The residual liquid removal structure and method in eye dropper

Abstract

This invention discloses a residual liquid removal structure and method for an eye dropper, comprising: a bottle body, a dropper shell, a dropper column, and an annular sealing gasket. The dropper shell is connected to the bottle body and has a flow channel. An outlet is located at the top of the flow channel, and an annular sealing gasket is located at the connection between the outlet and the flow channel. The dropper column is located within the flow channel of the dropper shell, and includes a T-shaped section and a conical section. The conical section passes through the annular sealing gasket and the outlet and extends outward from the dropper shell. The inner ring of the annular sealing gasket is sealed to the outer wall of the conical section. Several guide grooves are evenly distributed on the dropper column. The advantages of this invention are: after dispensing, releasing the bottle body pushes the liquid film adhering to the conical section of the dropper column and the liquid suspended at the end of the conical section away from the conical section, allowing it to be dispensed into the user's eye without waste. Furthermore, it keeps the conical section exposed to air dry, thus preventing bacterial growth.

Description

Technical Field

[0001] This invention relates to an eye dropper, and more particularly to a residual liquid removal structure and method in an eye dropper. Background Technology

[0002] In daily life, we often use eye drops to protect our eyes. To accurately apply the eye drops, we usually use an eye dropper. However, after applying the eye drops, the last drop of eye drops is left hanging at the end of the dropper column, and a layer of eye drop film adheres to the exposed dropper column. Currently, we shake the eye dropper to remove the residual eye drops. This not only wastes the eye drops, but also fails to remove the eye drop film on the dropper column when shaking it. This film, when in contact with air for a long time, can easily breed bacteria and contaminate the dropper column, affecting its use. Summary of the Invention

[0003] The purpose of this invention is to provide a residual liquid removal structure and method for an eye dropper, which can effectively remove residual eye drops and eye drop film on the dropper column to prevent bacteria from growing and contaminating the dropper column after prolonged contact with air.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a residual liquid removal structure and method in an eye dropper, comprising: a bottle body, a dropper shell, a dropper column, and an annular sealing gasket. The dropper shell is connected to the bottle body. A flow channel penetrating the dropper shell is provided at the center of the dropper shell. An outlet with a diameter larger than the flow channel diameter is provided at the top of the flow channel. An annular sealing gasket is provided at the connection between the outlet and the flow channel. A dropper column is provided in the flow channel of the dropper shell. The dropper column includes: a T-shaped section connected to the flow channel and a conical section connected to the top of the T-shaped section. The conical section extends outward from the dropper shell after passing through the annular sealing gasket and the outlet. The inner ring of the annular sealing gasket is sealed and fitted to the outer wall of the conical section. Several guide grooves are evenly distributed along the circumference of the dropper column. The bottom opening of the guide groove is located on the bottom wall of the T-shaped section, and the top opening of the guide groove is located on the conical section below the annular sealing gasket.

[0005] The residual liquid removal method of the residual liquid removal structure in the eye dropper is as follows: The dropper is inverted vertically, and the bottle is squeezed. The liquid in the bottle enters the flow channel and flows downward along the guide groove on the dropper column. At this time, the liquid collects on the annular sealing gasket and pushes it downward. Under the combined pushing force of the air and the liquid in the bottle, the annular sealing gasket moves downward and no longer forms a seal with the conical section of the dropper column. The liquid flows downward along the conical section and collects at the end of the conical section, forming a droplet that falls downward. During this process, the liquid expels the air from the outlet as it passes through, creating a low-pressure environment. Then, the bottle is released, and the liquid at the end of the conical section remains suspended. The annular sealing gasket returns to its original position and seals against the conical section. The air quickly flows back into the low-pressure outlet. During this backflow, the air gathers towards the center of the outlet. After touching the conical section of the droplet, the air flows downward along the conical section, pushing away the liquid film adhering to the conical section and the liquid suspended at the end of the conical section.

[0006] Furthermore, in the aforementioned residual liquid removal structure and method of the eye dropper, the liquid outlet is a cone shape that is larger at the top and smaller at the bottom.

[0007] Furthermore, in the aforementioned residual liquid removal structure and method of the eye dropper, the distance between the end of the conical section of the dropper column and the top of the dropper shell is 1 to 2.5 mm.

[0008] Furthermore, in the aforementioned residual liquid removal structure and method of the eye dropper, the annular sealing gasket and the dropper shell are integrally injection molded.

[0009] Furthermore, in the aforementioned residual liquid removal structure and method of the eye dropper, the inner ring of the annular sealing gasket is conical in shape, and the taper of the inner ring wall is the same as the taper of the conical segment.

[0010] The advantages of this invention are: after the dispensing is completed, simply loosening the bottle body will push the liquid film adhering to the conical segment of the dispensing column and the liquid suspended at the end of the conical segment away from the conical segment and into the user's eyes, thus avoiding waste and keeping the conical segment exposed to the air dry, which makes it less likely for bacteria to grow. Attached Figure Description

[0011] Figure 1 This is a cross-sectional schematic diagram of the residual liquid removal structure in the eye dropper of the present invention.

[0012] Figure 2 This is a schematic diagram of the structure in the residual liquid removal structure of the eye dropper described in this invention, in which the medicine liquid displaces air from the outlet.

[0013] Figure 3This is a schematic diagram of the residual liquid removal structure in the eye dropper described in this invention, in which air flows back into the liquid outlet to push the liquid at the end of the conical section away from the conical section. Detailed Implementation

[0014] The technical solution of the present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0015] like Figure 1 As shown, the residual liquid removal structure in the eye dropper of the present invention includes: a bottle body 1, a dropper shell 2, a dropper column 3, and an annular sealing gasket 4. The dropper shell 2 is connected to the bottle body 1. A flow channel 21 penetrating the dropper shell 2 is provided at the center of the dropper shell 2. An outlet 22 with a diameter larger than the diameter of the flow channel 21 is provided at the top of the flow channel 21. The outlet 22 is a conical shape with a larger top and a smaller bottom. An annular sealing gasket 4 is provided at the connection between the outlet 22 and the flow channel 21. The annular sealing gasket 4 and the dropper shell 2 are integrally injection molded. The integral injection molding can prevent the annular sealing gasket 4 from loosening with the dropper shell 2, which would result in a poor sealing effect. A droplet column 3 is provided in the flow channel 21 of the droplet shell 2. The droplet column 3 includes a T-shaped section 31 connected to the flow channel 21 and a conical section 32 connected to the top of the T-shaped section 31. The conical section 32 passes through the annular sealing gasket 4 and the outlet 22 and extends outward from the droplet shell 2. The distance between the end of the conical section 32 of the droplet column 3 and the top of the droplet shell 2 is 1 to 2.5 mm. The inner ring of the annular sealing gasket 4 is sealed and fitted to the outer wall of the conical section 32. The inner ring of the annular sealing gasket 4 is conical in shape, and the taper of the inner ring wall is the same as the taper of the conical section 32. This increases the contact surface between the annular sealing gasket 4 and the conical section 32, thereby improving the sealing effect. Several guide grooves 33 are evenly distributed along the circumference of the droplet column 3. The bottom opening of the guide groove 33 is located on the bottom wall of the T-shaped section 31, and the top opening of the guide groove 33 is located on the conical section 32 below the annular sealing gasket 4.

[0016] The residual liquid removal method of the residual liquid removal structure in the eye dropper is as follows: The dropper is vertically inverted, and the bottle 1 is squeezed. The liquid in the bottle 1 enters the flow channel 21 and flows downward along the guide groove 33 on the dropper column 3. At this time, the liquid collects on the annular sealing gasket 4 and pushes it downward. The annular sealing gasket 4, under the combined pushing force of air and liquid in the bottle 1, moves downward and no longer seals with the conical section 32 of the dropper column 3. The liquid flows downward along the conical section 32 and collects at the end of the conical section 32, forming droplets that fall downward. During this process, the liquid displaces the air in the outlet 22 when passing through it, causing the outlet 22 to be in a low-pressure state. Figure 2As shown. Then, the bottle body 1 is released, and the liquid medicine at the end of the conical section 32 remains suspended. The annular sealing gasket 4 returns to its original position and seals tightly against the conical section 32. The air quickly flows back to the outlet 22, which is under low pressure. During the backflow, the air gathers towards the center of the outlet 22. After the air touches the conical section 32 of the drip column 3, it generates an air wave downwards. The air wave flows downwards along the conical section, pushing the liquid medicine film attached to the conical section 32 and the liquid medicine suspended at the end of the conical section 32 away from the conical section 32, as shown. Figure 3 As shown.

[0017] The principle behind this is based on the fluid dynamics phenomenon of water splashing upwards when a heavy object falls into water. This phenomenon is as follows: When a heavy object falls into water, it breaks the surface tension of the water and sinks. During its descent, the object initially compresses the water around it, creating a relatively stable cavity. As the object continues to fall, the water, no longer under pressure, rushes into the cavity. After filling the cavity, the water continues to flow towards the center until a collision occurs. This collision generates a cone-shaped splash that shoots upwards. Since both air and water are fluids, the fluid dynamics phenomena of water and air can be mutually applied.

[0018] When we squeeze bottle 1, the liquid flowing outward along the drip column 3 passes through outlet 22, which is equivalent to a heavy object falling into water. The liquid displaces some of the air in outlet 22, making outlet 22 a low-pressure state. This low-pressure outlet 22 is equivalent to a cavity formed in the water. When bottle 1 is released, no liquid comes out, and the air quickly flows back into outlet 22, which is equivalent to water rushing into the cavity. When the air flows back into outlet 22, since the annular sealing gasket 4 has been reset and sealed to the conical section 32 of the drip column 3, the air can only flow in outlet 22. After filling outlet 22, the air continues to flow towards the center like water. However, the air is blocked by the drip column 3 located at the center of outlet 22. After the air collides with the drip column 3, it generates an air wave downward. The air wave flows downward along the conical section 32 of the drip column 3.

[0019] The outlet 22 is set into a cone shape that is larger at the top and smaller at the bottom. When air flows back into the outlet 22, the inner wall of the cone of the outlet 22 will cause the air to vibrate. The air vibrates and flows towards the cone section 32 of the droplet column 3. The air vibration is more conducive to removing the residual medicine on the cone section 32.

[0020] The distance between the end of the conical section 32 of the drip column 3 and the top of the drip shell 2 is controlled between 1 and 2.5 mm. If the end of the conical section 32 is located in the outlet 22, the liquid suspended at the end of the conical section 32 will easily block the outlet 22. After the bottle body 1 is released, the liquid suspended at the end of the conical section 32 will interfere with the air backflow and cannot achieve automatic removal of residual liquid. If the end of the conical section 32 extends too far from the drip shell 2, when the air wave formed by the backflow of air in the outlet 22 flows to the end of the conical section 32, too much energy is lost and the remaining energy is insufficient to push the liquid suspended at the end of the conical section 32 away from the conical section 32. Therefore, the distance between the end of the conical section 32 of the drip column 3 and the top of the drip shell 2 is controlled between 1 and 2.5 mm. This can prevent the liquid from clogging the outlet 22 and ensure that the air wave formed by the air flowing back into the outlet 22 has enough energy to push away the liquid suspended at the end of the conical section 32.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the invention and not to limit it. Although the invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the invention should be covered within the scope of protection of the claims of the invention.

Claims

1. A residual liquid removing structure in an eye drop dispenser and a residual liquid removing method thereof, characterized by: The eye drop device comprises a bottle body, a drop shell, a drop column, and a ring-shaped sealing gasket. The drop shell is connected to the bottle body. A flow channel is arranged at the center of the drop shell. An outlet with a larger diameter than the flow channel is arranged at the top of the flow channel. A ring-shaped sealing gasket is arranged at the joint of the outlet and the flow channel. A drop column is arranged in the flow channel of the drop shell. The drop column comprises a T-shaped section connected to the flow channel, and a tapered section connected to the top of the T-shaped section. The tapered section extends outward beyond the drop shell after passing through the ring-shaped sealing gasket and the outlet. The inner ring of the ring-shaped sealing gasket is in sealing contact with the outer sidewall of the tapered section. A plurality of flow guide grooves are uniformly distributed along the circumference of the drop column. The bottom opening of the flow guide groove is located on the bottom wall of the T-shaped section. The top opening of the flow guide groove is located on the tapered section below the ring-shaped sealing gasket. The residual liquid removal method of the eye drop device is as follows: the eye drop device is vertically inverted, and the bottle body is squeezed. The liquid medicine in the bottle body enters the flow channel and flows downward along the flow guide grooves on the drop column. At this time, the liquid medicine collects on the ring-shaped sealing gasket and pushes the ring-shaped sealing gasket downward. After being pushed by the air and liquid medicine in the bottle body, the ring-shaped sealing gasket moves downward and no longer forms a seal with the tapered section of the drop column. The liquid medicine flows downward along the tapered section and gathers at the end of the tapered section to form a liquid drop that falls downward. In this process, the liquid medicine expels the air in the outlet when passing through the outlet, causing the outlet to be in a low-pressure state. Then, the bottle body is released, and the liquid medicine at the end of the tapered section is suspended. The ring-shaped sealing gasket returns to its original position and forms a seal with the tapered section. Air quickly flows back into the outlet in a low-pressure state. During the backflow process, the air converges towards the center of the outlet. After the air touches the tapered section of the drop column, it flows downward along the tapered section. Then, the air pushes the liquid film attached to the tapered section and the liquid medicine suspended at the end of the tapered section away from the tapered section. The outlet is in a tapered shape with a large top and a small bottom.

2. The residual liquid removing structure in an eyedrop dispenser and the residual liquid removing method thereof according to claim 1, characterized in that: The distance between the end of the tapered section of the drop column and the top of the drop shell is 1-2.5 mm.

3. The residual liquid removing structure in an eyedrop dispenser and the residual liquid removing method thereof according to claim 2, characterized in that: The ring-shaped sealing gasket is integrally injection molded with the drop shell.

4. The residual liquid removing structure in an eyedrop dispenser and the residual liquid removing method thereof according to claim 1 or 2 or 3, characterized in that: The inner ring of the ring-shaped sealing gasket is in a tapered shape, and the taper of the inner ring wall is the same as that of the tapered section.

5. The residual liquid removing structure in an eyedrop dispenser and the residual liquid removing method thereof according to claim 4, characterized in that: ​

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