Sample sampling detection assembly

Abstract

The utility model belongs to the field of biological detection technology, specifically relates to a sample sampling detection subassembly, the sample sampling detection subassembly in the utility model includes casing, detection test paper and sampling piece, the casing includes the first cover body and the second cover body of mutual cover, and the first cover body is equipped with the observation window, the detection test paper sets up in the inside of casing, and the detection test paper is provided with reaction area, and reaction area is opposite the observation window, the sampling piece includes the extension and sampling part of being connected, and the extension sets up in the inside of casing and and detection test paper contact, and the sampling part projects casing, the sample sampling detection subassembly in the technical scheme of the utility model can realize sampling and detection integration, and the operation is simple, and the detection result is reliable.

Description

Technical Field

[0001] This utility model belongs to the field of biological detection technology, specifically relating to a sample sampling and detection component. Background Technology

[0002] Samples are crucial for testing technologies. Their convenience and ease of use allow even non-professionals to perform tests, increasing the accessibility of these technologies. In public health, such as HIV testing, they help reduce disease transmission and provide data support for prevention and control strategies. Water quality testing raises public awareness of environmental protection and ensures safe household water. Furthermore, home healthcare applications, such as blood glucose monitoring for diabetic patients, are also important applications of POCT (Point-of-Care Testing) technology. Overall, the application of sample testing technology has significantly improved the efficiency and effectiveness of personal health management, and has a profound impact on improving quality of life and public health safety.

[0003] Immunochromatography primarily utilizes the principle of immune binding reactions to detect the presence of analytes in samples. This detection is fundamentally based on the specific binding properties between immune molecules. Based on immunochromatography, various liquid detection devices have emerged on the market, the most common being the ordinary cartridge-type liquid detection device. The use of cartridge-type liquid detection devices often requires a device for collecting and transferring liquid (such as a sampling tube), and then the liquid sample is added to the sample well of a test card containing the test reagent to complete the detection. Sampling and detection are often completed in two or more steps, making the operation cumbersome. For viscous liquid samples (such as saliva), direct sample addition often results in significant errors. Furthermore, if additional processing of the liquid sample is required (such as adding sample diluent), other accessories are needed, further complicating the entire detection process.

[0004] Therefore, there is an urgent need to propose a sample sampling and detection component to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to at least solve the problem of complex sampling and detection processes. This purpose is achieved through the following technical solution:

[0006] The first aspect of this utility model provides a sample sampling and detection component, comprising:

[0007] The housing includes a first cover and a second cover that fit together, the first cover being provided with an observation window;

[0008] The test strip is disposed inside the housing and has a reaction area that faces the observation window.

[0009] A sampling component, comprising an extension and a sampling portion connected together, the extension being disposed inside the housing and in contact with the test strip, and the sampling portion extending out of the housing.

[0010] When operating the sample sampling and detection component in this technical solution, simply hold the housing and bring the sampling part of the sampling device into contact with the sample, wait for the sample to react in the reaction area of ​​the test strip, and observe the test results through the observation window. Compared with existing detection devices that use sampling tubes, the sample sampling and detection component in this technical solution integrates sampling and detection, making operation more convenient and easier. This reduces the error caused by different testing personnel, significantly increasing the reliability of the results. The rapid sampling process reduces the risk of inaccurate test results due to sample exposure, improving the success rate and accuracy of the test. During the sampling process, the operator can stay away from sample collection, reducing contact between the operator and the sample, thus effectively avoiding biosafety hazards and improving product safety and user experience. This device has extremely high versatility, whether it is colloidal gold test strips or other similar products. This sample sampling and testing kit is compatible with various types of test strips, including fluorescent test strips, dry chemical test strips, and enzyme chromatography test strips. It can detect a wide range of samples, from common liquids such as saliva, blood, and urine, to solid samples, even those difficult to collect or observe on solid surfaces. Because the kit is easy to use and requires no specialized knowledge, users can operate it accurately and obtain highly reliable results simply by following the instructions. Therefore, this kit is not only suitable for professional testing but also has significant value for home testing and other applications.

[0011] In addition, the sample sampling and detection component of this utility model may also have the following additional technical features:

[0012] In some embodiments of this utility model, a pressing part is provided on the inner side of the first cover, and a supporting part is provided on the inner side of the second cover. The pressing part and the supporting part are correspondingly provided, and the extension part is pressed between the pressing part and the supporting part.

[0013] In some embodiments of this utility model, the sampling member further includes a neck, the extension and the sampling part are connected through the neck, the neck is provided with a positioning notch, and the first cover and the second cover are respectively provided with a first positioning protrusion and a second positioning protrusion corresponding to the positioning notch.

[0014] In some embodiments of this utility model, the sampling element is absorbent cotton.

[0015] In some embodiments of this utility model, the inner side of the first cover is provided with a pressing part, which is used to press the test paper.

[0016] In some embodiments of this utility model, a plurality of limiting protrusions are provided on the inner side of the first cover, and at least one of the limiting protrusions is provided on each side of the observation window.

[0017] In some embodiments of this utility model, a limiting rib is provided on the inner side of the second cover, and the limiting rib forms a limiting groove around the end of the test paper away from the sampling element.

[0018] In some embodiments of this utility model, a support rail is provided on the inner side of the second cover, the support rail extends along the length direction of the test paper, and the support rail is used to support the test paper.

[0019] In some embodiments of this utility model, the test strip further includes a sample area, a coupling agent area, and an absorbent area, wherein the sample area, the coupling agent area, the reaction area, and the absorbent area are connected in sequence, and a quality control line and a detection line are provided on the reaction area.

[0020] In some embodiments of this utility model, a handhold is provided on the outer side of the first cover, and the handhold is provided with anti-slip texture. Attached Figure Description

[0021] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0022] Figure 1 A schematic diagram of the structure of a sampling component according to an embodiment of the present invention is shown.

[0023] Figure 2 A schematic diagram of the structure of the first cover according to an embodiment of the present invention is shown from a certain perspective;

[0024] Figure 3 A schematic diagram of the structure of the first cover according to an embodiment of the present invention is shown from another perspective;

[0025] Figure 4 A schematic diagram of the structure of the second cover according to an embodiment of the present invention is shown from a certain perspective;

[0026] Figure 5A schematic diagram of the structure of the second cover according to an embodiment of the present invention is shown from another perspective;

[0027] Figure 6 A schematic diagram of the structure of a test strip according to an embodiment of the present invention is shown.

[0028] The labels in the attached diagram are as follows:

[0029] 110. First cover; 111. Observation window; 112. Pressing part; 113. First positioning protrusion; 114. Handhold part; 115. Anti-slip texture; 116. Pressing part; 117. Limiting protrusion; 118. Cover pressing part; 120. Second cover; 121. Support part; 122. Second positioning protrusion; 123. Limiting rib; 124. Support rail;

[0030] 200. Test strip; 210. Reaction zone; 211. Control line; 212. Detection line; 220. Sample area; 230. Coupler area; 240. Absorbent area;

[0031] 300, Sampling component; 310, Sampling section; 320, Extension section; 321, Fixing hole; 330, Neck; 331, Positioning notch. Detailed Implementation

[0032] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0033] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0034] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0035] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations.

[0036] Figure 1 A schematic diagram of the structure of the sampling member 300 according to an embodiment of the present invention is shown. Figure 2 A schematic diagram of the structure of the first cover 110 according to an embodiment of the present invention is shown from a certain perspective. Figure 3 A schematic diagram of the structure of the first cover 110 according to an embodiment of the present invention is shown from another perspective. Figure 4 A schematic diagram of the structure of the second cover 120 according to an embodiment of the present invention is shown from a certain perspective. Figure 5 A schematic diagram of the structure of the second cover 120 according to an embodiment of the present invention is shown from another perspective. Figure 6 A schematic diagram of the structure of a test strip 200 according to an embodiment of the present invention is shown.

[0037] like Figures 1 to 6As shown, this utility model proposes a sample sampling and detection component, including a housing, a test strip 200, and a sampling element 300; the housing includes a first cover 110 and a second cover 120 that overlap each other, the first cover 110 having an observation window 111; the test strip 200 is disposed inside the housing, the test strip 200 having a reaction area 210 facing the observation window 111; the sampling element 300 includes an extension 320 and a sampling part 310 connected to each other, the extension 320 being disposed inside the housing and in contact with the test strip 200, and the sampling part 310 extending out of the housing.

[0038] When operating the sample sampling and detection component of this technical solution, simply hold the housing and bring the sampling part 310 of the sampling element 300 into contact with the sample, wait for the sample to react in the reaction area 210 of the test strip 200, and observe the test result through the observation window 111. Compared with existing detection devices that use sampling tubes, the sample sampling and detection component of this technical solution integrates sampling and detection, making operation more convenient and easier, thereby reducing the result error caused by different testing personnel and significantly increasing the reliability of the results; the sampling process is rapid, which can reduce the risk of inaccurate test results due to sample exposure and improve the success rate and accuracy of the test; during the sampling process, the operator can stay away from the sample collection, reducing the contact between the operator and the sample, thereby effectively avoiding biosafety hazards and improving product safety and user experience; this device has extremely high versatility, whether it is colloidal gold test strips or other similar products. This sample sampling and testing kit is compatible with various types of test strips, including fluorescent test strips, dry chemical test strips, and enzyme chromatography test strips. It can detect a wide range of samples, from common liquids such as saliva, blood, and urine, to solid samples, even those difficult to collect or observe on solid surfaces. Because the kit is easy to use and requires no specialized knowledge, users can operate it accurately and obtain highly reliable results simply by following the instructions. Therefore, this kit is not only suitable for professional testing but also has significant value for home testing and other applications.

[0039] Optionally, see Figure 1 In this embodiment, the sampling section 310 is generally waist-shaped and sheet-like, capable of absorbing a sufficient dose of sample. In other embodiments, the sampling section 310 can also be circular, cylindrical, or strip-shaped, depending on the specific application requirements. The volume of the sampling section 310 in the same batch of sample sampling and detection components is fixed, ensuring a consistent liquid load and preventing the results from being affected by differences in operation between different users. In this embodiment, the extension section 320 is elongated and strip-shaped, enabling rapid delivery of the sample to the test strip 200.

[0040] See Figure 2 and Figure 3 The structure of the housing is set according to the shape of the sampling component 300. The position of the housing for placing the extension 320 is a rectangular cavity, and the bottom has an opening. The rectangular cavity is connected to the outside through the opening.

[0041] Furthermore, a pressing part 112 is provided on the inner side of the first cover 110, and a supporting part 121 is provided on the inner side of the second cover 120. The pressing part 112 and the supporting part 121 are correspondingly provided, and the extension part 320 is pressed between the pressing part 112 and the supporting part 121.

[0042] The pressing part 112 and the supporting part 121 can tightly connect the extension 320 of the sampling member 300 to the housing, preventing the sampling member 300 from falling out of the housing and affecting the sampling or detection process. Optionally, the pressing part 112 can be multiple protrusions provided inside the first cover 110. Optionally, the shape of the protrusions can be straight, cylindrical, or cuboid, etc. The shape and position of the supporting part 121 are set according to the position of the pressing part 112 to ensure that the sampling member 300 can be clamped. In this embodiment, the pressing part 112 (supporting part 121) includes three strip-shaped protrusion structures arranged along the length direction of the housing. In other embodiments, the shape of the pressing part 112 (supporting part 121) can be set according to the usage requirements.

[0043] Furthermore, the sampling component 300 also includes a neck 330, the extension 320 and the sampling part 310 are connected through the neck 330, the neck 330 is provided with a positioning notch 331, and the first cover 110 and the second cover 120 are respectively provided with a first positioning protrusion 113 and a second positioning protrusion 122 corresponding to the positioning notch 331.

[0044] By providing a positioning notch 331 in the neck 330, it is ensured that the sampling element 300 is placed in the correct position, ensuring that the sample can be effectively delivered to the test strip 200. Exemplarily, in this embodiment, one positioning notch 331 is provided on each side of the neck 330, and correspondingly, two first positioning protrusions 113 and two second positioning protrusions 122 are provided respectively. In other embodiments, the number and position of the positioning notches 331 can be set according to usage requirements, and are not specifically limited here.

[0045] Optionally, a fixing hole 321 is provided on the extension 320 of the sampling member 300. Correspondingly, a positioning protrusion (not shown in the figure) can be provided on the second cover 120. When placing the sampling member 300, the fixing hole 321 is aligned with the positioning protrusion to ensure that the sampling member 300 is placed in the correct position.

[0046] Optionally, the sampling element 300 is absorbent cotton. Absorbent cotton is low-cost and allows for rapid sampling, effectively transferring the sample to the test strip 200. Different shapes of absorbent cotton can be used to achieve the testing objective depending on the specific testing requirements. For quantitative sample collection, a fixed volume of absorbent cotton can be used; if sample collection is difficult, the size, volume, and hardness of the absorbent cotton can be adjusted to collect and test the sample; for different samples, the absorbent cotton can be pretreated, such as by pretreating the sample according to the pH required by the test, ensuring a suitable acidic or alkaline environment during testing; the samples are not limited to liquids. For example, when testing solid samples such as dried blood, the absorbent cotton can be moistened before sampling, then placed on the solid surface to brush the sample, followed by dilution or other operations to complete the test. Alternatively, a rigid absorbent cotton can be used to directly scrape the required sample.

[0047] Absorbent materials can be diverse. They can be natural fibers such as pure cotton, degreased cotton, linen, bamboo fiber, and wood fiber, which have excellent moisture absorption and breathability. They can also be synthetic fibers, such as blends of polyester and viscose fibers, polyurethane foam, polyvinyl alcohol foam, and polypropylene fiber, which are manufactured using specific processes and combine absorbency and softness. Furthermore, they can be superabsorbent polymers, encompassing highly absorbent fibers, polymers, and resins, which have extremely strong water absorption capabilities. Inorganic absorbent materials, including activated carbon, silica gel, expanded graphite, and gelatin, can also be used, each with unique absorbency properties and stability. Biomass absorbent materials, such as lignocellulose, are renewable. In addition, there are other materials such as fiber absorbent cotton and sponges.

[0048] See Figure 2 Furthermore, the inner side of the first cover 110 is provided with a pressing part 116, which is used to press the test paper 200.

[0049] Optionally, the pressing part 116 can be a cylindrical protrusion or a strip-shaped protrusion, etc. When the first cover 110 and the second cover 120 are closed, the pressing part 116 can press the test paper 200 tightly onto the first cover 110 to prevent the test paper 200 from moving inside the housing.

[0050] Furthermore, the inner side of the first cover 110 is provided with a plurality of limiting protrusions 117, and at least one limiting protrusion 117 is provided on each side of the observation window 111. The limiting protrusions 117 can limit the reaction area 210 of the test strip 200 at the observation window 111, preventing the test strip 200 from shifting and making it difficult to observe the test results. Optionally, the observation window 111 is a rectangular window. In this embodiment, the number of limiting protrusions 117 is four, with two limiting protrusions 117 provided on each long side of the observation window 111, and the two limiting protrusions 117 are spaced apart. See also Figure 3 The observation window 111 has a marking T (corresponding to the test line 212 on the test strip 200) and a marking C (corresponding to the quality control line 211 on the test strip 200) on its side. The markings can be formed by integral injection molding, or by inkjet printing or laser engraving. Furthermore, the inner side of the first cover 110 has a plurality of cover pressing parts 118 for abutting against the second cover 120.

[0051] Further, see Figure 4 The inner side of the second cover 120 is provided with a limiting rib 123, which surrounds the end of the test paper 200 away from the sampling piece 300 to form a limiting groove.

[0052] When placing the test strip 200, one end of the test strip 200 is placed into the limiting groove. Therefore, through the limiting rib 123, the operator can know the placement position of the test strip 200, and the limiting rib 123 can limit the test strip 200 to prevent it from moving during use.

[0053] Further, see also Figure 4 The inner side of the second cover 120 is provided with a support rail 124, which extends along the length of the test paper 200 and is used to support the test paper 200. Understandably, the support rail 124 supports the test paper 200, preventing it from becoming unlevel during assembly and use. Optionally, the inner side of the second cover 120 is provided with two support rails 124, which extend along the length of the test paper 200 and are arranged parallel to each other, with the test paper 200 positioned on the two support rails 124.

[0054] Further, see Figure 6The test strip 200 also includes a sample area 220, a coupling agent area 230, and an absorbent area 240, which are sequentially connected. The reaction area 210 has a control line 211 and a test line 212. Optionally, the sample area 220 is an absorbent paper, a mixture of paper and cotton. The coupling agent area 230 can be made of glass fiber and polyester film. The reaction area 210 can be a nitrocellulose membrane. The absorbent area 240 is absorbent cotton. The control line 211 is an important indicator for determining the validity of the test. If the control line 211 does not develop color, it indicates that the test may have been performed improperly, the test strip may be faulty, or there may be a problem with the testing process. Regardless of the condition of the test line 212, the result is considered invalid and needs to be repeated. The color development of the test line 212 (T line) is related to whether a specific substance is detected. If the target substance is present in the sample, the T line will develop color under suitable reaction conditions. In use, the sample undergoes capillary chromatography, where an immune complex is coated in the conjugate region. As the sample passes through the conjugate region, the analyte in the sample reacts with the complex to generate an immune complex. This immune complex is then captured by antibodies coated on the nitrocellulose membrane, specifically control line 211 and detection line 212, thus forming a detection band. The test strip 200 can be a colloidal gold test strip, such as a dry chemical reagent test strip, an enzyme chromatography test strip, or a fluorescent test strip. The structure, principle, and usage of the test strip 200 are mature existing technologies in this field and will not be described in detail here.

[0055] Furthermore, a handle 114 is provided on the outer side of the first cover 110, and the handle 114 is provided with anti-slip texture 115. The anti-slip texture 115 can increase the friction between the fingers and the shell, reducing the risk of the shell falling from the hand. Optionally, the handle 114 is configured as a groove provided at the end of the shell away from the sampling member 300, which facilitates thumb pressing. The anti-slip texture 115 can be configured as ring-shaped or straight, etc., as long as it can increase the friction between the fingers and the shell.

[0056] Furthermore, the assembly process and usage method of the sampling and detection component in this technical solution are as follows:

[0057] First, prepare the test strip 200 required for the test item, cut it to a suitable size, and place it on the support rail 124 of the second cover 120. Insert the absorbent area 240 into the limiting groove. Along the direction from the limiting groove to the support rail 124, the absorbent area 240, the reaction area 210, the coupling agent area 230, and the sample area 220 are arranged in sequence. The reaction area 210 is provided with a quality control line 211 and a test line 212 for indicating the result. Then, laminate the cotton extension 320 of the sampling piece 300 onto the sample area 220. The unlaminated part of the extension 320 is placed on the support part 121 of the second cover 120. Place the neck 330 of the sampling piece 300 at the lower edge of the second cover 120, so that the positioning notch 331 is directly opposite the second positioning protrusion 122. Finally, the first cover 110 and the second cover 120 are pressed together, so that the pressing part 116 on the second cover 120 presses down on the test paper 200 to ensure the chromatography effect. The observation window 111 faces the reaction zone 210 for observing the results. The pressing part 112 on the second cover 120 presses down on the extension 320 of the sampling element 300 to prevent the sampling element 300 from falling off. In use, the sampling part 310 contacts the sample. After the sampling element 300 has absorbed enough sample and the control line 211 shows color, the sampling and detection assembly is laid flat. After a certain period of time, the results are observed to complete the detection.

[0058] The sampling and detection component provided in this technical solution has good versatility and can be used for saliva sample testing, blood testing, or urine testing. The following explanation uses saliva testing and blood testing as examples.

[0059] The advantages of using saliva as a test sample include its non-invasiveness, ease of operation, speed and convenience, privacy protection, low cost, reduced risk of cross-infection, suitability for large-scale screening, reduced psychological barriers, applicability to children and the elderly, and ease of storage and transportation. These characteristics make saliva testing a convenient, economical, and user-friendly screening method, especially suitable for situations requiring rapid and large-scale testing. When performing saliva sample testing, the absorbent cotton is made of a rigid material, and the test strip 200 uses a colloidal gold test strip. After scraping the sample from areas in the mouth, such as between the teeth or other hard-to-collect areas, the absorbent cotton is placed near the salivary glands under the tongue for about one minute to allow it to absorb sufficient liquid sample. The liquid is then transferred along the extension 320 to the colloidal gold test strip, initiating chromatography on the strip. The test is completed after a certain time.

[0060] Blood tests are a rapid, economical, and non-invasive diagnostic tool that provides a wide range of health information, aiding in early diagnosis, disease risk assessment, monitoring treatment effectiveness, and providing a basis for personalized medicine. It is an indispensable and important component of modern medicine. In this protocol, the test strip 200 uses colloidal gold test strips. The absorbent cotton is made of a soft material and maintains a constant volume to quantitatively absorb the required blood volume. If the sample is collected from a fingertip, the soft absorbent cotton can reduce discomfort for the subject. After collecting the blood sample, the absorbent cotton is placed in a container containing sample diluent. Alternatively, the sample can be allowed to stand naturally for chromatography to complete the test, or it can be diluted and mixed by squeezing the container with the absorbent cotton before allowing it to stand to complete the test.

[0061] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A sample sampling and detection component, characterized in that, include: The housing includes a first cover (110) and a second cover (120) that overlap each other, wherein the first cover (110) is provided with an observation window (111); A test strip (200) is disposed inside the housing, and the test strip (200) is provided with a reaction zone (210) which is directly opposite the observation window (111); The sampling component (300) includes an extension (320) and a sampling part (310) connected to each other. The extension (320) is disposed inside the housing and contacts the test paper (200), and the sampling part (310) extends out of the housing.

2. The sample sampling and detection component according to claim 1, characterized in that, The first cover (110) has a pressing part (112) on its inner side, and the second cover (120) has a supporting part (121) on its inner side. The pressing part (112) and the supporting part (121) are respectively provided, and the extension part (320) is pressed between the pressing part (112) and the supporting part (121).

3. The sample sampling and detection component according to claim 1, characterized in that, The sampling component (300) also includes a neck (330), the extension (320) and the sampling part (310) are connected through the neck (330), the neck (330) is provided with a positioning notch (331), and the first cover (110) and the second cover (120) are respectively provided with a first positioning protrusion (113) and a second positioning protrusion (122) corresponding to the positioning notch (331).

4. The sample sampling and detection component according to claim 1, characterized in that, The sampling component (300) is absorbent cotton.

5. The sample sampling and detection component according to claim 1, characterized in that, The inner side of the first cover (110) is provided with a pressing part (116), which is used to press the test paper (200).

6. The sample sampling and detection component according to claim 1, characterized in that, The inner side of the first cover (110) is provided with a plurality of limiting protrusions (117), and at least one of the limiting protrusions (117) is provided on each side of the observation window (111).

7. The sample sampling and detection component according to claim 1, characterized in that, The inner side of the second cover (120) is provided with a limiting rib (123), which forms a limiting groove around the end of the test paper (200) away from the sampling element (300).

8. The sample sampling and detection component according to claim 1, characterized in that, The inner side of the second cover (120) is provided with a support rail (124), which extends along the length direction of the test paper (200) and is used to support the test paper (200).

9. The sample sampling and detection component according to claim 1, characterized in that, The test strip (200) further includes a sample area (220), a coupling agent area (230), and an absorbent area (240). The sample area (220), the coupling agent area (230), the reaction area (210), and the absorbent area (240) are connected in sequence. A quality control line (211) and a detection line (212) are provided on the reaction area (210).

10. The sample sampling and detection component according to any one of claims 1-9, characterized in that, The outer side of the first cover (110) is provided with a handle (114), and the handle (114) is provided with anti-slip texture (115).

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