Dropper bottle for eye drops
By designing a metering eye drop bottle with a one-way valve and adjusting plunger, the problems of inaccurate metering, complicated operation, and insufficient sealing performance of traditional eye drop bottles have been solved. This achieves accurate metering and efficient sealing, improving the user's ease of operation and the stability of the medication.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG CHENXIN FODU PHARM CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-07-14
AI Technical Summary
Traditional eye drop bottles are difficult to use for precise dispensing, are complicated to operate, have insufficient sealing performance, and are prone to leakage or contamination of the solution.
A metered eye drop bottle with a structure including a one-way valve and an adjusting plunger was designed. Through multiple seals and ergonomic design, it can achieve on-demand metered titration, ensuring the cleanliness and stability of the medicine solution.
It achieves precise dosing of eye drops, improves the accuracy and ease of use, prevents leakage and external contamination, and extends the product's lifespan.
Smart Images
Figure CN224484309U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of quantitative eye drop bottle technology, and in particular to a quantitative eye drop bottle. Background Technology
[0002] Eye drops are a commonly used drug dosage form. In order to ensure the therapeutic effect and medication safety, it is crucial to accurately control the dosage of eye drops each time.
[0003] Traditional eye drop bottles typically dispense the medication by squeezing the bottle. This method requires users to rely on experience and feel to control the amount of medication dispensed, making it difficult to guarantee the accuracy and consistency of each application.
[0004] For example, patent document CN202510158241.7 discloses a quantitative drop bottle. Although this drop bottle improves the quantitative drop solution to some extent, it still has the following drawbacks:
[0005] Its quantitative structure is relatively complex and its production cost is high, which is not conducive to large-scale production and market promotion.
[0006] During use, the quantitative adjustment operation is not simple enough and is quite difficult to operate.
[0007] The sealing performance of the bottle needs to be improved. During storage, the liquid medicine is easily exposed to the outside air, which can lead to deterioration or contamination of the medicine and affect its efficacy.
[0008] Therefore, it is necessary to design a simple, easy-to-operate, and well-sealed eye drop quantitative drop bottle. Utility Model Content
[0009] To solve one of the aforementioned technical problems, the present invention provides the following technical solution: a quantitative eye drop bottle, comprising a storage bottle, a storage chamber inside the storage bottle, an external thread on the outer wall of the top bottleneck of the storage bottle, a main cap screwed onto the external thread, a titration component integrally formed on the top of the main cap, a sealing cap sleeve sealed to the outer wall of the titration component, a pusher installed inside the sealing cap sleeve, an internal titration channel of the titration component communicating with the oral cavity of the top bottleneck, and a one-way valve installed inside the oral cavity of the top bottleneck, the one-way valve being used to control the opening and closing of the connection between the oral cavity and the internal titration channel.
[0010] Based on any of the above technical solutions, a further optimization is made as follows: the top of the sealing cap sleeve is integrally formed with a thin-walled elastic spherical surface. The thin-walled elastic spherical surface deforms after being pressed and returns to its original position after the pressure is removed. When the thin-walled elastic spherical surface is deformed by downward pressure, it can drive the pusher to press the one-way valve vertically downward and connect the oral cavity of the tube with the internal titration channel.
[0011] Based on any of the above technical solutions, a further optimization is made as follows: the titration component includes a central convex tube integrally formed at the top center of the main bottle cap, and an internal titration channel is provided inside the central convex tube. The top of the internal titration channel is open and the bottom is connected to the inside of the liquid storage chamber through the tube opening of the top bottleneck.
[0012] Based on any of the above technical solutions, a further optimization is made as follows: the one-way valve includes an arc-shaped seat fixedly installed at the top center of the oral cavity of the top bottleneck, with openings on both sides of the arc-shaped seat, a return spring fixedly installed at the top center of the arc-shaped seat, and a rubber ball valve core fixedly installed on the top of the return spring, the top of the rubber ball valve core sealingly abutting against the bottom of the internal titration channel and blocking it.
[0013] Based on any of the above technical solutions, a further optimization is made as follows: the pushing component includes a top-pressing long screw installed in the internal titration channel, the top of the top-pressing long screw is fixedly connected to the bottom center of the thin-walled elastic spherical surface, the bottom of the top-pressing long screw is used to push the rubber ball valve core downward, and can overcome the elastic force of the return spring under the action of external pressing pressure to connect the bottom of the internal titration channel with the inside of the tube cavity.
[0014] Based on any of the above technical solutions, a further optimization is made as follows: an adjusting plunger is threaded onto the outer wall of the top pressure long screw, and the adjusting plunger is movable and sealed within the internal titration channel.
[0015] Based on any of the above technical solutions, a further optimization is made: after the internal titration channel is filled with eye drops, when the external pressure disappears, the return spring can push the rubber ball valve core to reset.
[0016] Based on any of the above technical solutions, a further optimization is made as follows: a plurality of elastic sealing rings are provided at intervals along the circumference of the outer side wall of the central convex tube, and each elastic sealing ring is used to seal and cooperate with the annular groove on the inner side wall of the sealing cover sleeve.
[0017] Based on any of the above technical solutions, a further optimization is made by providing inwardly recessed pinching parts on the outer side walls of both sides of the middle part of the liquid storage bottle.
[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0019] 1. This utility model achieves on-demand quantitative titration of eye drops by setting up a one-way valve, adjusting plunger and other structures. Users can preset the titration volume by adjusting the position of the adjusting plunger to meet different medication dosage requirements and improve the accuracy of medication.
[0020] 2. This utility model adopts a multi-seal design, including the sealing connection between the sealing cap sleeve and the titration component, the sealing fit between the elastic sealing ring and the annular groove, and the closing seal of the one-way valve, which can effectively prevent the leakage of the medicine and the entry of external contaminants, and ensure the cleanliness and storage stability of the medicine.
[0021] 3. The structural design of this utility model conforms to the ergonomic principle. For example, the inwardly recessed finger pinching parts on both sides of the middle of the liquid storage bottle are easy to hold stably, and the thin-walled elastic spherical surface is easy to press. The overall operation process is simple and easy to understand, which improves the user's operation convenience and comfort.
[0022] 4. The components in this utility model are securely connected, such as the threaded engagement between the main bottle cap and the liquid storage bottle, and the integral molding of the titration component and the main bottle cap. Key components such as the return spring and the rubber ball valve core are durable and can function stably for a long time, thus extending the product's service life. Attached Figure Description
[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or components are generally identified by similar reference numerals. In the drawings, the elements or components are not necessarily drawn to scale.
[0024] Figure 1 This is a schematic diagram of the main structure of this utility model.
[0025] Figure 2 This is a cross-sectional structural diagram of the present invention.
[0026] Figure 3 This is a schematic diagram of the test structure of this utility model.
[0027] Figure 4 This is a partially enlarged schematic diagram of the internal structure of this utility model.
[0028] Figure 5 This is a schematic diagram of the internal structure of the internal titration channel of this utility model when filled with eye drops.
[0029] In the diagram, 1. Storage bottle; 2. Storage chamber; 3. Top neck; 4. External thread; 5. Main cap; 6. Sealing cap sleeve; 7. Internal titration channel; 8. Tube cavity; 9. Thin-walled elastic spherical surface; 10. Rubber ball valve core; 11. Return spring; 12. Adjusting plunger; 13. Central convex tube; 14. Arc-shaped seat; 15. Opening; 16. Return spring; 17. Top pressure long screw; 18. Elastic sealing ring; 19. Finger pinch part. Detailed Implementation
[0030] The embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of the present utility model, and are therefore merely examples and should not be construed as limiting the scope of protection of the present utility model. The specific structure of the present utility model is as follows: Figures 1-5 As shown in the image.
[0031] Example 1: A metered eye drop bottle includes a storage bottle 1, a storage chamber 2 inside the storage bottle 1, an external thread 4 on the outer wall of the top bottleneck 3 of the storage bottle 1, a main cap 5 screwed onto the external thread 4, a titration component integrally formed on the top of the main cap 5, a sealing cap sleeve 6 sealingly fitted on the outer wall of the titration component, a pusher installed inside the sealing cap sleeve 6, an internal titration channel 7 of the titration component communicating with the tube cavity 8 of the top bottleneck 3, and a one-way valve installed in the tube cavity 8 of the top bottleneck 3 for controlling the opening and closing of the connection between the tube cavity 8 and the internal titration channel 7.
[0032] Before leaving the factory, the liquid storage chamber 2 of this eye drop bottle is filled with an appropriate amount of eye drops. When the user uses this eye drop bottle to dissolve eye drops, first press the thin-walled elastic spherical surface 9 at the top of the sealing cap 6 with his finger and deform it to its maximum extent. The pressing force drives the pusher to move axially along the internal titration channel 7, which will eventually press against the rubber ball valve core 10 and overcome the elastic force of the return spring 11. At this time, the tube cavity 8 at the rubber ball valve core 10 is connected to the internal titration channel 7.
[0033] While maintaining pressure, invert the eye drop bottle 180 degrees and hold for 3-5 seconds. During this process, the eye drops will flow downwards due to gravity and enter the internal titration channel 7 through the connecting part, filling the internal titration channel 7 between the adjusting plunger 12 and the oral cavity 8 with eye drops. (The current volume of eye drops can be pre-adjusted by controlling the position of the adjusting plunger 12 to achieve on-demand quantitative titration.) While maintaining pressure, invert the drop bottle, allowing gravity to cause the medication to flow downwards through the connecting part into the internal titration channel 7 until it fills the channel between the adjusting plunger 12 and the oral cavity 8. The position of the adjusting plunger 12 can be pre-adjusted to control the titration volume.
[0034] Hold for 3-5 seconds, then straighten the bottle again. Remove the sealing cap 6 along with the attached pusher. Then, lift the bottle and bring it close to your eye to instill the measured amount of eye drops from the internal titration channel 7 into your eye, achieving quantitative titration. Removing the sealing cap 6 along with the pusher fully exposes the top of the internal titration channel 7 without disturbing the measured amount of medication within the channel, thus preventing changes in the medication volume due to improper operation.
[0035] The storage chamber 2 of the storage bottle 1 is used to store eye drops. The main bottle cap 5 is screwed onto the top neck 3 of the storage bottle 1 via external threads 4. The internal titration channel 7 of the titration component is connected to the tube cavity 8 of the top neck 3. A one-way valve controls the opening and closing of the connection between the tube cavity 8 and the internal titration channel 7. The sealing cap sleeve 6 is fitted onto the outside of the titration component, and its internal pushing element can act on the one-way valve. It can be seen that the connection structure of each component is stable, the external threads 4 facilitate the installation and removal of the main bottle cap 5, the sealing cap sleeve 6 ensures the sealing of the titration component and prevents leakage of the medicine, and the one-way valve effectively controls the flow of the medicine and prevents backflow.
[0036] The liquid storage chamber 2 stores the liquid medicine; the main bottle cap 5 and the liquid storage bottle 1 cooperate to form a closed space; the titration component provides a channel for liquid medicine titration; the sealing cap sleeve 6 provides sealing and protection; the pusher is used to trigger the action of the one-way valve; the one-way valve controls the flow of liquid medicine.
[0037] When not performing the dripping operation, the closed state of the one-way valve can work with the sealing cap sleeve 6 to form a multiple seal. Even if the liquid storage bottle 1 is squeezed or tilted to a certain extent, it can greatly reduce the possibility of accidental leakage of the liquid and provide additional protection for the liquid.
[0038] Based on any of the above technical solutions, a further optimization is made: the top of the sealing cap sleeve 6 is integrally formed with a thin-walled elastic spherical surface 9. The thin-walled elastic spherical surface 9 deforms after being pressed and returns to its original position after the pressure is removed. When the thin-walled elastic spherical surface 9 is deformed downward under pressure, it can drive the pusher to press the one-way valve vertically downward and connect the oral cavity 8 with the internal titration channel 7.
[0039] The liquid storage chamber 2 is pre-filled with medicine when it leaves the factory; when in use, press the thin-walled elastic spherical surface 9 to deform it, and drive the pusher to move axially through the pressure transmission. The pusher presses against the rubber ball valve core 10 and overcomes the elastic force of the return spring 11, so that the tube cavity 8 is connected to the internal titration channel 7.
[0040] The pre-filled liquid makes it convenient for users to use directly; the thin-walled elastic spherical surface 9 is easily deformable, making it easy for users to apply pressure, and the force can be transmitted to the pusher through deformation; the axial displacement design of the pusher is precise, which can effectively trigger the action of the one-way valve.
[0041] The deformation range of the thin-walled elastic spherical surface 9 can serve as an intuitive operational feedback, allowing users to judge whether the pressure is applied correctly by touch. This avoids insufficient pressure causing the one-way valve to not open completely, thus affecting the flow of the medicine and indirectly improving the accuracy of operation.
[0042] Based on any of the above technical solutions, a further optimization is made as follows: the titration component includes a central convex tube 13 integrally formed at the top center of the main bottle cap 5, and an internal titration channel 7 is provided inside the central convex tube 13. The top of the internal titration channel 7 is open and the bottom is connected to the inside of the liquid storage chamber 2 through the tube cavity 8 of the top bottleneck 3.
[0043] The central convex tube 13 of the titration component and the main bottle cap 5 are integrally molded to ensure the integrity and stability of their connection. The internal titration channel 7 inside the central convex tube 13 serves as the path for the flow of the liquid. Its top is open to provide an outlet for the liquid to drip out, while its bottom is connected to the inside of the storage chamber 2 through the tube opening 8 of the top bottleneck 3. This allows the liquid in the storage chamber 2 to enter the internal titration channel 7 through the tube opening 8, forming a complete channel from storage to dripping.
[0044] The one-piece molded structure eliminates the connection gap between the central convex tube 13 and the main bottle cap 5, greatly reducing the risk of leakage of medicine from the connection point and improving the overall sealing performance; the internal titration channel 7 has a clear path, and the design of being open at the top and connected at the bottom allows the medicine to flow smoothly, avoiding problems of medicine stagnation or blockage caused by unreasonable channel design; the central convex tube 13 is located at the top center of the main bottle cap 5, which conforms to ergonomic operating habits and makes it easy for users to aim the medicine at the eye when applying it.
[0045] The central convex tube 13 not only provides structural support for the internal titration channel 7, but its own convex shape can also protect the top opening 15 of the internal titration channel 7 to a certain extent, reducing the possibility of contamination caused by accidental contact of the opening 15 by external objects; the internal titration channel 7 is the key channel for transporting the medicine from the storage chamber 2 to the eye, realizing the directional flow and quantitative dripping function of the medicine, and is the core path component of the entire drop bottle quantitative titration.
[0046] Based on any of the above technical solutions, a further optimization is made as follows: the one-way valve includes an arc-shaped seat 14 fixedly installed at the top center of the oral cavity 8 of the top bottleneck 3. Openings 15 are provided on both sides of the arc-shaped seat 14. A return spring 16 is fixedly installed at the top center of the arc-shaped seat 14. A rubber ball valve core 10 is fixedly installed on the top of the return spring 16. The top of the rubber ball valve core 10 seals against the bottom of the internal titration channel 7 and blocks it.
[0047] The one-way valve is fixedly installed at the top center of the tube cavity 8 of the top bottleneck 3 via an arc-shaped seat 14. The openings 15 on both sides of the arc-shaped seat 14 provide a path for the flow of the liquid medicine. The return spring 16 is fixed at the top center of the arc-shaped seat 14. The rubber ball valve core 10 connected to its top, in its natural state, relies on the elastic force of the return spring 16 to seal against the bottom of the internal titration channel 7, thereby blocking the channel. When subjected to the external force of the pushing component, the rubber ball valve core 10 overcomes the elastic force of the return spring 16 and moves downward, releasing the blockage of the bottom of the internal titration channel 7. At this time, the liquid medicine can flow through the openings 15 on both sides of the arc-shaped seat 14 and enter the internal titration channel 7 through the tube cavity 8.
[0048] The fixed installation method of the arc-shaped seat 14 ensures the overall structural stability of the one-way valve and prevents it from loosening; the design of the two side openings 15 does not obstruct the flow of the liquid medicine, ensuring smooth flow of the liquid medicine; the return spring 16 can provide stable elasticity, so that the rubber ball valve core 10 can reliably block the channel in the non-stressed state, preventing the liquid medicine from flowing back or leaking; the rubber ball valve core 10 has good elasticity and sealing performance, and the contact with the bottom of the internal titration channel 7 can achieve a tight seal, and the rubber material has good compatibility with the liquid medicine, and is not likely to produce a chemical reaction that affects the properties of the liquid medicine.
[0049] Based on any of the above technical solutions, a further optimization is made as follows: the pushing component includes a top-pressing long screw 17 that is fitted and installed in the internal titration channel 7. The top of the top-pressing long screw 17 is fixedly connected to the bottom center of the thin-walled elastic spherical surface 9. The bottom of the top-pressing long screw 17 is used to push the rubber ball valve core 10 downward, and can overcome the elastic force of the return spring 16 under the action of external pressing pressure to connect the bottom of the internal titration channel 7 with the inside of the tube cavity 8.
[0050] The top-pressing long screw 17 of the pusher is installed in the internal titration channel 7. Its top is fixed to the bottom center of the thin-walled elastic spherical surface 9, and its bottom can act on the rubber ball valve core 10. When the user presses the thin-walled elastic spherical surface 9, the pressing force is transmitted to the top-pressing long screw 17 through the fixed part, causing it to move downward along the axial direction of the internal titration channel 7, and then push the rubber ball valve core 10 downward. This pushing force can overcome the elastic force of the return spring 16, causing the rubber ball valve core 10 to move, and finally realize the communication between the bottom of the internal titration channel 7 and the inside of the tube cavity 8.
[0051] The top-pressure long screw 17 is fitted inside the internal titration channel 7, ensuring its guiding and stable movement and preventing deviation; the connection method of being fixed to the thin-walled elastic spherical surface 9 ensures that the pressing pressure can be transmitted efficiently and reduce force loss; the design can overcome the elasticity of the return spring 16, ensuring the reliability of the channel connection and ensuring that the liquid can flow smoothly; the structural design of the top-pressure long screw 17 is adapted to the position of the internal titration channel 7 and the rubber ball valve core 10, making the operation smooth.
[0052] The top-pressing long screw 17 acts as a force transmission medium, transmitting the external pressing pressure on the thin-walled elastic spherical surface 9 to the rubber ball valve core 10. It is a key component for triggering the action of the one-way valve. Through its axial movement, it pushes the rubber ball valve core 10, thereby controlling the opening and closing between the internal titration channel 7 and the oral cavity 8, providing conditions for the medicine to enter the internal titration channel 7.
[0053] Example 2: Compared with Example 1, this example also includes the following technical features:
[0054] Based on any of the above technical solutions, a further optimization is made: an adjusting plunger 12 is threaded onto the outer wall of the top pressure long screw 17, and the adjusting plunger 12 is movable and sealed within the internal titration channel 7.
[0055] The adjusting plunger 12 is screwed onto the outer wall of the pressure-adjusting long screw 17 via a threaded structure, and its axial position on the pressure-adjusting long screw 17 can be changed by rotation. Simultaneously, the adjusting plunger 12 and the internal titration channel 7 have a movable yet sealed fit, allowing it to move synchronously with the pressure-adjusting long screw 17 while maintaining a tight seal with the inner wall of the channel to prevent leakage of the drug solution from the fitting gap. By adjusting the position of the adjusting plunger 12, the volume of the internal titration channel 7 between it and the nozzle 8 can be changed, thereby achieving quantitative control of the amount of drug solution titrated in a single transaction.
[0056] The threaded connection allows for precise and stable adjustment of the position of the adjusting plunger 12, facilitating accurate setting of the titration volume by the user and ensuring reliable maintenance of the set position after adjustment. The movable fit ensures that the adjusting plunger 12 does not affect the normal axial movement of the top-pressure screw 17, guaranteeing that the force transmission function of the pushing component is not interfered with. The sealed fit effectively prevents leakage of the liquid from the gap between the adjusting plunger 12 and the inner wall of the channel when the liquid flows in the internal titration channel 7, ensuring the accuracy of the dosage.
[0057] Based on any of the above technical solutions, a further optimization is made: after the internal titration channel 7 is filled with eye drops, when the external pressing pressure disappears, the return spring 16 can push the rubber ball valve core 10 to reset.
[0058] When the internal titration channel 7 is filled with eye drops, if the external pressure is removed, the return spring 16 will deform and reset due to its own elastic restoring force, thereby pushing the rubber ball valve core 10 to move upward, so that it re-seals and abuts against the bottom of the internal titration channel 7, cutting off the connection between the internal titration channel 7 and the oral cavity 8, and preventing the eye drops in the reservoir 2 from continuing to flow into the internal titration channel 7.
[0059] The reset function of the return spring 16 is timely and reliable. It can initiate the reset action the moment the external pressing pressure disappears, ensuring that the rubber ball valve core 10 quickly closes the channel and avoids continuous flow of medicine leading to inaccurate dosing. After reset, the rubber ball valve core 10 can tightly seal the channel, effectively preventing the medicine in the internal titration channel 7 from flowing back into the storage chamber 2, and ensuring the stability of the measured amount of medicine. The spring has a simple and durable structure and can stably achieve the reset function for a long time, reducing the risk of component failure.
[0060] The return spring 16 pushes the rubber ball valve core 10 to reset after the external pressing pressure disappears. It is the key power source for closing the channel. Its core function is to control the disconnection between the internal titration channel 7 and the oral cavity 8, ensuring that the amount of medicine liquid titrated in a single titration is the pre-filled quantitative amount, avoiding excessive outflow or backflow of medicine liquid, and ensuring the accuracy of quantitative titration.
[0061] Based on any of the above technical solutions, a further optimization is made as follows: a plurality of elastic sealing rings 18 are provided at intervals along the circumference of the outer side wall of the central convex tube 13, and each elastic sealing ring 18 is used to seal and cooperate with the annular groove on the inner cavity side wall of the sealing cover sleeve 6.
[0062] Several elastic sealing rings 18 are distributed circumferentially on the outer wall of the central convex tube 13. When the sealing gland sleeve 6 is fitted onto the outside of the titration component, each elastic sealing ring 18 will correspond to and cooperate with the annular groove on the inner wall of the sealing gland sleeve 6. The elastic sealing ring 18 deforms due to its own elasticity and fills the gap between the two, thereby achieving a seal between the central convex tube 13 and the sealing gland sleeve 6.
[0063] Multiple spaced elastic sealing rings 18 form a multi-seal structure. Even if a single sealing ring experiences slight wear or seal failure, the remaining sealing rings can still maintain a sealing effect, greatly improving the overall sealing reliability. The fit between the elastic sealing rings 18 and the annular groove is simple and efficient, achieving a good seal without complicated operations. The elastic characteristics of the elastic sealing rings 18 allow them to adapt to a certain degree of dimensional deviation, ensuring a tight fit during assembly or use.
[0064] Based on any of the above technical solutions, a further optimization is made by providing inwardly recessed pinching portions 19 on the outer side walls of both sides of the middle part of the liquid storage bottle 1.
[0065] The inwardly recessed finger-grip portion 19 on the outer side walls of the middle part of the liquid storage bottle 1 conforms to the physiological structure of human fingers gripping. When the user operates, the fingers can naturally fit into the recessed area, and the friction generated by the contact between the fingers and the finger-grip portion 19 enhances the stability of the hand gripping the liquid storage bottle 1.
[0066] The inwardly recessed structure conforms to the shape of the fingers, conforms to ergonomic principles, improves grip comfort, and reduces hand fatigue caused by prolonged gripping or repetitive operation. The recessed area increases the friction between the fingers and the liquid reservoir 1, which can effectively prevent the liquid reservoir 1 from slipping from the hand during operation, especially suitable for users with sweaty hands or those who are not skilled in operation. The symmetrically arranged finger pinching parts 19 on both sides facilitate operation for left- and right-handed users, improving the product's versatility.
[0067] The instructions for using this eye drop bottle are as follows:
[0068] Preparation stage: Before leaving the factory, the liquid storage chamber 2 of this eye drop bottle is filled with an appropriate amount of eye drops, which the user can take directly.
[0069] Triggering channel connection: When using the device, the user first presses the thin-walled elastic spherical surface 9 on the top of the sealing cap sleeve 6 with their finger, deforming it to its maximum extent. The pressing pressure drives the pushing component (top-pressing long screw 17) to move axially along the internal titration channel 7. The bottom of the top-pressing long screw 17 will press against the rubber ball valve core 10 in the one-way valve component and overcome the elastic force of the return spring 16. At this time, the tube cavity 8 at the rubber ball valve core 10 is connected to the internal titration channel 7.
[0070] Filling the dose-controlled solution: While maintaining the pressing position, invert the eye drop bottle 180 degrees and hold for 3-5 seconds. During this process, the eye drops flow downwards under gravity, entering the internal titration channel 7 through the connecting part, and filling the internal titration channel 7 between the adjusting plunger 12 and the tube opening 8 with eye drops (the position of the adjusting plunger 12 can be pre-adjusted to control the current volume of eye drops, achieving on-demand dosing).
[0071] Returning to center and removing components: After holding for 3-5 seconds, return the bottle to center. At this time, the external pressure will disappear, and the return spring 16 will push the rubber ball valve core 10 to reset, closing the connection between the tube cavity 8 and the internal titration channel 7. Then, remove the sealing cap sleeve 6 along with the pusher fixed to it, so that the top of the internal titration channel 7 is open.
[0072] Instilling into the eye: Pick up the bottle and bring the top opening 15 of the internal titration channel 7 close to the eye. The measured amount of eye drops in the internal titration channel 7 can then be instilled into the eye to complete the quantitative titration.
[0073] Throughout the use, the user can firmly grip the bottle body through the inwardly recessed pinch parts 19 on both sides of the middle of the liquid storage bottle 1 to ensure stable operation.
[0074] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model. For those skilled in the art, any alternative improvements or transformations made to the implementation of this utility model fall within the protection scope of this utility model.
[0075] Any aspects of this utility model not described in detail are known to those skilled in the art.
Claims
1. A metered eye drop bottle, characterized in that: The device includes a storage bottle with a storage chamber inside. An external thread is provided on the outer wall of the top bottleneck of the storage bottle, and a main cap is screwed onto the external thread. A titration component is integrally formed on the top of the main cap. A sealing cap sleeve is sealed onto the outer wall of the titration component. A pusher is installed inside the sealing cap sleeve. The internal titration channel of the titration component is connected to the oral cavity of the top bottleneck. A one-way valve is installed inside the oral cavity of the top bottleneck, and the one-way valve is used to control the connection between the oral cavity and the internal titration channel.
2. The eye drop metering bottle according to claim 1, characterized in that: The top of the sealing cap sleeve is integrally formed with a thin-walled elastic spherical surface. The thin-walled elastic spherical surface deforms after being pressed and returns to its original position after the pressure is removed. When the thin-walled elastic spherical surface is deformed by downward pressure, it can drive the pusher to press the one-way valve vertically downward and connect the oral cavity of the tube with the internal titration channel.
3. The eye drop metering bottle according to claim 2, characterized in that: The titration component includes a central convex tube integrally formed at the top center of the main bottle cap, and an internal titration channel is provided inside the central convex tube. The top of the internal titration channel is open and the bottom is connected to the inside of the liquid storage chamber through the tube opening of the top bottleneck.
4. The eye drop metering bottle according to claim 3, characterized in that: The one-way valve includes an arc-shaped seat fixedly installed at the top center of the tube cavity of the top bottleneck. Openings are provided on both sides of the arc-shaped seat. A return spring is fixedly installed at the top center of the arc-shaped seat. A rubber ball valve core is fixedly installed on the top of the return spring. The top of the rubber ball valve core seals against the bottom of the internal titration channel and blocks it.
5. The eye drop metering bottle according to claim 4, characterized in that: The pushing component includes a top-pressing long screw installed in the internal titration channel. The top of the top-pressing long screw is fixedly connected to the bottom center of the thin-walled elastic spherical surface. The bottom of the top-pressing long screw is used to push the rubber ball valve core downward, and can overcome the elastic force of the return spring under the action of external pressing pressure to connect the bottom of the internal titration channel with the inside of the tube cavity.
6. The eye drop metering bottle according to claim 5, characterized in that: An adjusting plunger is threaded onto the outer wall of the top-pressure long screw, and the adjusting plunger is movable and sealed within the internal titration channel.
7. The eye drop metering bottle according to claim 6, characterized in that: After the internal titration channel is filled with eye drops, the return spring can push the rubber ball valve core to reset when the external pressure disappears.
8. The eye drop metering bottle according to claim 7, characterized in that: Several elastic sealing rings are spaced apart on the outer wall of the central convex tube and arranged along its circumference. Each elastic sealing ring is used to seal with the annular groove on the inner wall of the sealing cover sleeve.
9. The eye drop metering bottle according to claim 8, characterized in that: The liquid storage bottle has inwardly recessed pinching parts on the outer side walls on both sides of the middle section.