can prevent slipping, make it easier for the medical staff to tighten or remove the cap, and reduce the difficulty of operation. This multifunctional medical cap is designed to accommodate at least one of the following medical devices: a syringe or an intravenous infusion set. It can be used with both syringes without needles and intravenous infusion sets, enabling a single cap to be used in multiple scenarios. Example 2: Please see Figures 4-5 This utility model embodiment also provides a lock-nose syringe 20, including a barrel 21 and a push rod 22 slidably disposed in the barrel 21. The front end of the push rod 22 is provided with a piston head 23, and the dispensing nozzle 211 of the barrel 21 is provided with the multifunctional medical cap described in Embodiment 1. The dispensing nozzle 211 of the cylinder 21 is a first-type dispensing nozzle, and a connecting ring 212 is provided around it. The inner circumferential wall of the connecting ring 212 is provided with an internal thread 2121. The outer circumferential surface of the first connecting part 11 of the multifunctional medical cap is provided with an external thread 111, which matches the internal thread 2121 of the connecting ring 212. Through the threaded connection between the first connecting part 11 and the connecting ring 212, the multifunctional medical cap and the dispensing nozzle 211 of the locking syringe 20 are detachably connected. When the lock-on syringe 20 is used for aspiration, transfer of liquids, or other applications where a needle is not required, the first connecting part 11 of the multi-functional medical cap is screwed into the connecting ring 212. The first connecting part 11 is a hollow cylindrical shape, and the dispensing nozzle 211 is housed within it, effectively sealing the dispensing nozzle 211. This effectively prevents leakage and contaminant intrusion during transportation and storage, ensuring the safety and stability of the medication. When the lock-on syringe 20 is needed, simply unscrew the multi-functional medical cap; operation is convenient. Example 3: This utility model embodiment also provides an intravenous infusion set, including an infusion tube and a needle hub, wherein the infusion tube outlet is equipped with the multifunctional medical cap described in Embodiment 1. The infusion set's outlet is a type II outlet with external threads on its outer peripheral wall. The second connecting part 12 of the multifunctional medical cap has a connecting cavity 121, and the inner peripheral wall of the connecting cavity 121 has an internal thread 122 that matches the external thread of the infusion set's outlet. A plunger 123 is also provided inside the connecting cavity 121. When the intravenous infusion set is not in use or needs to be transported, screw the infusion nozzle into the connecting cavity 121 of the second connecting part 12. The external thread on the outer peripheral wall of the infusion nozzle engages with the internal thread 122 on the inner peripheral wall of the connecting cavity 121, and simultaneously, the plunger 123 is inserted into the infusion nozzle, forming a double seal. This sealing method effectively prevents leakage of the infusion solution from the infusion tubing and avoids contaminants entering the infusion tubing through the infusion nozzle, ensuring infusion safety. When the intravenous infusion set needs to be used, simply unscrew the multi-functional medical cap to proceed with the subsequent infusion operation. The following description, in conjunction with specific usage scenarios, further illustrates the multifunctional medical cap of this utility model: Scenario 1: Chemotherapy drug preparation in the oncology department In the oncology department, medical staff need to use syringes to draw chemotherapy drugs and transfer them into infusion bags. A needleless, locking syringe 20 is used. To prevent leakage during drug transfer and when transporting the infusion bag after transfer, medical staff screw the first connecting part 11 of a multi-functional medical cap into the connecting ring 212 surrounding the dispensing nozzle 211 of the locking syringe 20. The external thread 111 of the first connecting part 11 tightly engages with the internal thread 2121 of the connecting ring 212, and the dispensing nozzle 211 is accommodated within the hollow cylindrical structure of the first connecting part 11, achieving a reliable seal for the dispensing nozzle 211. During the transport of the infusion bag containing chemotherapy drugs to the patient, even with bumps, the effective seal of the cap prevents leakage, avoiding drug waste and occupational exposure to medical staff caused by leakage. Scenario 2: Repackaging oral liquid medications at community health service centers When community health service centers dispense oral medications for patients with chronic diseases, they use needleless syringes for quantitative aspiration and dispensing. After dispensing, the syringes need to be stored for a period of time until patients can collect them. During this time, medical staff connect the first connecting part 11 of a multi-functional medical cap to the dispensing nozzle of the syringe, sealing the nozzle. Due to the sealing effect of the cap, airborne microorganisms are prevented from entering the syringe and contaminating the medication. Tests showed that after 2 hours of storage, the bacterial count at the dispensing nozzle of the syringe using the multi-functional medical cap was only about 5 times that of the initial state, far lower than the more than 30-fold increase in bacterial count of the uncapped syringe, greatly reducing the risk of patients ingesting contaminated medication. Scenario 3: Storage of Intravenous Infusion Sets The hospital's warehouse stores a large number of unused intravenous infusion sets. To ensure the sterility of these sets, the infusion nozzles need to be sealed and protected. The second connecting part 12 of a multi-functional medical cap is connected to the infusion nozzle of the intravenous infusion set. The nozzle is screwed into the connecting cavity 121, and the internal thread 122 within the connecting cavity 121 engages with the external thread of the nozzle. Simultaneously, the plunger 123 is inserted into the nozzle. This double-sealing structure effectively prevents external contaminants from entering the infusion tubing, ensuring the infusion set is sterile before use. When retrieving the intravenous infusion set clinically, medical staff can easily unscrew the cap by grasping the knurled anti-slip structure on the outer periphery of the second connecting part 12, making the operation convenient and efficient. Scenario 4: Hospital Consumables Management Previously, hospitals needed to stock various caps of different sizes for syringes (e.g., 10ml, 20ml) and intravenous infusion sets. This resulted in a large variety of caps in the consumables inventory, consuming significant space and increasing procurement and management costs. With the adoption of this new multifunctional medical cap, which can accommodate multiple sizes and types of medical devices, hospitals only need to stock one type to meet diverse needs. For example, a top-tier hospital previously needed to stock 8-10 different cap sizes, with annual procurement costs of approximately 30,000-50,000 yuan. After adopting this multifunctional medical cap, only 1-2 types need to be stocked, reducing annual procurement costs by 40%-60%. Inventory management is also significantly simplified, and medical staff no longer need to spend time verifying cap models during clinical use, improving work efficiency. In summary, this utility model's multifunctional medical cap, by featuring at least two connecting parts, achieves compatible sealing for various specifications and types of medical devices, breaking the limitations of traditional caps' "one-to-one" fit. The threaded connection combined with the plunger's double-sealing structure effectively improves sealing reliability, preventing drug leakage and contaminant intrusion. The stepped shape and anti-slip structure design facilitate quick identification and removal of the cap by medical personnel, improving clinical operational efficiency. Furthermore, the locking syringe and intravenous infusion set equipped with this multifunctional medical cap also enhance safety and practicality during use, better meeting diverse clinical needs and possessing high value for widespread application.

[0019] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A multifunctional medical cap for detachably attaching to the opening of a medical device to seal the opening and prevent leakage of medication or intrusion of contaminants, characterized in that: It includes a cap body and at least two connecting portions formed on the cap body, the connecting portions sealing the outlet of the medical device; The at least two connecting parts are configured to selectively block different dispensing nozzles to achieve a single cap that provides a compatible seal for multiple sizes or types of medical devices.

2. The medical cap according to claim 1, characterized in that, The cap body has a first end and a second end. The first end has a first connecting part that matches the first type of liquid outlet of the medical device, and the second end has a second connecting part that matches the second type of liquid outlet of the medical device.

3. The medical cap according to claim 2, characterized in that, The outer peripheral surface of the first connecting part is provided with an external thread, which matches the internal thread at the first type of liquid outlet of the medical device; the second connecting part has a connecting cavity, and the inner peripheral wall of the connecting cavity is provided with an internal thread, which matches the external thread at the second type of liquid outlet of the medical device.

4. The medical cap according to claim 3, characterized in that, The external thread of the second type of liquid outlet is provided on its own outer peripheral wall, and a plunger is provided in the connecting cavity of the second connecting part, the plunger being matched with the second type of liquid outlet.

5. The medical cap according to claim 2, characterized in that, The first connecting part is a hollow cylindrical shape, which is used to accommodate the first type of liquid outlet.

6. The medical cap according to claim 5, characterized in that, The first type of liquid outlet is provided with a connecting ring around it, and the inner circumferential wall of the connecting ring is provided with an internal thread, and the external thread of the first connecting part is matched with the internal thread.

7. The medical cap according to claim 2, characterized in that, The first connecting part and the second connecting part are coaxially arranged.

8. The medical cap according to claim 2, characterized in that, The outer diameter D1 of the first connecting part is smaller than the outer diameter D2 of the second connecting part, so that a stepped shape is formed between the first connecting part and the second connecting part.

9. The medical cap according to claim 8, characterized in that, The outer peripheral wall of the second connecting part is provided with an anti-slip structure, which is knurled, corrugated, or dotted.

10. The medical cap according to claim 1, characterized in that, The medical device includes at least one of a syringe and an intravenous infusion set.

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