Multifunctional eye drop device

Abstract

The multifunctional eye drop device comprises a liquid storage bottle, a connecting cover and a protective cover, the liquid storage bottle comprises a bottle body part and a bottle opening part, a liquid storage cavity is formed in the bottle body part, a first flow guide channel is formed in the bottle opening part, the first flow guide channel is communicated with the liquid storage cavity, and the liquid storage cavity is used for storing eye drop medicine; the connecting cover comprises a cover body part and a connecting part, the cover body part is detachably connected to the bottle opening part, the connecting part is used for being connected with a needle instrument, and the connecting part is detachably connected with the needle instrument; the inner diameter of the protective cover is matched with the outer diameter of the connecting part, and the protective cover is detachably connected to the connecting part. The utility model solves the technical problem that the traditional eye drop device cannot simultaneously meet the requirements of convenient connection and sealing of the novel eye drop device and the needle due to single function.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical container technology, and more specifically to a multifunctional eye drop device. Background Technology

[0002] Traditional eye drop devices have limited functionality, only allowing for simple eye drop administration. In situations requiring eye irrigation, healthcare professionals often need additional devices to connect the eye drops to the needle, a process that is cumbersome and difficult. For example, complex adapters are required to connect the eye drops to the needle, which not only increases preparation time and costs but also increases the risk of errors due to the complexity of the procedure. Furthermore, improper connection of the adapter can lead to insufficient sealing and leakage.

[0003] Meanwhile, in some existing eye drop devices that can be connected to needles, the needle and the cap are often secured with an interference fit to prevent the needle from falling off. However, this method may not be secure enough in actual use, especially during rinsing, where external force may cause the needle to loosen or even fall off, thus affecting the rinsing effect and potentially causing damage to the patient's eye.

[0004] Therefore, traditional eye drop devices with limited functionality cannot meet the requirements of new eye drop devices that need to be easily connected to needles while ensuring sealing and safety. There is an urgent need in the market for a new type of eye drop device to solve the above problems and improve the ease of operation and safety. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a multifunctional eye drop device. The purpose is to solve the technical problem that traditional eye drop devices cannot simultaneously meet the requirements of convenient connection between the new eye drop device and the needle and ensure sealing due to their single function.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A multifunctional eye drop device includes a reservoir bottle, a connecting cap, and a protective cap. The reservoir bottle includes a body and a mouth. The body has a reservoir cavity, and the mouth has a first flow channel connected to the reservoir cavity. The reservoir cavity is used to store eye drops. The connecting cap includes a cap body and a connecting part. The cap body is detachably connected to the mouth, and the connecting part is used to connect a needle. The connecting part and the needle are detachably connected. The inner diameter of the protective cap matches the outer diameter of the connecting part, and the protective cap is detachably connected to the connecting part.

[0008] In one embodiment, the top of the cap portion extends downwards and is provided with a first inner post, the outer diameter of the first inner post being larger than the inner diameter of the bottle mouth portion; the inner wall of the cap portion is screwed to the outer wall of the bottle mouth portion, and the outer wall of the first inner post is sealed to the inner wall of the bottle mouth portion.

[0009] In one embodiment, the first inner column is provided with a second guide channel, which is connected to the first guide channel.

[0010] In one embodiment, the connecting part includes a dropper and an outer post. The outer post is arranged around the outside of the dropper, and a connecting groove is formed between the dropper and the outer post. The top horizontal plane of the outer post is lower than the top horizontal plane of the dropper. The inner wall of the outer post is provided with threaded threads.

[0011] In one embodiment, the dripper is provided with a liquid outlet channel and a liquid collection chamber from top to bottom, and the liquid outlet channel, the liquid collection chamber and the liquid storage chamber are connected in sequence.

[0012] In one embodiment, the needle includes a needle tube and a connector. The connector is sleeved on the outer wall of the dropper and snapped into the connecting groove so that the needle tube is connected to the dropper.

[0013] In one embodiment, the connector has a snap-fit ​​wall extending outward from its bottom, which snaps into the threads of the inner wall of the outer column.

[0014] In one embodiment, the outer diameter of the dripper is larger than the inner diameter of the connector, so that the outer wall of the dripper and the inner wall of the connector can achieve a sealed connection.

[0015] In one embodiment, the protective cover includes a cap portion and a second inner post disposed on the top of the cap portion and extending downward. The second inner post has a hollow structure, is snapped into the connecting groove, and the outer wall of the second inner post is threadedly connected to the inner wall of the outer post.

[0016] In one embodiment, the inner diameter of the second inner column is smaller than the outer diameter of the dripper, so that the outer wall of the dripper and the inner wall of the second inner column are sealed together.

[0017] The advantages of this utility model compared with the prior art are: (1) Based on the eye drop function, by setting a connecting part for connecting needles in the connecting cap, the combination of eye drop and rinsing functions is realized, which expands the application scenarios of the device. There is no need to use other auxiliary devices to complete the rinsing operation, which greatly improves the convenience of use and effectively reduces the user's cost. (2) Through the interference fit and the threaded structure of the outer column, the stability of the connection between the needle and the connecting cap is ensured, which effectively prevents the needle from falling off during use. (3) This utility model also has a sealing design at the connection between the connecting cap and the protective cap, the connecting cap and the needle, and the connecting cap and the liquid storage bottle, replacing the traditional inner plug structure, which ensures the overall good sealing of the device, thereby effectively preventing the leakage of eye drops.

[0018] 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

[0019] Figure 1 An exploded view of a multifunctional eye drop device provided by this utility model;

[0020] Figure 2 A schematic diagram of the structure of a multifunctional eye drop device provided by this utility model during eye drop operation;

[0021] Figure 3 for Figure 2 Cross-sectional view along the AA direction;

[0022] Figure 4 A schematic diagram of the structure of a multifunctional eye drop device during rinsing operation provided by this utility model;

[0023] Figure 5 for Figure 4 Cross-sectional view along the middle BB direction;

[0024] Figure 6 A schematic diagram of the structure of a multifunctional eye drop device when not in operation, provided by this utility model;

[0025] Figure 7 for Figure 6 Cross-sectional view along the CC direction.

[0026] Figure Labels

[0027] 1. Liquid storage bottle; 11. Bottle body; 111. Liquid storage chamber; 12. Bottle mouth; 121. First guide channel; 2. Connecting cap; 21. Cap body; 211. First inner column; 2111. Second guide channel; 22. Connecting part; 221. Dropper; 2211. Liquid outlet channel; 2212. Liquid collection chamber; 222. Outer column; 223. Connecting groove; 3. Protective cap; 31. Cap part; 32. Second inner column; 4. Needle; 41. Needle tube; 42. Connector; 421. Snap-fit ​​wall. Detailed Implementation

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] See Figures 1 to 7As shown, this utility model discloses a multifunctional eye drop device, including a storage bottle 1, a connecting cap 2, and a protective cap 3. The storage bottle 1 includes a bottle body 11 and a bottle mouth 12. The bottle body 11 has a storage cavity 111 inside, and the bottle mouth 12 has a first guide channel 121 inside, which is connected to the storage cavity 111. The storage cavity 111 is used to store eye drops. The connecting cap 2 includes a cap body 21 and a connecting part 22. The cap body 21 is detachably connected to the bottle mouth 12, and the connecting part 22 is used to connect a needle 4. The connecting part 22 and the needle 4 are detachably connected. The inner diameter of the protective cap 3 matches the outer diameter of the connecting part 22, and the protective cap 3 is detachably connected to the connecting part 22.

[0034] Specifically, the multifunctional eye drop device in this embodiment consists of three main parts: a storage bottle 1, a connecting cap 2, and a protective cap 3. The storage bottle 1 is divided into a body 11 and a mouth 12. The body 11 contains a storage chamber 111 for storing eye drops. The mouth 12 contains a first flow channel 121, which communicates with the storage chamber 111 to provide a channel for the medication to flow out. The connecting cap 2 includes a cap body 21 and a connecting part 22. The cap body 21 can be detachably connected to the mouth 12, facilitating the assembly and disassembly of the connecting cap 2 and the storage bottle 1. The connecting part 22 can be detachably connected to a needle 4, allowing the device to connect the needle 4 as needed to complete the rinsing function. The inner diameter of the protective cap 3 matches the outer diameter of the connecting part 22, and the two are detachably connected. The protective cap 3 protects the connecting part 22 from contamination when the needle 4 is not in use. Furthermore, in this embodiment, the outer diameter of the cover portion 21 is larger than the outer diameter of the connecting portion 22. The difference in outer diameter between the cover portion 21 and the connecting portion 22 creates a recess between them, providing a contact platform for the subsequent connection of the protective cover 3. It is understood that this embodiment, by providing a connecting portion 22 for connecting a needle 4 in the eye drop device, combines the traditional eye drop function with the rinsing function. When rinsing the eye is required, the needle 4 is connected, and the medication in the reservoir 111 is used for rinsing, eliminating the need for a separate rinsing device and greatly improving the versatility and efficiency of the device.

[0035] In one embodiment, the top of the cap portion 21 extends downward and is provided with a first inner post 211, the outer diameter of the first inner post 211 being larger than the inner diameter of the bottle mouth portion 12; the inner wall of the cap portion 21 is screwed to the outer wall of the bottle mouth portion 12, and the outer wall of the first inner post 211 is sealed to the inner wall of the bottle mouth portion 12.

[0036] Specifically, the cap portion 21 mainly consists of the cap portion 21 body and a first inner post 211 extending downward from the top of the cap portion 21. The outer diameter of the first inner post 211 is larger than the inner diameter of the bottle mouth portion 12 to form an interference fit, thereby ensuring that the outer wall of the first inner post 211 is in close contact with the inner wall of the bottle mouth portion 12, preventing leakage of eye drops from the connection between the connecting cap 2 and the bottle mouth portion 12. It is understood that the connecting cap 2 is made of an elastic material to ensure that the bottle mouth portion 12 fits smoothly around the first inner post 211 without any gaps allowing liquid to pass through. The inner wall of the cap portion 21 is connected to the outer wall of the bottle mouth portion 12 by a threaded connection. The threaded connection provides a certain amount of friction and tightening force, ensuring that the connecting cap 2 will not easily fall off during use, thus ensuring the overall stability of the device. Users can easily screw the connecting cap 2 onto or remove it from the bottle mouth portion 12, facilitating the assembly and cleaning of the eye drop device, improving the durability and economy of the device. Meanwhile, the first inner post 211 extends downward from the top of the cap 21, and its size and connection with the bottle mouth 12 make the entire eye drop device more compact. This compact design not only reduces the space occupied by the device, making it easier to carry and store, but also makes the device more aesthetically pleasing.

[0037] In one embodiment, the first inner column 211 is provided with a second guide channel 2111, and the second guide channel 2111 is connected to the first guide channel 121.

[0038] Specifically, the first inner column 211 has a hollow structure and is internally designed with a second guide channel 2111. This second guide channel 2111 is interconnected with the first guide channel 121 of the bottle mouth 12, thus forming a continuous channel that starts from the liquid storage chamber 111 of the liquid storage bottle 1, passes through the first guide channel 121 of the bottle mouth 12, and then passes through the second guide channel 2111 within the first inner column 211. This provides an orderly and smooth flow path for the eye drops. The medication flowing out of the liquid storage chamber 111 can travel smoothly along this continuous guide channel, ensuring the continuity of the medication's transmission within the device, avoiding obstruction or leakage during transmission, and helping to accurately guide the medication to the subsequent application site.

[0039] In one embodiment, the connecting part 22 includes a dropper head 221 and an outer post 222. The outer post 222 is arranged around the outside of the dropper head 221. A connecting groove 223 is formed between the dropper head 221 and the outer post 222. The top horizontal plane of the outer post 222 is lower than the top horizontal plane of the dropper head 221. The inner wall of the outer post 222 is provided with threaded threads.

[0040] Specifically, the connecting part 22 consists of a dropper 221 and an outer post 222. The outer post 222 is arranged around the outside of the dropper 221, and the two together constitute the main structure of the connecting part 22. A connecting groove 223 is formed between the dropper 221 and the outer post 222. This connecting groove 223 provides a specific space for subsequent connection of components such as needles 4. Components such as needles 4 can be inserted into the connecting groove 223 and engaged with the inner wall of the outer post 222 to achieve an integrated connection with the eye drop device, thereby realizing the rinsing function. The top horizontal plane of the outer post 222 is lower than the top horizontal plane of the dropper 221. This height difference design makes the dropper 221 relatively protrude in the connecting part 22. On the one hand, it can avoid the outer post 222 from obstructing the dropper 221, ensuring that the liquid can flow out smoothly during use, facilitating the smooth operation of the eye drop function. On the other hand, the design of the outer post 222 surrounding the dropper 221 can protect the dropper 221, preventing it from being accidentally bumped or damaged during use, and extending the service life of the dropper 221. The inner wall of the outer column 222 is provided with threaded grooves. These threads provide a specific connection method for the connecting part 22, allowing for tight connection with other components having corresponding threaded structures, further enhancing the stability and reliability of the connection. Simultaneously, the threaded grooves make the connecting part 22 versatile and expandable, facilitating the connection and disassembly of different types of components according to varying usage requirements in practical applications, thus meeting diverse medical needs.

[0041] In one embodiment, the dripper 221 is provided with a liquid outlet channel 2211 and a liquid collection chamber 2212 from top to bottom, and the liquid outlet channel 2211, the liquid collection chamber 2212 and the liquid storage chamber 111 are connected in sequence.

[0042] Specifically, in this embodiment, the vertical direction from top to bottom is from the connecting cap 2 to the storage bottle 1. The dispensing channel 2211 is directly responsible for guiding liquids such as eye drops or rinsing solutions to the application site. Its specific size and shape design can control the flow rate and volume of the liquid, ensuring that the liquid can drip or flow out at an appropriate speed and volume, improving the accuracy and safety of use. Further, in this embodiment, the dispensing channel 2211 preferably adopts an inverted conical structure, that is, the diameter of the dispensing channel 2211 gradually increases from the inlet to the outlet. This gradually increasing diameter design can reduce the resistance of liquid flow within the dispensing channel 2211. When the liquid flows from the inlet to the outlet of the dispensing channel 2211, the liquid can flow out more smoothly due to the continuously increasing diameter of the dispensing channel 2211, improving the flow rate and volume of the liquid, making the eye drop or rinsing operation more efficient.

[0043] The liquid collection chamber 2212 acts as a transition and buffer. When liquid from the storage chamber 111 flows into the dripper 221, the collection chamber 2212 can temporarily store a certain amount of liquid, providing a stable accumulation space before the liquid flows out. This avoids instability in the liquid flow and ensures that the liquid can continuously flow out through the outlet channel 2211. The sequential connection of the storage chamber 111, the collection chamber 2212, and the outlet channel 2211 ensures smooth flow of liquid from storage to use, without blockage or interruption. Users can easily allow the liquid to flow smoothly from the storage chamber 111 through the dripper 221 by simple operations, such as squeezing the storage bottle 1, without complicated procedures.

[0044] In one embodiment, the needle 4 includes a needle tube 41 and a connector 42. The connector 42 is sleeved on the outer wall of the dropper 221 and snapped into the connecting groove 223 so that the needle tube 41 is connected to the dropper 221.

[0045] Specifically, the syringe 41 is responsible for delivering liquid to achieve the rinsing function. The connector 42 is used to connect to the dropper 221 of the eye drop device. The connector 42 is sleeved on the outer wall of the dropper 221 and can be engaged in the connecting groove 223 formed between the dropper 221 and the outer post 222. This connection method allows the syringe 41 and the dropper 221 to communicate. When the needle 4 is connected to the eye drop device, a rinsing function is added to the device, expanding its original single function of eye drops. Users can choose to directly use the dropper 221 for eye drops or install the needle 4 for rinsing, improving the applicability and practicality of the device. At the same time, this connection method allows the eye drop device to connect to the needle 4 without the need for other complex adapters, simplifying the operation and allowing users to quickly switch between functions in different scenarios.

[0046] In one embodiment, the connector 42 has a snap-fit ​​wall 421 extending outward from the bottom, and the snap-fit ​​wall 421 snaps into the threaded grooves of the inner wall of the outer post 222.

[0047] Specifically, the snap-fit ​​wall 421 and the threaded connection provide an additional fixing point for the connection between the needle 4 and the eye drop device, making the needle 4 more securely connected to the eye drop device during use, less prone to loosening or falling off, and ensuring the stability of liquid delivery. The screw connection between the snap-fit ​​wall 421 and the outer post 222 makes the installation and removal of the needle 4 relatively simple. Users can quickly engage or disengage the snap-fit ​​wall 421 and the threaded connection by rotating or pressing, facilitating the replacement of the needle 4 or cleaning and maintenance when needed. At the same time, the tight snap-fit ​​between the snap-fit ​​wall 421 and the threaded connection can enhance the sealing performance and connection strength of the connection part to a certain extent, reducing the possibility of liquid leakage from the connection part 22, ensuring that the eye drops or irrigation solution can be accurately delivered to the required site through the needle 4. In addition, the threaded connection locks the needle, effectively preventing the needle from falling off during use, improving the safety and effectiveness of use.

[0048] In one embodiment, the outer diameter of the dripper 221 is larger than the inner diameter of the connector 42, so that the outer wall of the dripper 221 and the inner wall of the connector 42 are sealed together.

[0049] Specifically, the dimensional difference between the outer diameter of the dropper 221 and the inner diameter of the connector 42 allows for an interference fit between them. The outer wall of the dropper 221 and the inner wall of the connector 42 fit tightly together, effectively preventing leakage of eye drops or rinsing solution from the connector 22 during delivery. Simultaneously, this interference fit can withstand certain external forces, such as slight pulling or squeezing that may occur during use, ensuring that the connection between the needle 4 and the dropper 221 will not easily loosen or detach.

[0050] Furthermore, in this embodiment, the connecting cover 2 is an integrally molded structure, and the connecting cover 2 is preferably made of an elastic material, so as to ensure the smooth connection and sealing effect of the entire eye drop device during use.

[0051] In one embodiment, the protective cover 3 includes a cap portion 31 and a second inner post 32 disposed on the top of the cap portion 31 and extending downward. The second inner post 32 has a hollow structure, is snapped into the connecting groove 223, and the outer wall of the second inner post 32 is threadedly connected to the inner wall of the outer post 222.

[0052] Specifically, the second inner post 32 inside the protective cover 3 is engaged in the connecting groove 223 formed between the dropper 221 and the outer post 222 in the connecting part 22. This engagement method allows the protective cover 3 to quickly and firmly connect with the connecting part 22, preventing the protective cover 3 from accidentally falling off when not in use. The outer wall of the second inner post 32 is threaded to the inner wall of the outer post 222. The threaded connection provides a more stable connection, ensuring that the protective cover 3 will not easily loosen after installation, further enhancing the connection strength between the protective cover 3 and the connecting part 22. It can be understood that when the eye drop device is not in use, by completely covering the connecting part 22 with the protective cover 3, including key parts such as the dropper 221 and the outer post 222, the hollow structure of the second inner post 32 and the cap part 31 work together to effectively prevent external dust, bacteria and other impurities from entering the connecting part 22, keeping the connecting part 22 clean and avoiding contamination of the eye drops during the next use.

[0053] In one embodiment, the inner diameter of the second inner column 32 is smaller than the outer diameter of the dripper 221, so that the outer wall of the dripper 221 and the inner wall of the second inner column 32 are sealed together.

[0054] Specifically, the dimensional difference between the inner diameter of the second inner post 32 of the protective cover 3 and the outer diameter of the dropper 221 allows for an interference fit between the dropper 221 and the protective cover 3. The outer wall of the dropper 221 fits tightly against the inner wall of the second inner post 32, achieving a sealed connection. It is understood that in this embodiment, the outlet of the dropper 221 is also tightly fitted against the bottom wall of the protective cover 3, further enhancing the sealing effect. When the protective cover 3 is installed on the connecting part 22, the sealed connection between the dropper 221 and the second inner post 32 effectively prevents external impurities from entering the eye drop device, thus maintaining the purity of the eye drops and avoiding contamination that could affect the quality and effectiveness of the medication. Simultaneously, a good sealed connection prevents leakage of the eye drops from the dropper 221 during storage or transport, reducing medication waste and environmental impact.

[0055] It is understood that, in this embodiment, the eye drop device includes three states:

[0056] When administering eye drops, the cap 21 of the connecting cap 2 is tightly connected to the mouth 12 of the storage bottle 1, ensuring the sealing of the storage bottle 1. The eye drops in the storage chamber 111 flow through the first guide channel 121 of the mouth 12 and the second guide channel 2111 of the first inner column 211 of the connecting cap 2 to the dropper 221. The liquid collection chamber 2212 in the dropper 221 collects and buffers the medication, and then the medication is dripped out through the dispensing channel 2211, accurately dripping into the eye to complete the eye drop process. In this state, the protective cap 3 is removed, and the needle 4 is not connected.

[0057] During the rinsing operation, first, the connector 42 of the needle 4 is fitted onto the outer wall of the dropper 221. The snap-fit ​​wall 421 at the bottom of the connector 42 snaps into the threaded grooves on the inner wall of the outer post 222 of the connecting part 22, thus connecting the needle tube 41 to the dropper 221. Squeezing the storage bottle 1 causes the medication in the storage chamber 111 to flow sequentially through the first guide channel 121, the second guide channel 2111, the liquid collection chamber 2212, and the liquid outlet channel 2211, passing through the needle tube 41 and being sprayed from the needle tip to rinse the eye. In this state, the protective cap 3 is removed.

[0058] When not in use, the second inner post 32 of the protective cover 3 is engaged in the connecting groove 223, and the outer wall of the second inner post 32 is threadedly connected to the inner wall of the outer post 222. Simultaneously, the outer wall of the dropper 221 is sealed to the inner wall of the second inner post 32, thus achieving a sealed connection between the protective cover 3 and the connecting cover 2. This connection method effectively prevents dust, bacteria, and other contaminants from entering the connecting part 22 and the dropper 221, protecting the cleanliness of the inside of the eye drop device and preparing it for the next use. In this state, the needle 4 is not connected.

[0059] In this embodiment, the description of the upper and lower positions is based on the position of the eye drop device standing on a horizontal plane, that is, from top to bottom: protective cover 3, connecting cover 2 and liquid storage bottle 1.

[0060] 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 multi-functional eye drop device, characterized by, The utility model provides a bottle for storing eye drops, which comprises a bottle body, a bottle neck, a connecting cap and a protective cap.

2. The multifunctional eye drop device according to claim 1, wherein The top of the cap body extends downward and is provided with a first inner column, and the outer diameter of the first inner column is larger than the inner diameter of the bottle neck.

3. The multi-functional eye drop device according to claim 2, wherein The first inner column is internally provided with a second flow channel, and the second flow channel is communicated with the first flow channel.

4. The multi-functional eye drop device according to claim 1, wherein The connecting part comprises a drop head and an outer column, the outer column is annularly arranged outside the drop head, a connecting groove is formed between the drop head and the outer column, the top of the outer column is lower than the top of the drop head, and the inner wall of the outer column is provided with a screw thread.

5. The multi-functional eye drop device according to claim 4, wherein The drop head is internally sequentially provided from top to bottom with a liquid outlet channel and a liquid collecting cavity, and the liquid outlet channel, the liquid collecting cavity and the liquid storage cavity are sequentially communicated.

6. The multi-functional eye drop device according to claim 4, wherein The needle device comprises a needle tube and a connecting head, the connecting head is sleeved on the outer wall of the drop head and is clamped in the connecting groove, so that the needle tube is communicated with the drop head.

7. The multi-functional eye drop device according to claim 6, wherein The bottom of the connecting head extends outward and is provided with a clamping wall, and the clamping wall is clamped on the screw thread of the inner wall of the outer column.

8. The multi-functional eye drop device according to claim 7, wherein The outer diameter of the drop head is larger than the inner diameter of the connecting head, so that the outer wall of the drop head and the inner wall of the connecting head are sealingly connected.

9. The multi-functional eye drop device according to claim 4, wherein The protective cap comprises a cap part and a second inner column arranged on the top of the cap part and extending downward, the second inner column is a hollow structure, the second inner column is clamped in the connecting groove, and the outer wall of the second inner column is threadedly connected with the inner wall of the outer column.

10. The multi-functional eye drop device according to claim 9, wherein The inner diameter of the second inner column is smaller than the outer diameter of the drop head, so that the outer wall of the drop head and the inner wall of the second inner column are sealingly connected.

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