Sample adding device for detection system and detection system

Abstract

The utility model discloses a sample adding device for a detection system and the detection system.The sample adding device comprises a sample adding connecting piece, a first containing cavity, a second containing cavity and an installation cavity used for detachably installing a reagent tube are formed in the sample adding connecting piece, the first containing cavity is used for installing a dropper, and the second containing cavity is used for installing a reagent tube; the second containing cavity is used for containing a plurality of plugging pieces capable of vertically moving, and the mounting cavity is formed below the first containing cavity and the second containing cavity and communicates with the first containing cavity and the second containing cavity; the downward pressing piece is arranged on the sample adding connecting piece and is used for applying downward pressing force to the plugging piece. According to the sample adding device for the detection system and the detection system, an operator can be prevented from frequently and manually plugging the reagent tube in the process of adding samples for multiple times, the labor intensity of the operator can be reduced, and the sample adding efficiency can be improved.

Description

Technical Field

[0001] The present application belongs to the field of medical detection technology, and specifically relates to a sample adding device and a detection system for a detection system. Background Art

[0002] In the medical diagnosis industry, adding samples is an indispensable operation before diagnosis. In the prior art, operators usually hold a quantitative dropper assembly (such as CN220027061U) to add samples to a reagent tube. When adding samples, the operator must hold the quantitative dropper assembly and the reagent tube with both hands respectively and squeeze the quantitative dropper assembly to add samples. After the addition of samples is completed, the operator must put down the quantitative dropper assembly and pick up the sealing plug to seal the tube mouth of the reagent tube. If multiple additions are required, the operator must frequently pick up the sealing plug to seal the tube mouth of the reagent tube. The above situation will increase the labor intensity of the operator and reduce the operator's sample addition efficiency. Utility Model Content

[0003] The purpose of the present application is to provide a sample adding device and a detection system for a detection system, which can avoid the operator from frequently manually blocking the reagent tube during multiple sample adding processes, can reduce the labor intensity of the operator, and is conducive to improving the sample adding efficiency.

[0004] In order to achieve the above-mentioned object, the first aspect of the present application provides a sample adding device for a detection system, the detection system comprising a dropper, a reagent tube and a plugging member, the sample adding device comprising:

[0005] A sample adding connector, on which a first accommodating cavity, a second accommodating cavity and an installation cavity for detachably installing a reagent tube are formed, the first accommodating cavity is used to install a dropper, the second accommodating cavity is used to accommodate a plurality of vertically movable blocking members, and the installation cavity is formed below the first accommodating cavity and the second accommodating cavity and is in communication with the first accommodating cavity and the second accommodating cavity;

[0006] The downward pressure piece is arranged on the sample adding connecting piece and is used to apply downward pressure to the blocking piece.

[0007] In an embodiment of the utility model, a vertically distributed pressing member installation groove is formed on the cavity wall of the second accommodating cavity, and the pressing member includes a connecting portion, a pressing portion and a force-bearing portion. The connecting portion is vertically movably arranged in the pressing member installation groove, the pressing portion is arranged at the first end of the connecting portion and is located in the second accommodating cavity, and the force-bearing portion is arranged at the second end of the connecting portion and is located on the outside of the sample adding connecting member.

[0008] In an embodiment of the utility model, anti-slip grooves are formed on the vertical side wall of the force-bearing portion on the side away from the sample adding connector.

[0009] In an embodiment of the present utility model, the anti-slip pattern includes a plurality of strip-shaped protrusions distributed at intervals in the vertical direction.

[0010] In an embodiment of the utility model, the outer side surface of the strip-shaped protrusion is in an arc shape.

[0011] In an embodiment of the present invention, the force-bearing portion is in the shape of a flat plate and extends in a direction away from the second accommodating cavity.

[0012] In an embodiment of the present invention, the pressing portion is cylindrical.

[0013] In an embodiment of the utility model, an entrance for the blocking member and the pressing portion to enter the second accommodating cavity is formed at the top of the second accommodating cavity, and the pressing member installation groove is vertically penetrated.

[0014] In an embodiment of the utility model, a plurality of blocking member limiting protrusions which are distributed at intervals in the vertical direction and are used to limit the blocking member are formed on the cavity wall of the second accommodating cavity.

[0015] A second aspect of the present application provides a detection system, which includes the above-mentioned sample adding device for the detection system.

[0016] It can be known from the above technical scheme that the sample adding device includes a sample adding connector and a pressing member, and the sample adding connector is formed with a first accommodating chamber, a second accommodating chamber and an installation chamber for detachably installing a reagent tube, the first accommodating chamber is used to install a dropper, and the second accommodating chamber is used to accommodate a plurality of vertically movable plugging members, and the installation chamber is formed below the first accommodating chamber and the second accommodating chamber and is connected to the first accommodating chamber and the second accommodating chamber; the pressing member is arranged on the sample adding connector and is used to apply downward pressure to the plugging member. In the process of continuous sample adding operation or multiple sample adding operation, the operator does not need to put down the quantitative dropper assembly and pick up the sealing plug to seal the tube mouth of the reagent tube after the sample adding is completed as in the prior art, nor does the operator need to place the plugging member in the second accommodating chamber every time, but only needs to apply downward pressure to the plugging member inside the second accommodating chamber through the pressing member to make it move downward until the lowest plugging member seals the tube mouth of the reagent tube, which effectively simplifies the operation process of sealing the tube mouth of the reagent tube, improves the convenience and efficiency of sealing the reagent tube, shortens the overall time of multiple sample adding, and improves the overall efficiency of multiple sample adding.

[0017] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In the drawings:

[0019] Figure 1 This is a schematic diagram of the use of the sample adding device in the embodiment of the utility model;

[0020] Figure 2 It is a cross-sectional schematic diagram of a sample adding connector in an embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of a sample adding connector in an embodiment of the utility model from a first viewing angle;

[0022] Figure 4 A second viewing angle schematic diagram of the sample adding connector in the embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the dropper in the embodiment of the utility model;

[0024] Figure 6 This is a schematic diagram of the structure of a reagent tube in an embodiment of the utility model;

[0025] Figure 7 This is a schematic diagram of the structure of the blocking member in the embodiment of the utility model;

[0026] Figure 8 It is a structural schematic diagram of the lower pressing member in the embodiment of the utility model.

[0027] Description of Reference Numerals

[0028] 1-dropper; 2-reagent tube; 3-sealing piece; 4-sample adding connecting piece; 401-first accommodating chamber; 402-second accommodating chamber; 4021-entrance; 403-installation chamber; 404-stopping protrusion of the sealing piece; 405-pressing piece installation groove; 406-first stop position; 407-second stop position; 408-stopping end face; 5-pressing piece; 501-connecting part; 502-pressing part; 503-force bearing part; 5031-anti-slip pattern; 5032-strip protrusion; 6-first stop protrusion assembly; 601-first stop protrusion strip; 602-second stop protrusion strip; 7-second stop protrusion assembly; 701-third stop protrusion strip; 702-fourth stop protrusion strip. DETAILED DESCRIPTION

[0029] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.

[0030] In the embodiment of the present application, a novel sample adding device for a detection system is provided. The detection system comprises a dropper 1 (such as Figure 5 As shown), reagent tube 2 (as Figure 6 As shown) and the blocking member 3 (as Figure 7 As shown), Figure 1-Figure 4 As shown, the sample adding device comprises:

[0031] The sample adding connecting piece 4 is formed with a first accommodating cavity 401, a second accommodating cavity 402 and an installation cavity 403 for detachably installing the reagent tube 2. The first accommodating cavity 401 is used to install the dropper 1. The second accommodating cavity 402 is arranged on one side of the first accommodating cavity 401 and is used to accommodate a plurality of vertically movable blocking members 3. The installation cavity 403 is formed below the first accommodating cavity 401 and the second accommodating cavity 402 and is in communication with the first accommodating cavity 401 and the second accommodating cavity 402.

[0032] The pressing member 5 is arranged on the sample adding connecting member 4 and is used to apply downward pressure to the blocking member 3 .

[0033] Specifically, the dropper 1 contains a sample to be dripped out, and the reagent tube 2 is used to contain the sample dripped out from the dropper 1. The reagent tube 2 includes a tube body and a dripping head, and the dripping head includes a connecting section detachably connected to the tube body and a liquid outlet section located below the connecting section; the plugging member 3 can be a sealing plug or a tube cover of the reagent tube 2, etc., which is used to plug the reagent tube 2; when it is necessary to add samples, the operator first inserts the dropper 1 from top to bottom into the first accommodating cavity 401 to complete the installation of the dropper 1. After the installation of the dropper 1 is completed, the dripping head of the dropper 1 faces downward; the operator then inserts multiple The blocking piece 3 is stacked up and down in the second accommodating cavity 402 (the installation order of the dropper 1 and the blocking piece 3 can be interchanged); after the multiple blocking pieces 3 are placed, the pressing piece 5 is installed, and the installed pressing piece 5 is above the blocking piece 3 at the highest position; after the dropper 1, the multiple blocking pieces 3 and the pressing piece 5 are installed, the operator opens the pipe mouth of the reagent tube 2 and installs the reagent tube 2 in the installation cavity 403. After the reagent tube 2 is installed, it is directly below the first accommodating cavity 401, and the interior of the reagent tube 2 can be connected to the liquid outlet on the liquid outlet section.

[0034] Furthermore, in this embodiment, an extrusion body is formed on the top of the tube body. When the extrusion body is pressed downward, the internal pressure of the dropper 1 increases, and the sample can flow out from the liquid outlet on the liquid outlet section. Therefore, after the dropper 1, the plugging member 3, the pressing member 5 and the reagent tube 2 are all installed, the operator squeezes the extrusion body of the dropper 1 to make the sample in the dropper 1 flow out and enter the reagent tube 2; in the present embodiment, the first accommodating chamber 401 and the second accommodating chamber 402 are distributed along the lateral interval, and after the sample is dripped, a lateral thrust is applied to the reagent tube 2, so that the reagent tube 2 moves laterally from the bottom of the first accommodating chamber 401 to the bottom of the second accommodating chamber 402; after the reagent tube 2 is laterally moved into place, the operator pushes the pressing member 5 downward, and the pressing member 5 simultaneously applies downward pressure to multiple plugging members 3, so that multiple plugging members 3 stacked up and down move downward at the same time, until the plugging member 3 at the bottom blocks the tube mouth of the reagent tube 2, and after the reagent tube 2 is blocked, the operator removes the reagent tube 2 and the plugging member 3 as a whole from the sample addition connector 4, and the single sample addition of the reagent tube 2 is completed. During continuous sampling operations or multiple sampling operations, the operator does not need to put down the quantitative dropper assembly and pick up the sealing plug to seal the mouth of the reagent tube 2 after the sampling is completed as in the prior art, nor does the operator need to place the sealing member 3 into the second accommodating chamber 402 every time. The operator only needs to apply downward pressure to the sealing member 3 inside the second accommodating chamber 402 through the pressing member 5 to move it downward until the bottom sealing member 3 seals the mouth of the reagent tube 2, which effectively simplifies the operating procedure of sealing the mouth of the reagent tube 2, improves the convenience and efficiency of sealing the reagent tube 2, shortens the overall time of multiple sampling, and improves the overall efficiency of multiple sampling.

[0035] In one embodiment of the utility model, the installation cavity 403 is formed by being recessed upward from the bottom surface of the sample adding connector 4. The installation cavity 403 with this structural form is convenient for the operator to open the tube mouth of the reagent tube 2, insert the reagent tube 2 upward and install it in the installation cavity 403, so that the operator can quickly and conveniently install the reagent tube 2; the spacing between the two vertical side walls of the installation cavity 403 in the longitudinal direction is consistent with the maximum outer diameter of the reagent tube 2. This structural design enables the reagent tube 2 to be tightly connected to the sample adding device after installation, thereby improving the reliability of the sample adding device.

[0036] Furthermore, the dropper 1 in this embodiment is a quantitative dropper. The use of a quantitative dropper for quantitative addition can ensure the accuracy of the sample addition amount, which is conducive to further improving the accuracy of subsequent sample detection.

[0037] In one embodiment of the utility model, a vertically distributed pressing member installation groove 405 is formed on the cavity wall of the second accommodating cavity 402 away from the first accommodating cavity 401, and the pressing member 5 includes a connecting portion 501, a pressing portion 502 and a force-bearing portion 503. The connecting portion 501 is vertically movably arranged in the pressing member installation groove 405, the pressing portion 502 is arranged at the first end of the connecting portion 501 and is located in the second accommodating cavity 402, and the force-bearing portion 503 is arranged at the second end of the connecting portion 501 and is located on the outside of the sample adding connector 4.

[0038] Specifically, the operator applies a downward force to the force-bearing portion 503, and the force-bearing portion 503 transmits the force to the connecting portion 501 and the pressing portion 502 in sequence, and the pressing portion 502 transmits the force to multiple blocking members 3, so that the multiple blocking members 3 move downward at the same time. The pressing portion 5 has a simple structure and a reasonable design, and it is also convenient for the operator to apply pressure to the blocking members 3; further, the force-bearing portion 503 is flat and distributed vertically, and the force-bearing portion 503 is close to the vertical side wall of the sample adding connector 4 and is in contact with the outer side wall of the sample adding connector 4, which improves the structural compactness of the sample adding device and is beneficial to reducing the space occupied by the sample adding device.

[0039] In one embodiment of the present invention, an anti-skid pattern 5031 is formed on the vertical side wall of the force-bearing part 503 away from the sample-adding connector 4, wherein the anti-skid pattern 5031 includes a plurality of vertically spaced strip-shaped protrusions 5032, and the outer side surface of the strip-shaped protrusions 5032 is in the shape of an arc. Specifically, in this embodiment, a single strip-shaped protrusion is arranged in the horizontal direction, and the vertical cross-section of the strip-shaped protrusion 5032 can be semicircular. This type of anti-skid pattern 5031 can increase the friction between the operator and the force-bearing part 503, play a good anti-skid effect, and improve the effectiveness of the force applied to the downward pressing member 5, and also has the advantages of simple structure and easy processing and manufacturing.

[0040] In another embodiment of the utility model, the force-bearing portion 503 is flat and extends in a direction away from the second accommodating cavity 402. The top surface of the force-bearing portion 503 with this structural design has a larger contact area. There is no need to additionally set up anti-slip grooves 5031, which also makes it easy for the operator to contact the force-bearing portion 503 and apply downward pressure to the force-bearing portion 503.

[0041] In one embodiment of the utility model, the pressing portion 502 is cylindrical. Specifically, the outer diameter of the pressing portion 502 is consistent with the inner diameter of the second accommodating cavity 402. The above structural design makes the pressing member 5 easy to produce and manufacture, and also allows the pressing portion 502 and the blocking member 3 to have a sufficient contact area, which is beneficial for the pressing portion 502 to uniformly apply downward pressure to the blocking member 3.

[0042] In one embodiment of the present invention, an inlet 4021 for the blocking member 3 and the pressing portion 502 to enter the second accommodating cavity 402 is formed at the top of the second accommodating cavity 402, and the pressing member installation groove 405 is vertically penetrated. Specifically, after the multiple blocking members 3 in the second accommodating chamber 402 have been used up, there is no blocking member 3 below the pressing member 5, and the operator can continue to apply force to the pressing member 5 to make it continue to move downward until the connecting portion 501 moves out of the pressing member mounting groove 405 through the bottom opening of the pressing member mounting groove 405, thereby separating the pressing member 5 and the sample adding connecting member 4; thereafter, the operator can place multiple blocking members 3 into the second accommodating chamber 402 again through the entrance 4021. After the blocking members 3 are placed, the pressing member 5 can be clamped in the pressing member mounting groove 405 through the top opening of the pressing member mounting groove 405 to complete the installation of the pressing member 5 again, that is, the vertical through-connection setting of the entrance 4021 and the pressing member mounting groove 405 can realize the rapid installation of the blocking members 3 and the pressing member 5, so that the sample adding device can be reused, thereby improving the practicality and economy of the sample adding device.

[0043] In an embodiment of the present invention, a plurality of blocking member limiting protrusions 404 which are distributed at intervals in the vertical direction and are used to limit the blocking member 3 are formed on the cavity wall of the second accommodating cavity 402 .

[0044] Specifically, a ring-shaped limiting portion that cooperates with the sealing member limiting protrusion 404 is formed on the sealing member 3. The setting of the sealing member limiting protrusion 404 can make the distance between two adjacent sealing members 3 above and below appropriate, avoiding the upper and lower sealing members 3 from being embedded together and sealing on one reagent tube 2 at the same time, further improving the reliability and convenience of the sample adding device.

[0045] In one embodiment of the utility model, the installation cavity 403 is formed with an outlet for the removal of the reagent tube 2 at one end close to the second accommodating cavity 402, so as to facilitate the removal of the reagent tube 2 and the sealing member 3 from the sample loading connector 4 after the sealing cooperation is completed, thereby reducing the difficulty and time required to remove the combination of the reagent tube 2 and the sealing member 3 from the sample loading connector 4, and is conducive to further improving the sample loading efficiency.

[0046] In one embodiment of the present invention, a first limiting protrusion assembly 6 for limiting the position of the reagent tube 2 is provided on the cavity wall of the installation cavity 403 near the outlet end. Figure 3 As shown, the first limiting protrusion assembly 6 includes a first limiting protrusion 601 and a second limiting protrusion 602, both of which are vertically distributed. The first limiting protrusion 601 and the second limiting protrusion 602 are located on opposite sides of the cavity wall of the installation cavity 403 and are close to the exit. When the reagent tube 2 moves from the bottom of the first accommodating cavity 401 to the bottom of the first accommodating cavity 401, the first limiting protrusion assembly 6 can effectively prevent the reagent tube 2 from accidentally falling off from the installation cavity 403.

[0047] Furthermore, the horizontal cross-sections of the first limiting ridge 601 and the second limiting ridge 602 are semicircular or U-shaped. The first limiting ridge 601 and the second limiting ridge 602 with the above cross-sectional shapes can play a good limiting role and have the advantages of simple structure and easy production.

[0048] Furthermore, the material of the first limiting protrusion component 6 includes bread glue or silicone, and the cost of the above materials is relatively low, which is beneficial to reducing the overall manufacturing cost of the sample adding device.

[0049] In one embodiment of the utility model, a first stop position 406 and a second stop position 407 are formed in the installation cavity 403 and are located below the first accommodating cavity 401 and the second accommodating cavity 402 respectively, and a second limiting protrusion assembly 7 is provided on the cavity wall of the installation cavity 403 and is located between the first stop position 406 and the second stop position 407.

[0050] Specifically, when installing the reagent tube 2, the reagent tube 2 needs to be inserted upward to the position of the first stop position 406 of the installation cavity 403; after the sample is dripped, the reagent tube 2 needs to be moved from the first stop position 406 to the second stop position 407 so that the blocking member 3 located above the second stop position 407 can block the reagent tube 2. Figure 3 As shown, the second limiting protrusion assembly 7 includes a third limiting protrusion 701 and a fourth limiting protrusion 702 which are both vertically distributed. The third limiting protrusion 701 and the fourth limiting protrusion 702 are located on opposite sides of the cavity wall of the installation cavity 403, which can prevent the reagent tube 2 from moving from the first stop position 406 to the second stop position 407 due to accidental external force during the sample dripping process, and can also prevent the reagent tube 2 from moving from the second stop position 407 to the first stop position 406 due to accidental external force during the process of sealing the reagent tube 2, thereby improving the reliability of the sample adding device.

[0051] Similarly, further, the horizontal cross-sections of the third limiting ridge 701 and the fourth limiting ridge 702 are semicircular or U-shaped. The third limiting ridge 701 and the fourth limiting ridge 702 with the above cross-sectional shapes can better play a limiting role and have the advantages of simple structure and easy production.

[0052] Similarly, further, the material of the second limiting protrusion component 7 includes bread glue or silicone, and the cost of the above materials is relatively low, which is conducive to further reducing the overall manufacturing cost of the sample adding device.

[0053] In one embodiment of the present invention, a limiting end surface 408 for abutting against the step surface of the dropper 1 is formed inside the first accommodating cavity 401 .

[0054] Specifically, the step surface in this embodiment is the lower end surface of the connecting section. After the dropper 1 is installed in the first accommodating cavity 401, the lower end surface of the connecting section abuts against the limiting end surface 408 to limit the dropper 1 from moving further downward. After the operator opens the mouth of the reagent tube 2 and installs the reagent tube 2 in the installation cavity 403, the interior of the reagent tube 2 and the portion below the limiting end surface 408 of the first accommodating cavity 401 form a closed space. In the process of sample dripping, since the interior of the reagent tube 2 and the portion below the limiting end surface 408 of the first accommodating cavity 401 form a closed space, the sample falls in the closed space and will not come into contact with the outside air. Impurities in the air will not enter the sample, achieving pollution-free sample addition, which is conducive to improving the accuracy of subsequent sample detection, and also enables the sample addition process to be carried out in a non-biological safety cabinet, expanding the range of the sample addition environment.

[0055] In one embodiment of the utility model, the loading device in this embodiment also includes a well plate, on which a reagent tube accommodating cavity is formed, which is concave from top to bottom and is used to accommodate part of the reagent tube 2. Before loading, the operator can insert the reagent tube 2 into the reagent tube accommodating cavity of the well plate after installing it in the installation cavity 403, and after squeezing the dropper 1, apply force to the loading connector 4 as a whole, so that the whole composed of the well plate and the reagent tube 2 moves relative to the loading connector 4, and the reagent tube 2 can be moved from the bottom of the first accommodating cavity 401 to the bottom of the second accommodating cavity 402 in the installation cavity 403. The above process does not require the operator to hold the reagent tube 2 and apply force to it, thereby improving the convenience of moving the reagent tube 2.

[0056] Another embodiment of the present application provides a novel detection system, which includes the sample adding device for the detection system in the above embodiment.

[0057] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0058] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0060] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A sample adding device for a detection system, the detection system comprising a dropper (1), a reagent tube (2) and a blocking member (3), characterized in that: The sample adding device comprises: A sample adding connector (4), wherein the sample adding connector (4) is formed with a first accommodating cavity (401), a second accommodating cavity (402) and an installation cavity (403) for detachably installing the reagent tube (2), wherein the first accommodating cavity (401) is used to install the dropper (1), and the second accommodating cavity (402) is used to accommodate a plurality of vertically movable blocking members (3), and the installation cavity (403) is formed below the first accommodating cavity (401) and the second accommodating cavity (402) and is in communication with the first accommodating cavity (401) and the second accommodating cavity (402); A downward pressing member (5) is arranged on the sample adding connecting member (4) and is used to apply downward pressure to the blocking member (3).

2. The sample adding device for the detection system according to claim 1, characterized in that: A vertically distributed pressing member installation groove (405) is formed on the cavity wall of the second accommodating cavity (402); the pressing member (5) comprises a connecting portion (501), a pressing portion (502) and a force-bearing portion (503); the connecting portion (501) is vertically movably arranged in the pressing member installation groove (405); the pressing portion (502) is arranged at a first end of the connecting portion (501) and is located in the second accommodating cavity (402); and the force-bearing portion (503) is arranged at a second end of the connecting portion (501) and is located on the outside of the sample adding connecting member (4).

3. The sample adding device for the detection system according to claim 2, characterized in that: An anti-slip pattern (5031) is formed on the vertical side wall of the force-bearing portion (503) at a side away from the sample adding connector (4).

4. The sample adding device for the detection system according to claim 3, characterized in that: The anti-slip pattern (5031) includes a plurality of strip-shaped protrusions (5032) distributed vertically at intervals.

5. The sample adding device for the detection system according to claim 4, characterized in that: The outer side surface of the strip-shaped protrusion (5032) is in an arc shape.

6. The sample adding device for the detection system according to claim 2, characterized in that: The force-bearing portion (503) is in the shape of a flat plate and extends in a direction away from the second accommodating cavity (402).

7. The sample adding device for a detection system according to claim 2, characterized in that: The pressing portion (502) is cylindrical.

8. The sample adding device for a detection system according to claim 2, characterized in that: An entrance (4021) for the blocking member (3) and the pressing portion (502) to enter the second accommodating cavity (402) is formed at the top of the second accommodating cavity (402), and the pressing member installation groove (405) is vertically penetrated.

9. The sample adding device for a detection system according to any one of claims 1 to 8, characterized in that: A plurality of blocking member limiting protrusions (404) which are distributed at intervals in the vertical direction and are used to limit the position of the blocking member (3) are formed on the cavity wall of the second accommodating cavity (402).

10. A detection system, characterized in that: The detection system comprises a sample adding device for a detection system according to any one of claims 1-9.

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