Sampling device

Abstract

The utility model relates to a sampling device. The sampling device comprises a test tube, a first tube cap, a sampling rod and a second tube cap, the first tube cap is in threaded connection with the opening of the test tube, and a through hole is formed in the top of the first tube cap; the sampling rod is accommodated in the test tube, the upper part of the sampling rod is inserted into the through hole, the top end of the sampling rod penetrates out of the top end of the first tube cap, and the top end of the sampling rod is used for breaking after a part of the sampling rod is pulled upwards; the second tube cap is in threaded connection with the top of the first tube cap, a raised head is arranged in the second tube cap, and the raised head can be inserted into the through hole after the second tube cap is screwed, so that the remaining part of the sampling rod after breaking is pushed into the test tube. The device can enable the swab head to be in a closed environment in a breaking process, so that the risk that viruses diffuse from an opening of a test tube is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of physical and chemical analysis, and in particular to a sampling device. Background Art

[0002] The swab is mainly composed of two parts, the swab stick and the swab head. The swab head is in direct contact with the subject. The stick is mainly made of polymer materials, thin in the front and thick in the back. In order to facilitate the breakage after sampling, a fine mark (break) is often cut near the sampling end of the swab. After sampling, it is broken and immersed in the test solution. The swab head is mostly made of polymer synthetic fibers such as polyester and polyamide through different processes.

[0003] In order to facilitate sampling and avoid the situation where the swab head breaks or bounces off, there are technical solutions for improving the structure of sampling swabs or sampling test tubes. For example, patent document CN213376691U provides a reagent bottle with a breakable sampling rod, which includes a bottle body and a plunger, the plunger is arranged inside the bottle body, and the plunger is provided with a through hole connected to the inner cavity of the bottle body; the sampling rod is inserted into the bottle body through the through hole of the plunger and broken, and in the process of breaking the sampling rod, the plunger can effectively prevent the liquid in the reagent bottle from splashing out of the bottle. For another example, patent document CN219792965U discloses an easy-to-break swab sampling tube, including a storage tube and a sampling rod, the storage tube includes a tube body and a tube cover, and the lower end of the sampling rod is provided with a sampling swab: the inner wall of the storage tube is provided with a breaking cross bar, and the breaking cross bar is made of hard material; when sampling, the sampling rod is placed between the breaking cross bar and the inner wall of the storage tube, which can help the sampling rod to complete the break and avoid contamination.

[0004] During the breaking process of the swab in the above-mentioned document, the top of the test tube or other container is not sealed and is in an open or semi-open state. It is difficult to completely prevent the virus from spreading from the opening of the test tube after sampling during the breaking process. Therefore, it is necessary to design a product that can keep the swab head in a closed environment during the breaking process. Utility Model Content

[0005] The purpose of this application is to provide a sampling device that can keep the swab head in a closed environment during the breaking process, reducing the risk of virus spreading from the opening of the test tube. To this end, this application provides the following technical solutions:

[0006] A sampling device comprises a test tube, a first tube cap, a sampling rod and a second tube cap; the first tube cap is threadedly connected to the opening of the test tube and has a through hole on its top; the sampling rod is accommodated in the test tube, the upper part of which is inserted into the through hole and the top end passes through the top end of the first tube cap, the top end of the sampling rod is used to pull out part of the sampling rod upwards and then break it; the second tube cap is threadedly connected to the top of the first tube cap and has a convex head inside, the second tube cap can insert the convex head into the through hole after being tightened, so as to push the remaining part of the sampling rod after breaking into the test tube.

[0007] In at least one embodiment, the inner wall of the first tube cap is threadedly connected to the outer side of the opening of the test tube, and the inner wall of the second tube cap is threadedly connected to the outer side wall of the first tube cap.

[0008] In at least one embodiment, the through hole is a circular hole, the protrusion is a cylinder with a pointed tip at the bottom, and the maximum outer diameter of the protrusion is equal to the aperture of the through hole.

[0009] In at least one embodiment, the sampling rod includes a rod body and an adsorbent wrapped around the lower end of the rod body, a ring-shaped breaking opening is provided at the lower portion of the rod body, and a limiting ring is provided on the side wall of the rod body below the breaking opening.

[0010] In at least one embodiment, an ejection-assisting block is provided at the upper end of the rod body, and the size of the ejection-assisting block is larger than the size of the through hole.

[0011] In at least one embodiment, the main body of the pull-out aid block is a cylinder, which is coaxially fixedly connected to the rod body and has grooves on both sides.

[0012] Compared with the prior art, the present invention achieves at least the following beneficial effects:

[0013] The present application integrates a sampling stick (sampling swab) on a tube cap, and splits the tube cap into a first tube cap and a second tube cap that can be threadably connected. The sampling stick can be broken after the first tube cap is covered, and the broken swab head can be pushed into the test tube after tightening the second tube cap. During the above operation process, the swab head (the front end of the sampling stick) is always in a closed environment, which can prevent the swab head from bouncing off and reduce the risk of virus spreading from the test tube opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] One or more embodiments of the present application will now be described, by way of example only, with reference to the accompanying drawings, in which:

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0016] Figure 2 for Figure 1 Sectional view along AA direction;

[0017] Figure 3 This is a cross-sectional view of the embodiment of the present application after use;

[0018] Figure 4 An exploded view of an embodiment of the present application;

[0019] Figure 5 This is a schematic structural diagram of a first pipe cap according to an embodiment of the present application;

[0020] Figure 6 This is a schematic diagram of the structure of the second pipe cap in an embodiment of the present application;

[0021] Figure 7 Schematic diagram of the structure of the sampling rod according to an embodiment of the present application.

[0022] The numbers in the figure are: 100, test tube; 200, first tube cap; 210, through hole; 300, sampling rod; 310, rod body; 311, breaking mouth; 320, adsorbent; 330, limiting ring; 340, pulling-aid block; 341, groove; 400, second tube cap; 410, convex head. DETAILED DESCRIPTION

[0023] The present application will be described in detail below with reference to the exemplary embodiments in the accompanying drawings. However, it should be understood that the present application can be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. These embodiments are provided here to make the application content of the present application more complete and to fully convey the concept of the present application to those skilled in the art.

[0024] In the description of the present application, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present 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 operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present application.

[0025] like Figures 1-2As shown in FIGS. 4 to 6 , in at least one sampling device of the present embodiment, it includes a test tube 100, a first tube cap 200, a sampling rod 300 and a second tube cap 400. The first tube cap 200 is threadedly connected to the opening of the test tube 100, and a through hole 210 is opened on the top thereof. The sampling rod 300 is accommodated in the test tube 100, and its upper part is inserted into the through hole 210 and the top end passes through the top end of the first tube cap 200. The top end of the sampling rod 300 is used to pull out part of the sampling rod 300 upwards and then break it. The second tube cap 400 is threadedly connected to the top of the first tube cap 200, and a convex head 410 is provided inside thereof. After the second tube cap 400 is tightened, the convex head 410 can be inserted into the through hole 210, so as to push the remaining part of the sampling rod 300 after breaking into the test tube 100.

[0026] The inner wall of the first tube cap 200 is threadedly connected to the outer side of the opening of the test tube 100, and the inner wall of the second tube cap 400 is threadedly connected to the outer wall of the first tube cap 200. The through hole 210 is a round hole, and the convex head 410 is a cylindrical shape with a pointed tip at the bottom, and the maximum outer diameter of the convex head 410 is equal to the aperture of the through hole 210.

[0027] The test tube 100 is generally made of transparent plastic, the first tube cap 200 and the second tube cap 400 can be made of conventional plastic, and the structure and material of the sampling rod 300 can refer to conventional sampling swabs.

[0028] Before swab sampling, the second tube cap 400 is in an untightened state. In this state, there is enough space between the first tube cap 200 and the second tube cap 400 to accommodate both the protrusion 410 and the top of the sampling stick 300. The staff removes the first tube cap 200 from the top opening of the test tube 100, and the sampling stick 300 can be used for sampling together with the first tube cap 200 and the second tube cap 400. After sampling, the sampling stick 300 is inserted into the test tube 100, the first tube cap 200 is screwed into the top of the test tube 100, and then the second tube cap 400 is screwed out. The upper part of the sampling stick 300 is pulled out and broken, and then the second tube cap 400 is screwed back in and tightened. Under the action of the protrusion 410, the lower end of the sampling stick 300 is pushed in and falls to the bottom of the test tube 100, and its state is as shown in FIG. Figure 3 shown.

[0029] Continue to refer Figure 7 In an optional embodiment, the sampling rod 300 includes a rod body 310 and an absorbent material 320 wrapped around the lower end of the rod body 310. The lower part of the rod body 310 is provided with a break opening 311 in the shape of an annular groove, and a limit ring 330 is provided on the side wall of the rod body 310 below the break opening 311. The absorbent material 320 is a small ball of material with absorption capacity, and its material can be polyester fiber, nylon and other artificial short fiber silk, as well as cotton fiber, polyurethane sponge, calcium alginate sponge, etc. The limit ring 330 is used to prevent the absorbent material 320 from touching the first tube cap 200.

[0030] Furthermore, an auxiliary pull-out block 340 is provided at the upper end of the rod body 310, and the size of the auxiliary pull-out block 340 is larger than the size of the through hole 210. The main body of the auxiliary pull-out block 340 is a cylinder, which is coaxially fixedly connected to the rod body 310, and has grooves 341 on both sides. The auxiliary pull-out block 340 has a limiting function to prevent the sampling rod 300 from falling before sampling, and can also increase the contact area to help pull it upward.

[0031] It should be understood that all the above embodiments are illustrative rather than restrictive, and various modifications or variations made by those skilled in the art to the specific embodiments described above under the concept of the present application should be within the protection scope of the present application.

Claims

1. A sampling device, characterized in that: The invention comprises a test tube (100), a first tube cap (200), a sampling rod (300) and a second tube cap (400); the first tube cap (200) is threadedly connected to the opening of the test tube (100), and a through hole (210) is opened on the top of the first tube cap (200); the sampling rod (300) is accommodated in the test tube (100), the upper part of the sampling rod (300) is inserted into the through hole (210) and the top end passes through the top end of the first tube cap (200), and the top end of the sampling rod (300) is used to pull out part of the sampling rod (300) upwards and then break it; the second tube cap (400) is threadedly connected to the top of the first tube cap (200), and a convex head (410) is arranged inside the second tube cap (400), and the convex head (410) can be inserted into the through hole (210) after the second tube cap (400) is tightened, so as to push the remaining part of the sampling rod (300) after breaking into the test tube (100).

2. The sampling device according to claim 1, characterized in that: The inner wall of the first tube cap (200) is threadedly connected to the outer side of the opening of the test tube (100), and the inner wall of the second tube cap (400) is threadedly connected to the outer side wall of the first tube cap (200).

3. The sampling device according to claim 1, characterized in that: The through hole (210) is a circular hole, the convex head (410) is a cylindrical shape with a pointed tip at the bottom, and the maximum outer diameter of the convex head (410) is equal to the aperture of the through hole (210).

4. The sampling device according to claim 1, characterized in that: The sampling rod (300) comprises a rod body (310) and an adsorbent (320) wrapped around the lower end of the rod body (310); a breaking opening (311) in the shape of an annular groove is provided at the lower portion of the rod body (310); and a limiting ring (330) is provided on the side wall of the rod body (310) below the breaking opening (311).

5. The sampling device according to claim 4, characterized in that: An auxiliary pull-out block (340) is provided at the upper end of the rod body (310), and the size of the auxiliary pull-out block (340) is larger than the size of the through hole (210).

6. The sampling device according to claim 5, characterized in that: The main body of the pull-out assisting block (340) is a cylinder, which is coaxially fixedly connected to the rod body (310) and has grooves (341) on both sides.

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