Sampling tube and method of using same

Abstract

The present application provides a sampling tube and a method for using the same. The sampling tube is used to process swabs and store preservation solutions. The sampling tube includes a preservation tube, a first end cap, and a second end cap. The preservation tube has a first accommodating chamber for accommodating the preservation solution, a first tube end connected to the first accommodating chamber, and a second tube end connected to the first accommodating chamber. The first end cap and the second end cap are detachably connected to the first tube end and the second tube end, respectively, to seal the first tube end and the second tube end. A second accommodating chamber with an insertion port is formed in the first end cap. The insertion port faces the first accommodating chamber, and the insertion port is smaller than the maximum cross-section of the swab head perpendicular to the axis of the swab rod. The sampling tube and the method for using the same provided by the present application can remove the swab while removing the first end cap when testing the preservation solution in the sampling tube, so as to facilitate the smooth progress of subsequent testing work.

Description

Technical Field

[0001] The present application relates to the technical field of sampling devices, and in particular to a sampling tube and a method for using the same. Background Art

[0002] In the field of virus detection, such as the etiological detection of respiratory pathogens, it is usually necessary to collect samples from the nasal cavity or oral cavity through swabs, and store the collected swabs in sampling tubes for storage and transportation of samples to facilitate subsequent testing.

[0003] In the prior art, the swab is usually soaked in a preservation solution, and the swab needs to be removed before testing, and then the preservation solution containing virus particles is sucked out on an automated instrument or manually for testing. The process of removing the swab is likely to cause a lot of inconvenience to the operator. Summary of the invention

[0004] In view of this, the embodiments of the present application hope to provide a sampling tube and a method of using the same to solve the problem of the inconvenience of removing the swab from the sampling tube in the prior art.

[0005] To achieve the above-mentioned purpose, one aspect of an embodiment of the present application provides a sampling tube for processing a swab and storing a preservation solution, the sampling tube comprising:

[0006] A storage tube having a first accommodating chamber for accommodating the storage solution, a first tube end communicating with the first accommodating chamber, and a second tube end communicating with the first accommodating chamber;

[0007] a first end cap, detachably connected to the first tube end to seal the first tube end, a second accommodating cavity with an insertion opening formed in the first end cap, the insertion opening facing the first accommodating cavity, the swab head of the swab being able to extend into the second accommodating cavity through the insertion opening, the insertion opening being smaller than a maximum cross-section of the swab head perpendicular to the swab rod axis of the swab; and

[0008] The second end cap is detachably connected to the second pipe end to seal the second pipe end.

[0009] Furthermore, a positioning groove is formed in the second end cover, and one end of the swab rod away from the swab head is placed in the positioning groove.

[0010] Furthermore, the opening size of the positioning groove decreases from close to the first accommodating cavity to away from the first accommodating cavity.

[0011] Furthermore, the first end cover includes a first cover body and a scraper body, the scraper body is connected to the first cover body, the insertion port and the second accommodating cavity are formed on the scraper body, and the scraper body is used to scrape the sample on the swab head into the preservation solution.

[0012] Furthermore, the scraper body includes a plurality of scraper strips, and the plurality of scraper strips are arranged at intervals in the first cover body to surround and form the insertion port and the second accommodating cavity.

[0013] Furthermore, the plurality of scraping strips are arranged along the radial direction of the cross section of the first cover body and are evenly distributed along the circumferential direction of the cross section of the first cover body.

[0014] Furthermore, the sampling tube further includes a sealing ring, and the sealing ring is arranged between the first tube end and the first end cover, and between the second tube end and the second end cover.

[0015] Furthermore, the sampling tube also includes a buckle, which is respectively arranged on the first end cover and the second end cover to prevent the sealing ring from falling off.

[0016] The sampling tube provided in the embodiment of the present application has a second accommodating cavity with an insertion port arranged in the first end cap. Since the insertion port is smaller than the maximum cross-section of the swab head in the direction perpendicular to the swab rod of the swab, the swab head can be deformed and inserted into the second accommodating cavity with the help of external force. The swab head is stuck in the second accommodating cavity. Therefore, when the preservation fluid needs to be tested, the swab can be taken out while removing the first end cap without the help of additional tools. The operation is simple and quick.

[0017] Another aspect of the present application provides a method for using a sampling tube, comprising:

[0018] Open the second end cap, with the second end of the preservation tube containing the preservation solution facing upward;

[0019] Inserting the swab head of the swab into the second receiving cavity of the first end cap from the second tube end;

[0020] Install the second end cap onto the second pipe end;

[0021] Turning over the sampling tube so that the first end cap faces upward;

[0022] The first end cap is opened, and the swab is separated from the storage tube together with the first end cap.

[0023] Furthermore, after the step of inserting the swab head of the swab from the second tube end into the second accommodating cavity of the first end cap, the method further comprises: rotating the swab so that the sample on the surface of the swab head is scraped into the preservation solution.

[0024] The method for using the sampling tube provided in the embodiment of the present application adopts the above-mentioned sampling tube. Therefore, when it is necessary to test the sample in the sampling tube, the swab can be taken out at the same time as the first end cap is taken out. There is no need to manually take out the swab separately, nor is there any need to use additional tools specifically for taking the swab. The operation is simple and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A cross-sectional view of a sampling tube provided in an embodiment of the present application after a swab is loaded;

[0026] Figure 2 for Figure 1 A cross-sectional view of the sampling tube after flipping;

[0027] Figure 3 A cross-sectional view of a sampling tube provided in an embodiment of the present application after removing the first end cap and the swab;

[0028] Figure 4 A cross-sectional view of a first end cap provided in one embodiment of the present application;

[0029] Figure 5 A front view of a swab provided in one embodiment of the present application;

[0030] Figure 6 A flowchart of a method for using a sampling tube provided in one embodiment of the present application; and

[0031] Figure 7 A flow chart of a method for using a sampling tube provided in another embodiment of the present application.

[0032] Description of reference numerals:

[0033] 1. Storage tube; 11. First accommodating cavity; 12. First tube end; 121. First external thread; 122. First convex body; 13. Second tube end; 131. Second external thread; 132. Second convex body; 2. First end cap; 21. First cover body; 211. First internal thread; 22. Scraping body; 221. Second accommodating cavity; 2211. Insertion port; 222. Scraping strip; 3. Second end cap; 31. Positioning groove; 32. Second internal thread; 4. Sealing ring; 5. Buckle;

[0034] 200, swab; 210, swab head; 220, swab rod; 221, inflection point; 300, preservation solution. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of the present application can be combined with each other, and the detailed description in the specific implementation method should be understood as an explanation of the purpose of the present application and should not be regarded as an improper limitation on the present application.

[0036] The terms indicating orientation such as "upper" and "lower" in the description of this application are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on this application.

[0037] The sampling tube in the related art is usually a simple spiral tube design. After the swab head 210 is placed in the sampling tube, the swab head 210 is immersed in the preservation solution 300. Before the test, the swab 200 needs to be removed first, and then the preservation solution 300 containing the virus particles is sucked on the automated instrument or manually for testing. If the swab 200 is not removed, most of the virus particles are adsorbed on the swab head 210, and it is difficult to mix them evenly into a suspension of virus particles. In addition, the presence of the swab 200 causes many inconveniences for sampling, especially it is not suitable for automated sampling and testing instruments.

[0038] In actual use, the operation of removing the swab 200 is inconvenient and may affect the test results. The main performance is: first, it is necessary to use tools such as tweezers to remove the swab 200. If the tweezers and other tools are reused, cross contamination of the sample may occur, and if disposable tweezers and other tools are used, the use cost is increased; second, when the swab 200 is removed, the liquid with a high content of virus particles is adsorbed on the swab head 210 and taken away, while the content of virus particles in the remaining preservation liquid 300 is relatively small, which is easy to cause missed detection and thus affect the test results; third, the operation of taking the swab 200 can only be done manually and is difficult to automate. If the virus sample contains respiratory infectious diseases that can be transmitted through air and contact, manual operation increases the risk of infection for the operator.

[0039] In view of this, if Figure 1 to Figure 4 As shown, one aspect of an embodiment of the present application provides a sampling tube for processing a swab 200 and storing a preservation solution 300. The sampling tube includes a preservation tube 1, a first end cap 2, and a second end cap 3. The preservation tube 1 has a first accommodating chamber 11 for accommodating a preservation solution 300, a first tube end 12 connected to the first accommodating chamber 11, and a second tube end 13 connected to the first accommodating chamber 11. The first end cap 2 is detachably connected to the first tube end 12 to seal the first tube end 12. A second accommodating chamber 221 having an insertion port 2211 is formed in the first end cap 2. The insertion port 2211 faces the first accommodating chamber 11. The swab head 210 of the swab 200 can penetrate into the second accommodating chamber 221 through the insertion port 2211. The insertion port 2211 is smaller than the maximum cross-section of the swab head 210 perpendicular to the axis direction of the swab rod 220 of the swab 200. The second end cap 3 is detachably connected to the second tube end 13 to seal the second tube end 13.

[0040] Specifically, in the process of using the bottle for sampling, the second tube end 13 of the sampling tube is firstly directed upward, and the preservation liquid 300 is at the bottom of the sampling tube, that is, the end close to the first tube end 12. The swab 200 enters the preservation tube 1 of the sampling tube through the second tube end 13. Although the insertion port 2211 is smaller than the maximum cross-section of the swab head 210 perpendicular to the swab rod 220 of the swab 200, since the swab head 210 includes cotton and other materials that can be deformed under the extrusion force, the swab head 210 will produce a certain deformation when passing through the insertion port 2211 under the action of manpower, so the swab head 210 can still pass through the insertion port 2211 and extend into the second accommodating cavity 221. After the swab head 210 completely enters the second accommodating cavity 221, the deformation will be restored. At this time, without the action of external force, no matter how the placement form of the sampling tube is changed, the swab head 210 cannot be separated from the second accommodating cavity 221. Therefore, when the preservation solution 300 needs to be tested, the sampling tube is turned over so that the first tube end 12 faces upward, and the preservation solution 300 is located at the bottom of the sampling tube, that is, close to the end of the second end cap 3. At this time, when the operator removes the first end cap 2, the swab 200 is separated from the sampling tube together with the first end cap 2.

[0041] The sampling tube provided in the present application is provided with a second accommodating cavity 221 with an insertion port 2211 in the first end cap 2. By utilizing the deformable characteristic of the swab head 210, after the swab head 210 is inserted into the second accommodating cavity 221 with the help of external force, the swab head 210 is stuck in the second accommodating cavity 221. Therefore, when it is necessary to test the preservation solution 300, the swab 200 can be taken out while removing the first end cap 2 without the aid of additional tools. Not only is the operation simple and quick, but the action of removing the first end cap 2 can be operated by a machine, thereby avoiding the risk of infection to the operator by viruses in the preservation solution 300 during the operation.

[0042] It should be noted that the connection between the first end cap 2 and the first pipe end 12, and the connection between the second end cap 3 and the second pipe end 13 can be threaded connection, such as Figure 1 to Figure 3 As shown, other connection methods such as snap-on connection may also be used. However, no matter which connection method is used, it should first be ensured that the preservation liquid 300 in the sampling tube will not leak out from the connection between the first end cap 2 and the first tube end 12 and the second end cap 3 and the second tube end 13.

[0043] In a preferred embodiment, see Figure 1 to Figure 3In the sampling tube provided in the present application, a first external thread 121 is formed on the first tube end 12, a first internal thread 211 is formed on the first end cap 2, and the first end cap 2 is connected to the first tube end 12 through the first external thread 121 and the first internal thread 211. Similarly, a second external thread 131 is formed on the second tube end 13, a second internal thread 32 is formed on the second end cap 3, and the second end cap 3 is connected to the second tube end 13 through the second internal thread 32 and the second external thread 131. In this way, the first end cap 2 and the second end cap 3 are both connected to the storage tube 1 through threads, which is convenient and efficient, and is conducive to the sealing of the sampling tube.

[0044] Further, in one embodiment, see Figure 1 to Figure 3 In the sampling tube provided in the present application, a first convex body 122 is formed on the first tube end 12, and a second convex body 132 is formed on the second tube end 13. The first convex body 122 is used to limit the first end cover 2, and the second convex body 132 is used to limit the second end cover 3, so as to ensure the effective matching length of the threaded connection between the first end cover 2 and the first tube end 12, and the second end cover 3 and the second tube end 13, so as to avoid leakage of the preservation solution 300 or even connection failure caused by over-screwing of the first end cover 2 or the second end cover 3, thereby improving the effectiveness of the connection between the first end cover 2 and the second end cover 3 and the preservation tube 1.

[0045] In one embodiment, see Figure 1 to Figure 3 In the sampling tube provided in the present application, a positioning groove 31 is formed in the second end cap 3, and the end of the swab rod 220 away from the swab head 210 is placed in the positioning groove 31, for example, the swab rod 220 is located in the middle of the sampling tube. It can be understood that by positioning the end of the swab rod 220 away from the swab head 210 through the positioning groove 31, the swab 200 can be prevented from shaking and excessively tilting during the transportation of the sampling tube, thereby effectively preventing the swab head 210 from passing through the insertion port 2211 and detaching from the second accommodating cavity 221 during the transportation of the sampling tube, causing the problem that the swab 200 cannot be taken out together when the first end cap 2 is taken out.

[0046] It should be noted that the positioning groove 31 can have various shapes. For example, the inner surface of the positioning groove 31 can be a curved surface or a flat surface. It is only necessary to ensure that the swab rod 220 is always in the middle position of the sampling tube after the second end cap 3 is connected to the second tube end 13.

[0047] In a preferred embodiment, in the sampling tube provided by the present application, the opening size of the positioning groove 31 decreases from close to the first accommodating cavity 11 to away from the first accommodating cavity 11. For example, the shape of the positioning groove 31 is conical or trumpet-shaped, such as Figure 1 to Figure 3As shown, the positioning groove 31 is in a conical shape. It is understandable that the notch of the conical or trumpet-shaped positioning groove 31 is relatively large, so when closing the second end cap 3, there is no need to consider the position of the swab rod 220. As the depth of the combination between the second end cap 3 and the second tube end 13 increases, the end of the swab rod 220 away from the swab head 210 will always slide into the positioning groove 31 along the inner wall of the positioning groove 31, and the operator does not need to pay special attention, that is, the second end cap 3 will not be stuck by the swab rod 220 during the installation process.

[0048] It is understandable that during the transportation of the sampling tube, samples such as viruses will sink to the bottom of the preservative liquid 300, that is, into the positioning groove 31. The trumpet-shaped or conical positioning groove 31 has a smaller bottom diameter. Therefore, when the preservative liquid 300 in the sampling tube is sucked for testing, as much preservative liquid 300 as possible can be collected at the bottom of the sampling tube to improve the accuracy of the test results.

[0049] In one embodiment, see Figure 1 to Figure 3 In the sampling tube provided in the present application, the first end cap 2 includes a first cover body 21 and a scraper body 22, the scraper body 22 is connected inside the first cover body 21, the insertion port 2211 and the second accommodating cavity 221 are formed on the scraper body 22, and the scraper body 22 is used to scrape the sample on the swab head 210 into the preservation solution 300. At this time, the first internal thread 211 is formed on the first cover body 21. It can be understood that after the swab head 210 enters the second accommodating cavity 221, some samples such as viruses may remain on its surface. The swab 200 is rotated to rotate the swab head 210 relative to the scraper body 22, so that the sample on the swab head 210 is scraped off by the scraper body 22 and enters the preservation solution 300, so that the virus content in the preservation solution 300 is higher, which is conducive to improving the accuracy of the test results.

[0050] It is understandable that the scraper body 22 may be in the shape of an elongated strip, and its cross section may be triangular, rectangular or trapezoidal, etc. In addition, the scraper strip 222 may also be in the shape of a thin plate or a bar, as long as it can scrape the sample off the swab head 210 .

[0051] In a preferred embodiment, see Figure 4 In the sampling tube provided in the present application, the scraper body 22 includes a plurality of scraper strips 222, which are arranged at intervals in the first cover body 21 to surround the insertion port 2211 and the second accommodating cavity 221. Specifically, the surface of the scraper strip 222 can be a plane or a curved surface such as a spiral surface, and the plurality of plane scraper strips 222 or spiral scraper strips 222 are arranged at intervals, so that in the process of rotating the swab 200, the plurality of scraper strips 222 scrape the swab head 210 at the same time, so that the efficiency of scraping the sample is higher.

[0052] In a preferred embodiment, in the sampling tube provided by the present application, the shape of the second accommodating cavity 221 is adapted to the shape of the swab head 210, such as Figures 1 to 3 As shown, the cross-sectional shape of the second accommodating cavity 221 is an ellipse which is the same as the cross-sectional shape of the swab head 210 . This is not only conducive to keeping the swab head 210 in a relatively fixed state in the second accommodating cavity 221 , but also helps the scraper strip 222 to scrape more samples on the swab head 210 during the scraping process of the swab head 210 .

[0053] In a preferred embodiment, see Figure 4 In the sampling tube provided by the present application, a plurality of scraping strips 222 are arranged along the radial direction of the cross section of the first cover body 21 and are evenly distributed along the circumference of the cross section of the first cover body 21. By arranging the scraping strips 222 along the radial direction of the cross section of the first cover body 21, it can be ensured that the scraping strips 222 have a better scraping effect on the sample on the swab head 210 during the rotation of the swab 200. Arranging the scraping strips 222 to be evenly distributed along the circumference of the cross section of the first cover body 21 is conducive to ensuring that the center of gravity of the first cover body 21 is located on the axis of the sampling tube, which is conducive to ensuring that the sampling tube is in a balanced state.

[0054] In one embodiment, see Figure 1 to Figure 3 In the sampling tube provided by the user, the sampling tube further includes a sealing ring 4, which is arranged between the first tube end 12 and the first end cap 2, and between the second tube end 13 and the second end cap 3. By arranging the sealing ring 4, the sealing performance of the connection between the first end cap 2 and the first tube end 12 and the second end cap 3 and the second tube end 13 can be better ensured, thereby effectively reducing the risk of leakage of the preservation liquid 300 in the sampling tube. In addition, the sealing ring 4 is arranged at the connection between the first end cap 2 and the second end cap 3 and the preservation tube 1, which is conducive to improving the friction of each connection, thereby improving the reliability of the connection between the first end cap 2 and the second end cap 3 and the preservation tube 1.

[0055] Further, in one embodiment, see Figure 1 to Figure 3 The sampling tube provided in the present application further comprises a buckle 5, which is respectively arranged on the first end cap 2 and the second end cap 3 to prevent the sealing ring 4 from falling off. Specifically, the buckle 5 may be in the shape of a ring, and its cross section may be a triangle, such as Figure 1 to Figure 3 As shown, it can also be other shapes such as round or rectangular. The buckle 5 can be a structure integrally formed with the first end cover 2 and the second end cover 3, or a structure that is snap-fitted into the first end cover 2 and the second end cover 3 after being formed. Its main function is to provide a certain limit for the sealing ring 4 to prevent the sealing ring 4 from falling off from the first end cover 2 or the second end cover 3.

[0056] The second aspect of the present application provides a method for using a sampling tube. Figure 6,include:

[0057] S10, opening the second end cap 3, and the second tube end 13 of the preservation tube 1 containing the preservation solution 300 is facing upward;

[0058] S20, inserting the swab head 210 of the swab 200 into the second accommodating cavity 221 of the first end cover 2 from the second tube end 13;

[0059] S30, installing the second end cover 3 onto the second pipe end 13;

[0060] S40, turning over the sampling tube so that the first end cap 2 faces upward;

[0061] S50, opening the first end cover 2, and the swab 200 is separated from the storage tube together with the first end cover 2.

[0062] Specifically, when the second tube end 13 of the preservation tube 1 is facing upward, the preservation liquid 300 is located at the bottom of the sampling tube, and part of the preservation liquid 300 enters the second accommodating chamber 221. After the swab head 210 of the swab 200 is placed into the sampling tube from the second tube end 13, it enters the second accommodating chamber 221 through the insertion port 2211. In the process of passing through the insertion port 2211, since the maximum cross-section of the swab 200 is larger than the size of the insertion port 2211, it will produce a certain deformation. After the swab head 210 enters the second accommodating chamber 221, it will restore the deformation. At this time, no matter what position the sampling tube is in, the swab head 210 will not be separated from the second accommodating chamber 221. Therefore, after installing the second end cover 3, flipping the sampling tube, and opening the first end cover 2, the swab 200 will be separated from the sampling tube together with the first end cover 2, so that the swab 200 can be easily removed, such as Figure 3 shown.

[0063] The method for using the sampling tube provided in the present application is to set a second accommodating cavity 221 in the first end cover 2 of the sampling tube, and make the insertion port 2211 of the second accommodating cavity 221 smaller than the maximum cross-section of the swab head 210 perpendicular to the swab rod 220, so that after the swab head 210 is inserted into the second accommodating cavity 221, it will not fall out easily, and then when the first end cover 2 is opened, the swab 200 can be separated from the sampling tube together with the first end cover 2, which is simple and convenient to operate, and avoids the adverse effects on the operator caused by manual removal of the swab.

[0064] It is understood that for a swab 200 with a longer swab rod 220, Figure 5As shown, the swab rod 220 is usually provided with a folding point 221. At this time, after the step S20 of inserting the swab head 210 of the swab 200 from the second tube end 13 into the second accommodating cavity 221 of the first end cap 2, the swab rod 220 needs to be broken at the folding point 221, and only the swab rod 220 with one end of the swab head 210 is retained in the preservation tube 1, and the other part of the swab rod 220 is discarded to facilitate the installation of the second end cap 3.

[0065] It should be noted that, during the process of flipping the sampling tube, the sampling tube can be shaken at the same time, so that the preservation liquid 300 is in full contact with the sample on the swab head 210 , and the virus in the sample can be evenly distributed in the preservation liquid 300 .

[0066] Further, in one embodiment, see Figure 7 In the method of use provided in the present application, after the step S20 of inserting the swab head 210 of the swab 200 from the second tube end 13 into the second receiving cavity 221 of the first end cap 2, the method of use further includes:

[0067] S60 , rotating the swab 200 so that the sample on the surface of the swab head 210 is scraped into the preservation solution 300 .

[0068] It is understandable that, in the process of extending the swab head 210 into the second accommodating chamber 221, although part of the sample on the swab head 210 is mixed in the preservation solution 300, a large amount of sample still remains on the swab head 210. At this time, by rotating the swab 200, the virus that may remain on the swab head 210 is scraped into the preservation solution 300 by the scraper 22, etc., so that the virus that may remain on the swab head 210 is further mixed into the preservation solution 300, so as to increase the virus content in the preservation solution 300 and further improve the accuracy of the test result.

[0069] In one embodiment, in the method for using the sampling tube provided in the present application, before the step S10 of opening the second end cap 3 and facing the second tube end 13 of the storage tube 1 containing the storage liquid 300 upward, the method for using the sampling tube further includes:

[0070] The swab rod 220 is held in the hand, and the swab head 210 is used to dip into samples such as the pharynx, nose or saliva.

[0071] Specifically, the sample to be tested is obtained through the swab head 210 , and the swab head 210 with the sample is placed in a sampling tube for storage.

[0072] The various embodiments / implementations provided in this application can be combined with each other without causing any contradiction.

[0073] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A sampling tube for processing swabs and storing preservation fluid, characterized in that: The sampling tube comprises: A storage tube having a first accommodating chamber for accommodating the storage solution, a first tube end communicating with the first accommodating chamber, and a second tube end communicating with the first accommodating chamber; a first end cap, detachably connected to the first tube end to seal the first tube end, a second accommodating cavity with an insertion opening formed in the first end cap, the insertion opening facing the first accommodating cavity, the swab head of the swab being able to extend into the second accommodating cavity through the insertion opening, the insertion opening being smaller than a maximum cross-section of the swab head perpendicular to the swab rod axis of the swab; and The second end cap is detachably connected to the second pipe end to seal the second pipe end.

2. The sampling tube according to claim 1, characterized in that: A positioning groove is formed in the second end cover, and one end of the swab rod away from the swab head is placed in the positioning groove.

3. The sampling tube according to claim 2, characterized in that: The opening size of the positioning groove decreases from close to the first accommodating cavity to away from the first accommodating cavity.

4. The sampling tube according to any one of claims 1 to 3, characterized in that: The first end cover comprises a first cover body and a scraper body, wherein the scraper body is connected inside the first cover body, the insertion port and the second accommodating cavity are formed on the scraper body, and the scraper body is used to scrape the sample on the swab head into the preservation solution.

5. The sampling tube according to claim 4, characterized in that: The scraper body includes a plurality of scraper strips, and the plurality of scraper strips are arranged in the first cover body at intervals to surround the insertion port and the second accommodating cavity.

6. The sampling tube according to claim 5, characterized in that: The plurality of scraping strips are arranged along the radial direction of the cross section of the first cover body and are evenly distributed along the circumferential direction of the cross section of the first cover body.

7. The sampling tube according to any one of claims 1 to 3, characterized in that: The sampling tube further includes a sealing ring, which is arranged between the first tube end and the first end cover, and between the second tube end and the second end cover.

8. The sampling tube according to claim 7, characterized in that: The sampling tube further comprises a buckle, which is respectively arranged on the first end cover and the second end cover to prevent the sealing ring from falling off.

9. A method for using a sampling tube, characterized in that: Applicable to the sampling tube according to any one of claims 1 to 8, the method of use comprising: Open the second end cap, and place the second end of the preservation tube containing the preservation solution upward; Inserting the swab head of the swab into the second receiving cavity of the first end cap from the second tube end; Install the second end cap onto the second pipe end; Turning over the sampling tube so that the first end cap faces upward; The first end cap is opened, and the swab is separated from the storage tube together with the first end cap.

10. The method of use according to claim 9, characterized in that: After the step of inserting the swab head of the swab into the second receiving cavity of the first end cap from the second tube end, the method further comprises: The swab is rotated to scrape the sample on the surface of the swab head into the preservation solution.

Images