Quantitative sampling detection device

Abstract

The utility model discloses a quantitative sampling detection device which is characterized in that an accommodating cavity is limited in a main cavity, can rebound after being pressed, and comprises a first accommodating cavity opening and a second accommodating cavity opening which are oppositely arranged; the collection head is detachably connected with the main cavity, the collection head comprises a capillary tube cavity arranged in a penetrating mode, one end of the capillary tube cavity is a collection opening, the other end of the capillary tube cavity is a necking transition opening, and the transition opening is in one-way connection with the first containing cavity opening; the sealing cover is detachably connected with the second accommodating cavity opening; when the accommodating cavity is pressed, the sealing cover can be ventilated unidirectionally; and the test paper is placed in the main cavity close to the first accommodating cavity opening. The quantitative sampling detection device disclosed by the utility model can be used for accurately controlling the sample size; the sample collection quantity required by different types of liquid samples can be met by replacing corresponding capillary cavity spaces; the quantitative sampling detection device disclosed by the utility model is convenient to operate, simple in process and not easy to make mistakes.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and more specifically, to a quantitative sampling and detection device. Background Art

[0002] When collecting and testing liquid samples (such as blood, saliva, urine, etc.) from the human body, the following problems often occur:

[0003] 1. The sample size is difficult to control. Collecting too much or too little may affect the test results, especially when ordinary users conduct self-tests without medical staff present.

[0004] 2. Since different types of liquid samples require different sample volumes, it is difficult for users to accurately collect the required sample volume based on different sample types.

[0005] 3. The entire process from data collection to testing is complicated and difficult for ordinary users to master. Improper operation may lead to inaccurate test results. Utility Model Content

[0006] The utility model provides a quantitative sampling detection device to solve the problems in the prior art of difficulty in controlling the amount of sample collected, accurately collecting the amount of samples required for different types of samples, and the cumbersome steps of the entire process that are prone to errors affecting the detection results.

[0007] The utility model provides a quantitative sampling detection device, comprising: a main cavity, wherein a accommodating cavity is defined in the main cavity, the accommodating cavity can rebound after being pressed, and the accommodating cavity comprises a first accommodating cavity opening and a second accommodating cavity opening which are arranged opposite to each other; a collection head, wherein the collection head is detachably connected to the main cavity, the collection head comprises a capillary cavity which is arranged through, one end of the capillary cavity is a collection opening, and the other end of the capillary cavity is a shrinking transition opening, and the transition opening is unidirectionally connected to the first accommodating cavity opening; a sealing cover, wherein the sealing cover is detachably connected to the second accommodating cavity opening; when the accommodating cavity is pressed, the sealing cover can be unidirectionally breathable; and a test paper, wherein the test paper is placed in the main cavity near the first accommodating cavity opening.

[0008] Furthermore, the opening of the first accommodating cavity is formed into an expanded shape that is larger on the outside and smaller on the inside.

[0009] Furthermore, the inner wall of the main cavity is provided with a card slot extending from the first accommodating cavity opening to the second accommodating cavity opening, and the card slot fixes the test paper.

[0010] Furthermore, one side opposite to the card slot is formed as a transparent observation window.

[0011] Furthermore, a first clamping portion is provided at one end of the collection head close to the main cavity, and a second clamping portion is provided at an opposite position of the main cavity, and the first clamping portion and the second clamping portion are clamped to each other.

[0012] Furthermore, a compression spring is provided between the collecting head and the main cavity.

[0013] Furthermore, the first accommodating cavity is provided with a diaphragm.

[0014] Furthermore, a one-way air-permeable valve is provided in the sealing cover, and the sealing cover and the first accommodating cavity opening are in plug-in interference fit.

[0015] Furthermore, the accommodating cavity is formed as a gathering cavity at the first accommodating cavity opening.

[0016] Furthermore, a drainage channel is provided between the gathering cavity and the second accommodating cavity opening.

[0017] The quantitative sampling and detection device of the present invention has a one-way connection between the capillary cavity and the main cavity, and the liquid sample can enter the capillary cavity through the collection port. The collection head and the main cavity are detachably matched. When facing different types of liquid samples, the collection head corresponding to the appropriate capillary cavity is selected according to the sample collection volume. The sealing cover is one-way breathable. When the main cavity is pressed, the liquid sample enters the main cavity from the collection head. As the liquid sample reacts with the test paper in the main cavity, the test result is presented. The quantitative sampling and detection device of the present invention has a one-way connection between the capillary cavity and the main cavity. The liquid sample collected through the capillary cavity can accurately control the sample volume; the collection head and the main cavity are detachably connected. The corresponding collection head is selected according to different types of liquid samples. The sample collection volume required for different types of liquid samples is met through the corresponding capillary cavity space; by pressing the main cavity, the liquid sample enters the main cavity from the collection head, and the liquid sample reacts with the test paper and presents the test result. The process is simple and not prone to errors.

[0018] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0020] Figure 1 is a cross-sectional view of an embodiment of a quantitative sampling and detection device according to an embodiment of the present utility model;

[0021] Figure 2This is an exploded view of an embodiment of a quantitative sampling and detection device according to an embodiment of the present utility model;

[0022] Figure 3 This is a three-dimensional diagram of the main cavity of the quantitative sampling and detection device according to an embodiment of the present utility model;

[0023] Figure 4 This is another three-dimensional diagram of the main cavity of the quantitative sampling detection device according to an embodiment of the present utility model;

[0024] Figure 5 This is a front view of the main cavity of the quantitative sampling detection device according to an embodiment of the present utility model;

[0025] Figure 6 This is a three-dimensional diagram of a collection head of a quantitative sampling detection device according to an embodiment of the present utility model;

[0026] Figure 7 This is a front view of a collecting head of a quantitative sampling and detection device according to an embodiment of the present utility model;

[0027] Figure 8 This is a perspective view of an embodiment of a quantitative sampling and detection device according to an embodiment of the present utility model;

[0028] Figure 9 It is a three-dimensional diagram of another embodiment of the quantitative sampling and detection device according to the embodiment of the present utility model.

[0029] Reference numerals:

[0030] Main cavity 10; first accommodating cavity opening 11; second accommodating cavity opening 12; card slot 13; observation window 14; second clamping portion 15; gathering cavity 16; drainage channel 17;

[0031] Collection head 20; capillary cavity 21; collection port 22; transition port 23; first clamping portion 24;

[0032] Sealing cover 30; test paper 40; compression spring 50; diaphragm 60. DETAILED DESCRIPTION

[0033] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0034] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0035] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0036] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0037] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0038] In the specification and claims of this utility model, references to features using the terms "first" or "second" may explicitly or implicitly include one or more of these features. In the description of this utility model, unless otherwise specified, "plurality" means two or more. Furthermore, in the specification and claims, "and / or" refers to at least one of the connected items, and the character " / " generally indicates an "or" relationship between the connected items.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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 invention 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 cannot be understood as a limitation on the present invention.

[0040] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, removable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal connections between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0041] The quantitative sampling and detection device according to the embodiment of the present utility model is described in detail below with reference to the accompanying drawings.

[0042] The quantitative sampling and detection device according to the embodiment of the present invention includes a main cavity 10 , a collection head 20 , a sealing cover 30 and a test paper 40 .

[0043] Specifically, a accommodating cavity is defined in the main cavity 10, which can rebound after being pressed, and the accommodating cavity includes a first accommodating cavity opening 11 and a second accommodating cavity opening 12 arranged opposite to each other; the collection head 20 is detachably connected to the main cavity 10, and the collection head 20 includes a capillary cavity 21 arranged therethrough, one end of the capillary cavity 21 is a collection opening 22, and the other end of the capillary cavity 21 is a contracted transition opening 23, and the transition opening 23 is unidirectionally connected to the first accommodating cavity opening 11; the sealing cover 30 is detachably connected to the second accommodating cavity opening 12; when the accommodating cavity is pressed, the sealing cover 30 is unidirectionally breathable; the test paper 40 is placed in the main cavity 10 near the first accommodating cavity opening 11.

[0044] In other words, the quantitative sampling and detection device according to the embodiment of the present invention is mainly composed of a main cavity 10, a collection head 20, a sealing cover 30 and a test paper 40. A accommodating cavity is defined in the main cavity 10, and the accommodating cavity can rebound after being pressed. The accommodating cavity is made of medical-grade plastic, such as PP, PET, PVC, etc., which is usually a tough material with good resilience. The shape of the main cavity can be a rectangular parallelepiped, a cylinder, etc. The accommodating cavity includes a first accommodating cavity opening 11 and a second accommodating cavity opening 12, and the positions of the first accommodating cavity opening 11 and the second accommodating cavity opening 12 are relatively arranged.

[0045] The lower part of the main cavity 10 is connected with the collection head 20, and the collection head 20 and the main cavity 10 are detachably connected, such as threaded connection, buckle connection, magnetic attraction connection and the like, so as to facilitate mutual assembly and disassembly between the two. The collection head 20 comprises a capillary cavity 21 for collecting the collected liquid sample. The capillary cavity 21 is arranged vertically in the collection head 20. The lower end of the capillary cavity 21 is formed into a collection port 22, and the upper end of the capillary cavity 21 is formed into a transition port 23 in the shape of a neck. The transition port 23 is connected with the first containing cavity port 11. The diameter of the opening of the transition port 23 is smaller than the normal diameter of the capillary cavity 21. Due to the effect of liquid surface tension, the liquid in the capillary cavity 21 will not flow out of the transition port 23 into the main cavity 10 without external force. Unless a certain external force is applied, the liquid will flow into the main cavity 10 through the transition port 23 under the action of the external force. Due to the necked structure of the transition port 23, the liquid will not flow back into the capillary cavity 21 after entering the main cavity 10, and the transition port 23 forms a one-way connection structure with the first containing cavity port 11. The capillary cavity 21 collects the measured liquid by utilizing the capillary phenomenon. When the collection port 22 contacts the measured liquid, the measured liquid can rise along the inner wall of the capillary cavity 21 to fill the capillary cavity 21 under the difference between the cohesion and the adhesion force, overcoming the gravity. Since the space of the capillary cavity 21 is fixed, the purpose of quantitative sample collection can be achieved when sampling, and the detection result will not be affected by excessive or insufficient sample amount.

[0046] The second containing cavity port 12 of the main cavity 10 is connected with the sealing cover 30, and the test paper 40 is placed in the main cavity 10 close to the first containing cavity port 11. The sealing cover 30 and the second containing cavity port 12 are detachably connected, so as to facilitate quick opening of the sealing cover 30 and taking and replacing of the test paper 40. The sealing cover 30 can be one-way air permeable. When the containing cavity is pressed, the air in the containing cavity is discharged through the one-way air permeable structure of the sealing cover 30. When the pressing is released, the containing cavity begins to rebound to restore the original shape, and the liquid sample in the capillary cavity 21 flows out from the transition port 23 and flows into the containing cavity through the first containing cavity port 11 under the action of the pressure difference. At this time, the test paper 40 placed in the main cavity 10 close to the first containing cavity port 11 contacts the liquid sample to generate a response and feeds back the final test result on the test paper 40.

[0047] At the same time, the user can also open the sealing cover 30 according to the test needs, inject the buffer solution into the containing cavity through the second containing cavity port 12, the buffer solution can maintain the pH value of the test environment, maintain the stability of the PH value, and provide certain guarantee for the test result.

[0048] The working process of the quantitative sampling detection device is as follows:

[0049] First, the preparation phase begins. A variety of collection heads 20 are provided depending on the capacity of the capillary cavity 21. Figure 8 and Figure 9 As shown, Figure 8 This is a three-dimensional diagram of an embodiment of a quantitative sampling and detection device according to an embodiment of the present utility model. Figure 9 It is a three-dimensional diagram of another embodiment of the quantitative sampling and detection device according to the embodiment of the present utility model. Figure 8 The capacity of the capillary cavity 21 of the embodiment is greater than Figure 9 The capacity of the capillary lumen 21 of the embodiment. Of course, the types of collection heads 20 are not limited to these two. The type of collection head 20 can be provided based on the type of liquid being tested (blood, urine, saliva, etc.). Different test strips 40 are required for different test liquids. Select the corresponding collection head 20 and test strips 40 based on the type of liquid to be tested. Connect the collection head 20 to the main cavity 10; open the sealing cover 30, place the test strips 40 into the main cavity 10, and close the sealing cover 30.

[0050] Next, the collection phase begins. The collection port 22 is brought close to the liquid to be measured. Under the action of capillary action, the liquid enters the capillary cavity 21 to form a liquid sample, and the collection is completed.

[0051] Then, enter the detection phase. You can choose whether to add buffer according to the test needs. Press the accommodating cavity, and the air in the accommodating cavity is discharged through the one-way air-permeable structure of the sealing cover 30. Release the pressure, and the accommodating cavity begins to rebound and restore its original shape. Under the action of the pressure difference, the liquid sample in the capillary cavity 21 flows out from the transition port 23 and flows into the accommodating cavity through the first accommodating cavity port 11. At this time, the test paper 40 placed in the main cavity 10 near the first accommodating cavity port 11 contacts the liquid sample to produce a reaction, and the final test result is fed back to the test paper 40.

[0052] Thus, according to the quantitative sampling and testing device of the present invention, the capillary cavity 21 is unidirectionally connected to the main cavity 10, allowing the liquid sample to enter the capillary cavity 21 through the collection port 22. The collection head 20 is detachably mated to the main cavity 10, allowing the appropriate collection head 20 to be selected for different types of liquid samples based on the desired sample collection volume. The sealing cap 30 is unidirectionally breathable. Pressing the main cavity 10 allows the liquid sample to enter the main cavity 10 through the collection head 20. As the liquid sample reacts with the test paper 40 within the main cavity 10, the test results are displayed. The quantitative sampling and detection device of the present invention has a one-way connection between the capillary cavity 21 and the main cavity 10. The collected liquid sample is collected through the capillary cavity 21, and the sample volume can be accurately controlled. The collection head 20 and the main cavity 10 are detachably connected. The corresponding collection head 20 is selected according to different types of liquid samples, and the corresponding capillary cavity space meets the sample collection volume required for different types of liquid samples. By pressing the main cavity 10, the liquid sample enters the main cavity 10 from the collection head 20, and the liquid sample reacts with the test paper 40 to present the test results. The process is simple and error-prone.

[0053] According to one embodiment of the present invention, the first accommodating cavity opening 11 is formed into an expanded shape that is larger on the outside and smaller on the inside.

[0054] In other words, if Figure 5 As shown, in order to better fit the transition opening 23 and prevent the measured liquid in the accommodating cavity from flowing out, the first accommodating cavity opening 11 is configured to be expanded with a larger outer portion and a smaller inner portion to match the transition opening 23. A sealing ring can also be added between the first accommodating cavity opening 11 and the transition opening 23 to improve the sealing effect.

[0055] In some specific embodiments of the present invention, a card slot 13 extending from the first accommodating cavity opening 11 to the second accommodating cavity opening 12 is provided on the inner wall of the main cavity, and the card slot 13 fixes the test paper 40 .

[0056] That is to say, if Figure 4 As shown, a card slot 13 extending from the first accommodating cavity opening 11 to the second accommodating cavity opening 12 is provided on the inner wall of the main cavity. There are preferably two card slots 13, and the test paper 40 can slide from the second accommodating cavity opening 12 to the first accommodating cavity opening 11 along the card slot 13.

[0057] The card slot 13 is provided on the inner wall of the main cavity to fix the test paper 40, thereby preventing the test paper 40 from shaking and affecting the test results. At the same time, it is convenient to take and put the test paper 40, thereby improving work efficiency.

[0058] In some specific embodiments of the present invention, a side opposite to the card slot 13 is formed as a transparent observation window 14 .

[0059] In other words, a transparent observation window 14 is provided on the side opposite to the card slot 13, so that the test results can be observed more conveniently and the test results can be quickly read without opening the sealing cover 30.

[0060] In some specific embodiments of the present invention, a first clamping portion 24 is provided at one end of the collection head 20 close to the main cavity 10, and a second clamping portion 15 is provided at an opposite position of the main cavity 10, and the first clamping portion 24 and the second clamping portion 15 are clamped to each other.

[0061] In other words, in order to quickly realize the assembly of the collection head 20 and the main cavity 10, the two are connected in a detachable manner, preferably by a snap-on structure. Figure 1 As shown, a first engaging portion 24 is provided at one end of the collection head 20, proximal to the main chamber 10, and a second engaging portion 15 is provided at an opposing position on the main chamber 10. Preferably, there are two first engaging portions 24, one located on opposite sides of the capillary lumen 21. The second engaging portion 15 corresponds to the position of the first engaging portion 24. The engaging engagement of the first engaging portion 24 and the second engaging portion 15 allows for rapid assembly of the collection head 20 and the main chamber 10.

[0062] In some specific embodiments of the present invention, a compression spring 50 is provided between the collection head 20 and the main cavity 10 .

[0063] When the first and second engaging portions 24, 15 are engaged, the compression spring 50 is compressed, providing a preload force for the connection between the collection head 20 and the main chamber 10. This preload force generates a repulsive force between the collection head 20 and the main chamber 10, preventing the collection head 20 from moving away from the main chamber 10 due to the engagement between the first and second engaging portions 24, 15. The preload force of the compression spring 50 and the engagement between the first and second engaging portions 24, 15 create a balanced state, ensuring a secure and airtight connection between the collection head 20 and the main chamber 10.

[0064] In some specific embodiments of the present invention, a diaphragm 60 is provided at the first accommodating cavity opening 11 .

[0065] In other words, if Figure 1 As shown, a diaphragm 60 is provided at the first accommodating cavity opening 11 , and the diaphragm 60 can further enhance the sealing between the main cavity 10 and the collection head 20 .

[0066] After the capillary cavity 21 has collected the liquid sample, the collection head 20 is pressed downward, and the tapered transition port 23 is slightly pushed out due to the upward force, thereby puncturing the diaphragm 60. The receiving cavity is then squeezed to allow the liquid sample in the capillary cavity 21 to flow into the receiving cavity for testing.

[0067] By providing the diaphragm 60 at the first accommodating cavity opening 11 , the sealing between the main cavity 10 and the collection head 20 can be enhanced, thereby preventing a small amount of buffer solution from flowing into the capillary cavity 21 .

[0068] In some specific embodiments of the present invention, a one-way air valve is provided in the sealing cover 30 , and the sealing cover 30 and the first accommodating cavity opening 11 are in a plug-in interference fit.

[0069] In other words, a one-way air valve is provided within the sealing cover 30, achieving a one-way air permeability function through the valve, resulting in a simple structure and manageable costs. The sealing cover 30 and the first accommodating cavity opening 11 are provided with a plug-in interference fit. Because the accommodating cavity is made of a ductile material, the first accommodating cavity opening 11 possesses a certain degree of toughness. By securing the sealing cover 30 to the first accommodating cavity opening 11 in a plug-in manner, the sealing cover 30 can be quickly assembled and disassembled, improving work efficiency. The interference fit between the two prevents leakage of the liquid sample.

[0070] In some specific embodiments of the present invention, the accommodating cavity is formed as a gathering cavity 16 at the first accommodating cavity opening 11 .

[0071] That is, a collection chamber 16 is formed near the first receiving chamber opening 11. The collection chamber 16 can accommodate a buffer solution. When the liquid sample enters the receiving chamber through the first receiving chamber opening 11, it immediately reaches the collection chamber 16 and comes into contact with the buffer solution and the test paper 40.

[0072] In some specific embodiments of the present invention, a drainage channel 17 is provided between the gathering cavity 16 and the second accommodating cavity opening 12 .

[0073] In other words, a drainage channel 17 is provided between the collecting chamber 16 and the second receiving chamber opening 12. The drainage channel 17 is high around the periphery and low in the center, forming a funnel-shaped structure. This can drain the liquid in the receiving chamber and collect it into the collecting chamber 16. The drainage function of the drainage channel 17 can collect the liquid in the receiving chamber, allowing the buffer solution and the liquid sample to quickly contact each other, allowing for rapid testing and improving work efficiency.

[0074] In summary, according to the quantitative sampling and testing device of the present invention, the capillary cavity 21 is unidirectionally connected to the main cavity 10, allowing the liquid sample to enter the capillary cavity 21 through the collection port 22. The collection head 20 is detachably coupled to the main cavity 10, allowing the appropriate collection head 20 to be selected for different types of liquid samples based on the desired sample collection volume. The sealing cap 30 is unidirectionally breathable. Pressing the main cavity 10 allows the liquid sample to enter the collection head 20 through the main cavity 10. As the liquid sample reacts with the test paper 40 within the main cavity 10, the test results are displayed. The quantitative sampling and detection device of the present invention has a one-way connection between the capillary cavity 21 and the main cavity 10. The collected liquid sample is collected through the capillary cavity 21, and the sample volume can be accurately controlled. The collection head 20 and the main cavity 10 are detachably connected. The corresponding collection head 20 is selected according to different types of liquid samples, and the corresponding capillary cavity space meets the sample collection volume required for different types of liquid samples. By pressing the main cavity 10, the liquid sample enters the main cavity 10 from the collection head 20, and the liquid sample reacts with the test paper 40 to present the test results. The process is simple and error-prone.

[0075] Of course, for those skilled in the art, other structures and working principles of the quantitative sampling detection device are understandable and achievable, and will not be described in detail in the present utility model.

[0076] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art will appreciate that the above examples are for illustration only and are not intended to limit the scope of the present invention. Those skilled in the art will appreciate that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A quantitative sampling and detection device, characterized in that: include: A main cavity (10), wherein a receiving cavity is defined in the main cavity (10), the receiving cavity can rebound after being pressed, and the receiving cavity comprises a first receiving cavity opening (11) and a second receiving cavity opening (12) arranged opposite to each other; A collection head (20), wherein the collection head (20) is detachably connected to the main cavity (10), and the collection head (20) comprises a capillary cavity (21) extending therethrough, wherein one end of the capillary cavity (21) is a collection port (22), and the other end of the capillary cavity (21) is a constricted transition port (23), and the transition port (23) is unidirectionally connected to the first accommodating cavity port (11); A sealing cover (30), the sealing cover (30) being detachably connected to the second accommodating cavity opening (12); when the accommodating cavity is pressed, the sealing cover (30) is unidirectionally breathable; A test paper (40) is placed in the main cavity (10) near the first accommodating cavity opening (11).

2. The quantitative sampling and detection device according to claim 1, characterized in that: The first accommodating cavity opening (11) is formed into an expanded shape with a larger outer portion and a smaller inner portion.

3. The quantitative sampling and detection device according to claim 1, characterized in that: The inner wall of the main cavity is provided with a card slot (13) extending from the first accommodating cavity opening (11) to the second accommodating cavity opening (12), and the card slot (13) fixes the test paper (40).

4. The quantitative sampling and detection device according to claim 3, characterized in that: One side opposite to the card slot (13) is formed as a transparent observation window (14).

5. The quantitative sampling and detection device according to claim 1, characterized in that: A first clamping portion (24) is provided at one end of the collection head (20) close to the main cavity (10), and a second clamping portion (15) is provided at a position opposite to the main cavity (10), wherein the first clamping portion (24) and the second clamping portion (15) are clamped to each other.

6. The quantitative sampling and detection device according to claim 5, characterized in that: A compression spring (50) is provided between the collection head (20) and the main cavity (10).

7. The quantitative sampling and detection device according to claim 6, characterized in that: The first accommodating cavity opening (11) is provided with a diaphragm (60).

8. The quantitative sampling and detection device according to claim 1, characterized in that: A one-way air-permeable valve is provided in the sealing cover (30), and the sealing cover (30) and the first accommodating cavity opening (11) are in a plug-in interference fit.

9. The quantitative sampling and detection device according to claim 1, characterized in that: The accommodating cavity is formed as a gathering cavity (16) at the first accommodating cavity opening (11).

10. The quantitative sampling and detection device according to claim 8, characterized in that: A drainage channel (17) is provided between the gathering cavity (16) and the second accommodating cavity opening (12).

Images