Bidirectional connecting cover

Abstract

The utility model provides a two-way connecting cover which is used for guiding liquid medicine and comprises an integrally-formed cover body, the cover body comprises a connecting part and a functional part, and the bottom of the functional part extends outwards and downwards to form the connecting part; the connecting part comprises a first shell and a connecting inner column, the top of the first shell extends downwards to form the connecting inner column, the connecting inner column is arranged in the first shell, and a first flow guide channel is formed in the connecting inner column; the functional part comprises a second shell and a liquid outlet pipe arranged in the second shell, the horizontal height of a liquid outlet of the liquid outlet pipe is higher than the horizontal height of the top of the second shell, and a liquid outlet channel and a liquid collecting cavity are formed in the liquid outlet pipe from top to bottom; and the first flow guide channel, the liquid gathering cavity and the liquid outlet channel are communicated in sequence. The eyedrop bottle cap solves the technical problems that a traditional eyedrop bottle cap is single in structure and poor in flow guide effect.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical packaging technology, and more specifically to a two-way connecting cover. Background Technology

[0002] In the field of ophthalmic medical care, traditional eye drop bottle caps currently have a simple structure and limited functionality. On one hand, in terms of connection methods, they lack a design that can stably connect to multiple devices, limiting them to simple eye drop applications. When more complex operations such as eye rinsing are required, external connectors are needed to connect to devices like rinsing tools, severely restricting the usage scenarios and medical effects of eye drop bottles. This cumbersome connection method also increases production costs. Furthermore, the connection stability of external rinsing tools to traditional eye drop bottles cannot be guaranteed; they are prone to detachment at high flow rates, potentially causing injury to the user. On the other hand, regarding drug flow, there is no reasonable structure to ensure a stable and even flow of the drug, which may lead to uneven flow rates during eye drops or rinsing, affecting the treatment experience and safety. Utility Model Content

[0003] The purpose of this utility model is to overcome the defects of the prior art and provide a two-way connecting cap, which aims to solve the technical problems of the traditional eye drop bottle cap having a simple structure and poor flow guiding effect.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A bidirectional connecting cap for guiding liquid medicine flow includes an integrally formed cap body, the cap body including a connecting part and a functional part, the connecting part being arranged with the bottom of the functional part extending outward and downward; the connecting part including a first shell and a connecting inner post extending downward from the top of the first shell, the connecting inner post being disposed inside the first shell, the connecting inner post having a first guiding channel inside the connecting inner post; the functional part including a second shell and a liquid outlet pipe disposed inside the second shell, the liquid outlet of the liquid outlet pipe being at a horizontal height higher than the top horizontal height of the second shell, the liquid outlet pipe having a liquid outlet channel and a liquid collection chamber arranged from top to bottom inside the liquid outlet pipe; the first guiding channel, the liquid collection chamber and the liquid outlet channel are sequentially connected.

[0006] In one embodiment, a first connecting groove is formed between the second housing and the liquid outlet pipe, and the inner wall of the second housing near the liquid outlet pipe is provided with a threaded post.

[0007] In one embodiment, a second connecting groove is formed between the first housing and the connecting inner column, and the inner sidewall of the first housing near the connecting inner column is provided with a threaded column.

[0008] In one embodiment, the inner diameter of the first guide channel is larger than the inner diameter of the liquid inlet of the liquid-gathering chamber.

[0009] In one embodiment, a second guide channel is provided between the liquid collection chamber and the liquid outlet channel. The first guide channel, the liquid collection chamber, the second guide channel and the liquid outlet channel are connected in sequence. The inner diameter of the second guide channel is smaller than the inner diameter of the liquid outlet of the liquid collection chamber.

[0010] In one embodiment, the inner diameter of the inlet of the liquid outlet channel is larger than the inner diameter of the second guide channel.

[0011] In one embodiment, the outer diameter of the outlet pipe gradually decreases along the direction from the inlet of the outlet channel to the outlet of the outlet channel.

[0012] In one embodiment, the inner diameter of the liquid outlet channel gradually increases from the liquid inlet to the liquid outlet.

[0013] In one embodiment, the outer diameter of the second housing is smaller than the outer diameter of the first housing.

[0014] In one embodiment, the outer wall of the first housing is provided with anti-slip protrusions.

[0015] The advantages of this utility model compared with the prior art are: (1) The first connecting groove structure enables the outlet tube to be reliably connected to the rinsing tool, realizing the rinsing function and meeting different eye treatment needs. It can easily handle both daily eye drops and professional eye rinsing, greatly expanding the application scenarios of the eye drop bottle. The threaded column structure effectively locks the rinsing tool, thereby preventing the rinsing tool from falling off during use. (2) The connecting inner column and the first connecting groove are integrated into the cover body, so that the connection between the cover body and the rinsing tool and other devices does not require complicated steps. At the same time, the number of connecting parts used is greatly reduced, and the production cost is reduced. (3) The setting of the outlet channel and the liquid collection chamber inside the outlet tube, combined with the first guide channel, the second guide channel and the reasonable change of the inner diameter of each part, ensures the high quality of the liquid flow, effectively controls the liquid flow rate and flow rate, and makes the liquid flow more uniform and stable, avoiding the stimulation or damage to the eyes caused by the flow rate being too fast or too slow, and improving the safety and comfort of eye treatment.

[0016] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of this utility model more obvious and easy to understand, the following are preferred embodiments, which are described in detail below. Attached Figure Description

[0017] Figure 1A three-dimensional structural diagram of a bidirectional connecting cover provided by this utility model;

[0018] Figure 2 A schematic diagram of the planar structure of a bidirectional connecting cover provided by this utility model;

[0019] Figure 3 for Figure 2 A cross-sectional view along the AA direction.

[0020] Figure Labels

[0021] 1. Cover; 11. Connecting part; 111. First housing; 112. Connecting inner column; 1121. First guide channel; 113. Second connecting groove; 12. Functional part; 121. Second housing; 122. Liquid outlet pipe; 1221. Liquid outlet channel; 1222. Liquid collection chamber; 123. First connecting groove; 124. Second guide channel; 13. Anti-slip ridge. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0025] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0026] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0027] See Figures 1 to 3 As shown, this utility model discloses a bidirectional connecting cap for guiding liquid medicine. It includes an integrally formed cap body 1, which comprises a connecting portion 11 and a functional portion 12. The connecting portion 11 extends outward and downward from the bottom of the functional portion 12. The connecting portion 11 includes a first housing 111 and a connecting inner post 112 extending downward from the top of the first housing 111. The connecting inner post 112 is located inside the first housing 111 and has a first guide channel 1121. The functional portion 12 includes a second housing 121 and a liquid outlet pipe 122 located inside the second housing 121. The horizontal height of the liquid outlet of the liquid outlet pipe 122 is higher than the horizontal height of the top of the second housing 121. The liquid outlet pipe 122 has a liquid outlet channel 1221 and a liquid collection chamber 1222 arranged from top to bottom. The first guide channel 1121, the liquid collection chamber 1222, and the liquid outlet channel 1221 are sequentially connected.

[0028] Specifically, in this embodiment, the bidirectional connecting cap is a single-piece molded cap body 1, ensuring the integrity and stability of the structure and reducing potential gaps or loosening issues caused by component connections. The cap body 1 is divided into a connecting part 11 and a functional part 12. The connecting part 11 extends outward and downward from the bottom of the functional part 12, allowing the connecting part 11 to connect with an external container, such as an eye drop bottle. The connecting part 11 and the functional part 12 do not interfere with each other, and the connecting part 11 provides stable support for the normal operation of the functional part 12. The connecting part 11 includes a first housing 111 and a connecting inner post 112. The first housing 111 serves as the external protection and connection part, providing a space to accommodate the internal connecting inner post 112. The connecting inner post 112 extends downward from the top of the first housing 111 and is located inside the first housing 111. It has a first guide channel 1121 inside, allowing the liquid medicine to be orderly transferred to the functional part 12 after entering the connecting cap from the external container through the first guide channel 1121. The connecting inner post 112 also plays a role in buffering and stabilizing the flow of the liquid medicine to a certain extent.

[0029] The functional unit 12 includes a second housing 121 and a liquid outlet tube 122. The second housing 121 provides a relatively stable external environment for the liquid outlet tube 122, protecting the tube from damage caused by external forces. The liquid outlet tube 122 is used to achieve the final output of the medicine. It has an internal liquid outlet channel 1221 and a liquid collection chamber 1222. The first guide channel 1121, the liquid collection chamber 1222, and the liquid outlet channel 1221 are connected in sequence to form a complete medicine flow path, so that after the medicine enters from the connecting part 11, it can be gathered, buffered, and output controlled in the functional unit 12. The horizontal height of the liquid outlet of the liquid outlet tube 122 is higher than the top horizontal height of the second housing 121. When performing eye drops, this avoids the second housing 121 interfering with the function of the liquid outlet tube 122. The user can quickly identify the position of the liquid outlet of the liquid outlet tube 122, ensuring that the medicine flowing out of the liquid outlet tube 122 can accurately and directly act on the eye.

[0030] In one embodiment, a first connecting groove 123 is formed between the second housing 121 and the liquid outlet pipe 122, and the second housing 121 is provided with a threaded post on the inner side wall near the liquid outlet pipe 122.

[0031] Specifically, a first connecting groove 123 is formed between the second housing 121 and the liquid outlet pipe 122. The first connecting groove 123 surrounds the liquid outlet pipe 122, providing a spatial positioning and accommodating area for other components that may mate with it. For example, when it is necessary to connect some auxiliary drug delivery devices, the connecting groove can ensure that these components are accurately aligned with the liquid outlet pipe 122 in the radial direction, ensuring the coaxiality and stability of the connection, avoiding offset or shaking during the connection process, and providing a reliable foundation for subsequent functional implementation.

[0032] The threaded post on the inner wall of the second housing 121 near the outlet pipe 122 provides stronger tightness and adjustability when the connecting cover is connected to the external component. When an external component mates with the first connecting groove 123, the threaded post can be screwed into the corresponding threaded structure on the external component. This screwed connection is more secure than a simple plug-in connection and can withstand a certain amount of external force without easily loosening. Moreover, the tightness of the connection between the external component and the outlet pipe 122 can be precisely adjusted by the degree of thread engagement, further ensuring the sealing and stability of the connection.

[0033] In one embodiment, a second connecting groove 113 is formed between the first housing 111 and the connecting inner post 112, and the first housing 111 is provided with a threaded post on the inner sidewall near the connecting inner post 112.

[0034] Specifically, the second connecting groove 113 is located between the first housing 111 and the connecting inner post 112, providing a crucial connection space for connecting external structures such as eye drop bottles. Understandably, this connecting groove is specifically designed, its shape and size adapted to the interface of the eye drop bottle neck or other similar liquid containers. When connecting an eye drop bottle, the neck can be embedded in the second connecting groove 113, and the connecting inner post 112 is inserted into the bottle opening of the neck, achieving initial positioning and partial connection functions, ensuring the stability and accuracy of the connection, and maintaining a relatively fixed position between the eye drop bottle and the connecting cap in both the axial and radial directions. Simultaneously, the tight connection between the connecting inner post 112 and the neck ensures the sealing of the connection between the connecting cap and the eye drop bottle, reducing problems such as liquid leakage or poor flow caused by shaking or displacement. After the eye drop bottle neck is embedded in the second connecting groove 113, the threaded post on the inner wall of the first housing 111 near the connecting inner post 112 engages with the corresponding threaded structure on the eye drop bottle neck for a screw-on fastening. The screw connection ensures that the eye drop bottle remains securely attached to the cap when subjected to external force, preventing it from easily detaching. Furthermore, the screw connection guarantees a good seal, preventing leakage of the medication from the connection point 11, further ensuring the integrity and safety of the medication during dispensing.

[0035] In one embodiment, the inner diameter of the first guide channel 1121 is larger than the inner diameter of the liquid inlet of the liquid collection chamber 1222.

[0036] Specifically, the first guide channel 1121 serves as the initial channel for the liquid to enter the connecting cap. Its larger inner diameter reduces resistance during liquid entry, facilitating rapid inflow and allowing the liquid to flow smoothly from the bottle through the first guide channel 1121 into the internal structure of the connecting cap, even when the connected liquid container is inverted or tilted. The liquid collection chamber 1222 has a smaller inlet diameter, creating a bottleneck structure. When the liquid enters the smaller inlet of the liquid collection chamber 1222 from the larger inner diameter first guide channel 1121, the sudden reduction in cross-sectional area, according to fluid mechanics principles, increases the flow velocity while maintaining a constant flow rate. This prevents blockages or interruptions in the liquid's flow from storage to use, ensuring smooth liquid flow. It is understood that the liquid collection chamber 1222 can temporarily store a certain amount of liquid, providing a stable accumulation space before outflow, thus preventing instability in liquid flow.

[0037] Meanwhile, the smaller inner diameter of the inlet of the liquid collection chamber 1222 compared to the inner diameter of the first guide channel 1121 effectively prevents backflow of the medication. Due to the smaller inlet, the medication can smoothly enter the liquid collection chamber 122 from the first guide channel 1121 under normal flow conditions. However, when the medication flows back from the liquid collection chamber 1222 to the first guide channel 1121, the larger inner diameter of the first guide channel 1121 forces the backflowing medication to overcome greater resistance, effectively preventing backflow and ensuring that the medication always flows in the predetermined direction—from the eye drop bottle through the connecting cap to the application area—thus improving the reliability of the entire flow system.

[0038] In one embodiment, a second guide channel 124 is provided between the liquid collection chamber 1222 and the liquid outlet channel 1221. The first guide channel 1121, the liquid collection chamber 1222, the second guide channel 124 and the liquid outlet channel 1221 are connected in sequence. The inner diameter of the second guide channel 124 is smaller than the inner diameter of the liquid outlet of the liquid collection chamber 1222.

[0039] Specifically, the second guide channel 124 is located between the liquid collection chamber 1222 and the liquid outlet channel 1221. When the medication enters the liquid collection chamber 1222 from a container such as an eye drop bottle through the first guide channel 1121, it flows through the second guide channel 124 to the liquid outlet channel 1221, and finally flows out for eye drops or other medical procedures. The inner diameter of the second guide channel 124 is smaller than the inner diameter of the liquid outlet of the liquid collection chamber 1222. When the medication flows out of the liquid collection chamber 1222, according to the principles of fluid mechanics, with a constant flow rate, a smaller pipe diameter will increase the flow velocity, ensuring that the medication has sufficient power to continue flowing towards the liquid outlet channel 1221, making the medication flow more uniform and stable, which is beneficial for precise eye medication administration. At the same time, the smaller inner diameter of the second guide channel 124 can prevent medication backflow to a certain extent. From the outlet channel 1221 to the collection chamber 1222, due to the smaller inner diameter of the second guide channel 124, the backflow of the medication needs to overcome greater resistance. This ensures unidirectional flow of the medication from the collection chamber 1222 to the outlet channel 1221, maintaining the orderliness of the entire flow process and ensuring that each drop of medication flows out accurately along the designed path, thus improving the safety and effectiveness of medical procedures. It is understandable that the difference in inner diameter between the collection chamber 1222 and the second guide channel 124 provides the collection chamber 1222 with a temporary storage space for a certain amount of liquid, avoiding instability in the liquid flow.

[0040] In one embodiment, the inner diameter of the inlet of the liquid outlet channel 1221 is larger than the inner diameter of the second guide channel 124.

[0041] Specifically, when the medication flows from the collection chamber 1222 through the second guide channel 124, the flow rate is relatively fast due to the smaller inner diameter of the second guide channel 124. However, when the medication reaches the inlet of the outlet channel 1221 from the second guide channel 124, the flow rate decreases due to the sudden increase in cross-sectional area. This buffering and stabilizing of the flow rate prevents the medication from rushing out of the outlet channel 1221 at excessively high speeds, allowing the medication to flow at a more stable rate within the outlet channel 1221. For applications requiring precise medication delivery, such as eye drops, a stable flow rate helps ensure accurate application to the target location, preventing eye irritation or damage caused by excessively fast flow. Simultaneously, the larger inner diameter of the inlet of the outlet channel 1221 helps prevent blockage by tiny particles or drug components, ensuring smooth medication flow and improving the efficiency and therapeutic effect of medication use.

[0042] In one embodiment, the outer diameter of the outlet pipe 122 gradually decreases along the direction from the inlet of the outlet channel 1221 to the outlet of the outlet channel 1221.

[0043] Specifically, the gradually decreasing outer diameter of the outlet tube 122 is designed for better compatibility and connection with external components. For example, when flushing is required, the external needle can be fitted onto the outer wall of the outlet tube 122. The gradual increase in the outer diameter of the outlet tube 122 from top to bottom provides a gradual clamping force. The needle connector is connected downwards from the outlet of the outlet tube 122 towards the inlet. As the outer diameter gradually increases, the needle will be subjected to a gradually increasing squeezing force during insertion, thereby generating friction on the contact surface between the needle and the outlet tube 122. The needle gradually wraps tightly around the outer wall of the outlet tube 122 and is firmly clamped onto the outlet tube 122. By using this snap-fit ​​connection method to connect the external needle, it is possible to effectively prevent the external needle from loosening or falling off during use, ensuring a tight connection between the external needle and the liquid outlet tube 122. This guarantees that the liquid can flow out stably through the external needle during operations such as rinsing, and will not cause leakage or poor flow due to loose connection.

[0044] In one embodiment, the inner diameter of the liquid outlet channel 1221 gradually increases along the direction from the liquid inlet of the liquid outlet channel 1221 to the liquid outlet of the liquid outlet channel 1221.

[0045] Specifically, the inner diameter of the liquid outlet channel 1221 gradually increases from the inlet to the outlet. During the flow of the liquid, the liquid enters the relatively wide main body of the liquid outlet channel 1221 from the narrower inlet, and the liquid undergoes a diffusion process, which reduces the flow rate of the liquid and helps to stabilize the flow of the liquid. This prevents the liquid from rushing out of the outlet at too high a speed, so that the liquid can flow out at a more uniform and stable speed.

[0046] In one embodiment, the outer diameter of the second housing 121 is smaller than the outer diameter of the first housing 111.

[0047] Specifically, the difference in outer diameter between the first housing 111 and the second housing 121 facilitates functional zoning, making the direction of use of the connecting cover immediately clear. At the same time, the reduction in the outer diameter of the second housing 121 not only reduces the amount of production materials used and lowers production costs, but also reduces the overall weight of the connecting cover, making it lighter and easier to carry and use.

[0048] In one embodiment, the outer wall of the first housing 111 is provided with anti-slip protrusions 13.

[0049] Specifically, anti-slip protrusions 13 are distributed along the circumference of the outer wall of the first housing 111 to increase friction. When a user grips the first housing 111, the anti-slip protrusions 13 increase the friction between the hand and the housing, preventing the hand from slipping on the housing. This is crucial for situations requiring precise operation, such as when connecting an eye drop bottle; a stable grip improves the accuracy and safety of the operation. It is understood that the anti-slip protrusions 13 are integrally injection molded with the first housing 111, resulting in high strength and durability.

[0050] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. A bidirectional connecting cap for guiding a medicinal liquid, characterized in that, The cover is integrally formed, and includes a connecting part and a functional part. The connecting part is arranged to extend outward and downward from the bottom of the functional part. The connecting part includes a first shell and a connecting inner column arranged to extend downward from the top of the first shell. The connecting inner column is arranged in the first shell, and a first flow guide channel is arranged in the connecting inner column. The functional part includes a second shell and a liquid outlet pipe arranged in the second shell. The liquid outlet of the liquid outlet pipe is arranged to be higher than the top of the second shell. A liquid outlet passage and a liquid collecting cavity are arranged in the liquid outlet pipe from top to bottom. The first flow guide channel, the liquid collecting cavity and the liquid outlet passage are sequentially connected.

2. A dual-directional connecting cap according to claim 1, wherein, A first connecting groove is formed between the second shell and the liquid outlet pipe. A threaded column is arranged on the inner side wall of the second shell close to the liquid outlet pipe.

3. The dual-directional connecting cap of claim 1, wherein, A second connecting groove is formed between the first shell and the connecting inner column. A threaded column is arranged on the inner side wall of the first shell close to the connecting inner column.

4. The dual-directional connecting cap of claim 1, wherein, The inner diameter of the first flow guide channel is larger than the inner diameter of the liquid inlet of the liquid collecting cavity.

5. The dual-directional connecting cap of claim 1, wherein, A second flow guide channel is arranged between the liquid collecting cavity and the liquid outlet passage. The first flow guide channel, the liquid collecting cavity, the second flow guide channel and the liquid outlet passage are sequentially connected. The inner diameter of the second flow guide channel is smaller than the inner diameter of the liquid outlet of the liquid collecting cavity.

6. A dual direction coupling cap as claimed in claim 5, wherein, The inner diameter of the liquid inlet of the liquid outlet passage is larger than the inner diameter of the second flow guide channel.

7. The dual-directional connecting cap of claim 1, wherein, The outer diameter of the liquid outlet pipe gradually decreases from the liquid inlet of the liquid outlet passage to the liquid outlet of the liquid outlet passage.

8. The dual-directional connecting cap of claim 1, wherein, The inner diameter of the liquid outlet passage gradually increases from the liquid inlet of the liquid outlet passage to the liquid outlet of the liquid outlet passage.

9. The dual-directional connecting cap of claim 1, wherein, The outer diameter of the second shell is smaller than the outer diameter of the first shell.

10. The dual-directional connecting cap of claim 1, wherein, An anti-skid convex strip is arranged on the outer wall of the first shell.

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