A storage tube for sampling swab

Abstract

The present invention relates to the technical field of sample preservation, and more specifically, to a storage tube for a sampling swab, comprising a tube body, wherein a first cavity for storing a sample release agent and a second cavity for placing a sampling swab are provided in the tube body, wherein the first cavity is connected to the second cavity, and the central axis of the second cavity deviates from the central axis of the tube body. When the present invention is used, the sampling swab is placed in the second cavity, and moves up and down and rotates to elute in the second cavity. The nucleic acid sample of the sampling swab is evenly distributed in the sample release agent, and the sample release agent in the first cavity can be sucked for detection; the present invention omits the process of oscillating elution to extract nucleic acid samples, and the swab is vertically placed in the second cavity deviated from the center of the tube body, providing an operating space for sampling operations, simplifying the nucleic acid detection operation process, and facilitating clinical trial operations.

Description

Technical Field

[0001] The present invention relates to the technical field of sample preservation, and more particularly to a preservation tube for a sampling swab. Background Art

[0002] In the field of in vitro diagnosis, especially genetic diagnosis, it is necessary to collect samples separated from the human body for testing. Sampling with a sampling swab is a simple, painless, and non-invasive method for collecting DNA specimens. This method is suitable for collecting DNA samples from people of any age. Swabs are usually used as tools for medical examinations to collect microorganisms, exfoliated cells, or secretions. The sampling swabs are stored in a storage tube for inspection. The current sampling swab storage tube includes a detachable tube body and a cover body. After the sampling swab collects the patient sample, it is sealed and stored in the tube body, and then sent to the laboratory for nucleic acid extraction and testing. However, this method currently has many shortcomings: (1) During the laboratory nucleic acid extraction process, the nucleic acid sample on the swab needs to be shaken and eluted, which is cumbersome and increases the risk of infection caused by sample transfer; (2) During the test process, since there is no structure to fix the sampling swab in the storage tube, the swab is easy to tilt in the storage tube, affecting the test sampling operation. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a storage tube for a sampling swab, which does not require oscillation and elution and can facilitate subsequent detection and sampling.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] Provided is a storage tube for a sampling swab, comprising a tube body, wherein a first cavity for storing a sample release agent and a second cavity for placing the sampling swab are provided in the tube body, the first cavity is connected to the second cavity, and the central axis of the second cavity deviates from the central axis of the tube body.

[0006] The storage tube for the sampling swab of the present invention is placed in the second cavity, moved up and down and rotated for elution in the second cavity, and the nucleic acid sample of the sampling swab is evenly distributed in the sample release agent, and the sample release agent in the first cavity can be sucked for detection. The present invention omits the process of extracting nucleic acid samples by oscillation elution, and the swab is vertically placed in the second cavity that is set away from the center of the tube body, providing an operating space for the sampling operation, simplifying the nucleic acid detection operation process, facilitating clinical trial operations, and reducing the infection risk of the detection process.

[0007] Furthermore, the central axis of the first cavity coincides with the central axis of the tube body, and the side of the second cavity is attached to the inner wall of the tube body. The first cavity is used to store the sample release agent, and its position is limited to facilitate the subsequent automated detection sampling; the position of the second cavity is limited so that the sampling swab is attached to the inner wall of the tube body, so that the sampling swab can stand stably in the second cavity, preventing the sampling swab from tilting and causing adverse effects on the detection sampling.

[0008] Furthermore, the top of the tube body is provided with a first connection part for connecting the tube cover, and the bottom of the tube body is provided with a fixing part. The first connection part is used to connect the tube cover with the tube body, and the sampling swab and the sample release agent are sealed and stored in the storage tube; the fixing part is used to match the tube body with a fixed platform or a fixed instrument, which is conducive to realizing the automation of the tube cover rotation operation.

[0009] Furthermore, the tops of the first cavity and the second cavity are connected with a second connection part, and the second connection part surrounds between the outer edges of the tops of the first cavity and the second cavity and the inner wall of the tube body. After the tube body is connected to the tube cover, a closed space is formed between the second connection part, the first cavity, the second cavity, the tube body and the tube cover, and the swab and the sample release agent are stored in the closed space, which can effectively ensure the stability of sample storage.

[0010] Furthermore, the inner wall of the second cavity is provided with a plurality of first convex parts, which can, on the one hand, elute the nucleic acid sample well when the sampling swab is moved up and down, rotated and rotated, and on the other hand, help the sampling swab to stand stably in the second cavity and not easily fall over.

[0011] Furthermore, the first convex portion is a first convex ridge, and the first convex ridge is one or a combination of vertical ridges, horizontal ridges, oblique ridges, and spiral ridges. The shape of the first convex ridge is not a limiting provision of the present invention, and other friction structures that can increase the friction between the sampling swab and the inner wall of the second cavity to improve the elution effect of the sampling swab can be applied to the present invention.

[0012] Furthermore, the first convex part is a first convex point. The first convex points can be connected to form one or a combination of vertical ridge structures, horizontal ridge structures, oblique ridge structures, and spiral ridge structures, and can also be processed to form an irregular ridge structure as needed, which not only has a better elution effect when the sampling swab is moved up and down or rotated, but also can save the amount of raw materials used in preparation.

[0013] Furthermore, a plurality of second convex parts are evenly distributed on the bottom of the inner side of the second cavity. The first convex part on the side plays an elution effect on the nucleic acid sample on the side of the sampling swab, and the second convex part on the bottom plays an elution effect on the nucleic acid sample on the bottom of the sampling swab, which can improve the elution effect of the sample on the sampling swab when the sampling swab moves up and down and rotates.

[0014] Furthermore, the second convex portion is a second convex ridge, one end of the second convex ridge is arranged at the bottom center of the second cavity, and the other end of the second convex ridge is connected to the first convex portion. The position and shape of the second convex ridge are set to simplify the mold structure, simplify the molding process, design aesthetics, and improve the elution effect, and are not intended to be a limiting provision of the present invention.

[0015] Furthermore, the second convex portion is a second convex point. The first convex points can be connected to form a radial ridge structure distributed radially along the bottom of the second cavity, which not only has a better elution effect when the sampling swab is rotated, but also can save the amount of raw materials used for preparation.

[0016] Furthermore, the first cavity is a conical hole, the second cavity is a cylindrical hole, and the depth of the second cavity is greater than the depth of the first cavity. The outer edges of one end of the first cavity and the second cavity are connected to the second connecting part, and the other end of the second cavity is arranged lower than the other end of the first cavity to increase the stability of the sampling swab when stored upright.

[0017] Further, the first cavity is a conical hole, the second cavity is a cylindrical hole, the first cavity and the second cavity partially overlap to form a first side edge and a second side edge, the distance between the first side edge and the second side edge is not greater than the minimum diameter of the sampling swab, and the sampling swab cannot pass through the gap between the first side edge and the second side edge. The setting of the gap between the first side edge and the second side edge is a preference made to obtain good processing performance and stabilization of the sampling swab, and is not a provision of the present invention.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The storage tube for the sampling swab of the present invention eliminates the process of oscillating and eluting to extract the nucleic acid sample. The swab is vertically placed in a second cavity that is offset from the center of the tube body, providing an operating space for the sampling operation, which can simplify the nucleic acid detection operation process, facilitate clinical trial operations, and reduce the infection risk during the detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a perspective view of a storage tube for a sampling swab in Example 1;

[0021] Figure 2 This is a schematic diagram of the structure of the storage tube for the sampling swab in Example 1;

[0022] Figure 3 It is a bottom view of the storage tube for the sampling swab in Example 1;

[0023] Figure 4 This is a schematic diagram of the structure of the storage tube for the sampling swab in Example 1 equipped with a tube cover;

[0024] Figure 5This is a schematic diagram of the structure of the storage tube for the sampling swab in Example 2;

[0025] Figure 6 A top view of the storage tube for the sampling swab in Example 2;

[0026] Figure 7 is a perspective view of a storage tube for a sampling swab in Example 4;

[0027] Figure 8 This is a schematic diagram of the structure of the storage tube for the sampling swab in Example 4;

[0028] Fig. 9 It is a top view of the storage tube for the sampling swab in Example 4;

[0029] Fig.10 It is a top view of the storage tube for the sampling swab in Example 7;

[0030] In the accompanying drawings: 1-tube body; 11-first cavity; 12-second cavity; 13-first connecting portion; 14-fixing portion; 15-second connecting portion; 16-first convex portion; 17-second convex portion; 2-tube cover. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with specific implementation methods. The accompanying drawings are only used for exemplary descriptions and are only schematic diagrams, not actual drawings, and cannot be understood as limiting this patent; in order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0032] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] Embodiment 1

[0034] like Figures 1 to 4The first embodiment of the storage tube for sampling swabs of the present invention is shown, comprising a tube body 1, wherein a first cavity 11 for storing a sample release agent and a second cavity 12 for placing a sampling swab are provided in the tube body 1, the first cavity 11 is connected to the second cavity 12, and the central axis of the second cavity 12 deviates from the central axis of the tube body 1. In this embodiment, the elution process of the sampling swab moving up and down and rotating in the second cavity 12 can be made into a mark attached to the outer wall of the tube body 1.

[0035] When this embodiment is implemented, the sampling swab is placed in the second cavity 12 after sampling, and moves up and down and rotates in the second cavity 12 for elution. The nucleic acid sample of the sampling swab is evenly distributed in the sample release agent, and the sample release agent in the first cavity 11 is absorbed for detection. In this way, the process of oscillating and eluting the nucleic acid sample is omitted. The swab is placed vertically in the second cavity 12 deviated from the center of the tube body 1, providing an operating space for the sampling operation, simplifying the nucleic acid detection operation process, facilitating clinical trial operations, and reducing the infection risk during the detection process.

[0036] In order to make the sampling swab stable in the second cavity 12, the present embodiment can set the size of the second cavity 12 so that the inner wall of the second cavity 12 gently squeezes the sampling swab head. Specifically, the size of the second cavity 12 is between the maximum diameter of the sampling swab head and the diameter of the sampling swab rod. However, it should be noted that the size setting of the second cavity 12 is a preferred setting for better stabilization of the sampling swab, and is not a restrictive provision of the present invention.

[0037] In this embodiment, the connection between the first cavity 11 and the second cavity 12 can be in a variety of connection forms: the first cavity 11 and the second cavity 12 are connected at the side, and when the side is connected, a sufficient amount of sample release agent should be added to the first cavity 11 and the second cavity 12, so that the liquid level of the sample release agent is higher than the lowest connection point between the first cavity 11 and the second cavity 12, so as to ensure that the sample release agent can flow freely between the first cavity 11 and the second cavity 12; the first cavity 11 and the second cavity 12 are connected at the bottom, and when the bottom is connected, the bottom of the first cavity 11 can be set below the bottom of the second cavity 12, so that the sample release agent containing the nucleic acid sample can flow smoothly into the first cavity 11 for subsequent detection and sampling. Of course, the connection between the first cavity 11 and the second cavity 12 of the present invention is not limited to the above two forms, and other connection forms that can ensure that the sample release agent flows in the first cavity 11 and the second cavity 12 and the sample release agent eluted with the nucleic acid sample flows to the first cavity 11 for storage are applicable to the present invention.

[0038] In order to further limit the storage position of the sampling swab in the storage tube and avoid the sampling operation being affected by the improper position of the sampling swab, the present embodiment further limits the distribution positions of the first cavity 11 and the second cavity 12 in the tube body 1. Specifically, the central axis of the first cavity 11 of the present embodiment coincides with the central axis of the tube body 1, and the side of the second cavity 12 is attached to the inner wall of the tube body 1, so that it is convenient for the sampling instrument to extend into the first cavity 11 to absorb the sample release agent, and the sampling swab is attached to the inner wall of the tube body 1 on one side in the second cavity 12, so that the sampling swab can be stored upright more stably.

[0039] During the transportation and transfer of the storage tube, the storage tube should be sealed. Therefore, in this embodiment, a first connecting portion 13 for connecting the tube cover 2 is provided at the top of the tube body 1; in order to be suitable for the automated operation of the instrument during the detection process, a fixing portion 14 is provided at the bottom of the tube body 1. The structure of the fixing portion 14 can be set according to the structure of the fixed instrument or the fixed table. In this embodiment, one end of the fixing portion 14 is flush with the bottom of the tube body 1, and the other end of the fixing portion 14 can extend upward to the top edge of the first cavity 11 and the second cavity 12; one side of the second cavity 12 is tangent to the fixing portion 14, and the other side is attached to the inner wall of the tube body 1. In this embodiment, the connecting portion is an external thread provided on the outer wall of the tube body 1. The tube body 1 and the tube cover 2 are connected by threads. The connection is stable and can facilitate automated operation. Figure 3 As shown, the fixing portion 14 is configured as a cross structure. When operating the tube cover 2, the cross structure cooperates with the fixing platform to prevent the tube body 1 from rotating with the tube cover 2 when the tube cover 2 is rotated. However, it should be noted that the cross structure is a preferred embodiment for achieving both better fixing effect and better processing and forming performance, and is not intended to be a limitation of the present invention. The structure of the fixing portion 14 of this embodiment can be designed and adapted according to the fixing platform or the fixing instrument.

[0040] In order to reasonably distribute the positions of the first cavity 11 and the second cavity 12 in the tube body 1, in this embodiment, a second connecting portion 15 is connected to the top of the first cavity 11 and the second cavity 12. The second connecting portion 15 can be truncated and surround the outer edges of the first cavity 11 and the second cavity 12 and the inner wall of the tube body 1. Figure 2 After the tube body 1 is connected to the tube cover 2, a closed space is formed between the second connecting portion 15, the first cavity 11, the second cavity 12, the tube body 1 and the tube cover 2, as shown in FIG. Figure 4As shown, the swab and the sample release agent are stored in the closed space, which can effectively ensure the stability of sample storage. In addition, the second connecting portion 15, the first cavity 11, and the second cavity 12 of this embodiment can be an integrated structure, the first cavity 11 and the second cavity 12 partially overlap, the cross-section of the first cavity 11 and the second cavity 12 is a gourd structure, the first cavity 11 and the second cavity 12 partially overlap, and the spacing between the first side edge and the second side edge formed by the connection of the first cavity 11 and the second cavity 12 can be set according to the molding requirements and the shape and size of the sampling swab.

[0041] In order to give the storage tube product better performance, the wall thickness of the tube body 1, the wall thickness of the first cavity 11, the wall thickness of the second cavity 12, the thickness of the fixing part 14, the thickness of the second connecting part 15, etc. of the storage tube in this embodiment are equal to ensure the cooling effect during the molding process. Of course, this is only a preference made to obtain a storage tube with better performance using existing production equipment, and is not a limiting provision of the present invention.

[0042] Embodiment 2

[0043] like Figure 5 to Figure 6 The second embodiment of the storage tube for the sampling swab of the present invention is shown. This embodiment is the same as the first embodiment, except that a plurality of first protrusions 16 are provided on the inner wall of the second cavity 12 of this embodiment. On the one hand, the nucleic acid sample can be well eluted when the sampling swab is moved up and down, rotated and rotated, and on the other hand, the sampling swab can be stably stood in the second cavity 12 and is not easy to tip over.

[0044] Specifically, the first convex portion 16 in this embodiment is a first convex ridge, and the first convex ridge is one or a combination of vertical ridges, horizontal ridges, oblique ridges, and spiral ridges. Of course, it should be noted that the shape of the first convex ridge listed above is not a limiting provision of the present invention, and other friction structures that can increase the friction between the sampling swab and the inner wall of the second cavity 12 to improve the elution effect of the sampling swab can be applied to the present invention.

[0045] The first convex edge of the present embodiment may preferably be a vertical edge, but the first convex edge is set as a vertical edge for the purpose of facilitating demoulding of the tube body 1, and is not intended to be a restrictive provision of the present invention.

[0046] In addition, the number of the first ridges in this embodiment can be set to 8-12, evenly surrounding the inner wall of the second cavity 12. However, it should be noted that the number of the first ridges is not a limiting provision of the present invention, and the number of the first ridges in this embodiment can be increased or decreased accordingly according to the thickness of the first ridges, the elution effect of the first ridges, and the structural parameters of the sampling swab.

[0047] Embodiment 3

[0048] This embodiment is the third embodiment of the storage tube for the sampling swab. This embodiment is the same as the second embodiment, except that a plurality of first protrusions are provided on the inner wall of the second cavity 12, rather than a continuous structure like the first ridge in the embodiment. Compared with the second embodiment, this embodiment can obtain a better elution effect and can save the amount of raw materials used in preparing the tube body 1.

[0049] The first convex points in this embodiment can be connected to form a vertical ridge structure, a horizontal ridge structure, an oblique ridge structure, a spiral ridge structure, or a combination thereof, and can also be processed to form an irregular ridge structure as required. In addition, the shape of the first convex point in this embodiment can be set to a friction structure such as a hemispherical shape, a cube, etc., which can increase the friction between the sampling swab and the second cavity 12 when it moves up and down or rotates.

[0050] In order to facilitate the processing of the first protrusion 16 and demoulding of the first protrusion 16 , the first protrusions of this embodiment can form a vertical ridge structure that evenly surrounds the inner wall of the second cavity 12 .

[0051] Embodiment 4

[0052] like Figures 7 to 9 The fourth embodiment of the storage tube for the sampling swab of the present invention is shown. This embodiment is the same as the second or third embodiment, except that when the sampling swab is used for sampling, the nucleic acid sample is not only adhered to the side of the sampling swab, but also adhered to the bottom of the sampling swab. In addition to the first convex portion 16 arranged around the side wall of the second cavity 12, this embodiment is also provided with a second convex portion 17 at the bottom of the inner side of the second cavity 12, so that the nucleic acid sample on the side of the sampling swab and the nucleic acid sample at the bottom of the sampling swab can be eluted. Specifically, the second convex portion 17 of this embodiment is a second convex ridge, one end of the second convex ridge is arranged at the bottom center of the second cavity 12, and the other end of the second convex ridge is connected to the first convex portion 16. When the first convex portion 16 is a first convex ridge and a vertical ridge, the number of the second convex ridges is equal to the number of the first convex ridges, and the first convex ridge and the second convex ridge can be connected to form an integrated ridge-shaped structure, and the mold structure design is simple, easy to form, beautiful in design, and has a good elution effect. However, it should be noted that the structure and number of the second ridges in this embodiment are optimized for the sake of aesthetic design and convenient processing, and are not intended to be restrictive provisions of the present invention. Other ridge structures and numbers of ridges that can achieve the elution effect may also be applicable to the present invention.

[0053] Embodiment 5

[0054] This embodiment is the same as the second embodiment or the third embodiment, except that, in addition to the first convex portion 16 being arranged around the side wall of the second cavity 12, a second convex portion 17 is also arranged at the inner bottom of the second cavity 12. The second convex portion 17 of this embodiment is a second convex point, rather than a continuous structure like the second convex ridge in the fourth embodiment. Compared with the fourth embodiment, this embodiment can obtain a better elution effect and can save the amount of raw materials used in preparing the tube body 1.

[0055] The second convex points in this embodiment can be connected to form a regular arrangement structure, or can be processed to form an irregular ridge structure as needed. In addition, the shape of the second convex points in this embodiment can be set to a hemispherical, cube, etc., which can increase the friction between the sampling swab and the second cavity 12 when it moves up and down or rotates.

[0056] Embodiment 6

[0057] This embodiment is the same as any one of the embodiments 1 to 5, except that the first cavity 11 of this embodiment is a conical hole, the second cavity 12 is a cylindrical hole, and the depth of the second cavity 12 is greater than the depth of the first cavity 11. Figure 4 The first cavity 11 is set as a conical hole, which is conducive to the collection of the sample release agent in the first cavity 11 and the increase of the liquid depth of the sample release agent, which is conducive to the subsequent detection sampling; the depth of the second cavity 12 is greater than the depth of the first cavity 11, and the bottom of the second cavity 12 is located below the bottom of the first cavity 11. The sampling swab can stand stably in the second cavity 12 to prevent the sampling swab from tipping over and affecting the detection sampling operation.

[0058] Embodiment 7

[0059] This embodiment is the same as any one of the embodiments 1 to 5, except that the first cavity 11 of this embodiment is a conical hole, the second cavity 12 is a cylindrical hole, the first cavity 11, the second cavity 12 and a diameter of the tube body 1 are collinear, the first cavity 11 and the second cavity 12 partially overlap to form a first side edge and a second side edge, and the distance between the first side edge and the second side edge is not greater than the minimum diameter of the sampling swab, such as Fig.10 As shown. During implementation, the connection between the first cavity 11 and the second cavity 12 is not affected, the sample release agent can flow freely between the first cavity 11 and the second cavity 12, and the sampling swab in the second cavity 12 can be effectively prevented from tilting toward the first cavity 11. It should be noted that the setting of the gap between the first side edge and the second side edge is a preference made to obtain good processing performance and stabilization of the sampling swab, and is not a provision of the present invention. The present invention can also connect the side plate between the first side edge and the second side edge, and design pores or slots on the side plate to achieve the connection between the first cavity 11 and the second cavity 12 while preventing the sampling swab from tilting.

[0060] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A storage tube for a sampling swab, comprising a tube body (1), characterized in that: The tube body (1) is provided with a first cavity (11) for storing a sample release agent and a second cavity (12) for placing a sampling swab, the first cavity (11) and the second cavity (12) are connected, the central axis of the second cavity (12) deviates from the central axis of the tube body (1), the central axis of the first cavity (11) coincides with the central axis of the tube body (1), the first cavity (11) and the second cavity (12) partially overlap to form a first side edge and a second side edge, and the distance between the first side edge and the second side edge is not greater than the minimum diameter of the sampling swab; The tops of the first cavity (11) and the second cavity (12) are connected with a second connecting portion (15), and the second connecting portion (15) surrounds between the outer edges of the tops of the first cavity (11) and the second cavity (12) and the inner wall of the tube body (1).

2. The storage tube for the sampling swab according to claim 1, characterized in that: The side of the second cavity (12) is attached to the inner wall of the tube body (1).

3. The storage tube for the sampling swab according to claim 1, characterized in that: The top of the tube body (1) is provided with a first connecting portion (13) for connecting with the tube cover (2), and the bottom of the tube body (1) is provided with a fixing portion (14).

4. The storage tube for the sampling swab according to claim 1, characterized in that: The inner wall of the second cavity (12) is provided with a plurality of first protrusions (16).

5. The storage tube for the sampling swab according to claim 4, characterized in that: The first convex portion (16) is a first convex ridge or a first convex point, and the first convex ridge is one of vertical ridges, horizontal ridges, oblique ridges, and spiral ridges, or a combination of several of them.

6. The storage tube for the sampling swab according to claim 4, characterized in that: A plurality of second convex portions (17) are evenly distributed on the inner bottom of the second cavity (12).

7. The storage tube for the sampling swab according to claim 6, characterized in that: The second convex portion (17) is a second convex ridge or a second convex point, one end of the second convex ridge is arranged at the bottom center of the second cavity (12), and the other end of the second convex ridge is connected to the first convex portion (16).

8. The storage tube for a sampling swab according to any one of claims 1 to 7, characterized in that: The first cavity (11) is a conical hole, the second cavity (12) is a cylindrical hole, and the depth of the second cavity (12) is greater than the depth of the first cavity (11).

9. The storage tube for a sampling swab according to any one of claims 1 to 7, characterized in that: The first cavity (11) is a conical hole, and the second cavity (12) is a cylindrical hole.

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