Eyedrop dropping administration device capable of preventing large amount of liquid medicine from being sprayed out due to overexertion

Abstract

The eyedrop dropping and dosing device capable of preventing a large amount of liquid medicine from being sprayed out due to overexertion comprises the eyedrop bottle body, the nozzle and the bottle cap, and the structure of the eyedrop dropping and dosing device is similar to that of an existing product, so that the impact influence on original production and filling equipment is small, and the cost is lower than that of an eyedrop dropping and dosing device with a one-way valve; a nozzle runner is formed in the middle of the nozzle, a nozzle inner plug is arranged below the nozzle runner, and a nozzle inner plug liquid guide groove is formed in the side portion of the nozzle inner plug. A micro liquid storage chamber is formed among the nozzle inner plug liquid guide groove, the nozzle inner plug and the nozzle, and forms a micro dosing channel with the nozzle flow channel, so that the liquid medicine can be quantitatively and accurately supplied even if the liquid medicine is excessively extruded, and uniform dripping of liquid drops is realized; after liquid dropping is completed, under the action of natural gravity and surface tension of liquid medicine, residual eye drops in the flow channel cannot flow back to the bottle body, even if the residual eye drops in the flow channel are polluted, the eye drops in the bottle body cannot be affected, and therefore the service life of the eye drops is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of medical supplies, in particular to an eye drop administration device that prevents a large amount of liquid medicine from being ejected due to excessive force. Background Art

[0002] Prolonged and unhealthy overuse of eyes, such as using electronic products for a long time, can cause eye discomfort or various symptoms. Eye drops are commonly used drugs for treating eye diseases and relieving eye fatigue. Most of the current eye drop products on the market are contained in eye drop bottles, and it is impossible to avoid the problem of a large amount of liquid medicine dripping or spraying out due to excessive squeezing of the eye drop bottle.

[0003] Most of the current eye drop administration devices on the market have a simple and basically the same structure, which consists of three major parts: a bottle body, a bottle mouth, and a bottle cap. The administration port is a hole with almost no length or a very short length on the end face of the bottle mouth. When dropping eye drops, the eye drop bottle is inverted and the bottle body is squeezed by hand. Since the eye drops reach the administration port directly without any buffer, if the squeezing force is slightly larger or excessive, the liquid medicine will spurt out directly, which will not only cause discomfort to the eyes but also make the overflowing liquid medicine flow onto the face. At the same time, after opening and using, the liquid at the bottle mouth comes into contact with the external environment, and it is extremely easy to bring dust, bacteria and other substances into the eye drop bottle, causing the whole bottle of eye drops to be contaminated. There is also, for example, the Hycosan eye drop system on the market, which consists of multiple components such as a bottom cover, a reservoir shell, a reservoir, an outer bottle body, a lower valve silver bead, a pump shell, a sealing valve, a control cylinder, a head, an outlet valve piston, an outlet valve spring, a gasket, a drip orifice silver spring, and a bottle cap. When in use: 1) Press the bottom of the bottle - the pressure makes the silver ball bounce up - the lower valve opens - the liquid medicine enters the storage area from the bottle - the silver ball bounces back - the lower valve closes (separating the storage chamber and the liquid medicine in the bottle); 2) Since the liquid cannot store pressure. Therefore, when the pressure reaches more than 3 Pa: the upper valve opens - a fixed amount of liquid medicine is released - the pressure in the storage chamber will immediately decrease - without an air pump release, the upper valve closes (to prevent external air from being sucked back into the bottle) - the silver ball bounces up - the lower valve opens - the liquid medicine enters the storage area again (to supplement the pressure); 3) The soft inner bladder of the medicine bottle balances the air pressure inside and outside the bottle by changing its shape. In this way, it is impossible for external air to enter the system and cause pollution. The control of the two one-way valves can drip a stable amount of liquid medicine during use and avoid the situation of a large increase in the liquid supply due to excessive force. However, this structure is very complex, and both production and filling require customized equipment, and the price of its production equipment is expensive.

[0004] Therefore, there is an urgent need for an eye drop administration device that prevents a large amount of liquid medicine from being ejected due to excessive force and can solve the above problems. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide an eye drop administration device that can prevent a large amount of liquid medicine from being ejected due to excessive force, so as to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above object, the present utility model provides the following solutions:

[0007] The present utility model provides an eye drop administration device that can prevent a large amount of liquid medicine from being ejected due to excessive force, including an eye drop bottle body. A nozzle is installed inside the bottle mouth of the eye drop bottle body. A bottle cap is screwed onto the outside of the bottle mouth through an external thread on the bottle mouth. A nozzle flow channel is opened in the middle of the nozzle. The nozzle flow channel is a flared structure with a larger upper part and a smaller lower part, and a nozzle drip port is provided at its top. A nozzle inner plug is provided below the nozzle flow channel. A nozzle inner plug liquid guide groove is provided on the side of the nozzle inner plug. Both ends of the nozzle inner plug liquid guide groove are respectively communicated with the outer surface of the nozzle inner plug and the lower end surface of the nozzle inner plug. The outer surface of the nozzle inner plug is communicated with the bottom of the nozzle flow channel.

[0008] Preferably, the lower part of the nozzle is respectively provided with a nozzle outer cylindrical surface and a nozzle inner surface on both sides. The nozzle outer cylindrical surface is in tight fit with the inner side wall of the bottle mouth, and the nozzle inner surface is in clearance fit with the nozzle inner plug.

[0009] Preferably, a nozzle outer snap ring is provided between the nozzle outer cylindrical surface and the inner side wall of the bottle mouth.

[0010] Preferably, a nozzle inner plug card slot is provided on the outer surface of the nozzle inner plug, and a nozzle inner snap ring is provided between the nozzle inner plug card slot and the nozzle.

[0011] Preferably, the length of the nozzle flow channel is 13 mm, and the aperture of its bottom is 0.35 - 1.5 mm.

[0012] Preferably, a nozzle end face is provided at the top of the nozzle, and the diameter of the nozzle end face is 3.2 - 3.5 mm.

[0013] Preferably, a nozzle flange is provided in the middle of the nozzle, and the nozzle flange is matched with the top of the bottle mouth.

[0014] Preferably, a sealing plug is provided on the inner side of the top of the bottle cap, and the sealing plug is matched with the nozzle drip port.

[0015] Preferably, anti-slip stripes are provided on the outer surface of the bottle cap.

[0016] Preferably, an anti-theft ring is connected to the bottom of the bottle cap through a connecting bridge, and the anti-theft ring is limited to the eye drop bottle body.

[0017] The present utility model has achieved the following beneficial technical effects compared with the prior art:

[0018] The eye drop administration device provided by the utility model for preventing a large amount of liquid medicine from being ejected due to excessive force includes an eye drop bottle body, a nozzle and a bottle cap. Its structure is similar to that of existing products, so the impact on the original production and filling equipment is small, and the cost is lower than that of the eye drop administration device with a one-way valve; a nozzle flow channel is provided in the middle of the nozzle, a nozzle inner plug is provided below the nozzle flow channel, and a nozzle inner plug liquid guide groove is provided on the side of the nozzle inner plug; a micro liquid storage chamber is formed by the nozzle inner plug liquid guide groove, the nozzle inner plug and the nozzle, and forms a micro administration channel with the nozzle flow channel. Even if the liquid medicine is extruded with excessive force, the liquid medicine can be supplied quantitatively and accurately, and uniform liquid drops can be dropped; after the eye drops are completed, under the action of natural gravity and the surface tension of the liquid medicine, the remaining eye drops in the flow channel will not flow back into the bottle body. Even if the remaining eye drops in the flow channel are contaminated, it will not affect the eye drops in the bottle body, thereby prolonging the service life of the eye drops. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of an eye drop administration device provided by the present utility model for preventing a large amount of liquid medicine from being ejected due to excessive force;

[0021] Figure 2 It is a cross-sectional view of an eye drop administration device provided by the present utility model for preventing a large amount of liquid medicine from being ejected due to excessive force;

[0022] Figure 3 It is a schematic structural diagram of the nozzle in an eye drop administration device provided by the present utility model for preventing a large amount of liquid medicine from being ejected due to excessive force;

[0023] Figure 4 It is a schematic structural diagram of the nozzle inner plug in an eye drop administration device provided by the present utility model for preventing a large amount of liquid medicine from being ejected due to excessive force. Detailed Embodiments

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0025] The purpose of the present utility model is to provide an eye drop administration device that prevents a large amount of liquid medicine from being ejected due to excessive force, so as to solve the problems existing in the prior art.

[0026] In order to make the above objects, features, and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Embodiment 1:

[0028] This embodiment provides an eye drop administration device that prevents a large amount of liquid medicine from being ejected due to excessive force, including an eye medicine bottle body 1. A nozzle 4 is installed inside the bottle mouth of the eye medicine bottle body 1. A bottle cap 3 is screwed on the outside of the bottle mouth through an external bottle mouth thread 13. A nozzle flow channel 6 is opened in the middle of the nozzle 4. The nozzle flow channel 6 is a flared structure with a larger upper part and a smaller lower part. Its top is provided with a nozzle drip orifice 11. A nozzle inner plug 7 is provided below the nozzle flow channel 6. A nozzle inner plug liquid guide groove 16 is provided on the side of the nozzle inner plug 7. Both ends of the nozzle inner plug liquid guide groove 16 are communicated with the outer surface 17 of the nozzle inner plug and the lower end face 19 of the nozzle inner plug respectively. The outer surface 17 of the nozzle inner plug is communicated with the bottom of the nozzle flow channel 6.

[0029] As an implementation manner, the lower part of both sides of the nozzle 4 is respectively provided with a nozzle outer cylindrical surface 15 and a nozzle inner surface 20. The nozzle outer cylindrical surface 15 is in tight fit with the inner side wall of the bottle mouth, and the nozzle inner surface 20 is in clearance fit with the nozzle inner plug 7, which is convenient for assembly.

[0030] As an implementation manner, a nozzle outer snap ring 9 is provided between the nozzle outer cylindrical surface 15 and the inner side wall of the bottle mouth, so as to achieve connection.

[0031] As an implementation manner, a nozzle inner plug card slot 18 is provided on the outer surface of the nozzle inner plug 7. A nozzle inner snap ring 10 is provided between the nozzle inner plug card slot 18 and the nozzle 4, so as to achieve connection.

[0032] As an implementation manner, the length of the nozzle flow channel 6 is 13 mm, and the aperture of its bottom is 0.35 - 1.5 mm. The diameter of the small hole is very small. Under the action of natural gravity and liquid surface tension, the eye drops in the flow channel will not flow back into the eye medicine bottle body from the nozzle flow channel 6, realizing physical isolation.

[0033] As an implementation manner, the top of the nozzle 4 is provided with a nozzle end face 12, and the diameter of the nozzle end face 12 is 3.2 - 3.5 mm. According to Taylor's law, the liquid drop volume control range is 0.05 ± 0.01 ml.

[0034] As an implementation manner, a nozzle flange 8 is provided in the middle of the nozzle 4. The nozzle flange 8 is matched with the top of the bottle mouth, which can better realize automatic feeding and prevent foreign objects from entering the bottle from the bottle mouth end face, and is more beautiful at the same time.

[0035] As an implementation manner, a sealing plug 5 is provided on the inner side of the top of the bottle cap 3, and the sealing plug 5 cooperates with the nozzle drip orifice 11, so as to seal the drip orifice 11.

[0036] As an implementation manner, anti-slip stripes are provided on the outer surface of the bottle cap 3 to increase the friction force and facilitate screwing the bottle cap.

[0037] As an implementation manner, a theft-proof ring 2 is connected to the bottom of the bottle cap 3 through a connecting bridge 14, and the theft-proof ring 2 is limited on the eye drop bottle body 1. After the bottle cap 3 is opened, the theft-proof ring 2 will remain on the bottle, meeting the FDA requirements.

[0038] For an eye drop administration device provided by the present utility model for preventing a large amount of liquid medicine from being ejected due to excessive force, during use, the bottle body is inverted and tilted, and the nozzle drip orifice 11 is aligned with the eye. The liquid medicine first contacts the lower end surface 19 of the nozzle inner plug. Since the aperture of the nozzle inner plug liquid guide groove 16 starting from the lower end surface of the nozzle is small, under the action of natural gravity and liquid surface tension, the liquid medicine will not enter the nozzle inner plug liquid guide groove. By squeezing the bottle body, under the action of the external extrusion force and capillary action, the liquid medicine gradually fills the micro liquid storage chamber formed by the outer surface 17 of the nozzle inner plug and the inner surface 20 of the nozzle through the nozzle inner plug liquid guide groove 16, and then flows through the nozzle flow channel 6. Under the action of the liquid surface tension of the liquid medicine, at the nozzle end surface 12, it gradually converges into liquid drops, and its volume will not change greatly, so as to achieve uniform liquid drops. At the same time, because the liquid medicine needs to pass through the small hole liquid guide groove 19, the micro liquid storage chamber, and the slender nozzle flow channel 6 to reach the nozzle end surface 12 and converge into drops, no matter from which direction, even if excessive force is applied, there will be no phenomenon of liquid drop ejection.

[0039] The present utility model uses specific examples to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. An eye drop delivery device for preventing excessive force from causing a large amount of liquid to be sprayed out, comprising an eye drop bottle body, a nozzle installed in the bottle mouth of the eye drop bottle body, and a bottle cap screwed on the outside of the bottle mouth through an external thread of the bottle mouth, characterized in that: A nozzle flow channel is opened in the middle of the nozzle, and the nozzle flow channel is a trumpet-shaped structure with a larger upper part and a smaller lower part, and a nozzle dripping port is arranged at the top. A nozzle inner plug is arranged below the nozzle flow channel, and a nozzle inner plug liquid guide groove is arranged on the side of the nozzle inner plug. The two ends of the nozzle inner plug liquid guide groove are respectively connected with the outer surface of the nozzle inner plug and the lower end surface of the nozzle inner plug, and the outer surface of the nozzle inner plug is connected with the bottom of the nozzle flow channel.

2. The eye drops delivery device for preventing excessive force from causing a large amount of liquid to be sprayed out according to claim 1, characterized in that: The two sides of the lower part of the nozzle are respectively provided with a nozzle outer cylindrical surface and a nozzle inner surface, the nozzle outer cylindrical surface is tightly matched with the inner wall of the bottle mouth, and the nozzle inner surface is gap matched with the nozzle inner plug.

3. The eye drops delivery device for preventing excessive force from causing a large amount of liquid to be sprayed out according to claim 2, characterized in that: An outer nozzle clamping ring is arranged between the outer cylindrical surface of the nozzle and the inner side wall of the bottle mouth.

4. The eye drops delivery device for preventing excessive force from causing a large amount of liquid to be sprayed out according to claim 2, characterized in that: The outer surface of the nozzle inner plug is provided with a nozzle inner plug groove, and a nozzle inner clamping ring is provided between the nozzle inner plug groove and the nozzle.

5. The eye drops delivery device for preventing excessive force from causing a large amount of liquid to be sprayed out according to claim 1, characterized in that: The length of the nozzle flow channel is 13 mm, and the aperture of the bottom thereof is 0.35-1.5 mm.

6. The eye drops delivery device for preventing excessive force from causing a large amount of liquid to be sprayed out according to claim 1, characterized in that: A nozzle end surface is provided on the top of the nozzle, and the diameter of the nozzle end surface is 3.2-3.5 mm.

7. The eye drops delivery device for preventing excessive force from causing a large amount of liquid to be sprayed out according to claim 1, characterized in that: A nozzle flange is arranged in the middle of the nozzle, and the nozzle flange matches with the top of the bottle mouth.

8. The eye drops delivery device for preventing excessive force from causing a large amount of liquid to be sprayed out according to claim 1, characterized in that: A sealing plug is provided on the inner side of the top of the bottle cap, and the sealing plug is matched with the dripping port of the nozzle.

9. The eye drops delivery device for preventing excessive force from causing a large amount of liquid to be sprayed out according to claim 1, characterized in that: The outer surface of the bottle cap is provided with anti-slip stripes.

10. The eye drops delivery device for preventing excessive force from causing a large amount of liquid to be sprayed out according to claim 1, characterized in that: The bottom of the bottle cap is connected with an anti-theft ring via a connecting bridge, and the anti-theft ring is located on the eye drops bottle body.

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