An eye drop bottle

Abstract

The utility model belongs to the technical field of medicine packaging, especially an eye drop bottle, a liquid outlet channel is arranged on the top of the inner bottle cap, a liquid outlet valve piece for controlling the opening and closing of the liquid outlet channel is arranged on the upper end of the mounting base, a liquid outlet cavity is formed between the liquid outlet valve piece and the top of the inner bottle cap, a liquid medicine channel for connecting the inner cavity of the liquid storage bottle and the liquid outlet cavity is arranged on the mounting base, a partition plate is further arranged in the mounting base to divide the mounting base into an upper cavity and a lower cavity, the upper cavity is connected with the inner cavity of the liquid storage bottle through an air channel connected with the outside, a filter screen mounting base is arranged on the partition plate, a first air hole for connecting the upper cavity and the lower cavity is arranged on the filter screen mounting base, a filter screen is arranged on the filter screen mounting base and covers the first air hole, and the filter screen is made of a microporous membrane material with a mesh diameter less than 2 microns; the utility model adopts a microporous membrane filter screen with a mesh less than 2 microns to filter, forms an efficient physical barrier, effectively blocks bacteria, and filters more completely and durably.

Description

Technical fields:

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

[0002] Chinese utility model patent (publication number CN 219630139 U, publication date 2023.09.05) discloses an eye drop bottle. This eye drop bottle includes a squeeze-deformable reservoir bottle and an inner cap connected to the upper end of the reservoir bottle, forming a cavity with it. The upper end of the inner cap has a dispensing channel communicating with the cavity. A dispensing valve for sealing and opening the dispensing channel is located within the cavity near the dispensing channel. The dispensing valve includes an elastic valve for sealing and opening the dispensing channel and a mounting seat for mounting the elastic valve. The mounting seat has a partition dividing it into an upper chamber and a lower chamber. The lower end of the lower chamber communicates with the inside of the reservoir bottle. The chamber has an air inlet 1 on the partition plate that connects the upper and lower chambers, an air inlet 2 on the inner cap, and an air inlet 3 on the side wall of the mounting base that connects the air inlet 2 and the upper chamber. The mounting base has an air valve that blocks and opens the air inlet 1. When the storage bottle is squeezed, the liquid outlet valve opens the liquid outlet channel to release liquid, and the air valve blocks the air inlet 1, disconnecting the upper and lower chambers. When the storage bottle is released, the liquid outlet valve blocks the liquid outlet channel, and the air valve opens the air inlet 1, connecting the upper and lower chambers.

[0003] The aforementioned eye drop bottle achieves the effect of sealing the air inlet when squeezed and opening the air inlet when restored by moving the air valve within the mounting base. Relying solely on the physical barrier of the tortuous path, its filtering effect on microorganisms (such as bacteria and fungi) is limited. Summary of the Invention:

[0004] The purpose of this invention is to provide an eye drop bottle that uses a microporous membrane filter with a mesh size of less than 2 micrometers for filtration, forming a highly efficient physical barrier and effectively preventing bacteria.

[0005] This utility model is implemented as follows:

[0006] An eye drop bottle includes a storage bottle and an inner cap connected to the upper end of the storage bottle. A dispensing channel is provided at the top of the inner cap, and a mounting base is provided inside the inner cap. A dispensing valve is provided at the upper end of the mounting base to control the opening and closing of the dispensing channel. A dispensing cavity is formed between the dispensing valve and the top of the inner cap. A medication channel communicating between the inner cavity of the storage bottle and the dispensing cavity is provided on the mounting base. A partition plate is also provided inside the mounting base to divide the interior into an upper cavity and a lower cavity. The lower cavity communicates with the inner cavity of the storage bottle, and the upper cavity communicates with the inner cavity of the storage bottle through an air channel connecting to the outside. A filter mounting base is provided on the partition plate. The filter mounting base has a first air hole communicating between the upper cavity and the lower cavity. The filter is mounted on the filter mounting base and covers the first air hole. The filter is made of a microporous membrane material with a mesh diameter of less than 2 micrometers.

[0007] In the aforementioned eye drop bottle, the filter screen is disposed on the bottom surface of the filter screen mounting base, and the fixing base is fitted onto the filter screen mounting base to limit the filter screen between the bottom surface of the filter screen mounting base and the inner bottom of the fixing base.

[0008] In the aforementioned eye drop bottle, the filter mounting base is a protruding post that protrudes downward from the partition plate, a groove is provided downward from the upper plane of the partition plate, and a boss is formed with the bottom of the groove protruding upward. The first air hole is provided through the boss and the protruding post.

[0009] In one of the aforementioned eye drop bottles, the fixing base includes a base plate and a cylindrical body extending upward along the edge of the base plate. The cylindrical body is tightly fitted or threadedly connected to the protrusion.

[0010] In one of the aforementioned eye drop bottles, the filter screen is a polytetrafluoroethylene membrane or a polyvinylidene fluoride membrane.

[0011] In the aforementioned eye drop bottle, the liquid channel includes an inlet chamber located on the mounting base, above the partition plate, and independent of the upper cavity. The inlet chamber is connected to the inner cavity of the storage bottle through the lower cavity. A first liquid channel is provided on the side wall of the inlet chamber. A liquid passage gap is formed between the mounting base and the inner bottle cap. The liquid passage gap channel is connected to the outlet chamber through an outlet valve plate.

[0012] In the aforementioned eye drop bottle, the dispensing valve includes an elastic sheet with a sealing cap on the upper end of the mounting base and a plug located centrally on the elastic sheet to control the opening and closing of the dispensing channel. The outer ring of the upper surface of the elastic sheet is provided with an annular ring, and a plurality of first liquid passage grooves are distributed at intervals on the annular ring. A plurality of fan-shaped protrusions are distributed circumferentially on the elastic sheet between the annular ring and the plug. An annular groove is formed between the fan-shaped protrusions and the annular ring, and a second liquid passage groove is formed between adjacent fan-shaped protrusions. The first liquid passage grooves and the second liquid passage grooves are staggered and interconnected through the annular grooves.

[0013] In the aforementioned eye drop bottle, the air channel includes a second air hole located on the side wall of the inner bottle cap and penetrating the side wall, a third air hole penetrating the inner and outer side walls of the mounting base, and an air passage gap formed between the inner bottle cap and the mounting base. Air enters from the second air hole, passes through the air passage gap, the third air hole, and the first air hole into the liquid storage bottle.

[0014] In one of the aforementioned eye drop bottles, the third vent is non-radially disposed on the mounting base.

[0015] In the aforementioned eye drop bottle, the top of the inner bottle cap is provided with a dropper nozzle, and the liquid outlet channel is provided on the dropper nozzle. The inner bottle cap is covered by an outer bottle cap, and the top of the outer bottle cap is provided with a cover, which covers the dropper nozzle.

[0016] The outstanding advantages of this utility model compared to the prior art are:

[0017] This invention employs a microporous membrane filter with pores smaller than 2 micrometers for filtration, forming a highly efficient physical barrier that effectively inhibits bacteria, resulting in more thorough and long-lasting filtration. The filter prevents backflow of the medication while allowing air to pass through slowly, ensuring air pressure balance and preventing medication from contaminating the air passage. Attached image description:

[0018] Figure 1 This is a top view of the present invention;

[0019] Figure 2 yes Figure 1 AA section view;

[0020] Figure 3 yes Figure 1 BB section view;

[0021] Figure 4 This is a top view of the outer bottle cap of this utility model after it has been disassembled;

[0022] Figure 5 yes Figure 4 CC section view;

[0023] Figure 6 This is a three-dimensional schematic diagram of the outer bottle cap of this utility model after disassembly;

[0024] Figure 7 This is a schematic diagram of the mounting base of this utility model;

[0025] Figure 8 This is a schematic diagram of the liquid outlet valve plate of this utility model.

[0026] In the diagram: 1. Storage bottle; 2. Inner cap; 3. Discharge channel; 4. Mounting base; 5. Discharge valve plate; 6. Discharge chamber; 7. Divider plate; 8. Upper chamber; 9. Lower chamber; 10. Filter screen mounting base; 11. First vent; 12. Filter screen; 13. Fixing base; 14. Inlet chamber; 15. First liquid channel; 16. Liquid passage gap; 17. Elastic sheet; 18. Plug; 19. Annular ring; 20. First liquid passage groove; 21. Fan-shaped protrusion; 22. Annular groove; 23. Second liquid passage groove; 24. Second vent; 25. Third vent; 26. Air passage gap; 27. Outer cap; 28. Dropper; 29. ​​Cover; 30. Mounting part; 31. Annular slot. Detailed implementation method:

[0027] The present invention will be further described below with reference to specific embodiments. See also: Figure 1 —8:

[0028] This utility model provides an eye drop bottle, which includes a storage bottle 1 and an inner cap 2 connected to the upper end of the storage bottle 1. A dispensing channel 3 is provided at the top of the inner cap 2. The dispensing channel 3 is conical, with the lower diameter smaller than the upper diameter, facilitating the dispensing of the eye drop. The lower end of the inner cap 2 has a forked portion, within which an annular groove is formed. The mouth of the storage bottle 1 is inserted into the annular groove and engaged with one side wall of the groove. A mounting base 4 is provided inside the inner cap 2, with its lower end engaged with the inner wall of the bottle mouth. The upper end of the mounting base 4 is provided with a liquid outlet valve 5 for controlling the opening and closing of the liquid outlet channel 3. A liquid outlet cavity 6 is formed between the liquid outlet valve 5 and the top of the inner bottle cap 2. The mounting base 4 is also provided with a liquid channel connecting the inner cavity of the storage bottle 1 and the liquid outlet cavity 6. The mounting base 4 is also provided with a partition plate 7 to divide the interior of the mounting base 4 into an upper cavity 8 and a lower cavity 9. The lower cavity 9 is connected to the inner cavity of the storage bottle 1. The upper cavity 8 is connected to the inner cavity of the storage bottle 1 through an air channel connecting to the outside. A filter screen mounting base 10 is provided on the partition plate 7. The filter screen mounting base 10 is provided with a first air hole 11 connecting the upper cavity 8 and the lower cavity 9. The filter screen 12 is placed on the filter screen mounting base 10 and covers the first air hole 11. The filter screen 12 is made of a microporous membrane material with a mesh diameter of less than 2 micrometers. Specifically, the filter screen is a polytetrafluoroethylene membrane or a polyvinylidene fluoride membrane.

[0029] This invention uses a microporous membrane filter with a mesh size of less than 2 micrometers to intercept and prevent bacteria and other microorganisms carried in the air, forming a highly efficient physical barrier that effectively blocks bacteria and provides more thorough and lasting filtration. The filter 12 can also prevent the backflow of medicine while allowing air to pass through slowly, ensuring air pressure balance and preventing medicine from contaminating the air passage.

[0030] like Figure 2 , Figure 3 and Figure 3 As shown, in this embodiment, the filter screen 12 is mounted on the filter screen mounting base 10 via a fixing seat 13. Specifically, the filter screen 12 is disposed on the bottom surface of the filter screen mounting base 10, and the fixing seat 13 is fitted onto the filter screen mounting base 10, limiting the filter screen 12 between the bottom surface of the filter screen mounting base and the inner bottom of the fixing seat 13.

[0031] It should be noted that the filter mounting base 10 is a protruding post protruding downward from the partition plate 7. A groove is provided downward from the upper surface of the partition plate 7, and a boss is formed with the bottom of the groove protruding upward. The first air hole 11 is provided through the boss and the protruding post.

[0032] The mounting base 13 includes a base plate and a cylindrical body extending upward along the edge of the base plate. The cylindrical body is tightly fitted to or threadedly connected to the protruding post. After installation, the filter screen 12 is located between the bottom surface of the filter screen mounting base and the upper surface of the base plate.

[0033] Furthermore, such as Figure 5 , Figure 6 As shown, the liquid channel includes an inlet chamber 14 located on the mounting base 4, above the partition plate 7, and independent of the upper cavity 8. The inlet chamber 14 is connected to the inner cavity of the storage bottle 1 through the lower cavity 9. A first liquid channel 15 is provided on the side wall of the inlet chamber 14. A liquid passage gap 16 is formed between the mounting base 4 and the inner bottle cap 2. The liquid passage gap 16 is connected to the outlet chamber 6 through the outlet valve plate 5.

[0034] like Figure 2 , Figure 3 , Figure 5 and Figure 8 As shown, the liquid outlet valve plate 5 of this utility model includes an elastic plate 17 that is sealed on the upper end of the mounting base 4 and a plug 18 that is centrally located on the elastic plate 17 and can control the opening and closing of the liquid outlet channel 3. An annular ring 19 is provided on the outer ring of the upper surface of the elastic plate 17. A plurality of first liquid passage grooves 20 are distributed at intervals on the annular ring 19. A plurality of fan-shaped protrusions 21 are distributed circumferentially on the elastic plate 17 between the annular ring 19 and the plug 18. An annular groove 22 is formed between the fan-shaped protrusions 21 and the annular ring 19. A second liquid passage groove 23 is formed between adjacent fan-shaped protrusions 21. The first liquid passage grooves 20 and the second liquid passage grooves 23 are staggered and interconnected through the annular grooves 22.

[0035] When the liquid medicine enters the first liquid passage 20, the annular groove 22, and the second liquid passage 23, it squeezes the elastic sheet 17, causing it to deform. This, in turn, drives the plug 18 to move downward, connecting the liquid outlet chamber 6 and the liquid outlet channel 3, and squeezing the liquid medicine outward.

[0036] It should be noted that the dispensing valve plate 5 of this utility model also includes a mounting part 30, which is located on the bottom surface of the elastic plate 17. Correspondingly, an annular slot 31 is provided at the upper end of the mounting base 4, and the width of the upper part of the annular slot 31 is greater than the width of the lower part. The mounting part 30 is inserted into the annular slot 31 to radially position the dispensing valve plate 5. After installing the inner bottle cap 2, the axial positioning of the dispensing valve plate 5 is achieved.

[0037] In addition, such as Figure 3 , Figure 6 and Figure 7 As shown, the air channel includes a second air hole 24 located on the side wall of the inner cap 2 and penetrating the side wall, and a third air hole 25 penetrating the inner and outer walls of the mounting base 4. An air gap 26 is formed between the inner cap 2 and the mounting base 4. Air enters from the second air hole 24, passes through the air gap 26, the third air hole 25, and the first air hole 11 into the liquid storage bottle 1, causing the liquid storage bottle 1 to reset. The filter screen 12 can intercept and prevent bacteria and other microorganisms in the outside air, preventing bacteria in the air from contaminating the medicine in the liquid storage container 1. It should be noted that the third air hole 25 is arranged non-radially on the mounting base 4. The non-radial design can increase the tortuosity of the air channel and extend the airflow path. This structure can effectively slow down the speed at which outside air enters the liquid storage bottle 1, avoiding the impact of the medicine due to excessive airflow. At the same time, it can also reduce the straight entry of external pollutants (such as dust and microorganisms), and combined with the multiple barriers of the filter screen 12, further ensure the cleanliness of the medicine.

[0038] As can be seen from the above, the air channel and the liquid medicine channel of this utility model are independent channels, which effectively avoids the contamination of the liquid medicine in the inner cavity of the storage bottle 1.

[0039] like Figures 1-6 As shown, this utility model has an outer bottle cap 27 fitted over the inner bottle cap 2. The top of the inner bottle cap 2 is provided with a dropper 28, and the liquid outlet channel 3 is provided on the dropper 28. The top of the outer bottle cap 2 is provided with a cover 29, which covers the dropper 28 and can prevent the liquid outlet channel 3 from being contaminated.

[0040] The working principle of this utility model is as follows:

[0041] When eye drops are needed, squeezing the reservoir bottle 1 causes it to deform. The liquid inside flows through the inlet chamber 14, the first liquid channel 15, and the liquid passage 16 into the outlet chamber 6, causing the outlet valve 5 to deform and open the outlet channel 3. At this time, the liquid is squeezed out. The filter screen 12 prevents the liquid in the reservoir bottle 1 from flowing back, so the liquid will not enter the upper chamber 8.

[0042] When the storage bottle 1 is released, the dispensing valve 5 resets and seals the dispensing channel 3. The medicine exposed to air is blocked outside the dispensing channel 3, preventing contaminated medicine from returning to the storage container 1 and contaminating the medicine, thus achieving a bactericidal effect. Air is also blocked and will not enter the storage bottle 1 through the dispensing channel 3. During the restoration process of the storage bottle 1, outside air enters through the second vent 24, passes through the air gap 26, the third vent 25, and the first vent 11, and then enters the storage bottle 1, causing it to reset.

[0043] 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. An eye drop bottle, comprising a storage bottle (1) and an inner cap (2) connected to the upper end of the storage bottle (1), wherein a liquid outlet channel (3) is provided at the top of the inner cap (2), and a mounting base (4) is provided inside the inner cap (2), wherein a liquid outlet valve (5) for controlling the opening and closing of the liquid outlet channel (3) is provided at the upper end of the mounting base (4), wherein a liquid outlet cavity (6) is formed between the liquid outlet valve (5) and the top of the inner cap (2), and a liquid channel for communicating between the inner cavity of the storage bottle (1) and the liquid outlet cavity (6) is provided on the mounting base (4), wherein a partition plate (7) is also provided inside the mounting base (4) to divide the interior of the mounting base (4) into an upper cavity (8) and a lower cavity (9), wherein the lower cavity (9) communicates with the inner cavity of the storage bottle (1), and the upper cavity (8) communicates with the inner cavity of the storage bottle (1) through an air channel communicating with the outside, characterized in that: The partition plate (7) is provided with a filter screen mounting base (10), the filter screen mounting base (10) is provided with a first air hole (11) connecting the upper cavity (8) and the lower cavity (9), the filter screen (12) is provided on the filter screen mounting base (10) and covers the first air hole (11), and the filter screen (12) is made of a microporous membrane material with a mesh diameter of less than 2 micrometers.

2. An eye drop bottle according to claim 1, characterized in that: The filter screen (12) is set on the bottom surface of the filter screen mounting base (10), and the fixing base (13) is fitted on the filter screen mounting base (10) to limit the filter screen between the bottom surface of the filter screen mounting base (10) and the inner bottom of the fixing base (13).

3. An eye drop bottle according to claim 2, characterized in that: The filter mounting base (10) is a protruding post that protrudes downward from the partition plate (7). A groove is provided downward from the upper plane of the partition plate (7). A boss is formed with the bottom of the groove protruding upward. The first air hole (11) is provided through the boss and the protruding post.

4. An eye drop bottle according to claim 2, characterized in that: The fixing seat (13) includes a base plate and a cylindrical body extending upward along the edge of the base plate. The cylindrical body is tightly fitted or threadedly connected to the protrusion.

5. An eye drop bottle according to claim 1, characterized in that: The filter screen (12) is a polytetrafluoroethylene membrane or a polyvinylidene fluoride membrane.

6. An eye drop bottle according to claim 1, characterized in that: The liquid channel includes an inlet chamber (14) located on the mounting base (4), above the partition plate (7), and independent of the upper cavity (8). The inlet chamber (14) is connected to the inner cavity of the storage bottle (1) through the lower cavity (9). A first liquid channel (15) is provided on the side wall of the inlet chamber (14). A liquid passage gap (16) is formed between the mounting base (4) and the inner bottle cap (2). The liquid passage gap (16) is connected to the outlet chamber (6) through the outlet valve plate (5).

7. An eye drop bottle according to claim 1 or 6, characterized in that: The liquid outlet valve plate (5) includes an elastic plate (17) with a sealing cover on the upper end of the mounting base (4) and a plug (18) located in the center on the elastic plate (17) to control the opening and closing of the liquid outlet channel (3). The outer ring of the upper surface of the elastic plate (17) is provided with an annular ring (19). Several first liquid passage grooves (20) are distributed at intervals on the annular ring (19). Several fan-shaped protrusions (21) are distributed circumferentially on the elastic plate (17) between the annular ring (19) and the plug. An annular groove (22) is formed between the fan-shaped protrusions (21) and the annular ring (19). A second liquid passage groove (23) is formed between adjacent fan-shaped protrusions (21). The first liquid passage grooves (20) and the second liquid passage grooves (23) are staggered and connected to each other through the annular grooves (22).

8. An eye drop bottle according to claim 1, characterized in that: The air passage includes a second air hole (24) located on the side wall of the inner bottle cap (2) and penetrating the side wall, and a third air hole (25) penetrating the inner and outer side walls of the mounting base (4), forming an air gap (26) between the inner bottle cap (2) and the mounting base (4). Air enters from the second air hole (24), passes through the air gap (26), the third air hole (25), and the first air hole (11) into the liquid storage bottle (1).

9. An eye drop bottle according to claim 8, characterized in that: The third vent (25) is non-radially disposed on the mounting base (4).

10. An eye drop bottle according to claim 1, characterized in that: The inner bottle cap (2) is provided with a drip tip (28) at the top, and the liquid outlet channel (3) is provided on the drip tip (28). The inner bottle cap (2) is covered with an outer bottle cap (27), and the top of the outer bottle cap (27) is provided with a cover (29), which covers the drip tip (28).

Images