Bacteria blocking-type eye drop administration apparatus having sealed one-way valve

Abstract

The present invention relates to the technical field of ocular administration and provides a bacteria blocking-type eye drop administration apparatus having a sealed one-way valve, comprising: a liquid storage bottle; an inner cover, comprising an inner cover cap body portion having an inner cavity, wherein a drip head is arranged at the top of a cap of the inner cover cap body portion; an outer cover, comprising an outer cover cap body portion having an inner cavity, wherein an outer cover blocking structure is arranged at the top of a cap of the outer cover cap body portion; an inner sleeve, comprising an inner sleeve tube body portion, wherein a compartment plate portion is arranged in the inner sleeve tube body portion, and a gas return tube in communication with a gas replenishment hole is arranged on the side of the compartment plate portion facing a bottle body; a liquid outlet valve assembly, comprising a valve body, a sealing bead, and a reset elastic member; and a bacteria-blocking gas replenishment structure, comprising a bacteria-blocking filter assembly and a gas replenishment one-way valve. In the present invention, a gas return tube separated from a liquid outlet channel can be added. A resettable sealing bead ensures that only liquid output is allowed in the liquid outlet channel. The bacteria-blocking gas replenishment structure filters bacteria out of the external air, ensuring that the gas with which the bottle body is replenished is sterile air.

Description

Antibacterial eye drop delivery device with sealed one-way valve Technical Field

[0001] This invention relates to the field of ocular drug delivery technology, and in particular to a bacteriostatic eye drop delivery device with a sealed one-way valve. Background Technology

[0002] An eye drop bottle is a device used to store eye drops. Eye drops refer to a clear solution or suspension of a drug for use in the eyes, used to prevent or diagnose eye diseases. Eye drops are mainly aqueous solutions, with a small amount of aqueous suspension or oil solution. Eye drops are sterile aqueous or oily clear solutions, suspensions, or emulsions made from drugs and suitable excipients for instillation into the eye. Common uses and applications of eye drops: They are broad-spectrum antibiotics, particularly effective against drug-resistant Staphylococcus aureus among Gram-positive bacteria; they are also highly effective against enterocolitis and Pseudomonas aeruginosa among Gram-negative bacteria; they are mainly used to treat bacterial external and internal eye infections, and are used for eye infections caused by Escherichia coli, Pseudomonas aeruginosa, Proteus, Enterobacter aerogenes, and Staphylococcus.

[0003] Currently, ordinary eye drop bottles on the market have simple structures and limited functions. For example, existing patent documents (application numbers: CN202321877660.9 and CN201910434547.5) disclose two types of eye drop bottles, which mainly consist of three parts: an outer cap, an inner stopper, and a bottle body. However, eye drops are sterile solutions made from raw materials and appropriate excipients, and ordinary eye drop bottles can only be used within a limited duration of efficacy once opened. Specifically, ordinary eye drop bottles cannot inhibit or prevent bacteria. After opening, on the one hand, residual medication can easily remain at the end of the inner stopper. In the moist environment of the residual medication, bacteria will quickly grow and directly contaminate the eye drop solution inside the bottle through the open end of the inner stopper. On the other hand, due to poor sealing between the outer cap and the bottle body, air can easily enter the bottle, causing the medication to become contaminated and ineffective due to contact with air.

[0004] Existing eye drop bottles have a serious drawback: the dispensing channel and the venting channel are the same. The current operating process involves pressing the bottle, squeezing out the liquid, stopping the pressing, and finally drawing air back into the bottle to compensate for the space created by the liquid. If the air contains bacteria, and this air is not treated to prevent bacterial contamination, it will inevitably contaminate the eye drops. Furthermore, the commonly used squeeze-type dispensing system in the market fails to prevent external microorganisms from contaminating the medication after opening, and the residual medication at the opening can easily breed bacteria, affecting efficacy and even causing secondary harm to the patient's eyes. To prevent contamination, antibacterial agents are usually added; however, these agents can cause side effects such as conjunctival irritation.

[0005] Summary of the Invention

[0006] In view of the shortcomings of the prior art described above, the technical problem to be solved by the present invention is to provide a bactericidal eye drop delivery device with a sealed one-way valve, which can add a return air pipeline that is separate from the liquid outlet channel, ensure that the liquid outlet channel can only dissipate liquid through a resettable sealing bead, filter out bacteria in the outside air through the bactericidal air replenishment structure, and ensure that the gas replenished into the bottle is sterile air.

[0007] To address the aforementioned technical problems, the present invention provides a bacteriostatic eye drop delivery device with a sealed one-way valve, comprising:

[0008] A liquid storage bottle, comprising a bottle body that can be squeezed by the user, with a bottle opening at the top along its height;

[0009] The inner cap includes an inner cap body with an inner cavity, an air inlet hole penetrating its own side wall, a snap-fit ​​part that seals with the bottle mouth at the cap brim, a dropper head at the cap top, and an inner cap external thread on the outer peripheral wall of the inner cap body. The dropper head includes a dropper boss integrally formed in the inner cap body and a dropper hole provided in the dropper boss.

[0010] The outer cover includes an outer cover cap body with an inner cavity, an outer cover sealing structure for sealing the drip hole is provided at the top of the outer cover cap body, and an outer cover inner thread adapted to the outer thread of the inner cover is provided on the inner peripheral wall of the outer cover cap body.

[0011] The inner sleeve includes an inner sleeve body that is nested in the inner cavity of the inner cap body. One end of the inner sleeve body along its own axis is sealed to the bottle mouth or buckle, and the other end of the inner sleeve body along its own axis is sealed to the top of the cap of the inner cap body. The inner sleeve body is provided with a partition plate, which has a flow hole communicating with the bottle body. The side of the partition plate facing the bottle body is provided with a return gas pipe communicating with the gas inlet.

[0012] The dispensing valve assembly includes a valve body, a sealing bead, and a reset elastic element. The valve body is located on the side of the partition plate facing away from the bottle to form a dispensing channel. The dispensing channel is connected to the flow hole and the drip hole respectively. A releasable sealing contact is formed between the dispensing port of the valve body and the sealing bead. The reset elastic element is located between the sealing bead and the drip protrusion.

[0013] The antibacterial and gas-replenishing structure includes an antibacterial filter component and a gas-replenishing one-way valve. The antibacterial filter component is installed inside the return gas pipeline, and the gas-replenishing one-way valve is located at the gas outlet end of the return gas pipeline.

[0014] When the user removes the outer cap, inverts the bottle, and squeezes the bottle body, the sealing bead separates from the liquid outlet port of the valve body under hydraulic pressure, and the eye drops in the bottle body drip from the drip hole after flowing through the flow hole and the liquid outlet channel in sequence.

[0015] When the user stops squeezing the bottle, the sealing bead seals against the liquid outlet port of the valve body under the elastic force of the reset elastic element, and the bottle returns to its original shape. Outside air flows into the bottle body in sequence through the air inlet, return air pipeline, antibacterial filter assembly and air inlet one-way valve, and finally the sterile air formed by the outside air flows into the bottle body.

[0016] Furthermore, the outer cap sealing structure includes a sealing cavity with a breathing hole, a boss limiting bracket disposed in the sealing cavity, and a plug that can be inserted into the dripping hole. The sealing cavity is integrally formed at the top of the outer cap body, and the boss limiting bracket is used to limit the dripping boss.

[0017] Furthermore, the valve body includes a liquid storage plate and a tubular valve seat. The liquid storage plate is sealed and inverted on the partition plate. The tubular valve seat is sealed and inserted through the middle of the liquid storage plate. The valve cavity of the tubular valve seat is connected to the flow hole. The end of the tubular valve seat facing the drip hole constitutes the liquid outlet port.

[0018] Furthermore, the liquid outlet port is provided with a flared mouth, which has a small diameter end and a large diameter end. The transition joint between the small diameter end and the valve cavity forms a right-angle sealing edge, which undergoes elastic deformation after sealing and abutting with the sealing bead.

[0019] Furthermore, the return air pipeline includes an axial extension and a radial extension perpendicularly connected to the axial extension; the antibacterial filter assembly is disposed within the axial extension, and the air replenishment check valve is sleeved at the end of the axial extension.

[0020] Furthermore, the return gas pipeline also includes a return gas groove portion formed on the outer peripheral wall of the inner sleeve body portion, and the return gas groove portion is connected to the air supply hole and the radial extension portion respectively.

[0021] Furthermore, the dripping boss is provided with a tube portion that is sealed and inserted into the valve body.

[0022] Furthermore, the end of the insertion tube away from the valve body is turned inward to form the drip hole; the reset elastic element is a compression spring, and a part of the compression spring structure is confined between the hole wall of the drip hole and the insertion tube.

[0023] Furthermore, the outer cover also includes a locking ring that is fixedly fitted onto the buckle portion. The locking ring is connected to the outer cover cap portion through an anti-tamper seal portion. The outer cover cap portion has a first wedge block, and the locking ring has a second wedge block. When the user unscrews the outer cover, the first wedge block and the second wedge block form a wedge-shaped sliding relationship.

[0024] Furthermore, the antibacterial filtration assembly includes a sleeve core disposed in the return air pipeline, an antibacterial filter membrane disposed in the sleeve core, and a locking ring that abuts and holds the antibacterial filter membrane in place.

[0025] As described above, the antibacterial eye drop delivery device with a sealed one-way valve of the present invention has the following beneficial effects: In the antibacterial eye drop delivery device with a sealed one-way valve of the present invention, the reservoir bottle is used to store the eye drops, and the reservoir bottle can have various styles. The inner cap is the head delivery structure of the antibacterial eye drop delivery device with a sealed one-way valve. The inner cap is sealed to the mouth of the reservoir bottle through its own snap-fit ​​part to prevent eye drops leakage. The inner cap body is provided with an air inlet hole penetrating its own side wall. With this configuration, outside air can flow into the return air pipeline through the air inlet hole. The outer peripheral wall of the inner cap body is provided with an inner cap external thread, and the inner cap external thread is adapted to the outer cap internal thread. With this configuration, the inner cap and the outer cap can be tightened or loosened together. The drop head includes a drop protrusion integrally formed on the inner cap body and a drop hole provided on the drop protrusion, which facilitates the formation of small droplets of eye drops in the inner cap. The outer cap primarily protects and seals the inner cap, preventing contamination of the eye drops inside. Specifically, the top of the outer cap has a sealing structure to block the dropper hole. When the outer cap is tightened relative to the inner cap to its limit, the sealing structure precisely seals the dropper hole. The inner sleeve is a base component on which multiple parts are mounted. The inner sleeve has one end along its axial direction that seals with the bottle opening or snap fastener to prevent eye drops from seeping between the inner sleeve and the inner cap. The inner sleeve has a partition plate that divides the inner sleeve's cavity into two parts. The partition plate has a flow hole that communicates with the bottle body, allowing eye drops to flow into the outlet channel when the user squeezes the bottle. The partition plate also has a return air pipe on its side facing the bottle body, communicating with the air inlet. This allows outside air to flow into the bottle, filling the space vacated by the eye drops and restoring the bottle to its original shape. The dispensing valve assembly is one of the main innovations of this invention. The valve body is located on the side of the partition plate facing away from the bottle to form a dispensing channel. The dispensing channel is connected to the flow hole and the drip hole respectively. A releasable sealing contact is formed between the dispensing port of the valve body and the sealing bead. A reset elastic element is located between the sealing bead and the drip protrusion. With this design, when the user removes the outer cap, inverts the bottle, and squeezes it, the force exerted by the eye drops inside the valve body on the sealing bead is greater than the force exerted by the reset elastic element on the sealing bead. Under hydraulic pressure, the sealing bead separates from the outlet port of the valve body, and the eye drops inside the bottle flow through the flow hole and outlet channel before dripping from the drip hole. When the user stops squeezing the bottle, the force exerted by the eye drops inside the valve body on the sealing bead is much less than the force exerted by the reset elastic element on the sealing bead. Under the elastic force of the reset elastic element, the sealing bead quickly seals against the outlet port of the valve body. Simultaneously, as the bottle returns to its original shape, outside air flows through the air inlet, return air pipeline, antibacterial filter assembly, and air inlet check valve, ultimately allowing sterile air to flow into the bottle, thus ensuring that the eye drops inside the bottle are not contaminated.Therefore, the antibacterial eye drop delivery device with a sealed one-way valve of the present invention can add a return air line that is separate from the liquid outlet channel. The resetting sealing bead ensures that the liquid outlet channel can only dissipate liquid, and the antibacterial air replenishment structure filters out bacteria in the outside air, ensuring that the gas replenished into the bottle is sterile air. Attached Figure Description

[0026] Figure 1 shows a perspective view of the antibacterial eye drop delivery device with a sealed one-way valve according to the present invention.

[0027] Figure 2 shows a cross-sectional view of the antibacterial eye drop delivery device with a sealed one-way valve according to the present invention.

[0028] Figure 3 shows an exploded view of the antibacterial eye drop delivery device with a sealed one-way valve according to the present invention.

[0029] Figure 4 shows a perspective view of an antibacterial eye drop delivery device with a sealed one-way valve after the outer cover has been removed.

[0030] Figure 5 shows the eye drop status diagram of an antibacterial eye drop delivery device with a sealed one-way valve.

[0031] Figure 6 shows the liquid dispensing status of an antibacterial eye drop delivery device with a sealed one-way valve.

[0032] Figure 7 shows the gas replenishment status of an antibacterial eye drop delivery device with a sealed one-way valve.

[0033] Figure 8 shows the sealed state of an antibacterial eye drop delivery device with a sealed one-way valve.

[0034] Figure 9 shows a partial cross-sectional view of the discharge valve assembly.

[0035] Figure 10 shows a three-dimensional view of the outer cover.

[0036] Figure 11 shows a perspective sectional view of the outer cover.

[0037] Figure 12 shows a three-dimensional sectional view of the inner cover.

[0038] Figure 13 shows a three-dimensional sectional view of the inner sleeve.

[0039] Figure 14 shows a three-dimensional sectional view of the valve body.

[0040] Figure 15 shows a three-dimensional cross-sectional view of the antibacterial filter assembly.

[0041] Figure 16 shows a three-dimensional sectional view of the air replenishment check valve.

[0042] Component labeling: Storage bottle 1, Bottle body 11, Bottle mouth 12, Inner cap 2, Inner cap body 21, Air inlet 22, Clip 23, Dropper head 24, Dropper boss 241, Dropper hole 242, Insertion tube 243, Inner cap external thread 25, Outer cap 3, Outer cap body 31, First wedge block 311, Outer cap sealing structure 32, Sealing cavity 321, Breathing hole 322, Boss limiting bracket 323, Hole plug 324, Outer cap internal thread 33, Locking ring 34, Second wedge block 341, Anti-tamper sealing part 35, Inner sleeve 4 41. Inner sleeve body, 42. Partition plate, 43. Flow hole, 44. Return gas pipeline, 441. Axial extension, 442. Radial extension, 443. Return gas groove, 5. Liquid outlet valve assembly, 51. Valve body, 511. Liquid outlet port, 512. Liquid storage plate, 513. Tubular valve seat, 514. Flared mouth, 515. Right angle sealing edge, 52. Sealing bead, 53. Reset elastic element, 54. Liquid outlet channel, 6. Antibacterial gas supply structure, 61. Antibacterial filter assembly, 611. Sleeve core, 612. Antibacterial filter membrane, 613. Locking ring, 62. Gas supply check valve. Detailed Implementation

[0043] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0044] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings of this specification are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of the invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0045] As shown in Figures 1 to 9, the present invention provides a bactericidal eye drop delivery device with a sealed one-way valve, comprising:

[0046] The liquid storage bottle 1 (see Figures 2 and 3 for details) includes a bottle body 11 that can be squeezed by the user, and a bottle mouth 12 is provided at the top of the bottle body 11 along its height direction.

[0047] The inner cap 2 (see Figures 4, 5 and 12 for details) includes an inner cap body 21 with an inner cavity. The inner cap body 21 is provided with an air filling hole 22 that penetrates its own side wall. The cap edge of the inner cap body 21 is provided with a buckle part 23 that seals with the bottle mouth 12. The top of the cap of the inner cap body 21 is provided with a drip head 24. The outer peripheral wall of the inner cap body 21 is provided with an inner cap external thread 25. The drip head 24 includes a drip protrusion 241 integrally formed in the inner cap body 21 and a drip hole 242 provided in the drip protrusion 241.

[0048] The outer cover 3 (see Figures 2, 10 and 11 for details) includes an outer cover cap body 31 with an inner cavity. The top of the outer cover cap body 31 is provided with an outer cover sealing structure 32 for sealing the drip hole 242. The inner peripheral wall of the outer cover cap body 31 is provided with an outer cover inner thread 33 that is adapted to the inner cover outer thread 25.

[0049] The inner sleeve 4 (see Figures 6, 7 and 13 for details) includes an inner sleeve body 41, which is nested in the inner cavity of the inner cap body 21. One end of the inner sleeve body 41 along its own axis is sealed to the bottle mouth 12 or the snap fastener 23, and the other end of the inner sleeve body 41 along its own axis is sealed to the top of the cap of the inner cap body 21. The inner sleeve body 41 is provided with a partition plate 42, and the partition plate 42 is provided with a flow hole 43 communicating with the bottle body 11. The side of the partition plate 42 facing the bottle body 11 is provided with a return gas pipe 44 communicating with the gas replenishment hole 22.

[0050] The dispensing valve assembly 5 (see Figures 8, 9 and 14 for details) includes a valve body 51, a sealing bead 52 and a reset elastic member 53. The valve body 51 is located on the side of the partition plate portion 42 facing away from the bottle body 11 to form a dispensing channel 54. The dispensing channel 54 is connected to the flow hole 43 and the drip hole 242 respectively. A releasable sealing contact relationship is formed between the dispensing port 511 of the valve body 51 and the sealing bead 52. The reset elastic member 53 is located between the sealing bead 52 and the drip protrusion portion 241.

[0051] The antibacterial and gas-replenishing structure 6 (see Figures 6, 7, 15 and 16 for details) includes an antibacterial filter component 61 and a gas-replenishing one-way valve 62. The antibacterial filter component 61 is installed in the return gas pipeline 44, and the gas-replenishing one-way valve 62 is located at the outlet end of the return gas pipeline 44.

[0052] As shown in Figure 6, when the user removes the outer cover 3 and inverts and squeezes the bottle body 11, the sealing bead 52 separates from the liquid outlet port 511 of the valve body 51 under hydraulic action, and the eye drops in the bottle body 11 drip from the drip hole 242 after flowing through the flow hole 43 and the liquid outlet channel 54 in sequence.

[0053] As shown in Figure 7, when the user stops squeezing the bottle body 11, the sealing bead 52 seals against the liquid outlet port 511 of the valve body 51 under the elastic force of the reset elastic element 53, and the bottle body 11 returns to its original shape. Outside air flows into the bottle body 11 in sequence through the air replenishment hole 22, the air return pipe 44, the antibacterial filter component 61, and the air replenishment one-way valve 62. Finally, the sterile air formed by the outside air flows into the bottle body 11.

[0054] In the antibacterial eye drop delivery device with a sealed one-way valve of the present invention, the reservoir bottle 1 is used to store the eye drops. The reservoir bottle 1 can have various styles. For example, the reservoir bottle 1 can be a snap-lock eye drop bottle with a volume of 5 ml. The inner cap 2 is the head delivery structure of a bactericidal eye drop delivery device with a sealing one-way valve. The inner cap 2 is sealed to the bottle mouth 12 of the storage bottle 1 through its own snap-fit ​​part 23 to prevent eye drop leakage. The inner cap body 21 is provided with an air inlet 22 that penetrates its own side wall. With this setting, outside air can flow into the return air pipe 44 through the air inlet 22. The outer peripheral wall of the inner cap body 21 is provided with an inner cap external thread 25, and the inner cap external thread 25 is adapted to the outer cap internal thread 33 of the outer cap 3. With this setting, the inner cap 2 and the outer cap 3 can be tightened or loosened. The drop head 24 includes a drop protrusion 241 integrally formed in the inner cap body 21 and a drop hole 242 provided in the drop protrusion 241, which facilitates the formation of small droplets of eye drops in the inner cap 2. The outer cover 3 primarily protects and seals the inner cover 2, preventing contamination of the eye drops inside. Specifically, the top of the outer cover cap 31 has an outer cover sealing structure 32 for sealing the drop hole 242. When the outer cover 3 is tightened relative to the inner cover 2 to its limit position, the outer cover sealing structure 32 precisely seals and blocks the drop hole 242. The inner sleeve 4 is a base component, on which multiple parts are mounted. The inner sleeve body 41 of the inner sleeve 4 is sealed to the bottle mouth 12 or the snap fastener 23 at one end along its own axis, thus preventing the eye drops in the storage bottle 1 from seeping into the space between the inner sleeve 4 and the inner cap 2. The inner sleeve body 41 is provided with a partition plate 42, which divides the cavity of the inner sleeve body 41 into two parts. The partition plate 42 is provided with a flow hole 43 that communicates with the bottle body 11. With this configuration, when the user squeezes the bottle body 11, the eye drops in the bottle body 11 can flow into the liquid outlet channel 54 through the flow hole 43. The side of the partition plate 42 facing the bottle body 11 is provided with a return air pipe 44 that communicates with the air replenishment hole 22. With this configuration, outside air can flow into the bottle body 11 through the return air pipe 44 to fill the space freed up by the eye drops dripping out, so that the bottle body 11 returns to its original shape. The dispensing valve assembly 5 is one of the main innovations of this invention. The valve body 51 is located on the side of the partition plate portion 42 facing away from the bottle body 11 to form a dispensing channel 54. The dispensing channel 54 is connected to the flow hole 43 and the drip hole 242 respectively. A releasable sealing contact relationship is formed between the dispensing port 511 of the valve body 51 and the sealing bead 52. The reset elastic member 53 is located between the sealing bead 52 and the drip protrusion portion 241.With this configuration, when the user removes the outer cap 3, inverts the bottle 11, and squeezes it, the force exerted by the eye drops inside the valve body 51 on the sealing bead 52 is greater than the force exerted by the reset elastic element 53 on the sealing bead 52. Under hydraulic pressure, the sealing bead 52 separates from the outlet port 511 of the valve body 51, and the eye drops inside the bottle 11 drip from the drip hole 242 after flowing through the flow hole 43 and the outlet channel 54. When the user stops squeezing the bottle 11, the force exerted by the eye drops inside the valve body 51 on the sealing bead 52 is greater than the force exerted by the reset elastic element 53 on the sealing bead 52. The force exerted by the sealing bead 52 is much smaller than the force exerted by the reset elastic element 53 on the sealing bead 52. Under the elastic force of the reset elastic element 53, the sealing bead 52 quickly seals and abuts against the liquid outlet port 511 of the valve body 51. At the same time, as the bottle body 11 returns to its original shape, outside air passes through the air replenishment hole 22, the return air pipeline 44, the antibacterial filter assembly 61, and the air replenishment one-way valve 62 in sequence, and finally sterile air flows into the bottle body 11, thereby ensuring that the eye drops in the bottle body 11 are not contaminated.

[0055] Therefore, the antibacterial eye drop delivery device with a sealed one-way valve of the present invention can add a return air line that is separate from the liquid outlet channel. The resettable sealing bead 52 ensures that the liquid outlet channel can only dissipate liquid, and the antibacterial air replenishment structure 6 filters out bacteria in the outside air, ensuring that the gas replenished into the bottle body 11 is sterile air.

[0056] In Figure 6, the red arrow indicates the dispensing trajectory of the eye drops. Under normal conditions, the sealing bead 52 is sealed against the dispensing port 511 of the valve body 51 by the action of the reset elastic element 53. The opening action of the sealing bead 52 is achieved by pressing the bottle body 11 to generate pressure inside the bottle. When the force of the eye drops inside the valve body 51 on the sealing bead 52 is greater than the force of the reset elastic element 53 on the sealing bead 52, the reset elastic element 53 contracts, the sealing bead 52 moves downward, and the sealing bead 52 no longer seals against the dispensing port 511, thereby allowing the eye drops to drip from the drip hole 242, bypassing the sealing bead 52.

[0057] In Figure 7, the purple dashed line indicates the air replenishment trajectory. When the dispensing action is complete, the user stops squeezing the bottle body 11, and the sealing bead quickly returns to its original position, sealing against the dispensing port 511, thus re-establishing a seal between the sealing bead and the valve body 51. As the bottle body 11 gradually returns to its original shape, outside air is sterilized by the antibacterial filter component 61, forming sterile air that replenishes the space created by dispensing the eye drops.

[0058] Furthermore, as shown in Figures 10 and 11, to facilitate the user's unscrewing or tightening of the outer cover 3, the outer cover sealing structure 32 includes a sealing cavity 321 with a vent 322, a boss limiting bracket 323 disposed within the sealing cavity 321, and a plug portion 324 into which the dripping hole 242 can be inserted. The sealing cavity 321 is integrally formed at the top of the outer cover cap 31, and the boss limiting bracket 323 is used to limit the dripping boss portion 241. In use, when the user unscrews the outer cover 3, outside air flows into the sealing cavity 321 and the outer cover cap 31 through the vent 322, preventing negative pressure from forming inside the outer cover cap 31. When the user needs to put the outer cover 3 back on the inner cover 2, the air in the inner cavity of the outer cover cap 31 will also be discharged through the vent 322.

[0059] Furthermore, as shown in Figures 8 and 14, in order to simplify the structure of the valve body 51, the valve body 51 includes a liquid storage plate portion 512 and a tubular valve seat portion 513. The liquid storage plate portion 512 is sealed and inverted on the partition plate portion 42, and the tubular valve seat portion 513 is sealed and inserted through the middle of the liquid storage plate portion 512. The valve cavity of the tubular valve seat portion 513 is connected to the flow hole 43, and the end of the tubular valve seat portion 513 facing the drip hole 242 constitutes the liquid outlet port 511.

[0060] Furthermore, as shown in Figures 8 and 9, the outlet port 511 is provided with a flared opening 514, which has a small-diameter end and a large-diameter end. The transition between the small-diameter end and the valve cavity forms a right-angle sealing edge 515. The right-angle sealing edge 515 undergoes elastic deformation after sealing and abutting with the sealing bead 52. The flared opening 514 guides and limits the sealing bead 52, allowing the sealing bead 52 to be squeezed more accurately toward the outlet port 511, thereby improving the sealing performance. The valve body 51 needs to use an elastic material to ensure sealing reliability. The sealing bead 52 can be a steel ball. After being elastically acted upon by the reset elastic element 53, the steel ball comes into contact with the right-angle sealing edge 515 made of elastic material. Due to the small contact area between the two, a high pressure is generated, and the deformation of the right-angle sealing edge 515 is large, resulting in higher sealing reliability. The projected area of ​​the contact surface between the steel ball and the valve body along the axial direction of the outlet port 511 needs to be more than 1 square millimeter, and the shape of this projected area is a small ring.

[0061] Furthermore, as shown in Figure 7, in order to simplify the structure of the return air pipeline 44 and facilitate the disassembly and assembly of the antibacterial filter assembly 61 and the air replenishment check valve 62, the return air pipeline 44 includes an axial extension 441 and a radial extension 442 that is perpendicularly connected to the axial extension 441; the antibacterial filter assembly 61 is disposed in the axial extension 441, and the air replenishment check valve 62 is sleeved on the end of the axial extension 441.

[0062] Furthermore, as shown in Figure 13, in order to improve the smoothness of air replenishment, the air return pipeline 44 also includes an air return groove 443 formed on the outer peripheral wall of the inner sleeve body 41, and the air return groove 443 is connected to the air replenishment hole 22 and the radial extension 442 respectively.

[0063] Furthermore, in order to facilitate the assembly of the inner cover 2 and the valve body 51, the dripping boss 241 is provided with a tube portion 243 that is sealed and inserted into the valve body 51.

[0064] Furthermore, as shown in Figure 7, to facilitate the limiting and resetting elastic element 53, the end of the insertion tube 243 away from the valve body 51 is turned inward to form the dripping hole 242; the resetting elastic element 53 is a compression spring, and a part of the compression spring structure is confined between the hole wall of the dripping hole 242 and the insertion tube 243. In a specific implementation, the compression spring applies a pressure of 0.07 to 0.13 Newtons to the sealing bead, and the sealing bead forms a sealing relationship with the valve body.

[0065] Furthermore, to prevent the user from opening the outer cover 3 and to facilitate the user's observation of whether the outer cover 3 has been opened by others, the outer cover 3 also includes a locking ring 34 fixedly fitted onto the buckle portion 23. The locking ring 34 is connected to the outer cover cap portion 31 via an anti-tamper seal portion 35. The outer cover cap portion 31 has a first wedge block 311, and the locking ring 34 has a second wedge block 341. When the user unscrews the outer cover 3, a wedge-shaped sliding relationship is formed between the first wedge block 311 and the second wedge block 341. As the user gradually unscrews the outer cover 3, a wedge-shaped sliding relationship is formed between the first wedge block 311 and the second wedge block 341, the distance between the outer cover cap portion 31 and the locking ring 34 increases, and the anti-tamper seal portion 35 is pulled off.

[0066] Furthermore, as shown in Figure 15, in order to simplify the structure of the antibacterial filter assembly 61, the antibacterial filter assembly 61 includes a sleeve core 611 disposed in the return air pipeline 44, an antibacterial filter membrane 612 disposed in the sleeve core 611, and a locking ring 613 that abuts and holds the antibacterial filter membrane 612.

[0067] In summary, this invention adds a separate return air pipeline from the liquid outlet channel. A resettable sealing bead ensures that the liquid outlet channel only discharges liquid, and the antibacterial gas replenishment structure filters out bacteria from the outside air, ensuring that the gas supplied to the bottle is sterile air. Therefore, this invention effectively overcomes the various shortcomings of existing technologies and has high industrial application value.

[0068] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A bacteria-proof eye drop administering device having a sealed one-way valve, characterized by, The utility model relates to a liquid medicine bottle, which comprises a bottle body (11) that can be squeezed by a user, a bottle mouth (12) provided at the top of the bottle body (11) along the height direction of the bottle body (11), an inner cap (2) provided on the bottle mouth (12), an outer cap (3) provided on the inner cap (2), an inner sleeve (4) provided in the inner cap (2), a liquid outlet valve assembly (5) provided in the inner sleeve (4), and a bacteria blocking and air supplementing structure (6) provided in the inner sleeve (4). The inner cap (2) comprises an inner cap body (21) having an inner cavity, an air supplementing hole (22) penetrating through the side wall of the inner cap body (21), a buckle part (23) provided at the brim of the inner cap body (21) and sealingly matched with the bottle mouth (12), a liquid dropping head (24) provided at the top of the inner cap body (21), and an inner cap outer thread (25) provided on the outer peripheral wall of the inner cap body (21). The liquid dropping head (24) comprises a liquid dropping boss part (241) integrally formed on the inner cap body (21) and a liquid dropping hole (242) provided on the liquid dropping boss part (241). The outer cap (3) comprises an outer cap body (31) having an inner cavity, an outer cap plugging structure (32) provided at the top of the outer cap body (31) and used for plugging the liquid dropping hole (242), and an outer cap inner thread (33) provided on the inner peripheral wall of the outer cap body (31) and matched with the inner cap outer thread (25). The inner sleeve (4) comprises an inner sleeve body (41) embedded in the inner cavity of the inner cap body (21), the inner sleeve body (41) being sealingly matched with the bottle mouth (12) or the buckle part (23) at one end along the axial direction of the inner sleeve body (41), the inner sleeve body (41) being sealingly matched with the top of the inner cap body (21) at the other end along the axial direction of the inner sleeve body (41), and a partition plate part (42) provided in the inner sleeve body (41). The liquid outlet valve assembly (5) comprises a valve body (51), a sealing bead (52), and a reset elastic member (53), the valve body (51) being provided on the side of the partition plate part (42) away from the bottle body (11) to form a liquid outlet channel (54), the liquid outlet channel (54) being communicated with the overflow hole (43) and the liquid dropping hole (242), respectively, a releasable sealing abutting relationship being formed between the liquid outlet port (511) of the valve body (51) and the sealing bead (52), and the reset elastic member (53) being provided between the sealing bead (52) and the liquid dropping boss part (241). The bacteria blocking and air supplementing structure (6) comprises a bacteria blocking filter assembly (61) and an air supplementing one-way valve (62), the bacteria blocking filter assembly (61) being provided in the air return pipeline (44), and the air supplementing one-way valve (62) being provided at the air outlet end of the air return pipeline (44). When the user removes the outer cap (3), inverts the bottle body (11), and squeezes the bottle body (11), the sealing bead (52) is separated from the liquid outlet port (511) of the valve body (51) under the action of liquid pressure, and the eye medicine in the bottle body (11) flows through the overflow hole (43) and the liquid outlet channel (54) in sequence and then drops from the liquid dropping hole (242). When the user no longer squeezes the bottle body (11), the sealing bead (52) is sealed against the liquid outlet port (511) of the valve body (51) under the elastic force of the reset elastic member (53), the bottle body (11) returns to the original shape, and the external air flows into the bottle body (11) through the air supplementing hole (22), the air return pipeline (44), the bacteria blocking filter assembly (61), and the air supplementing one-way valve (62) in sequence. The outer cover plugging structure (32) includes a plugging cavity portion (321) provided with a breathing hole (322), a boss limiting frame (323) arranged in the plugging cavity portion (321), and a hole plug portion (324) which can be inserted into the liquid drop hole (242).

2. The bacteria blocking eyedrop dispenser with a sealed check valve according to claim 1, wherein: The valve body (51) includes a liquid storage disc body portion (512) and a tubular valve seat portion (513), the liquid storage disc body portion (512) is sealingly inverted into the partition cavity plate portion (42), the tubular valve seat portion (513) is sealingly arranged at the middle of the liquid storage disc body portion (512), the valve cavity of the tubular valve seat portion (513) is communicated with the overflow hole (43), and one end of the tubular valve seat portion (513) towards the liquid drop hole (242) constitutes the liquid outlet port (511).

3. The bacteria blocking eye drop dispenser device with a sealed check valve according to claim 1, wherein: The liquid outlet port (511) is provided with a flared mouth (514) having a small-diameter end and a large-diameter end, and a right-angle sealing edge (515) is formed at the transition between the small-diameter end and the valve cavity, which is elastically deformed after being sealed against the sealing bead (52).

4. The bacteria blocking eyedrop dispenser with a sealed check valve according to claim 3, wherein: The air return pipeline (44) includes an axial extension portion (441) and a radial extension portion (442) vertically communicated with the axial extension portion (441); the bacteria blocking filter assembly (61) is arranged in the axial extension portion (441), and the air supplementing one-way valve (62) is sleeved on the end of the axial extension portion (441).

5. The bacteria blocking eyedrop dispenser with a sealed check valve according to claim 1, wherein: The air return pipeline (44) further includes an air return groove portion (443) opened in the outer peripheral wall of the inner sleeve body portion (41), and the air return groove portion (443) is respectively communicated with the air supplementing hole (22) and the radial extension portion (442).

6. The bacteria blocking eyedrop dispenser with a sealed check valve according to claim 5, wherein: The liquid drop boss portion (241) is provided with a spout portion (243) which is sealingly inserted into the valve body (51).

7. The bacteria blocking eyedrop dispenser with a sealed check valve according to claim 1, wherein: The end of the spout portion (243) away from the valve body (51) is inwardly turned to form the liquid drop hole (242); the reset elastic member (53) is a compression spring, and a part of the structure of the compression spring is limited between the hole wall of the liquid drop hole (242) and the spout portion (243).

8. The bacteria blocking eyedrop dispenser with a sealed check valve according to claim 7, wherein: The outer cover (3) further includes a locking ring (34) which is fixedly sleeved on the buckle portion (23), the locking ring (34) is connected to the outer cover cap body portion (31) through an anti-tampering portion (35), the outer cover cap body portion (31) has a first wedge-shaped block (311), the locking ring (34) has a second wedge-shaped block (341), and the first wedge-shaped block (311) and the second wedge-shaped block (341) form a wedge-shaped sliding relationship when the user unscrews the outer cover (3).

9. The bacteria blocking eyedrop dispenser with a sealed check valve according to claim 1, wherein: ​ 10. The bacteria blocking eyedrop dispenser with a sealed check valve according to claim 1, wherein: The bacteria blocking filter assembly (61) comprises a sleeve core (611) arranged in the air return pipeline (44), a bacteria blocking filter membrane (612) arranged in the sleeve core (611), and a clamping ring (613) abutting and clamping the bacteria blocking filter membrane (612).

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