Anti-pollution eyedrop bottle

Abstract

The utility model belongs to the technical field of medicine packaging, and particularly relates to an anti-pollution eyedrop bottle. Comprising a liquid storage bottle and an inner bottle cap, the inner bottle cap comprises a mounting part, a drip nozzle part and a connecting part connecting the mounting part and the drip nozzle part, a liquid dripping hole is formed in the top end of the drip nozzle part, a liquid outlet valve is arranged in the inner bottle cap and comprises a valve body and a valve rod, the valve rod, the valve body, the connecting part and the drip nozzle part define a pressure cavity, and the valve rod seals the liquid dripping hole in a normal state; a convex column is arranged on the bottom surface of the valve body, a communicated air inlet pipeline is formed in the convex column and the valve body, and a first air inlet communicated with the air inlet pipeline is formed in the side wall of the inner bottle cap; more than one liquid outlet hole communicated with the pressure cavity and the inner cavity of the liquid storage bottle is formed in the valve body; a filter screen is arranged at the air outlet end of the air inlet pipeline; opening and closing of the liquid dropping hole are achieved through deformation of the inner bottle cap, resetting through a spring is not needed, the part structure is simplified, and faults caused by long-term extrusion aging, failure and the like of the spring are avoided.

Description

Technical fields:

[0001] This utility model belongs to the field of pharmaceutical packaging technology, and specifically refers to a pollution-proof eye drop bottle. Background technology:

[0002] In ophthalmological medical care and daily eye care, the design of eye drop bottles is crucial for preventing contamination and ensuring the hygiene of the medication.

[0003] Chinese invention patent (publication number CN 118415813 A, publication date 2024.05.02) discloses a gas-blocking sterile drip bottle for external treatment of residual liquid. After dripping, the conical valve core on the diaphragm valve, under the action of the return spring, can seal the conical dripping orifice in the drip nozzle, preventing external air and residual liquid from entering and contaminating the conical dripping orifice. This patented technology uses a diaphragm valve to open and close the dripping orifice. The diaphragm valve includes a spring groove, a return spring, and a conical valve core, which has a complex structure. Furthermore, long-term pressure or frequent expansion and contraction of the return spring may lead to elastic decay, resulting in poor sealing of the conical valve core. Summary of the Invention:

[0004] The purpose of this invention is to provide a pollution-proof eye drop bottle with a simple structure and long service life.

[0005] This utility model is implemented as follows:

[0006] A pollution-proof eye drop bottle includes a squeeze-deformable storage bottle and an inner cap connected to the opening of the storage bottle. The inner cap includes a mounting part connected to the storage bottle, a nozzle part formed by a narrowing diameter, and a connecting part connecting the two. The nozzle part has a drip hole at its top.

[0007] The inner bottle cap is provided with a liquid outlet valve, which includes a valve body and a valve stem at the upper end. The valve stem, valve body, connecting part and drip nozzle part form a pressure chamber. The valve stem seals the drip hole under normal conditions.

[0008] The bottom surface of the valve body is provided with a downward protruding post, and the post and the interior of the valve body form a connected air intake pipe. The side wall of the inner bottle cap is formed with a first air intake hole that is connected to the air intake pipe.

[0009] The valve body has one or more outlet holes that connect the pressure chamber and the inner cavity of the storage bottle.

[0010] The air intake pipe is equipped with a filter screen at its outlet end. The filter screen is made of a microporous membrane material with a mesh diameter of less than 2 micrometers.

[0011] In the aforementioned anti-pollution eye drop bottle, the air inlet pipe includes a first pipe radially disposed within the valve body and a second pipe axially disposed within the protrusion, the first pipe and the second pipe being perpendicular to each other and connected to each other.

[0012] In the aforementioned anti-pollution eye drop bottle, the filter screen is mounted on the bottom surface of the protruding post via a fixing seat, and the fixing seat is provided with a second air inlet that communicates with the air inlet pipe.

[0013] In the aforementioned anti-pollution eye drop bottle, the fixing base is a cylindrical structure with a closed bottom. An annular protrusion is provided on the inner wall of the cylindrical structure, and the annular protrusion is interference-fitted with the outer cylindrical surface of the protruding post.

[0014] In the aforementioned anti-pollution eye drop bottle, a convex ring is provided on the bottom surface of the convex post, the inner diameter of the convex ring is larger than the diameter of the air inlet pipe, and the filter screen abuts against the convex ring through a fixing seat.

[0015] In the aforementioned anti-pollution eye drop bottle, a sealing cylinder extends downward from the bottom of the valve body, and the outer wall of the sealing cylinder is sealed to the inner wall of the opening end of the storage bottle.

[0016] In the aforementioned anti-pollution eye drop bottle, the nozzle and the connecting part are connected by a conical part, and the nozzle, the connecting part, the conical part, and the mounting part are an integral structure.

[0017] In the aforementioned anti-pollution eye drop bottle, the filter screen is a polytetrafluoroethylene membrane or a polyvinylidene fluoride membrane.

[0018] In the aforementioned anti-pollution eye drop bottle, two dispensing holes are provided.

[0019] The outstanding advantages of this utility model compared to the prior art are:

[0020] 1. This utility model achieves the opening and closing of the drip hole by deforming the inner cap, eliminating the need for spring reset, simplifying the component structure, avoiding malfunctions caused by long-term compression aging and failure of the spring, and extending the service life.

[0021] 2. This invention uses a microporous membrane filter with a mesh size of less than 2 micrometers for filtration, forming a highly efficient physical barrier that effectively inhibits bacteria, resulting in more thorough and longer-lasting filtration. The filter can prevent backflow of the medicine while allowing air to pass through slowly, ensuring air pressure balance and preventing the medicine from contaminating the air passage. Attached image description:

[0022] Figure 1 This is one of the cross-sectional schematic diagrams of the inner bottle cap and the liquid outlet valve after assembly of this utility model;

[0023] Figure 2This is the second cross-sectional schematic diagram of the inner bottle cap and the liquid outlet valve assembled according to this utility model;

[0024] Figure 3 This is a schematic diagram of the inner bottle cap of this utility model;

[0025] Figure 4 This is a schematic diagram of the liquid outlet valve of this utility model.

[0026] 1. Storage bottle; 2. Inner cap; 3. Mounting part; 4. Dropper part; 5. Connecting part; 6. Dropping hole; 7. Dispensing valve; 8. Valve body; 9. Valve stem; 10. Pressure chamber; 11. Protrusion; 12. First air inlet; 13. Dispensing hole; 14. Filter screen; 15. First pipeline; 16. Second pipeline; 17. Fixing base; 18. Second air inlet; 19. Annular protrusion; 20. Sealing cylinder; 21. Conical part. Detailed implementation method:

[0027] The present invention will be further described below with reference to specific embodiments:

[0028] like Figures 1-4 As shown, this utility model provides a pollution-proof eye drop bottle, which includes a squeeze-deformable storage bottle 1 and an inner cap 2 connected to the opening end of the storage bottle 1. The inner cap 2 includes a mounting part 3 connected to the storage bottle 1, a nozzle part 4 formed by a narrowing diameter, and a connecting part 5 connecting the two. The nozzle part 5 is provided with a drip hole 6 at its top. A dispensing valve 7 is provided inside the inner cap 2. The dispensing valve 7 includes a valve body 8 and a valve stem 9 at its upper end. The valve stem 9, valve body 8, connecting part 3, and nozzle part 4 form a pressure chamber 10. The valve stem 9 normally seals the drip hole 6 to prevent the medicine from evaporating or external contaminants from entering. The bottom surface of the valve body 8 is provided with a downwardly protruding post 11, which forms a connected air inlet pipe with the interior of the valve body 8. A first air inlet hole 12 is formed on the side wall of the inner bottle cap 2, connecting the air inlet pipe to the outside. The valve body 8 has one or more outlet holes 13 connecting the pressure chamber 10 to the inner cavity of the liquid storage bottle 1. In this embodiment, there are two outlet holes 13. A filter screen 14 is provided at the air outlet end of the air inlet pipe. The filter screen 14 is made of a microporous membrane material with a mesh diameter of less than 2 micrometers. Specifically, the filter screen 14 is a polytetrafluoroethylene membrane or a polyvinylidene fluoride membrane. It should be noted that, in order to achieve the requirements of deformation, sealing, and compatibility with the liquid, the inner bottle cap 2 of this invention can be made of one or a combination of thermoplastic elastomer material, low-density polyethylene, or silicone rubber, or other materials, depending on the actual situation.

[0029] The working principle of this utility model is as follows:

[0030] When administering eye drops, squeezing the reservoir bottle 1 causes the eye drops inside to enter the pressure chamber 10 through the dispensing hole 13. Within the pressure chamber 10, the eye drops act on the inner cap 2, causing it to deform and resulting in axial displacement of the nozzle 5. Ultimately, the valve stem 9 separates from the dispensing hole 6, allowing the eye drops to be dispensed. The filter screen 14 prevents the eye drops from entering the air intake channel.

[0031] When the storage bottle 1 is restored, no pressure is applied to it, the pressure in the pressure chamber 10 gradually decreases, the inner cap 2 resets, and the valve stem 9 re-seals the drip hole 6. Air enters the inner cavity of the storage bottle 1 from the outside through the first air inlet 12, the air inlet channel, and the filter screen 14, balancing the internal and external pressures until the storage bottle 1 is restored. The filter screen 14 effectively blocks bacteria, dust, and other contaminants from entering the bottle through the air inlet, preventing contamination of the medicine at its source.

[0032] The air inlet channel and liquid outlet path of this utility model are separated, ensuring that air enters the liquid storage bottle 1 only through the filter screen 14 when replenishing air, thus avoiding backflow of medicine into the air inlet channel.

[0033] Furthermore, this invention achieves the opening and closing of the drip hole 6 through the deformation of the inner cap 2, eliminating the need for spring reset, simplifying the component structure, and avoiding malfunctions caused by long-term compression, aging, or failure of the spring. The specific material of the inner cap 2 is selected according to the actual situation.

[0034] like Figure 2 As shown, the intake pipe includes a first pipe 15 radially disposed within the valve body 8 and a second pipe 16 axially disposed within the protrusion 11. The first pipe 15 and the second pipe 16 are perpendicular to each other and connected to each other. The intake pipe of this invention forms an L-shaped baffle, which can increase airflow resistance, causing airborne particles to settle due to inertia, reducing the amount of particles that directly reach the filter screen and cause surface blockage.

[0035] Furthermore, the filter screen 14 is mounted on the bottom surface of the protrusion 11 via a fixing seat 17, and the fixing seat 17 is provided with a second air inlet 18 that communicates with the air inlet pipe.

[0036] In this embodiment, the fixing seat 17 is a cylindrical structure with a closed bottom. An annular protrusion 19 is provided on the inner wall of the cylindrical structure, and the annular protrusion 19 is interference-fitted with the outer cylindrical surface of the protrusion 11.

[0037] In addition, the fixing seat 17 can also be connected to the protrusion 11 by means of a threaded connection.

[0038] This invention also provides a protruding ring on the bottom surface of the protruding post 11. The inner diameter of the protruding ring is larger than the diameter of the air intake pipe. The filter screen 14 abuts against the protruding ring through the fixing seat 17. The annular gap between the protruding ring and the air intake pipe allows the airflow to diffuse evenly along the circumference, avoiding direct impact on the local area of ​​the filter screen, thereby extending the life of the filter screen 14 and optimizing the filtration efficiency.

[0039] like Figure 1 As shown, a sealing cylinder 20 extends downward from the bottom surface of the valve body 8, and the outer wall of the sealing cylinder 20 is sealed to the inner wall of the open end of the liquid storage bottle 1. To facilitate insertion into the open end of the liquid storage bottle 1, in this embodiment, the outer diameter of the lower end of the sealing cylinder 20 gradually decreases.

[0040] To facilitate the triggering of axial displacement of the drip tip 4, the drip tip 4 and the connecting part 3 are connected by a tapered part 21, and the drip tip 4, the connecting part 2, the tapered part 21 and the mounting part 3 are an integral structure.

[0041] The above embodiments are only one of the preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes made in accordance with the shape, structure and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. A pollution-resistant eye drop bottle, comprising a squeeze-deformable storage bottle (1) and an inner cap (2) connected to the open end of the storage bottle (1), characterized in that: The inner bottle cap (2) includes a mounting part (3) connected to the liquid storage bottle (1), a nozzle part (4) formed by a reduced diameter, and a connecting part (5) connecting the two. The nozzle part (4) is provided with a drip hole (6) at the top. The inner bottle cap (2) is provided with a liquid outlet valve (7). The liquid outlet valve (7) includes a valve body (8) and a valve stem (9) at the upper end. The valve stem (9), valve body (8), connecting part (5) and drip nozzle part (4) form a pressure chamber (10). The valve stem (9) seals the drip hole (6) under normal conditions. The bottom surface of the valve body (8) is provided with a downward protruding post (11), and the inside of the post (11) and the valve body (8) form a connected air intake pipe. The side wall of the inner bottle cap (2) forms a first air intake hole (12) connected to the air intake pipe. The valve body (8) has one or more outlet holes (13) that connect the pressure chamber (10) and the inner cavity of the liquid storage bottle (1); The air outlet of the air inlet pipe is provided with a filter screen (14), which is made of a microporous membrane material with a mesh diameter of less than 2 micrometers.

2. The anti-pollution eye drop bottle according to claim 1, characterized in that: The intake pipe includes a first pipe (15) radially disposed within the valve body (8) and a second pipe (16) axially disposed within the protrusion (11). The first pipe (15) and the second pipe (16) are perpendicular to each other and connected to each other.

3. A pollution-resistant eye drop bottle according to claim 1 or 2, characterized in that: The filter screen (14) is installed on the bottom surface of the protrusion (11) via a fixing seat (17), and the fixing seat (17) is provided with a second air inlet (18) that communicates with the air inlet pipe.

4. The anti-pollution eye drop bottle according to claim 3, characterized in that: The fixing seat (17) is a cylindrical structure with a closed bottom. An annular protrusion (19) is provided on the inner wall of the cylindrical structure. The annular protrusion (19) is interference-fitted with the outer cylindrical surface of the protrusion (11).

5. The anti-pollution eye drop bottle according to claim 4, characterized in that: The bottom surface of the protruding post (11) is provided with a protruding ring. The inner diameter of the protruding ring is larger than the diameter of the air intake pipe. The filter screen (14) abuts against the protruding ring through the fixing seat (17).

6. A pollution-resistant eye drop bottle according to claim 1 or 2, characterized in that: A sealing cylinder (20) extends downward from the bottom surface of the valve body (8), and the outer wall of the sealing cylinder (20) is sealed to the inner wall of the opening end of the liquid storage bottle (1).

7. The anti-pollution eye drop bottle according to claim 1, characterized in that: The drip tip (4) and the connecting part (5) are connected by a tapered part (21), and the drip tip (4), the connecting part (5), the tapered part (21) and the mounting part (3) are an integral structure.

8. The anti-pollution eye drop bottle according to claim 1, characterized in that: The filter screen (14) is a polytetrafluoroethylene membrane or a polyvinylidene fluoride membrane.

9. A pollution-proof eye drop bottle according to claim 1, characterized in that: There are two outlet holes (13).

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