A sampling tube

Abstract

This utility model relates to the field of sampling and detection technology, specifically to a sampling tube. It includes a tube body with conical heads machined at both ends. An inlet and an outlet are respectively opened on the free ends of the two conical heads. An arc-shaped groove is formed on the side wall of the tube body, and an elastic plate is fixed within the arc-shaped groove, sealing the groove. A first end cap and a second end cap are respectively fitted onto the outer sides of the two conical heads. Conical holes are machined within the first and second end caps, with the conical heads located within the conical holes. Both the first and second end caps are threaded to the tube body. A plug rod is integrally formed inside each of the first and second end caps, sealingly inserted into the inlet and outlet respectively. By pressing the elastic plate, negative pressure is generated to draw in urine. Upon release, sampling is automatically completed, requiring no additional tools or complex steps, thus simplifying the midstream urine collection process.

Description

Technical Field

[0001] This utility model relates to the field of sampling and detection technology, specifically to a sampling tube. Background Technology

[0002] Midstream urine collection requires a high degree of aseptic technique. Typically, a urine cup is used to collect the midstream urine before it is poured into a sampling tube. However, spillage is common during the transfer of urine from the cup to the sampling tube, and the collected volume is difficult to control.

[0003] In clinical medicine, the collection and preservation of other sterile body fluids, such as pleural effusion, peritoneal fluid, and cerebrospinal fluid, also involve similar issues during the collection process.

[0004] Patent document CN222285510U discloses a urine sampler. This design features a mid-stream urine control connector between the urine cup and the test tube. A movable ring in the handle pulls a steel cable, causing a cylinder inserted into a rubber bulb to move upwards, thus controlling the flow of mid-stream urine into the sampling test tube. The preceding and following streams of urine, with the cylinder blocking the internal hole of the rubber bulb, are discharged through a drain tube without flowing into the test tube, achieving free control over mid-stream urine sampling. A handle is added between the urine cup and the test tube, not only linking with the control connector but also keeping the sampler's hands away from the urine cup to prevent contamination. However, this design has a complex overall structure and high production costs. Utility Model Content

[0005] The main purpose of this invention is to provide a sampling tube that facilitates sampling of midstream urine.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0007] A sampling tube includes a tube body with conical heads machined at both ends. An inlet and an outlet are respectively opened at the free ends of the two conical heads. An arc-shaped groove is opened on the side wall of the tube body, and an elastic plate is fixed inside the arc-shaped groove, sealing the groove. A first end cap and a second end cap are respectively fitted onto the outer sides of the two conical heads. Conical holes are machined inside the first and second end caps, with the conical heads located within the conical holes. Both the first and second end caps are threaded to the tube body. A plug rod is integrally formed inside both the first and second end caps, and the two plug rods are respectively sealed and inserted into the inlet and outlet. The plug rods in the first and second end caps respectively seal the inlet and outlet. The first end cap is cylindrical, and the second end cap is a regular square prism, with the side length of the square prism's cross-section equal to the diameter of the cylindrical first end cap.

[0008] Specifically, the elastic plate is made of elastic transparent plastic.

[0009] Specifically, the tube body is made of medical-grade rigid plastic.

[0010] Specifically, the end of the plug rod facing the center of the tube is a pointed tip, and the plug rod is made of rubber.

[0011] Specifically, the first end cap and the second end cap are made of medical-grade rigid plastic.

[0012] Specifically, the first and second end caps are provided with internal threads, and both sides of the tube body are provided with external threads.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. By pressing the elastic plate to generate negative pressure, urine is drawn in, and sampling is automatically completed upon release. No additional tools or complicated steps are required, simplifying the midstream urine collection process. The amount of urine discharged can be controlled by squeezing the elastic plate, and combined with the controllable outlet diameter design, the amount of urine collected can be precisely adjusted to a single drop, improving the flexibility of testing.

[0015] 2. The integrally molded rubber plugs inside the first and second end caps tightly insert into the inlet and outlet, combined with the threaded connection design, ensuring complete sealing of urine during storage and transfer, preventing leakage or external contamination. The elastic plate seals the arc-shaped groove, further enhancing the overall airtightness of the tube body and preventing air or impurities from entering during sampling or storage.

[0016] 3. The square prism shape of the second end cap (with a side length equal to the diameter of the first end cap) effectively prevents the sampling tube from rolling on the table, improving placement stability. The cylindrical design of the first end cap is compatible with conventional test tube racks, facilitating batch storage and laboratory management, and optimizing space utilization and operational efficiency.

[0017] 4. The difference in shape between the first end cap (cylindrical) and the second end cap (square prism) visually distinguishes the inlet and outlet, preventing user confusion. During testing, ensure that urine exits from the outlet to avoid mixing with residual contaminated urine at the inlet, thus guaranteeing the accuracy of test results and reducing the risk of misoperation.

[0018] 5. The combination of medical-grade rigid plastic (tube body and first and second end caps) and flexible transparent plastic (elastic plate) ensures biocompatibility, corrosion resistance, and mechanical strength, making it suitable for reuse. The transparency of the elastic plate allows for visual observation of urine conditions (such as sediment or bubbles), while the elastic material of the rubber plug enhances sealing performance. These combined effects improve the user experience and reliability of the sampling tube, making it suitable for rapid sampling and accurate testing in medical settings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the present invention.

[0020] Figure 2 This is a front view of the present invention.

[0021] Figure 3 This is a top view of the present invention.

[0022] Figure 4 for Figure 3 Sectional view along the AA direction.

[0023] The components in the attached diagram are named as follows: 1. Tube body, 2. Elastic plate, 3. First end cap, 4. Second end cap, 5. Cone head, 6. Plug rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1: Refer to Figures 1-4 As shown, a sampling tube includes a tube body 1, which is made of medical-grade rigid plastic. Specifically, the tube body 1 is made of ABS or medical-grade PVC.

[0026] The tube body 1 has tapered heads 5 machined at both ends, with an inlet and an outlet respectively located on the free ends of the two tapered heads 5. An arc-shaped groove is formed on the side wall of the tube body 1, and an elastic plate 2 is fixed within the arc-shaped groove. The elastic plate 2 seals the arc-shaped groove and is made of elastic transparent plastic. Specifically, the elastic plate 2 is made of silicone or thermoplastic polyurethane. The elastic plate 2 and the tube body 1 are fixed together by hot pressing or adhesive bonding.

[0027] Two cone-shaped tips 5 are respectively fitted with a first end cap 3 and a second end cap 4 on their outer sides. Conical holes are machined into the first end cap 3 and the second end cap 4, and the cone-shaped tips 5 are located within these conical holes. The first end cap 3 and the second end cap 4 are made of medical-grade rigid plastic. Specifically, the first end cap 3 and the second end cap 4 are made of polypropylene or polycarbonate.

[0028] The first end cap 3 and the second end cap 4 are provided with internal threads, and the tube body 1 is provided with external threads on both sides. The first end cap 3 and the second end cap 4 are both threadedly connected to the tube body 1.

[0029] Both the first end cap 3 and the second end cap 4 have integrally formed plug rods 6. The two plug rods 6 are respectively sealed and inserted into the inlet and outlet. The plug rods 6 in the first end cap 3 and the second end cap 4 respectively seal the inlet and outlet. The end of the plug rod 6 facing the center of the tube body 1 is a pointed tip. The plug rod 6 is made of rubber.

[0030] When sampling the midstream urine in the urine cup is required, the first end cap 3 is separated from the tube body 1. The elastic plate 2 is pressed, squeezing out some air from the tube body 1, allowing the inlet to immerse in the urine in the cup. The elastic plate 2 is then released, creating negative pressure within the tube body 1 during its reduction process. This allows urine from the cup to enter the tube body 1 through the inlet. The first end cap 3 is then threaded onto the tube body 1, and the plug rod 6 inside the first end cap 3 seals the inlet.

[0031] When it is necessary to test the urine inside tube 1, the urine inside tube 1 is shaken well, causing the second end cap 4 to separate from tube 1. During the compression of the elastic plate 2, the urine can be discharged from the outlet. By controlling the deformation of the elastic plate 2, the amount of urine discharged from the outlet can be changed. At the same time, the diameter of the outlet can be controlled during the production of tube 1, thereby controlling the amount of urine discharged from the outlet of tube 1.

[0032] Example 2: Based on Example 1, referring to... Figure 1 and Figure 2 As shown, the first end cap 3 is cylindrical, and the second end cap 4 is a regular square prism. The side length of the cross-section of the square prism is equal to the diameter of the cylindrical first end cap 3.

[0033] When the sampling tube is squared, since the side length of the quadrangular cross-section is equal to the diameter of the cylindrical first end cap 3, the second end cap 4 can effectively prevent the sampling tube from rolling on the table, thus ensuring good stability.

[0034] The first end cap 3 is cylindrical and can be used with conventional sampling tube racks for storage.

[0035] Because the first end cap 3 and the second end cap 4 have different shapes, it is easy to distinguish the inlet and outlet of the tube body 1. When sampling from the urine cup, since the end of the tube body 1 on the inlet side is submerged in the urine, some urine remains between the first end cap 3 and the tube body 1 after the first end cap 3 is connected. During the waiting period for testing or transfer, this residual urine between the first end cap 3 and the tube body 1 will deteriorate. By distinguishing the inlet and outlet with the different shapes of the first end cap 3 and the second end cap 4, when the urine in the tube body 1 is drained for testing, the urine is discharged from the outlet of the tube body 1, which avoids the urine in the tube body 1 mixing with the residual urine between the first end cap 3 and the tube body 1, thus preventing it from affecting the accuracy of the test results.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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. A sampling tube, comprising a tube body (1), wherein conical tips (5) are machined at both ends of the tube body (1), characterized in that, Two cones (5) have inlets and outlets respectively on their free ends. The side wall of the tube body (1) has an arc groove. An elastic plate (2) is fixed in the arc groove. The elastic plate (2) seals the arc groove. A first end cap (3) and a second end cap (4) are respectively fitted on the outside of the two cones (5). A conical hole is machined in the first end cap (3) and the second end cap (4). The cones (5) are located in the conical holes. The first end cap (3) and the second end cap (4) are threaded to the tube body (1). A plug rod (6) is integrally formed in the first end cap (3) and the second end cap (4). The two plug rods (6) are respectively sealed and inserted into the inlet and outlet. The plug rods (6) in the first end cap (3) and the second end cap (4) seal the inlet and outlet respectively. The first end cap (3) is cylindrical and the second end cap (4) is a regular square prism. The side length of the cross section of the square prism is equal to the diameter of the cylindrical first end cap (3).

2. The sampling tube according to claim 1, characterized in that, The elastic plate (2) is made of elastic transparent plastic.

3. A sampling tube according to claim 1, characterized in that, The tube body (1) is made of medical-grade rigid plastic.

4. A sampling tube according to claim 1, characterized in that, The end of the plug rod (6) facing the center of the tube body (1) is a pointed end, and the plug rod (6) is made of rubber.

5. A sampling tube according to claim 1, characterized in that, The first end cap (3) and the second end cap (4) are made of medical-grade hard plastic.

6. A sampling tube according to claim 1, characterized in that, The first end cap (3) and the second end cap (4) are provided with internal threads, and the tube body (1) is provided with external threads on both sides.

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