Urine specimen centrifugal device

Abstract

The utility model relates to the field of analytical instruments, and discloses a urine specimen centrifugal device which comprises a centrifugal tube containing a urine specimen, the centrifugal tube comprises a tube body with the upper diameter identical to the lower diameter, and a separation plug is connected in the tube body in the length direction. The separating plug divides the pipe body into a first cavity and a second cavity and seals the first cavity and the second cavity. The centrifugal tube is divided into the first chamber and the second chamber through the separation plug, during use, a patient puts urine into the first chamber, and even if the patient fills the first chamber, an analyst can move the separation plug towards the second chamber, so that the accommodating volume of the first chamber is enlarged, the liquid level in the first chamber is reduced, and the urine in the first chamber is separated from the urine in the second chamber. The urine is prevented from splashing when an analyst opens the cover.

Description

Technical Field

[0001] The utility model relates to the field of analytical instruments, in particular to a urine specimen centrifugal device. Background Art

[0002] In clinical practice, urine test is an important indicator to measure the health of the human body. Before the urine test, the analyst will generally give the patient a sampling tube for sampling. The patient puts the urine into the sampling tube, and the analyst then takes the urine into the centrifuge tube through the sampling tube for corresponding inspection and analysis. In this process, a large amount of additional medical waste is generated. In practice, the analyst has also considered directly handing the centrifuge tube to the patient, allowing the patient to directly put the urine into the centrifuge tube, thereby reducing the generation of medical waste. For example, the Chinese patent, publication number CN216879440U discloses a new type of labeled centrifuge tube, which is provided with an anti-alcohol label on the wall of the centrifuge tube to avoid alcohol causing the label to be blurred, thereby avoiding the mixing of centrifuge tubes and being unable to distinguish. However, in clinical practice, despite attempts to simplify the process and directly let patients collect urine samples into centrifuge tubes, there are still challenges. Many patients tend to fill the sampling tube, resulting in urine volume exceeding its maximum designed capacity. When analysts try to drain excess urine, the centrifuge tube is easily deformed due to stress changes during the process of opening the lid and pouring, causing urine to splash out, which not only causes laboratory environmental pollution and biosafety risks, but also seriously affects the centrifugation effect and the accuracy of the final biochemical analysis data. Utility Model Content

[0003] The utility model is intended to provide a urine specimen centrifugal device to avoid the need for analysts to open the cover and pour out excess urine when the patient fills the centrifuge tube, thereby avoiding laboratory contamination and biosafety risks caused by urine splashing.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a urine specimen centrifuge device, comprising a centrifuge tube for containing urine specimens, the centrifuge tube comprising a tube body with an upper diameter and a lower diameter being the same, a separation plug being connected in the length direction of the tube body, the separation plug dividing the tube body into a first chamber and a second chamber and sealing the first chamber and the second chamber.

[0005] The beneficial effect of this solution is as follows: a separation plug is provided in the centrifuge tube, and the separation plug divides the centrifuge tube into a first chamber and a second chamber. When in use, the patient puts urine into the first chamber. Even if the patient fills the first chamber, the analyst can move the separation plug toward the second chamber, thereby expanding the holding volume of the first chamber, lowering the liquid level in the first chamber, and preventing urine from splashing out when the analyst opens the lid.

[0006] Furthermore, the separation plug includes a first connecting portion, which is bonded to the tube body, and the bonding force is 10-30 times of the standard gravity.

[0007] Beneficial effect: During centrifugation, according to the centrifugal force calculation formula G = r × 11.18 × 10 -6 ×rpm 2 , where r is the effective centrifugal radius, rpm is the speed of the centrifuge per minute, when the speed is 1000 rpm and the effective centrifugal radius is 3 cm, the centrifugal force is = 3 × 11.18 × 10 -6 ×1000 2 =33.4(×g), g is the acceleration due to gravity, generally 9.8m / s 2 That is, as long as the speed of the centrifuge exceeds 1000 revolutions per minute and the centrifugal radius is greater than 3 cm, the centrifugal force can overcome the adhesive force and slide the separation plug on the tube body. When the urine volume in the centrifuge tube exceeds the maximum scale line, the analyst does not need to open the lid to pour out the urine. He only needs to place the centrifuge tube on the centrifuge and slide the separation plug toward the second chamber with the help of the centrifuge to lower the liquid level of the urine in the first chamber, thereby avoiding the problem of urine splashing caused by opening the lid.

[0008] Furthermore, the centrifuge tube also includes a first tube bottom, which is integrally formed with the tube body, and the separation plug includes a second tube bottom, which is integrally formed with the first connecting portion, and the inner wall of the first tube bottom is adapted to the inner wall of the second tube bottom.

[0009] Beneficial effects: 1. The adaptive inner wall design can make the first tube bottom and the second tube bottom of the separation plug form a tight fit when docking, preventing the sample from leaking due to centrifugal force during the centrifugation process, thereby ensuring the integrity of the sample during the processing; 2. During the centrifugation process, the first tube bottom is like a built-in support structure, ensuring that the separation plug will not completely fall out of the tube body due to excessive centrifugal force, effectively avoiding sample leakage caused by the separation plug falling out, thereby ensuring the smooth progress of the centrifugal operation and the effective separation of the sample.

[0010] Furthermore, the centrifuge tube is made of polytetrafluoroethylene, and the centrifuge tube also includes a cover body that seals the tube body, a second connecting part is provided between the cover body and the tube body, and the cover body, the tube body and the second connecting part are integrally formed.

[0011] Beneficial effects: 1. The one-piece cover is tightly combined with the tube body through the second connecting part to ensure that the cover will not fall off or be lost easily. The user can use the cover and the second connecting part as a grip to load the sample into the centrifuge tube, thereby effectively protecting the sample in the centrifuge tube from contamination. At the same time, it simplifies the experimental operation process and avoids delays in the experimental progress due to finding or replacing the cover. 2. The polytetrafluoroethylene material has excellent chemical inertness and corrosion resistance. Whether it is facing strong acids, strong alkalis or organic solvents, it can maintain good tolerance to avoid damage to the centrifuge tube due to chemical reactions. At the same time, it can maintain its structural stability in high or low temperature environments, ensuring that the centrifuge tube can still function normally under extreme experimental conditions and will not affect the accuracy of the test results due to material degradation.

[0012] Furthermore, a first flange is provided at one end of the tube body away from the first tube bottom, a second flange is provided on the cover body, and the second connecting portion is integrally formed with the first flange and the second flange.

[0013] Beneficial effect: The contact area between the cover body and the tube body is increased by the first flange and the second flange. When the cover body is closed, a larger sealing contact interface can be provided, thereby improving air tightness and liquid tightness, effectively preventing leakage of samples or entry of external contaminants, and ensuring the accuracy of sample processing and the reliability of experimental results.

[0014] 3. During the centrifugation process, the first flange and / or the second flange can be stuck in the slot or edge of the centrifuge to prevent the centrifuge tube from being inserted too deeply into the centrifuge, so that after the centrifugation is completed, it is easier for the operator to remove the centrifuge tube from the centrifuge, reducing unnecessary operating difficulty and possible risk of injury.

[0015] Furthermore, a handle is provided on the second flange.

[0016] Beneficial effects: 1. The added handle makes it easier and more convenient to open the cover, especially when the cover and the tube are well sealed. The handle can be used to easily pry and uncover the cover, avoiding problems such as slipping and laboriousness caused by twisting the cover directly with hands, greatly improving the operating efficiency of analysts; 2. The design of the handle also reduces the chance of direct contact between the analyst's fingers and the cover and tube, thereby reducing the possibility of sample contamination and ensuring the accuracy of the experimental results; 3. For analysts who frequently perform centrifugation operations, the presence of the handle can reduce hand fatigue caused by long-term operation, improve experimental comfort, and also embodies a humanized design concept.

[0017] Furthermore, the first tube bottom is provided with a through hole.

[0018] Beneficial effect: During the centrifugation process, if the separation plug has a through-hole design, the centrifugal resistance can be reduced, making it easier for the separation plug to slide down along the tube wall to a predetermined position under the action of centrifugal force, which helps the separation plug to slide better following the centrifugal force and can reduce the required centrifugal force to a certain extent.

[0019] Furthermore, the separation plug includes a first connecting portion, and the outer diameter of the first connecting portion is larger than the inner wall of the tube body.

[0020] Beneficial effects: The interference fit formed between the connecting part of the separation plug and the tube body enables the separation plug to fit tightly with the tube wall through its own deformation after being inserted into the tube body, thereby achieving effective sealing of the first chamber and the second chamber, and preventing liquid or gas between the two chambers from penetrating each other; since the outer diameter of the connecting part is larger than the inner wall of the tube body, when the separation plug is inserted into the tube body, it can wrap up the glue or other residues on the tube wall, preventing these impurities from entering the sample during the centrifugation process, thereby avoiding interference with subsequent sample analysis results.

[0021] Furthermore, the separation plug is made of latex or rubber.

[0022] Beneficial effects: Both latex and rubber have good elasticity and flexibility, can fit tightly against the tube wall, and form an effective seal, ensuring that the sample will not leak into the second chamber during the centrifugation process. At the same time, latex and rubber materials have excellent chemical stability and are not easy to react chemically with samples or reagents. Therefore, they will not interfere with the chemical properties of the sample during the analysis process, thus ensuring the accuracy of the analysis results. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional diagram and internal structure schematic diagram of the utility model embodiment 1;

[0024] Figure 2 It is a three-dimensional diagram and internal structure schematic diagram of Example 2 of the utility model;

[0025] Figure 3 It is a cross-sectional view of Embodiment 3 of the present utility model;

[0026] Figure 4 It is a three-dimensional diagram and internal structure schematic diagram of Example 4 of the utility model. DETAILED DESCRIPTION

[0027] The following is further described in detail through specific implementation methods:

[0028] The figure marks in the drawings of the specification include: tube body 1, tube body 11, first flange 111, first tube bottom 12, cover body 2, cover body 21, second flange 211, handle 212, protrusion 22, second connecting part 23, separation plug 3, first connecting part 31, bonding part 311, second tube bottom 32.

[0029] Example 1

[0030] Reference Figure 1 , including a centrifuge tube and a separation plug 3. The centrifuge tube is integrally formed of polyvinyl chloride, including a tube body 1, a cover body 2 and a second connecting portion 23. The tube body 1 includes a tube body 11 and a first tube bottom 12. The upper diameter of the tube body 11 is the same as the lower diameter. A first flange 111 is arranged on the upper part of the tube body 11. The first flange 111 and the second connecting portion 23 are integrally formed. The cover body 2 includes a cover body 21. A protrusion 22 is arranged on the outer edge of the cover body 21. The protrusion 22 is adapted to the inner diameter of the tube body 11, so as to cover the tube body 1 in a sealed manner. A second flange 211 is fixed to the outer side of the protrusion 22. The second flange 211 is adapted to the first flange 111.

[0031] A separation plug 3 is provided at the lower part of the tube body 11. The separation plug 3 is a circular spacer. The circumference of the circular spacer is temporarily bonded to the inner wall of the tube body 11, thereby dividing the tube body 11 into a first chamber and a second chamber from top to bottom. During centrifugation, the bonding force is smaller than the centrifugal force, the separation plug 3 is separated from the tube body 11, and the first chamber is connected to the second chamber, thereby part of the sample in the first chamber is introduced into the second chamber, so that the liquid level in the first chamber is lowered.

[0032] During use, the patient puts urine into the centrifuge tube and closes the cover 2. When the analyst finds that there is too much urine in the centrifuge tube, he can first use a centrifuge to centrifuge the separation plug 3 until it is separated from the tube body 11, so that the first chamber is connected to the second chamber, thereby lowering the liquid level of the urine in the first chamber, and then open the cover 2 and put it into the instrument for testing to avoid urine splashing out and contaminating the analysis room when the cover 2 is opened.

[0033] When the urine volume is normal, the cover 2 can be directly opened and placed in the instrument for testing.

[0034] Example 2

[0035] like Figure 2 As shown, Example 2 is basically the same as Example 1, with the difference that the separation plug 3 includes an integrally formed first connecting portion 31 and a second tube bottom 32, the first connecting portion 31 is an inverted cone structure, the outer diameter of the lower end is adapted to the inner diameter of the tube body 11, and the outer diameter of the upper end is slightly larger than the inner diameter of the tube body 11. When the separation plug 3 is inserted into the centrifuge tube, the upper end of the first connecting portion 31 is slightly deformed and stuck in the tube body 11, dividing the centrifuge tube into a first chamber and a second chamber. The separation plug 3 is made of an elastic material, preferably latex or rubber, so that the first chamber and the second chamber are sealed by deformation.

[0036] Example 3

[0037] like Figure 3As shown, Example 3 is basically the same as Example 1, except that a bonding portion 311 is provided at the lower end of the first connecting portion 31, and the bonding portion 311 is bonded to the tube body 11, and the bonding force is 10-30 times the standard gravity. This prevents the separation plug 3 from falling out before the patient puts urine into the centrifuge tube, resulting in insufficient samples and affecting the normal detection process.

[0038] Example 4

[0039] like Figure 4 As shown, on the basis of Example 2, the second flange 211 is further provided with a handle 212, and the first tube bottom 12 is provided with a through hole. When the cover body 2 and the tube body 1 are closed, the analyst can open the cover body 2 through the handle 212, thereby reducing the probability of direct contact between the analyst's fingers and the cover body 2 and the tube body 1, thereby reducing the possibility of sample contamination and ensuring the accuracy of the experimental results. At the same time, the through hole provided in the first tube bottom 12 allows the gas in the second chamber to be discharged from the through hole during centrifugation, thereby reducing the resistance of the separation plug 3 when sliding, making it easier for the separation plug 3 to slide down along the tube wall to a predetermined position under the action of centrifugal force, which helps the separation plug 3 to slide better following the centrifugal force and reduces the required centrifugal force to a certain extent.

[0040] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that the technical means for solving the problems in the above-mentioned embodiments of the utility model can be used in combination to solve multiple technical problems at the same time. For those skilled in the art, several deformations and improvements can be made without departing from the technical solution of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A urine specimen centrifuge, characterized in that: The invention comprises a centrifuge tube for containing urine specimens, wherein the centrifuge tube comprises a tube body with the same upper diameter and lower diameter, a separation plug is connected in the length direction of the tube body, and the separation plug divides the tube body into a first chamber and a second chamber and seals the first chamber and the second chamber.

2. A urine specimen centrifuge device according to claim 1, characterized in that: The separation plug comprises a first connection part, which is bonded to the pipe body, and the bonding force is 10-30 times of the standard gravity.

3. A urine specimen centrifuge according to claim 2, characterized in that: The centrifuge tube also includes a first tube bottom, which is integrally formed with the tube body; the separation plug includes a second tube bottom, which is integrally formed with the first connecting portion; and the inner wall of the first tube bottom is adapted to the inner wall of the second tube bottom.

4. A urine specimen centrifuge according to claim 3, characterized in that: The centrifuge tube is made of polytetrafluoroethylene and further comprises a cover body that seals the tube body. A second connecting portion is arranged between the cover body and the tube body. The cover body, the tube body and the second connecting portion are integrally formed.

5. A urine specimen centrifuge according to claim 4, characterized in that: A first flange is arranged at one end of the tube body away from the first tube bottom, a second flange is arranged on the cover body, and the second connecting portion is integrally formed with the first flange and the second flange.

6. A urine specimen centrifuge device according to claim 5, characterized in that: The second flange is also provided with a handle.

7. A urine specimen centrifuge device according to claim 6, characterized in that: The first tube bottom is provided with a through hole.

8. The urine specimen centrifuge device according to claim 1, characterized in that: The separation plug comprises a first connecting portion, the outer diameter of which is larger than the inner wall of the tube body.

9. A urine specimen centrifuge device according to claim 8, characterized in that: The material of the separation plug is latex or rubber.

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