Sampling device for preparing eye drops

Abstract

The utility model discloses a sampling device for eye drop preparation, which belongs to the technical field of eye drop preparation and comprises a sampling tube and a rubber cap sleeved at the upper end of the sampling tube, a connecting cap is arranged in the upper end of the sampling tube in a threaded connection manner, a one-way valve is arranged on the top surface of the connecting cap, a through hole is formed in the top surface of the connecting cap, and the through hole is communicated with the sampling tube. And a pressed assembly is arranged in the through hole. The gas sampling device has the beneficial effects that through the rod body, the spring and the sealing ball, the through hole is blocked by the sealing ball under the action of the elastic force of the spring, so that the through hole is opened only when the internal pressure reaches a certain value when the rubber cap is extruded, and gas in the rubber cap enters the sampling tube; the situation that gas in the rubber cap enters the sampling tube due to slight stress deformation, and a sample in the sampling tube leaks out is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of eye drop configuration, in particular to a sampling device for eye drop configuration. Background Art

[0002] Eye drops can generally be divided into two categories: anti-inflammatory and eye fatigue relief. During the production process of eye drops, after various data configurations, a sampling device will be used to sample the configured eye drops for subsequent data testing and collection.

[0003] Most eye drop sampling devices use a dropper to absorb the eye drops into the interior, and then drop the eye drops in the dropper into the interior of the test tube. The suction and discharge of the eye drops are performed by pressing and loosening the rubber cap on the dropper. However, during use, the staff holds the rubber cap of the dropper and inserts one end of the dropper into the eye drops for suction. After the dropper sucks in the eye drops, the staff still holds the rubber cap of the dropper to take out the dropper and move it to the test tube. During this process, the hand holding the rubber cap is unstable or affected by the external environment, which can easily cause the rubber cap to be compressed. Any slight compression deformation of the rubber cap will affect the eye drops in the dropper, which can easily cause the eye drops in the dropper to leak out. Utility Model Content

[0004] The utility model aims to solve the above-mentioned technical problems and provides a sampling device for eye drop preparation.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A sampling device for eye drop preparation, comprising a sampling tube and a rubber cap sleeved on the upper end of the sampling tube, wherein the upper end of the sampling tube is internally threadedly connected with a connecting cap, a top surface of the connecting cap is provided with a one-way valve, a through hole is opened on the top surface of the connecting cap, and a pressure-bearing component is provided inside the through hole;

[0007] The pressure component includes a rod body and a sealing ball for sealing the lower end of the through hole. The lower end of the rod body movably penetrates the through hole and is fixedly connected to the sealing ball. The rod body is connected to the upper surface of the connecting cap through a spring.

[0008] As a further description of the above technical solution:

[0009] The rod body includes a connecting rod and a mounting block fixed to the upper end of the connecting rod. The lower end surface of the mounting block and the upper end surface of the connecting cap are respectively provided with mounting holes for the upper and lower ends of the spring to be inserted into. The upper end of the sealing ball is provided with a threaded hole for threaded connection of the connecting rod.

[0010] As a further description of the above technical solution:

[0011] An annular groove is provided on the inner top surface of the connecting cap and a sealing ring matched with the sealing ball is arranged in the annular groove.

[0012] As a further description of the above technical solution:

[0013] A limiting ring matched with the connecting cap is arranged inside the sampling tube, and a sealing gasket is arranged at the connection between the limiting ring and the connecting cap.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0015] In the utility model, through the rod body, spring and sealing ball, the sealing ball blocks the through hole under the action of the spring elastic force, so that when the rubber cap is squeezed, the internal pressure reaches a certain value, the through hole will be opened, and the gas in the rubber cap will enter the sampling tube, effectively preventing the gas in the rubber cap from entering the sampling tube due to slight deformation under force, causing the sample in the sampling tube to leak out.

[0016] In the utility model, by providing a connecting rod, a mounting block, a threaded hole and a sealing ring, it is convenient for workers to assemble the various components and facilitate subsequent maintenance and replacement. At the same time, by controlling the depth of the connecting rod screwed into the threaded hole, the elastic force of the spring is adjusted, that is, the extrusion force that the rubber cap can withstand is adjusted, so that the air in the rubber cap is not easily squeezed into the sampling tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the appearance structure of a sampling device provided according to an embodiment of the utility model is shown;

[0018] Figure 2 An exploded schematic diagram of the sampling device structure provided according to an embodiment of the utility model is shown;

[0019] Figure 3 An exploded schematic diagram of a pressure-bearing component structure provided according to an embodiment of the utility model is shown;

[0020] Figure 4 A partial structural cross-sectional view of a sampling device provided according to an embodiment of the utility model is shown.

[0021] Legend: 1. Sampling tube; 2. Rubber cap; 3. Connecting cap; 4. Sealing ball; 5. Through hole; 6. Spring; 7. Connecting rod; 8. Mounting block; 9. Sealing ring; 10. Limiting ring; 11. Check valve; 12. Threaded hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1:

[0024] As shown in 1-4, a sampling device for eye drop preparation includes a sampling tube 1 and a rubber cap 2 sleeved on the upper end of the sampling tube 1, a connecting cap 3 is internally threadedly connected to the upper end of the sampling tube 1, a one-way valve 11 is provided on the top surface of the connecting cap 3, an input end of the one-way valve 11 is connected to the inside of the sampling tube 1, and an output end of the one-way valve 11 is connected to the inside of the rubber cap 2, a through hole 5 is opened on the top surface of the connecting cap 3, and a pressure-bearing component is provided inside the through hole 5;

[0025] The pressure-bearing component includes a rod body and a sealing ball 4 for sealing the lower end of the through hole 5. The lower end of the rod body movably penetrates the through hole 5 and is fixedly connected to the sealing ball 4. The rod body is connected to the upper surface of the connecting cap 3 through a spring 6. The rubber cap 2 is squeezed to increase its internal pressure. The increased pressure causes the sealing ball 4 to move downward, thereby opening the through hole 5.

[0026] Furthermore, the rod body includes a connecting rod 7 and a mounting block 8 fixed on the upper end of the connecting rod 7. The lower end surface of the mounting block 8 and the upper end surface of the connecting cap 3 are respectively provided with mounting holes for the upper and lower ends of the spring 6 to be inserted. The upper end of the sealing ball 4 is provided with a threaded hole 12 for threaded connection with the connecting rod 7. The sealing ball 4 is threadedly connected to the connecting rod 7. By controlling the depth of the connecting rod 7 screwed into the threaded hole 12, the compression amount of the spring 6 is controlled, and the elastic force of the spring 6 is controlled, that is, the compressive deformation amount of the rubber cap 2 is controlled. The rubber cap 2 is squeezed so that the air pressure in the rubber cap 2 is greater than the elastic force of the spring 6, so that the sealing ball 4 can move downward, so that the through hole 5 is opened, and then the rubber cap 2 is flattened, and then the rubber cap 2 is gradually loosened, the sealing ball 4 is reset to block the through hole 5, and when the rubber cap 2 returns to its original state, the air inside the sampling tube 1 is absorbed through the one-way valve 11, and the eye drops are sucked into the sampling tube 1.

[0027] Furthermore, a limiting ring 10 that cooperates with the connecting cap 3 is provided inside the sampling tube 1, and a sealing gasket is provided at the connection between the limiting ring 10 and the connecting cap 3. When the connecting cap 3 is tightened and installed, the sealing gasket is tightly squeezed to effectively ensure the sealing of the connection between the connecting cap 3 and the limiting ring 10.

[0028] Embodiment 2:

[0029] As shown in 1-4, an annular groove is provided on the top surface of the connecting cap 3 and a sealing ring 9 matching the sealing ball 4 is provided in the annular groove. After the staff removes the sealing ball 4, the sealing ring 9 can be removed, which makes it convenient for the staff to replace and install the sealing ring 9, effectively ensuring the sealing of the connection between the sealing ball 4 and the sealing ring 9.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sampling device for preparing eye drops, comprising a sampling tube (1) and a rubber cap (2) sleeved on the upper end of the sampling tube (1), characterized in that: The upper end of the sampling tube (1) is internally threadedly connected to a connecting cap (3), a top surface of the connecting cap (3) is provided with a one-way valve (11), a top surface of the connecting cap (3) is provided with a through hole (5), and a pressure-bearing component is provided inside the through hole (5); The pressure-bearing component comprises a rod body and a sealing ball (4) for sealing the lower end of the through hole (5); the lower end of the rod body movably penetrates the through hole (5) and is fixedly connected to the sealing ball (4); and the rod body is connected to the upper surface of the connecting cap (3) via a spring (6).

2. A sampling device for eye drop preparation according to claim 1, characterized in that: The rod body comprises a connecting rod (7) and a mounting block (8) fixed to the upper end of the connecting rod (7); the lower end surface of the mounting block (8) and the upper end surface of the connecting cap (3) are respectively provided with mounting holes for the upper and lower ends of the spring (6) to be inserted into; and the upper end of the sealing ball (4) is provided with a threaded hole (12) for threaded connection with the connecting rod (7).

3. A sampling device for eye drop preparation according to claim 1, characterized in that: An annular groove is provided on the inner top surface of the connecting cap (3), and a sealing ring (9) matching with the sealing ball (4) is provided in the annular groove.

4. A sampling device for eye drop preparation according to claim 1, characterized in that: A limiting ring (10) matching with the connecting cap (3) is provided inside the sampling tube (1), and a sealing gasket is provided at the connection between the limiting ring (10) and the connecting cap (3).

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