An experimental sampling structure capable of avoiding leakage

Abstract

This utility model relates to the field of medical sampling equipment technology, and discloses a leakage-avoiding experimental sampling structure, including an outer cylinder, an inner cylinder, and a threaded rod. The upper end face of the outer cylinder is fixedly provided with a flange, and grooves are formed on both sides of the upper end face of the flange. Nipple-shaped protrusions are fixedly provided on both sides of the lower end face of the outer cylinder. A limiting ring is fixedly provided in the middle of the outer wall of the inner cylinder, and locking blocks are fixedly provided on both sides of the inner cylinder above the limiting ring. A first rubber stopper is fixedly provided on the lower end face of the inner cylinder, and an internal threaded hole is formed on the upper end face of the inner cylinder. A rotating block is fixedly provided on the upper end face of the threaded rod, and a second rubber stopper is fixedly provided on the lower end face of the threaded rod. The inner cylinder and the limiting ring are slidably disposed inside the outer cylinder. This utility model effectively avoids liquid sample leakage and allows for more accurate sample collection.

Description

Technical Field

[0001] This utility model relates to the field of medical sampling equipment technology, and in particular to a laboratory sampling structure that can prevent leakage. Background Technology

[0002] Experimental sampling structures are commonly used instruments in medical research. Researchers use these structures to systematically select a subset of individuals from a large population of target liquids as samples for data collection, intervention, and statistical analysis. These structures are frequently used in clinical medicine, epidemiology, basic medicine, preventive medicine, and health service research. Leak-proof experimental sampling structures allow for safe, sterile, and precise handling of liquids, preventing contamination, waste, cross-contamination, and erroneous results caused by leaks.

[0003] However, existing experimental sampling devices are prone to leakage of liquid samples from the nipple after collecting bodily fluids or secretions, endangering the safety of medical or laboratory personnel and exposing them to the risk of pathogen infection or chemical reagent damage. Furthermore, the device cannot precisely control the sample volume, potentially resulting in insufficient sample volume to meet research needs, or excessive sample volume leading to waste of samples and reagents.

[0004] Therefore, this application provides an experimental sampling structure that can avoid leakage, in order to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a leakage-avoiding experimental sampling structure. This device can effectively prevent liquid sample leakage and make the sampling volume more accurate.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A leakage-avoidable experimental sampling structure includes an outer cylinder, an inner cylinder, and a threaded rod. The upper end face of the outer cylinder is fixedly provided with a flange, and grooves are formed on both sides of the upper end face of the flange. The lower end face of the outer cylinder is fixedly provided with nipples on both sides. A limiting ring is fixedly provided in the middle of the outer wall of the inner cylinder. A locking block is fixedly provided on both sides of the outer periphery of the inner cylinder above the limiting ring. A first rubber plug is fixedly provided on the lower end face of the inner cylinder. An internal threaded hole is formed on the upper end face of the inner cylinder. A rotating block is fixedly provided on the upper end face of the threaded rod, and a second rubber plug is rotatably provided on the lower end face of the threaded rod.

[0007] Furthermore, the inner cylinder is slidably disposed inside the outer cylinder, the limiting ring is slidably disposed inside the outer cylinder, and the two locking blocks are respectively slidably disposed inside the two grooves.

[0008] Furthermore, the second rubber stopper is slidably disposed inside the inner cylinder.

[0009] Furthermore, the threaded rod is threadedly engaged with the internal threaded hole.

[0010] Furthermore, the outer wall of the rotating block is provided with anti-slip texture.

[0011] Furthermore, the first rubber plug is slidably disposed inside the outer cylinder and is located at the upper end of the two nipples.

[0012] Furthermore, winglets are fixedly provided on both sides of the outer wall of the inner cylinder near the upper end face.

[0013] This utility model has the following beneficial effects: 1. The present invention proposes an experimental sampling structure that can prevent leakage. After the liquid sample is extracted using the instrument, the inner cylinder is pushed into the outer cylinder and the inner cylinder is rotated 90° from front to left. The two nipples are blocked by the first rubber stopper, which can effectively prevent the internal sample from leaking through the nipples. The two locking blocks, the limiting ring and the locking setting along the edge can effectively prevent the two sliders from sliding out of the two grooves and opening the two nipples.

[0014] 2. The present invention proposes an experimental sampling structure that can prevent leakage. When using this instrument to extract samples, the rotating block drives the threaded rod to rotate. The threaded rod engages with the internal threaded hole to move the second rubber stopper up and down, which can make the sample extraction more accurate. During the extraction process, the anti-slip texture can prevent slippage. Attached Figure Description

[0015] Figure 1 This is an overall isometric schematic diagram of the present invention; Figure 2 This is an isometric schematic diagram of the outer cylinder of this utility model; Figure 3 This is an isometric schematic diagram of the inner cylinder of this utility model; Figure 4 This is a bottom view of the inner cylinder of this utility model; Figure 5 This is a schematic diagram of the threaded rod connection structure of this utility model; Figure 6 This is a schematic cross-sectional view of the present invention.

[0016] Legend: 1. Outer cylinder; 2. Inner cylinder; 3. Edge; 4. Groove; 5. Wing; 6. Rotating block; 7. Nipple; 8. Limiting ring; 9. Locking block; 10. First rubber plug; 11. Internal threaded hole; 12. Anti-slip texture; 13. Second rubber plug; 14. Threaded rod. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not 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 effort are within the protection scope of the present utility model.

[0018] Reference Figure 1 — Figure 6 An embodiment of this utility model provides a leakage-avoiding experimental sampling structure, including an outer cylinder 1, an inner cylinder 2 and a threaded rod 14. An edge 3 is fixedly provided on the upper end face of the outer cylinder 1, and grooves 4 are provided on both sides of the upper end face of the edge 3. Nipples 7 are fixedly provided on both sides of the lower end face of the outer cylinder 1.

[0019] Specifically, when using this device, align the locking blocks 9 on both sides of the outer wall of the inner cylinder 2 with the two grooves 4 respectively. Then, fix the outer cylinder 1 and pull the inner cylinder 2 upward. At the same time, drive the limiting ring 8, the two locking blocks 9, the two wing pieces 5, the threaded rod 14, the rotating block 6, and the second rubber plug 13 upward. The first rubber plug 10 separates from the inner bottom surface of the outer cylinder 1, which can open the two nipples 7. When the positions of the two locking blocks 9 are both higher than the edge 3, rotate the inner cylinder 2 90° from front to left. At the same time, drive the limiting ring 8, the two locking blocks 9, the two wing pieces 5, the threaded rod 14, the rotating block 6, and the second rubber plug 13 to rotate 90° from front to left. This will lock the edge 3 between the two locking blocks 9 and the limiting ring 8, which can prevent the outer cylinder 1 from moving up and down and prevent the first rubber plug 10 from blocking the two nipples 7. Insert the instrument into the target population. Hold the upper end of the outer wall of the inner cylinder 2 with one hand, and rotate the rotating block 6 from front to left with the other hand to drive the threaded rod 14 to engage with the internal threaded hole 11, causing the second rubber stopper 13 to rise. A portion of the target population is then extracted through the two nipples 7 and drawn into the inner cylinder 2 as a sample. After extraction, raise the instrument completely above the liquid surface and clean the remaining liquid on the outer wall of the outer cylinder 1. Then, invert the instrument so that the two nipples 7 face upwards and the rotating block 6 faces downwards. Hold the upper end of the outer wall of the inner cylinder 2 with one hand, and rotate the rotating block 6 from front to right with the other hand to drive the threaded rod 14 to engage with the internal threaded hole 11, causing the second rubber stopper 13 to descend, allowing all the sample from the outer cylinder 1 to be drawn into the inner cylinder 2. Then, move the inner cylinder 2 from front to back... Rotate 90° to the left, simultaneously rotating the limiting ring 8, two locking blocks 9, two flaps 5, threaded rod 14, rotating block 6, and second rubber plug 13 from front to left by 90°, aligning the two locking blocks 9 with the two grooves 4 respectively. Then, fix the outer cylinder 1 and push the inner cylinder 2 upward, simultaneously moving the limiting ring 8, two locking blocks 9, two flaps 5, threaded rod 14, rotating block 6, and second rubber plug 13 upward, causing the first rubber plug 10 to block the two nipples 7. Continue rotating the inner cylinder 2 from front to left by 90°, simultaneously rotating the limiting ring 8, two locking blocks 9, two flaps 5, threaded rod 14, rotating block 6, and second rubber plug 13 from front to left by 90°, to prevent the two locking blocks 9 from sliding out of the two grooves 4 and opening the two nipples 7. Liquid can be drawn into the instrument through the two nipples 7. By locking the flange 3 between the two locking blocks 9 and the limiting ring 8, the outer cylinder 1 can be limited, preventing it from moving up and down during sample extraction. Two grooves 4 allow two locking blocks 9 to slide inside, thereby opening the two nipples 7.

[0020] Reference Figure 3 , Figure 4A limiting ring 8 is fixedly installed in the middle of the outer wall of the inner cylinder 2. Two locking blocks 9 are fixedly installed on both sides of the inner cylinder 2 above the limiting ring 8. A first rubber plug 10 is fixedly installed on the lower end face of the inner cylinder 2. An internally threaded hole 11 is opened on the upper end face of the inner cylinder 2. The inner cylinder 2 is slidably installed inside the outer cylinder 1. The limiting ring 8 is slidably installed inside the outer cylinder 1. The two locking blocks 9 are slidably installed inside the two grooves 4 respectively. The first rubber plug 10 is slidably installed inside the outer cylinder 1 and is located above the two nipples 7. Wings 5 ​​are fixedly installed on both sides of the upper end face of the outer wall of the inner cylinder 2. The fixed installation of the first rubber plug 10 increases its friction inside the outer cylinder 1, preventing it from rotating on its own.

[0021] Specifically, the first rubber stopper 10 can block the two nipples 7 to prevent internal samples from leaking through them. The threaded rod 14, engaged with the internal threaded hole 11, drives the second rubber stopper 13 to move up and down, allowing for more precise sampling. The two flaps 5 provide a point of force for the operator to push the inner cylinder 2 into the outer cylinder 1 later.

[0022] Reference Figure 5 , Figure 6 A rotating block 6 is fixedly installed on the upper end face of the threaded rod 14, and a second rubber plug 13 is rotatably installed on the lower end face of the threaded rod 14. The second rubber plug 13 is slidably installed inside the inner cylinder 2. The threaded rod 14 is threadedly engaged with the internal threaded hole 11, and the outer wall of the rotating block 6 is provided with anti-slip texture 12.

[0023] Specifically, the rotating block 6 provides better gripping for the rotation of the threaded rod 14, which in turn drives the second rubber stopper 13 to move up and down to extract samples. The anti-slip texture 12 prevents slippage. Rotating the second rubber stopper 13 reduces friction generated during its rotation within the inner cylinder 2.

[0024] Working principle: When using this device, align the two locking blocks 9 with the two grooves 4 respectively to fix the outer cylinder 1. Pull the inner cylinder 2 upward and rotate it 90° from front to left to engage the two locking blocks 9, the limiting ring 8, and the flange 3. Then, insert the device into the target liquid and extract the sample by rotating the rotating block 6. After sampling, clean the liquid remaining on the outer wall of the outer cylinder 1. Then, continue to rotate the rotating block 6 to extract all the sample from the inner cylinder 2. Next, rotate the inner cylinder 2 90° from front to left and push it upward to block the two nipples 7 with the second rubber stopper 13, and continue to rotate the inner cylinder 2 90° from front to left.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An experimental sampling structure capable of avoiding leakage, comprising an outer cylinder (1), an inner cylinder (2) and a threaded rod (14), characterized in that: The outer cylinder (1) has a fixed flange (3) on its upper end face. Grooves (4) are provided on both sides of the upper end face of the flange (3). Nips (7) are fixed on both sides of the lower end face of the outer cylinder (1). A limiting ring (8) is fixedly provided in the middle of the outer wall of the inner cylinder (2). A locking block (9) is fixedly provided on both sides of the outer periphery of the inner cylinder (2) at the upper end of the limiting ring (8). A first rubber plug (10) is fixedly provided on the lower end face of the inner cylinder (2). An internal threaded hole (11) is provided on the upper end face of the inner cylinder (2). A rotating block (6) is fixedly provided on the upper end face of the threaded rod (14). A second rubber plug (13) is rotatably provided on the lower end face of the threaded rod (14).

2. The experimental sampling structure capable of avoiding leakage according to claim 1, wherein: The inner cylinder (2) is slidably disposed inside the outer cylinder (1), the limiting ring (8) is slidably disposed inside the outer cylinder (1), and the two locking blocks (9) are respectively slidably disposed inside the two grooves (4).

3. The experimental sampling structure of claim 1, wherein: The second rubber stopper (13) is slidably disposed inside the inner cylinder (2).

4. The leak-proof experimental sampling structure according to claim 1, wherein: The threaded rod (14) is threaded into the internal threaded hole (11).

5. The leak-proof experimental sampling structure according to claim 1, wherein: The outer wall of the rotating block (6) is provided with anti-slip texture (12).

6. The leak-proof experimental sampling structure according to claim 1, wherein: The first rubber plug (10) is slidably disposed inside the outer cylinder (1) and the first rubber plug (10) is located at the upper end of the two nipples (7).

7. The leak-proof experimental sampling structure according to claim 1, wherein: The inner cylinder (2) has winglets (5) fixedly installed on both sides of the upper end face of the outer wall.

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