An eye drop bottle

Abstract

The present application belongs to the technical field of liquid container, and particularly relates to an eyedrop bottle, which comprises a squeezable liquid storage bottle and an inner bottle cap connected to the upper end of the liquid storage bottle and forming a cavity with the liquid storage bottle, the upper end of the inner bottle cap is provided with a liquid outlet hole communicating with the cavity, an elastic body is arranged in the inner bottle cap, the upper end of the elastic body is provided with a sealing part, an air inlet hole is arranged on the inner bottle cap and / or the liquid storage bottle, an air filter device and a one-way air inlet device are arranged between the air inlet hole and the cavity, when the liquid storage bottle is squeezed, the liquid in the cavity squeezes the elastic body, the sealing part moves away from the liquid outlet hole, and the liquid outlet hole and the cavity are in communication; when the liquid storage bottle is released, the elastic body returns to the original position, and air enters the cavity through the air filter device and the one-way air inlet device. The present application has the advantages that the liquid outlet hole can slowly and uniformly discharge liquid, effectively reducing the waste of eyedrops; the residual eyedrops in the liquid outlet hole cannot flow back, the air outside is filtered and then enters the cavity, the eyedrops are effectively delayed from deteriorating, and the service life of the eyedrops is prolonged.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of liquid containers, and particularly relates to an eyedrop bottle. BACKGROUND

[0002] Eyedrops are one of the most commonly used drug forms in ophthalmology, and for many eye diseases, eyedrops have direct and rapid therapeutic effects.

[0003] A utility model patent CN214181116U discloses an extrusion type eyedrop bottle, which comprises a bottle body, a bottle neck and a bottle nozzle, the lower part of the bottle nozzle is provided with a bottle seat fixedly connected with the bottle neck, the middle part of the bottle seat is provided with a spray hole connected with the inside of the bottle body and the bottle nozzle, a plurality of buckle assemblies are arranged on the bottom wall of the bottle seat in a circumferential direction, the top wall of the bottle neck is provided with a plurality of clamping grooves for the corresponding buckle assemblies to extend into and clamp, the outer diameter of the bottle nozzle is smaller than that of the bottle seat, the outer diameter of the bottle seat is smaller than that of the bottle neck, a sealing cap for sealing the bottle nozzle is threadedly connected to the bottle neck, the inner wall of the sealing cap is provided with a first step portion protruding radially inward at a position corresponding to the bottle seat, the inner circumferential wall of the first step portion is in abutment with the outer circumferential wall of the bottle seat, the bottom wall of the first step portion is in abutment with the top wall of the bottle neck, the inner wall of the sealing cap is provided with a second step portion protruding radially inward at a position corresponding to the bottle nozzle, the inner circumferential wall of the second step portion is in abutment with the outer circumferential wall of the bottle nozzle, the bottom wall of the second step portion is in abutment with the top wall of the bottle seat, the top part of the sealing cap is provided with a protruding portion protruding axially upward, and the inner wall of the protruding portion is provided with a sealing rod extending into the bottle nozzle to seal the bottle nozzle.

[0004] The eyedrop bottle has the following defects: 1. The eyedrop bottle is squeezed by hand, the pressure in the bottle body is increased, the eyedrops are directly squeezed out of the bottle nozzle, the flow of the eyedrops is completely controlled by the force of squeezing the bottle body, the eyedrops are easily sprayed due to the excessively high outlet pressure, which causes the patient to have other diseases or discomfort, and the eyedrops are also wasted, which increases the treatment cost of the patient; 2. After use, the eyedrops that have contacted air in the bottle nozzle flow back to the bottle body, which pollutes the eyedrops in the bottle body; 3. After use, air is directly sucked into the bottle body through the bottle nozzle to balance the pressure inside and outside the bottle body, and the air entering the bottle body pollutes the eyedrops in the bottle body. SUMMARY

[0005] The purpose of the application is to provide an eyedrop bottle, which has slow and uniform liquid outlet of the liquid outlet hole, effectively reduces the waste of eyedrops, and prevents the residual eyedrops in the liquid outlet hole from flowing back.

[0006] The application is implemented as follows:

[0007] An eye drop bottle comprises a liquid storage bottle with squeezable bottle body and an inner bottle cap connected to the upper end of the liquid storage bottle and forming a cavity with the liquid storage bottle, the upper end of the inner bottle cap is provided with a liquid outlet hole communicating with the cavity, the inner bottle cap is provided with an elastic body, the upper end of the elastic body is provided with a sealing part, the inner bottle cap and / or the liquid storage bottle is provided with an air inlet hole communicating with the cavity, the air inlet hole and the cavity are provided with an air filter device and a one-way air inlet device, when the liquid storage bottle body is squeezed, the liquid storage bottle body is deformed, the liquid in the cavity squeezes the elastic body, the sealing part moves away from the liquid outlet hole, the liquid outlet hole and the cavity are in communication; when the liquid storage bottle body is released, the elastic body returns to its original position, the sealing part seals the liquid outlet hole, the liquid storage bottle body returns to its original position, and air enters the cavity through the air inlet hole, the air filter device and the one-way air inlet device.

[0008] In the above-mentioned eye drop bottle, the air filter device and the one-way air inlet device can be a waterproof and breathable membrane arranged at the air inlet hole; the air filter device can also be a filter membrane arranged at the air inlet hole, and the one-way air inlet device can also be a one-way valve arranged at the air inlet hole.

[0009] In the above-mentioned eye drop bottle, the structure of the air filter device can also be that the air inlet hole is arranged on the side wall of the inner bottle cap, the inner bottle cap below the air inlet hole is sleeved with the liquid storage bottle, and the air filter device comprises a gas storage cavity arranged in the inner bottle cap and communicating with the air inlet hole, and the gas storage cavity and the cavity are provided with the one-way air inlet device.

[0010] In the above-mentioned eye drop bottle, the one-way air inlet device can also be an elastic sheet attached to the inner bottle cap to block the communication channel between the gas storage cavity and the cavity, when the liquid storage bottle body is released, the liquid storage bottle body returns to its original position, the pressure in the cavity is less than that in the gas storage cavity, and the air in the gas storage cavity pushes away the elastic sheet to enter the cavity.

[0011] In the above-mentioned eye drop bottle, the lower end of the inner bottle cap is provided with an annular groove with an open lower end, and a ring-shaped sealing gasket is attached to the lower end face of the inner bottle cap to seal the open lower end of the annular groove, the annular groove and the ring-shaped sealing gasket form the gas storage cavity, the ring-shaped sealing gasket extends upward to attach to the side wall of the inner bottle cap to form the elastic sheet, and the air filter device further comprises a micropore arranged on the side wall of the annular groove, and the air in the gas storage cavity pushes away the elastic sheet to enter the cavity through the micropore.

[0012] In the above-mentioned eye drop bottle, the structure of the elastic body can be that the elastic body is a spring, and the upper end of the spring is provided with the sealing part.

[0013] In the eye drop bottle, the elastic body can also have a structure as follows: the elastic body comprises an upper end, a lower end, and a plurality of elastic spiral lines connecting the upper end and the lower end, the sealing part is arranged on the upper end, the lower end is tightly fitted and fixed on the inner side wall of the inner bottle cap, and the lower end is connected with the annular sealing gasket to form an integrated structure to fix the annular sealing gasket.

[0014] In the eye drop bottle, the elastic body, the annular sealing gasket, and the elastic sheet are in an integrated structure, and the elastic body, the annular sealing gasket, and the elastic sheet are made of elastic plastic.

[0015] In the eye drop bottle, the upper end comprises a cylindrical segment and a truncated conical segment connected to the lower end of the cylindrical segment, the sealing part is arranged on the upper end of the cylindrical segment, and the elastic spiral lines are connected to the lower end of the truncated conical segment.

[0016] In the eye drop bottle, the pore size of the micropores is less than 0.2 microns.

[0017] In the eye drop bottle, the outer side wall of the lower end of the inner bottle cap is a conical surface one with a large upper end and a small lower end, the elastic sheet is attached to the outer side wall of the inner bottle cap, and the inner side wall of the elastic sheet is a conical surface two matched with the conical surface one.

[0018] In the eye drop bottle, the hole wall of the liquid outlet hole extends downward along the axial direction to form a protruding part, the top of the sealing part is inwardly recessed to form a recessed part, and the protruding part and the recessed part abut to seal the liquid outlet hole.

[0019] In the eye drop bottle, the hole wall of the liquid outlet hole extends upward along the axial direction to form a liquid dripping part, the outer cover of the inner bottle cap is provided with an outer bottle cap, the outer bottle cap protrudes into the inner cavity to form a cover cap covering the liquid dripping part, and the outer bottle cap is tightly fitted with the inner bottle cap or is screw-connected with the inner bottle cap.

[0020] In the eye drop bottle, the connection mode of the inner bottle cap and the liquid storage bottle can be that the upper end of the liquid storage bottle is provided with a clamping hook, the outer side wall of the inner bottle cap is connected with a clamping part, the clamping part is provided with a clamping groove matched with the clamping hook, and the inner bottle cap is detachably connected to the upper end of the liquid storage bottle through the clamping hook and the clamping groove; the connection mode of the inner bottle cap and the liquid storage bottle can also be that the inner bottle cap is detachably connected with the liquid storage bottle through tight fitting or screw connection.

[0021] Compared with the prior art, the eye drop bottle has the following outstanding advantages:

[0022] 1. The bottle body of the extrusion liquid storage bottle, the liquid storage bottle body is deformed, the eye drops are first extruded by the elastic body, the sealing part moves away from the liquid outlet hole side, the liquid outlet hole is in communication with the cavity, and then the eye drops are extruded from the liquid outlet hole, the pressure of the eye drops is partially consumed by the elastic body, the extrusion force of the eye drops extruded from the liquid outlet hole is small, the eye drops are not easy to flow out from the liquid outlet hole in the form of jet, the liquid is slowly and uniformly discharged, the elastic body is reset after use, the sealing part seals the liquid outlet hole, the residual eye drops in the liquid outlet hole will not enter the cavity, but will be dried at the liquid outlet hole, so that the eye drops in the cavity are not polluted, and at the same time, air will not directly enter the cavity through the liquid outlet hole; the liquid storage bottle body is restored, air enters the cavity after being filtered by the air filtering device, and the eye drops in the cavity are effectively prevented from being polluted by unfiltered air; the one-way air inlet device arranged between the air inlet hole and the cavity effectively prevents the eye drops in the cavity from flowing out and losing, and prevents the air in the cavity from flowing out and exchanging with the air outside, effectively delays the deterioration of the eye drops, and prolongs the service life of the eye drops.

[0023] 2. The air filtering device of the application comprises a gas storage cavity arranged in the inner bottle cap and communicated with the air inlet hole, and a micropore arranged on the side wall of the annular groove, which effectively filters microorganisms and dust in the air and delays the deterioration of the eye drops in the air;

[0024] 3. The one-way air inlet device of the application is an elastic sheet attached to the inner bottle cap to block the communication channel between the gas storage cavity and the cavity, when the liquid storage bottle body is loosened, the liquid storage bottle body is restored, the air in the gas storage cavity pushes away the elastic sheet to enter the cavity, which can effectively prevent liquid leakage and exchange of air in the cavity with air outside while ensuring air inlet;

[0025] 4. The annular sealing gasket of the application extends upward to be attached to the side wall of the inner bottle cap to form the elastic sheet, the elastic sheet and the opening of the inner bottle cap face upward, and even if the eye drops enter between the elastic sheet and the liquid storage bottle, they will not enter between the elastic sheet and the inner bottle cap upward, effectively preventing liquid leakage. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a sectional view of the application;

[0027] Figure 2 is an exploded view of the application;

[0028] Figure 3 is a perspective view of the inner bottle cap of the application;

[0029] Figure 4 is a perspective view of the outer bottle cap of the application;

[0030] Figure 5 is a sectional view of the screw connection of the outer bottle cap and the inner bottle cap of the application.

[0031] Reference numerals: 1. Liquid storage bottle; 2. Inner cap; 3. Cavity; 4. Liquid outlet; 5. Elastomer; 6. Sealing part; 7. Air inlet; 8. Gas storage chamber; 9. Elastic sheet; 10. Annular sealing gasket; 11. Micropore; 12. Upper end; 13. Lower end; 14. Elastic spiral; 15. Conical surface one; 16. Conical surface two; 17. Protrusion; 18. Groove; 19. Drip part; 20. Outer cap; 21. Cover; 22. Hook; 23. Snap-fit ​​part; 24. Slot. Detailed Implementation

[0032] The present invention will be further described below with reference to specific embodiments. See also: Figure 1 —5:

[0033] An eye drop bottle includes a squeeze-deformable storage bottle 1 and an inner cap 2 connected to the upper end of the storage bottle 1 and forming a cavity 3 with the storage bottle 1. The upper end of the inner cap 2 is provided with a liquid outlet 4 communicating with the cavity 3. An elastic body 5 is provided inside the inner cap 2, and a sealing part 6 is provided at the upper end of the elastic body 5. An air inlet 7 communicating with the cavity 3 is provided on the inner cap 2 and / or the storage bottle 1. An air filter and a one-way air intake device are provided between the air inlet 7 and the cavity 3. When the body of the storage bottle 1 is squeezed, the body of the storage bottle 1 deforms, the liquid in the cavity 3 squeezes the elastic body 5, and the sealing part 6 moves away from the liquid outlet 4, so that the liquid outlet 4 is in communication with the cavity 3. When the body of the storage bottle 1 is released, the elastic body 5 returns to its original position, the sealing part 6 seals the liquid outlet 4, the body of the storage bottle 1 returns to its original position, and air enters the cavity 3 from the air inlet 7 through the air filter and the one-way air intake device.

[0034] The working principle of this invention is as follows: Figure 1 , 2As shown, when in use, the bottle body of the squeeze liquid storage bottle 1 is squeezed, the bottle body of the squeeze liquid storage bottle 1 is deformed, the cavity 3 is squeezed, the eye drops in the cavity 3 squeeze the elastic body 5, the sealing part 6 moves away from the liquid outlet hole 4, the liquid outlet hole 4 is in communication with the cavity 3, the eye drops are squeezed out of the liquid outlet hole 4, and droplets with the same size are formed; when the bottle body of the squeeze liquid storage bottle 1 is loosened, the elastic body 5 is reset, the sealing part 6 seals the liquid outlet hole 4, air cannot directly enter the cavity 3 through the liquid outlet hole 4, the bottle body of the squeeze liquid storage bottle 1 is restored, and air enters the cavity 3 after being filtered by the air filtering device. The bottle body of the squeeze liquid storage bottle 1 is squeezed, the bottle body of the squeeze liquid storage bottle 1 is deformed, the eye drops first squeeze the elastic body 5, the sealing part moves away from the liquid outlet hole 4, the eye drops are squeezed out of the liquid outlet hole 4 after the liquid outlet hole 4 is in communication with the cavity 3, the pressure of the eye drops is partially consumed by the elastic body 5, the extrusion force of the eye drops squeezed out of the liquid outlet hole 4 is small, the eye drops are not easy to flow out of the liquid outlet hole 4 in the form of spraying, the liquid is slowly and evenly discharged, the elastic body 5 is reset after use, the sealing part 6 seals the liquid outlet hole 4, the residual eye drops in the liquid outlet hole 4 will not enter the cavity 3, but will be dried at the liquid outlet hole 4, so as not to pollute the eye drops in the cavity 3, and air will not directly enter the cavity 3 through the liquid outlet hole 4; the bottle body of the squeeze liquid storage bottle 1 is restored, and air enters the cavity 3 after being filtered by the air filtering device, thereby effectively avoiding that unfiltered air pollutes the eye drops in the cavity 3; the one-way air inlet device arranged between the air inlet hole 7 and the cavity 3 effectively prevents the eye drops in the cavity 3 from flowing out and being lost, and prevents the air in the cavity 3 from flowing out and exchanging with the air outside, thereby effectively delaying the deterioration of the eye drops and prolonging the service life of the eye drops.

[0035] The structure of the air filtering device is as shown in Figure 1 、 2 The air inlet hole 7 is arranged on the sidewall of the inner bottle cap 2, the inner bottle cap 2 below the air inlet hole 7 is sleeved with the squeeze liquid storage bottle 1, the air filtering device comprises a gas storage cavity 8 arranged in the inner bottle cap 2 and communicating with the air inlet hole 7, and the one-way air inlet device is arranged between the gas storage cavity 8 and the cavity 3. Air outside enters the gas storage cavity 8 through the air inlet hole 7, and microorganisms and dust in the air are adsorbed on the sidewall of the gas storage cavity 8, thereby achieving the effect of filtering air.

[0036] The structure of the one-way air inlet device is as shown in Figure 1 、 2 The one-way air inlet device is an elastic sheet 9 attached to the inner bottle cap 2 to block the communication channel between the gas storage cavity 8 and the cavity 3, when the bottle body of the squeeze liquid storage bottle 1 is loosened, the bottle body of the squeeze liquid storage bottle 1 is restored, the pressure in the cavity 3 is less than the pressure in the gas storage cavity 8, and the air in the gas storage cavity 8 pushes away the elastic sheet 9 to enter the cavity 3. The present application ensures air inlet, effectively prevents liquid leakage, and prevents the air in the cavity 3 from flowing out and exchanging with the air outside.

[0037] Furthermore, the lower end of the inner bottle cap 2 is provided with an annular groove with an opening at the lower end. An annular sealing gasket 10, sealing the opening at the lower end of the annular groove, is fitted to the lower surface of the inner bottle cap 2. The annular groove and the annular sealing gasket 10 form the gas storage chamber 8. The annular sealing gasket 10 extends upwards and fits against the side wall of the inner bottle cap 2 to form the elastic sheet 9. The openings of the elastic sheet 9 and the inner bottle cap 2 face upwards. When the bottle is inverted for dripping, even if eye drops enter between the elastic sheet 9 and the storage bottle 1, they will not enter upwards between the elastic sheet 9 and the inner bottle cap 2, effectively preventing leakage. Figure 1 , 3 As shown, the air filtration device also includes micropores 11 disposed on the side wall of the annular groove. Air from the air storage chamber 8 enters the cavity 3 by pushing aside the elastic sheet 9 through the micropores 11. The micropores 11 effectively filter microorganisms in the air and further filter the air flowing into the cavity 3 from the air storage chamber 8.

[0038] Furthermore, the elastic sheet 9 is annularly attached to the side wall of the inner bottle cap 2, and the micropores 11 are evenly distributed around the lower side wall of the annular groove, increasing the communication channel between the gas storage chamber 8 and the cavity 3, facilitating air intake.

[0039] Preferably, the pore size of the micropore 11 is less than 0.2 micrometers, which effectively prevents microorganisms from entering the cavity 3.

[0040] The structure of elastomer 5: as follows Figure 1 , 2 As shown, the elastomer 5 includes an upper end 12, a lower end 13, and a plurality of elastic spirals 14 connecting the upper end 12 and the lower end 13. The sealing part 6 is disposed on the upper end 12. The lower end 13 is tightly fitted and fixed to the inner side wall of the inner bottle cap 2. The lower end 13 is connected to the annular sealing gasket 10 at its lower end to form an integral structure to fix the annular sealing gasket 10.

[0041] To facilitate processing and reduce assembly steps, the elastomer 5, annular sealing gasket 10, and elastic sheet 9 are integrally formed, and the materials of the elastomer 5, annular sealing gasket 10, and elastic sheet 9 are elastic plastics. The elastomer 5 of this invention is metal-free, effectively preventing metal rust from contaminating the eye drops.

[0042] Structure of the upper end portion 12: The upper end portion 12 includes a cylindrical section and a truncated conical section connected to the lower end of the cylindrical section. The sealing part 6 is disposed at the upper end of the cylindrical section, and the elastic spiral 14 is connected to the lower end of the truncated conical section. When the body of the storage bottle 1 deforms, the liquid in the cavity 3 acts on the upper end surface of the cylindrical section, compressing the elastic spiral 14, causing the upper end portion 12 to move away from the outlet hole 4.

[0043] Preferably, the outer side wall of the lower end of the inner bottle cap 2 is a taper surface 15 which is large at the top and small at the bottom, the elastic sheet 9 is attached to the outer side wall of the inner bottle cap 2, and the inner side wall of the elastic sheet 9 is a taper surface 16 which is adapted to the taper surface 15, so that the air pushes the elastic sheet 9 away and further prevents the eye drops from entering the air storage cavity 8 through the gap between the elastic sheet 9 and the inner bottle cap 2.

[0044] Preferably, the hole wall of the liquid outlet hole 4 extends downward along the axial direction to form a convex part 17, the top of the sealing part 6 is inwardly concave to form a groove part 18, the convex part 17 and the groove part 18 abut to seal the liquid outlet hole 4, and the sealing effect is good.

[0045] In order to prevent the liquid outlet hole 4 from being exposed to the air and being contaminated, as shown in Figure 1 , 2 , the hole wall of the liquid outlet hole 4 extends upward along the axial direction to form a liquid drop part 19, the inner bottle cap 2 is provided with an outer bottle cap 20, the outer bottle cap 20 protrudes inwardly to form a cover 21 which covers the liquid drop part 19, and the liquid leakage is further prevented. The outer bottle cap 20 can be tightly fitted with the inner bottle cap 2, as shown in Figure 1 , and the outer bottle cap 20 can also be screwed with the inner bottle cap 2, as shown in Figure 5 .

[0046] The connection mode of the liquid storage bottle 1 and the inner bottle cap 2 is as follows: as shown in Figures 1-3 , the upper end of the liquid storage bottle 1 is provided with a clamping hook 22, the outer side wall of the inner bottle cap 2 is connected with a clamping part 23, the clamping part 23 is provided with a clamping groove 24 which is adapted to the clamping hook 22, and the inner bottle cap 2 is detachably connected to the upper end of the liquid storage bottle 1 through the clamping hook 22 and the clamping groove 24.

[0047] The above embodiment is only one of the preferred embodiments of the present application, and does not limit the scope of the present application, so that equivalent changes made according to the shape, structure and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An eye drop bottle, comprising a liquid storage bottle (1) which can be squeezed and deformed, and an inner bottle cap (2) connected to the upper end of the liquid storage bottle (1) and forming a cavity (3) with the liquid storage bottle (1), wherein the upper end of the inner bottle cap (2) is provided with a liquid outlet hole (4) which communicates with the cavity (3), characterized in that: The inner bottle cap (2) is internally provided with an elastic body (5), the upper end of the elastic body (5) is provided with a sealing part (6), the inner bottle cap (2) and / or the liquid storage bottle (1) is provided with an air inlet hole (7) communicating with the cavity (3), the air inlet hole (7) and the cavity (3) are provided with an air filtering device and a one-way air inlet device, when the bottle body of the liquid storage bottle (1) is squeezed, the bottle body of the liquid storage bottle (1) is deformed, the liquid in the cavity (3) squeezes the elastic body (5), the sealing part (6) moves away from the liquid outlet hole (4) side, the liquid outlet hole (4) and the cavity (3) are in a communication state; when the bottle body of the liquid storage bottle (1) is loosened, the elastic body (5) resets, the sealing part (6) seals the liquid outlet hole (4), the bottle body of the liquid storage bottle (1) restores, and air enters the cavity (3) from the air inlet hole (7) through the air filtering device and the one-way air inlet device, the air filtering device comprises a gas storage cavity (8) arranged in the inner bottle cap (2) and communicating with the air inlet hole (7), the one-way air inlet device is an elastic sheet (9) attached to the inner bottle cap (2) to block the communication channel between the gas storage cavity (8) and the cavity (3), the elastic body (5) comprises an upper end part (12), a lower end part (13), and a plurality of elastic spiral lines (14) connecting the upper end part (12) and the lower end part (13), the sealing part (6) is arranged on the upper end part (12), the lower end part (13) is tightly fitted and fixed on the inner side wall of the inner bottle cap (2), the lower end of the lower end part (13) is connected with a ring-shaped sealing gasket (10) to form an integrated structure to fix the ring-shaped sealing gasket (10), the ring-shaped sealing gasket (10) extends upward and is attached to the side wall of the inner bottle cap (2) to form the elastic sheet (9), the upper end part (12) comprises a cylindrical segment and a truncated cone segment connected to the lower end of the cylindrical segment, the sealing part (6) is arranged on the upper end of the cylindrical segment, and the elastic spiral lines (14) are connected to the lower end of the truncated cone segment, when the bottle body of the liquid storage bottle (1) is deformed, the liquid in the cavity (3) acts on the upper end face of the cylindrical segment, the elastic spiral lines (14) are compressed, and the upper end part (12) moves away from the liquid outlet hole (4) side. ​ 2. An eye drop bottle according to claim 1, wherein: The air inlet hole (7) is arranged on the side wall of the inner bottle cap (2), the inner bottle cap (2) below the air inlet hole (7) is sleeved with the liquid storage bottle (1), and the gas storage cavity (8) and the cavity (3) are provided with the one-way air inlet device.

3. An eye drop bottle according to claim 2, wherein: When the bottle body of the liquid storage bottle (1) is loosened, the bottle body of the liquid storage bottle (1) restores, and the air in the gas storage cavity (8) pushes away the elastic sheet (9) to enter the cavity (3).

4. An eye drop bottle according to claim 3, wherein: The lower end of the inner bottle cap (2) is provided with a lower-end-opened annular groove, the lower end face of the inner bottle cap (2) is attached with a ring-shaped sealing gasket (10) sealing the lower end opening of the annular groove, and the annular groove and the ring-shaped sealing gasket (10) form the gas storage cavity (8), the air filtering device further comprises a micropore (11) arranged on the side wall of the annular groove, and the air in the gas storage cavity (8) pushes away the elastic sheet (9) to enter the cavity (3) through the micropore (11).

5. An eye drop bottle according to claim 4, wherein: The pore diameter of the micropore (11) is less than 0.2 microns.

6. An eye drop bottle according to claim 4, wherein: The outer side wall of the lower end of the inner bottle cap (2) is a taper surface one (15) which is large at the top and small at the bottom, the elastic sheet (9) is attached to the outer side wall of the inner bottle cap (2), and the inner side wall of the elastic sheet (9) is a taper surface two (16) which is matched with the taper surface one (15).

7. The eye drop bottle according to claim 1, wherein: The hole wall of the liquid outlet hole (4) extends downward along the axial direction to form a convex part (17), the top of the sealing part (6) is inwardly concave to form a concave groove part (18), and the convex part (17) and the concave groove part (18) are in contact to seal the liquid outlet hole (4).

8. The eye drop bottle according to claim 1, wherein: The hole wall of the liquid outlet hole (4) extends upward along the axial direction to form a liquid drop part (19), the outer bottle cap (20) is arranged on the outer cover of the inner bottle cap (2), the outer bottle cap (20) protrudes inwardly to form a cover cap (21) which covers the liquid drop part (19), and the outer bottle cap (20) is tightly matched with the inner bottle cap (2) or is screw-connected with the inner bottle cap (2).

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