A urine sampling collection device
By designing the structure of the urine sampling device, the position of the sealing plate and rubber stopper is controlled by a threaded rod to maintain air pressure balance and filter odors, thus solving the problems of odor emission and unstable air pressure during urine sampling, and improving the ease of operation and air cleanliness.
Patent Information
- Application Number
- CN202521245164.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-18
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-06-18
AI Technical Summary
Existing urine sampling devices emit odors and have difficulty maintaining air pressure balance during sample extraction, affecting ease of operation.
A urine sampling and collection device was designed, comprising a collection cylinder, a sampling tube, a sealing cap, a sealing cover, a threaded rod, a sealing sheet, a rubber stopper, and an odor-absorbing ring. The threaded rod controls the position of the sealing sheet and the rubber stopper to maintain air pressure balance, and the odor-absorbing ring filters out odors.
It effectively prevents the emission of urine odor, maintains air pressure balance, and improves the convenience of sampling operations and air cleanliness.
Smart Images

Figure CN224925174U_ABST
Abstract
Description
Technical Field
[0001] This utility model specifically relates to a urine sampling and collection device, belonging to the field of medical device technology. Background Technology
[0002] Urine is a liquid excretion produced by human metabolism, mainly composed of water, urea, uric acid, electrolytes, etc. It is formed after the kidneys filter blood and plays a role in excreting waste, regulating fluid balance, and reflecting health status. Changes in its composition and properties can indicate diseases or abnormal physiological states. In urine sampling and testing, 24-hour urine samples are test samples formed by collecting all urine from a person within 24 hours. They are mainly used for clinical diagnosis and disease assessment, such as the detection of urine protein quantification, creatinine clearance rate, and electrolyte excretion concentration. Currently, most samples are collected in containers and sent for testing. A portion of the sample is then extracted from inside the container. However, during extraction, the strong odor of urine often causes the odor to be released, and the sealed container is under negative pressure during sampling, making it difficult to drain the urine smoothly, which is inconvenient for operation and use. Utility Model Content
[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a urine sampling and collection device that avoids odor emissions during sample extraction, maintains air pressure balance inside the collection cylinder during extraction, improves sampling convenience, and facilitates control.
[0004] This utility model achieves the above-mentioned objective through the following technical solution: a urine sampling and collection device, comprising a collection cylinder, a sampling tube fixedly installed at the lower end of the collection cylinder, a sealing cap threadedly connected to the sampling tube, and a sealing cover threadedly connected to the upper end of the collection cylinder, a threaded rod threadedly connected to the sealing cover, a sealing plate fixedly installed at the lower end of the threaded rod, a connecting rod fixedly installed at the lower end of the sealing plate, a rubber stopper fixedly installed at the lower end of the connecting rod, the rubber stopper being inserted into the inside of the sampling tube, an odor-absorbing ring embedded inside the sealing cover, and a connecting tube fixedly installed in an array at the upper end of the sealing cover, one end of the connecting tube being connected to the odor-absorbing ring.
[0005] In use, first seal the lower end of the sampling tube with the sealing cap, then unscrew the sealing cap to leave the upper end of the collection tube open for urine collection. After collection, seal the upper end of the collection tube with the sealing cap, ensuring the rubber stopper is inserted into the sampling tube during sealing to improve the sealing effect. Then, send the sample for testing. When urine sampling and analysis are required, unscrew the sealing cap and place the collection tube on an external shelf. Attach the upper end of an external test tube to the sampling tube, then turn the threaded rod to lower it. The threaded rod lowers the sealing plate, connecting rod, and rubber stopper. The rubber stopper extends to the bottom of the sampling tube, allowing urine to be easily discharged through the tube. During urine discharge, the sealing plate releases the seal on one end of the connecting tube, connecting the upper end of the collection cylinder to the outside via the connecting tube and the odor-absorbing ring. This balances the air pressure at the upper end of the collection cylinder, preventing negative pressure. Furthermore, the gas overflowing from the upper end of the collection cylinder is filtered by the odor-absorbing ring, preventing the odor of urine from escaping and improving air cleanliness in the work area. After sampling, the threaded rod is reversed, causing the sealing plate and rubber stopper to rise, facilitating resealing of the connecting tube and sampling tube and improving the sealing effect during storage.
[0006] Furthermore, a groove is provided at the lower end of the inner side of the sealing cap, one end of the connecting tube is connected to the groove, and the sealing sheet is located inside the groove. When sealing the collecting cylinder, the sealing sheet is located inside the groove, so that the sealing sheet seals one end of the connecting tube. When the sealing sheet descends, the sealing sheet moves to the bottom of the groove, thereby connecting the upper space inside the collecting cylinder with the connecting tube through the groove.
[0007] Furthermore, the sampling tube is a double-layered tube. The inner layer of the sampling tube has a liquid outlet hole. When sealed, the rubber stopper is located at the liquid outlet hole, so that the rubber stopper seals the sampling tube. When the rubber stopper descends, it is located below the liquid outlet hole. The urine inside the collection tube flows into the outer layer through the liquid outlet hole and is discharged into the outer test tube through the space between the inner and outer layers.
[0008] Furthermore, the sealing cap is threadedly connected to the outer layer of the sampling tube, and an elastic plug is fixedly installed inside the sealing cap. The elastic plug is inserted into the inner layer of the sampling tube. Through the elastic plug, when collecting urine, it is easy to seal the outlet hole, preventing the collected urine from entering the space between the inner and outer layers of the sampling tube. After the sealing cap is installed, when the rubber plug is inserted into the sampling tube, the elastic plug is compressed, and the rubber plug seals the outlet hole.
[0009] Furthermore, a handle is fixedly installed on one side of the collection tube, the collection tube is made of transparent material, and scale lines are printed on the other side of the collection tube. The handle makes it easy to carry the whole thing, and the scale lines make it easy to observe the amount of urine collected.
[0010] Furthermore, a threaded tube is fixedly installed at the middle position of the upper end of the sealing cover, and the threaded rod is threadedly connected to the threaded tube. Through the threaded tube, when the threaded rod is turned, it is convenient for the threaded rod to move up and down along the threaded tube.
[0011] Furthermore, the lower end of the sealing cap is provided with an array of through holes, which are connected to the odor-absorbing ring, facilitating communication between the inside and outside of the collection tube and improving the odor absorption effect during use.
[0012] Furthermore, the sealing cap has an annular cavity inside, and the odor-absorbing ring is installed inside the cavity. The odor-absorbing ring is made of odor-absorbing activated carbon. The cavity facilitates the installation of the odor-absorbing ring, and the odor-absorbing activated carbon reduces the leakage of odors.
[0013] Beneficial effects: When extracting urine samples from inside the collection tube, the use of a threaded rod controls the descent of the sealing plate and rubber stopper, allowing the upper part of the collection tube to connect with the outside, maintaining air pressure balance, and making the rubber stopper offset from the liquid outlet hole, facilitating the discharge of urine from inside the collection tube through the sampling tube, which is convenient for operation. In addition, the odor overflowing from the upper part of the collection tube is filtered by the odor absorption ring, reducing the spread of odors in the operation area. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the overall structure of this utility model from another angle;
[0016] Figure 3 This is a schematic diagram of the structure of this utility model after partial cross-section and explosion;
[0017] Figure 4 This utility model Figure 3 A magnified structural diagram of location A in the middle;
[0018] Figure 5 This is a structural diagram showing the location of the sealing cap of this utility model;
[0019] Figure 6 This is a structural schematic diagram of the connecting rod position in this utility model.
[0020] In the diagram: 1. Collection tube; 2. Sampling tube; 3. Sealing cap; 4. Sealing cover; 5. Threaded rod; 6. Sealing plate; 7. Connecting rod; 8. Rubber stopper; 9. Odor-absorbing ring; 10. Connecting tube; 11. Groove; 12. Liquid outlet; 13. Elastic stopper; 14. Handle; 15. Scale line; 16. Threaded tube; 17. Through hole; 18. Cavity. Detailed Implementation
[0021] 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.
[0022] Please see Figure 1-6As shown, a urine sampling and collection device includes a collection cylinder 1, a sampling tube 2 fixedly installed at the lower end of the collection cylinder 1, a sealing cap 3 threadedly connected to the sampling tube 2, and a sealing cover 4 threadedly connected to the upper end of the collection cylinder 1. A threaded rod 5 is threadedly connected to the sealing cover 4, a sealing plate 6 is fixedly installed at the lower end of the threaded rod 5, a connecting rod 7 is fixedly installed at the lower end of the sealing plate 6, and a rubber stopper 8 is fixedly installed at the lower end of the connecting rod 7. The rubber stopper 8 is inserted into the inside of the sampling tube 2, and an odor-absorbing device is embedded inside the sealing cover 4. The upper end of the ring 9 and the sealing cap 4 is fixedly equipped with a connecting tube 10 in an array. One end of the connecting tube 10 is connected to the odor-absorbing ring 9. In use, the lower end of the sampling tube 2 is first sealed with the sealing cap 3, and the sealing cap 4 is unscrewed to open the upper end of the collection tube 1 for easy urine collection. After collection, the upper end of the collection tube 1 is sealed with the sealing cap 4. During sealing, the rubber stopper 8 is inserted into the interior of the sampling tube 2 to improve the sealing effect of the sampling tube 2. Then, it is sent for testing. When sampling and analyzing urine, unscrew the sealing cap 3 and place the collection cylinder 1 on the external shelf. Attach the upper end of the external test tube to the sampling tube 2, then screw on the threaded rod 5 to lower it. The threaded rod 5 lowers the sealing plate 6, connecting rod 7, and rubber stopper 8, allowing the rubber stopper 8 to extend to the bottom of the sampling tube 2, facilitating urine drainage. During urine drainage, the sealing plate 6 releases the seal on one end of the connecting tube 10, allowing the upper part of the collection cylinder 1 to drain. The end is connected to the outside through the connecting pipe 10 and the odor-absorbing ring 9, so that the air pressure at the upper end of the collection cylinder 1 is balanced, avoiding the generation of a negative pressure state. The gas overflowing from the upper end of the collection cylinder 1 is filtered by the odor-absorbing ring 9, preventing the odor of urine from spreading to the outside, improving the air cleanliness of the working area. After sampling, the threaded rod 5 is turned in the opposite direction, so that the sealing plate 6 and the rubber stopper 8 rise, making it easy to reseal the connecting pipe 10 and the sampling tube 2, improving the sealing effect during storage, and there is no need to tighten the sealing cap 3 again afterward.
[0023] As a technical optimization of this utility model, a groove 11 is provided at the lower end of the inner part of the sealing cap 4. One end of the connecting pipe 10 is connected to the groove 11, and the sealing sheet 6 is located inside the groove 11. When sealing the collection cylinder 1, the sealing sheet 6 is located inside the groove 11, so that the sealing sheet 6 seals one end of the connecting pipe 10. When the sealing sheet 6 descends, the sealing sheet 6 moves to the bottom of the groove 11, thereby connecting the upper part of the collection cylinder 1 with the connecting pipe 10 through the groove 11. This not only maintains the air pressure balance, but also facilitates the filtration of overflowing odors through the odor-absorbing ring 9. The sampling tube 2 is a double-layer tube, and the surface of the sampling tube 2 is treated with a hydrophobic coating to prevent urine from sticking to the sampling tube 2. The inner layer of the sampling tube 2 is provided with a liquid outlet hole 12, so that when sealing, the rubber stopper 8 is located at the liquid outlet hole 12. The position of the rubber stopper 8 allows it to seal the sampling tube 2. When the rubber stopper 8 descends, it is located below the outlet hole 12. Urine inside the collection tube 1 flows into the outer layer through the outlet hole 12 and is discharged into the outer test tube through the space between the inner and outer layers, facilitating sampling. The sealing cap 3 is threadedly connected to the outer layer of the sampling tube 2. An elastic plug 13 is fixedly installed inside the sealing cap 3. The elastic plug 13 is inserted into the inner layer of the sampling tube 2. The elastic plug 13 facilitates the sealing of the outlet hole 12 when collecting urine, preventing the collected urine from entering the space between the inner and outer layers of the sampling tube 2. After the sealing cap 4 is installed, when the rubber stopper 8 extends into the sampling tube 2, the elastic plug 13 is compressed, and the rubber stopper 8 seals the outlet hole 12, reducing the risk of urine dripping and contamination when the sealing cap 3 is unscrewed.
[0024] As a technical optimization of this utility model, a handle 14 is fixedly installed on one side of the outer surface of the collection cylinder 1. The collection cylinder 1 is made of transparent material, and scale lines 15 are printed on the other side of the outer surface of the collection cylinder 1. The handle 14 facilitates carrying the entire unit, and the scale lines 15 facilitate observation of the collected urine volume. A threaded tube 16 is fixedly installed at the middle position of the upper end of the sealing cap 4. A threaded rod 5 is threadedly connected to the threaded tube 16. When the threaded rod 5 is turned, it is easy for the threaded rod 5 to move up and down along the threaded tube 16. Through holes 1 are arranged in an array at the lower end of the sealing cap 4. 7. The through hole 17 is connected to the odor-absorbing ring 9, which facilitates the connection between the inside and outside of the collection cylinder 1. When not in use, the through hole 17 is sealed by the external release film to prevent the odor-absorbing ring 9 from absorbing external odors and improve the odor absorption effect during use. The sealing cover 4 has an annular cavity 18 inside, and the odor-absorbing ring 9 is installed inside the cavity 18. The odor-absorbing ring 9 is made of odor-absorbing activated carbon. The cavity 18 facilitates the installation of the odor-absorbing ring 9, and the odor-absorbing activated carbon facilitates the absorption of odors emitted by urine during sampling, reducing the overflow of odors.
[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A urine sampling and collection device, characterized in that: The system includes a collection cylinder (1), a sampling tube (2) fixedly installed at the lower end of the collection cylinder (1), a sealing cap (3) threadedly connected to the sampling tube (2), a sealing cover (4) threadedly connected to the upper end of the collection cylinder (1), a threaded rod (5) threadedly connected to the sealing cover (4), a sealing plate (6) fixedly installed at the lower end of the threaded rod (5), a connecting rod (7) fixedly installed at the lower end of the sealing plate (6), a rubber plug (8) fixedly installed at the lower end of the connecting rod (7), the rubber plug (8) inserted into the inside of the sampling tube (2), an odor-absorbing ring (9) embedded inside the sealing cover (4), and a connecting tube (10) fixedly installed in an array at the upper end of the sealing cover (4), one end of the connecting tube (10) being connected to the odor-absorbing ring (9).
2. The urine sampling and collection device as described in claim 1, characterized in that: The sealing cap (4) has a groove (11) at its lower interior end. One end of the connecting pipe (10) is connected to the groove (11), and the sealing sheet (6) is located inside the groove (11).
3. The urine sampling and collection device as described in claim 1, characterized in that: The sampling tube (2) is a double-layer tube, and the inner layer of the sampling tube (2) has an outlet hole (12).
4. The urine sampling and collection device as described in claim 3, characterized in that: The sealing cap (3) is threadedly connected to the outer layer of the sampling tube (2), and an elastic plug (13) is fixedly installed inside the sealing cap (3). The elastic plug (13) is inserted into the inner layer of the sampling tube (2).
5. The urine sampling and collection device as described in claim 1, characterized in that: A handle (14) is fixedly installed on one side of the outer side of the collection tube (1). The collection tube (1) is made of transparent material, and scale lines (15) are printed on the other side of the outer side of the collection tube (1).
6. The urine sampling and collection device as described in claim 1, characterized in that: A threaded tube (16) is fixedly installed at the middle position of the upper end of the sealing cover (4), and the threaded rod (5) is threadedly connected to the threaded tube (16).
7. The urine sampling and collection device as described in claim 1, characterized in that: The lower end of the sealing cap (4) is provided with through holes (17) arranged in an array, and the through holes (17) are connected to the odor-absorbing ring (9).
8. The urine sampling and collection device as described in claim 7, characterized in that: The sealing cap (4) has an annular cavity (18) inside, and the odor-absorbing ring (9) is installed inside the cavity (18), and the odor-absorbing ring (9) is made of odor-absorbing activated carbon.
