Detection consumables and detection devices

Abstract

The application discloses a detection consumable and a detection device. The detection consumable comprises a containing tube, an inner part of the containing tube is formed with a first containing cavity and a second containing cavity for containing a first reagent and a second reagent respectively, the second containing cavity is located at the bottom of the first containing cavity and can communicate with the first containing cavity, a partition is arranged at the top of the first containing cavity and is used for separating the first containing cavity and the second containing cavity, a piercing rod assembly is vertically movably inserted in the first containing cavity and can pierce the partition downward, and a sample adding cover assembly is detachably arranged at the top of the containing tube and can apply a downward pressure to the piercing rod assembly. The detection consumable has the advantages of convenient production and manufacture and favorable improvement of nucleic acid detection efficiency.

Description

Technical Field

[0001] This application belongs to the field of nucleic acid detection technology, specifically relating to a detection consumable and a detection device. Background Technology

[0002] Nucleic acids are the carriers of genetic information in living organisms and are essential components of all known life forms. There are two main types of nucleic acids: DNA and RNA, which are primarily found in the cell nucleus and exist in a state bound to proteins. With the rapid development of molecular biology, the research and analysis of nucleic acids are increasingly being promoted and applied in fields such as clinical diagnosis, food safety, environmental monitoring, and agriculture, forestry, and animal husbandry.

[0003] The existing nucleic acid testing process requires mixing samples and various reagents to obtain the nucleic acid to be tested. Before mixing, the samples and reagents are placed in different containers. During mixing, the two sets of containers containing the samples and reagents are assembled together. This results in the need to manufacture multiple containers, which increases the manufacturing cost. In addition, time is spent assembling the two sets of containers, which increases the time required for nucleic acid testing and reduces the efficiency of nucleic acid testing. Utility Model Content

[0004] The purpose of this application is to provide a testing consumable and a testing device, which has the advantages of being easy to manufacture and improving the efficiency of nucleic acid testing.

[0005] To achieve the above objectives, the first aspect of this application provides a testing consumable, which includes: The container tube has a first container cavity and a second container cavity formed inside for respectively containing a first reagent and a second reagent. The second container cavity is located at the bottom of the first container cavity and can communicate with the first container cavity. A separator is disposed at the top of the first receiving cavity and is used to separate the first receiving cavity from the second receiving cavity; The piercing rod assembly is vertically movable and inserted into the first receiving cavity, and is capable of piercing the partition downwards; The sample cap assembly is detachably mounted on top of the receiving tube and is capable of applying downward pressure to the piercing rod assembly.

[0006] In embodiments of this application, the receiving tube includes: The first receiving tube has a first receiving cavity formed inside it; The second receiving tube is located at the bottom of the first receiving tube and forms a second receiving cavity. The second receiving tube and the first receiving tube are integrally injection molded.

[0007] In the embodiments of this application, the second receiving tube protrudes downward from the bottom surface of the first receiving tube, the inner diameter of the second receiving cavity gradually decreases from top to bottom, and the testing consumables also include a protective cover disposed on the outside of the second receiving tube and used to protect the second receiving tube.

[0008] In an embodiment of this application, the first receiving cavity includes a first cavity and a second cavity. The second cavity is located inside the first cavity and communicates with the first cavity. A separator is disposed between the second cavity and the second receiving cavity. The receiving tube also includes a plurality of support portions extending upward from the top of the second cavity for inserting the piercing rod assembly. The plurality of support portions are distributed circumferentially along the second cavity and together form a sliding space for a portion of the piercing rod assembly to extend into.

[0009] In embodiments of this application, the sliding space and the second cavity together form a piston space, and an annular limiting end face is formed at the bottom of the piston space. A separator is disposed above the annular limiting end face, and the piercing rod assembly includes: The piston is vertically movable in the piston space. The outer peripheral wall of the piston is in close contact with the inner side wall of the piston space. When the sample cap assembly does not apply downward pressure to the piercing rod assembly, the piston is located at the top of the piston space. A piercing rod is inserted into the piston and forms a piercing tip, with part of the piercing tip protruding downwards from the bottom wall of the piston.

[0010] In an embodiment of this application, the piercing rod includes a piercing rod body and a baffle portion. The piercing tip is formed on the piercing rod body, and the baffle portion is disposed on the peripheral wall of the piercing rod body and slides in contact with the cavity wall of the first receiving cavity. An avoidance notch is also formed on the baffle portion.

[0011] In embodiments of this application, the sample addition cap assembly includes: The sample filling cap is detachably placed on top of the receiving tube and has a vertical through mounting hole. The pressure post is vertically movable and inserted into the mounting hole, and can abut against the piercing rod assembly.

[0012] In an embodiment of this application, a positioning end face is formed on the sample filling cover for installing and positioning the pressure column.

[0013] In embodiments of this application, the sample cap assembly further includes a sealing ring disposed on the wall of the mounting hole and used to seal the gap between the wall of the mounting hole and the pressure post.

[0014] A second aspect of this application provides a testing apparatus that includes the aforementioned testing consumables.

[0015] As can be seen from the above technical solution, the testing consumable includes a receiving tube, a separator, a piercing rod assembly, and a sample cap assembly. The receiving tube has a first receiving cavity and a second receiving cavity formed inside, which are used to receive the first reagent and the second reagent, respectively. The second receiving cavity is located at the bottom of the first receiving cavity and can communicate with the first receiving cavity. The separator is disposed at the top of the first receiving cavity and is used to separate the first receiving cavity and the second receiving cavity. The piercing rod assembly is vertically movable and inserted into the first receiving cavity and can pierce the separator downward. The sample cap assembly is detachably disposed at the top of the receiving tube and can apply downward pressure to the piercing rod assembly. The testing consumable has a simple structure. The inside of the receiving tube forms a first receiving cavity and a second receiving cavity to respectively hold the first reagent and the second reagent. A separator is set to separate the first receiving cavity and the second receiving cavity. When using the testing consumable, a piercing rod assembly moves downward and pierces the separator, allowing the first reagent in the first receiving cavity to flow into the second receiving cavity and mix with the second reagent. The above design avoids the need to produce reagent tubes to hold the first reagent and the second reagent separately, reduces the number of parts of the testing consumable, and eliminates the need to assemble the two sets of reagent tubes to hold the first reagent and the second reagent respectively, saving time in the overall nucleic acid testing process and improving the efficiency of nucleic acid testing.

[0016] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 This is a schematic diagram of the exploded structure of the testing consumables in the embodiments of this application; Figure 2 This is a schematic diagram of the structure of the testing consumables in the embodiments of this application.

[0018] Explanation of reference numerals in the attached figures 1-Receiving tube; 101-First receiving cavity; 102-Second receiving cavity; 103-First receiving tube section; 104-Second receiving tube section; 105-First cavity body; 106-Second cavity body; 107-Supporting part; 108-Sliding space; 2-Separator; 3-Piercing rod assembly; 301-Piston; 302-Piercing rod; 303-Piercing tip; 304-Piercing rod body; 305-Baffle; 4-Sample cap assembly; 401-Sample cap; 402-Mounting hole; 403-Pressure column; 404-Positioning end face; 405-Sealing ring; 406-Plug; 407-Connecting cylinder; 408-Connecting ring; 409-Columnar part; 410-Inverted frustum part; 5-Protective cap; 501-Third receiving cavity; 6-Second reagent. Detailed Implementation

[0019] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0020] Embodiments of this application provide a testing consumable, such as Figure 1 and Figure 2 As shown, the testing consumables include: The container tube 1 has a first receiving cavity 101 and a second receiving cavity 102 formed inside the container tube 1 for respectively receiving the first reagent and the second reagent 6. The second receiving cavity 102 is located at the bottom of the first receiving cavity 101 and can communicate with the first receiving cavity 101. The separator 2 is disposed on the top of the first receiving cavity 101 and is used to separate the first receiving cavity 101 and the second receiving cavity 102. The piercing rod assembly 3 is vertically movable and inserted into the first receiving cavity 101 and is capable of piercing the partition 2 downwards; The sample cap assembly 4 is detachably mounted on top of the receiving tube 1 and is capable of applying downward pressure to the piercing rod assembly 3.

[0021] Specifically, the detection consumable in this embodiment is suitable for a detection device used for nucleic acid detection. The top of the receiving tube 1 has an opening communicating with the first receiving cavity 101, and the sample cap assembly 4 is used to seal the opening. Before using the detection consumable, the second receiving cavity 102 pre-stores the second reagent 6 (such as a lyophilized bulb); the first receiving cavity 101 pre-stores the first reagent (such as a nucleic acid preservation solution). The separator 2 separates the first receiving cavity 101 and the second receiving cavity 102 to prevent the first reagent in the first receiving cavity 101 from flowing into the second receiving cavity 102 in advance and reacting with the second reagent 6 prematurely. When using this testing consumable, the operator first opens the sample cap assembly 4 and places the sampling swab into the first receiving cavity 101. Then, the sample cap assembly 4 is installed above the receiving tube 1. After the sample cap assembly 4 is installed, a closed space is formed inside the receiving tube 1. The operator then applies downward pressure to the piercing rod assembly 3 through the sample cap assembly 4. Under the action of the downward pressure, the piercing rod assembly 3 moves downward until it pierces the separator 2. The first reagent containing nucleic acid flows into the second receiving cavity 102 and mixes with the second reagent 6. Finally, the operator places the above testing consumable into the nucleic acid detection mechanism of the testing device for nucleic acid testing.

[0022] The detection consumable structure in this embodiment is simple. The receiving tube 1 has a first receiving cavity 101 and a second receiving cavity 102 that respectively contain the first reagent and the second reagent 6. A separator 2 is provided to separate the first receiving cavity 101 and the second receiving cavity 102. When using the detection consumable, the piercing rod assembly 3 moves downward and pierces the separator 2, so that the first reagent in the first receiving cavity 101 flows into the second receiving cavity 102 and mixes with the second reagent 6. The above arrangement avoids the need to produce reagent tubes to contain the first reagent and the second reagent 6 separately, reduces the number of parts of the detection consumable, and eliminates the need to assemble the two sets of reagent tubes containing the first reagent and the second reagent 6 together, saving time in the overall nucleic acid detection process and improving the efficiency of nucleic acid detection.

[0023] In one embodiment of this application, the receiving tube 1 includes: The first receiving tube 103 has a first receiving cavity 101 formed inside the first receiving tube 103; The second receiving tube 104 is located at the bottom of the first receiving tube 103 and forms a second receiving cavity 102. The second receiving tube 104 and the first receiving tube 103 are integrally injection molded.

[0024] Specifically, the second receiving tube 104 is located at the bottom of the first receiving tube 103, which facilitates the flow of the first reagent into the second receiving cavity 102. The separator 2 is located at the bottom of the first receiving cavity 101. The second receiving tube 104 and the first receiving tube 103 are integrally injection molded, that is, the entire receiving tube 1 is produced as a single unit, which greatly simplifies the production process of the receiving tube 1, shortens the production cycle of the receiving tube 1, and helps to reduce the production cost of testing consumables.

[0025] Furthermore, in this embodiment, the separator 2 can be a separator membrane. After the container tube 1 is manufactured, the manufacturing personnel preload the second reagent 6 into the second container cavity 102, and then install the separator 2 on the top of the second container cavity 102 by welding or pre-embedding to achieve sealing of the second container cavity 102.

[0026] In one embodiment of this application, the first receiving cavity 101 includes a first cavity 105 and a second cavity 106. The second cavity 106 is located inside the first cavity 105 and communicates with the first cavity 105. The separator 2 is disposed between the second cavity 106 and the second receiving cavity 102. The receiving tube 1 also includes a plurality of support portions 107 extending upward from the top of the second cavity 106 and used for inserting the piercing rod assembly 3. The plurality of support portions 107 are distributed circumferentially along the second cavity 106 and together form a sliding space 108 for a portion of the piercing rod assembly 3 to extend into.

[0027] Specifically, the second cavity 106 is located at the center of the first cavity 105, the lowest point of the second cavity 106 is lower than the lowest point of the first cavity 105, and the inner diameter of the second cavity 106 is smaller than the inner diameter of the first cavity 105. In this embodiment, the support 107 is columnar and preferably four (or three, five, six or other numbers). The first reagent in the first cavity 105 can flow into the second cavity 106 through the gap between two adjacent support 107s. The sliding space 108 is connected to the second cavity 106 and the two have the same inner diameter. When the sample cap assembly 4 does not apply downward pressure to the piercing rod assembly 3 (at this time, the piercing rod assembly 3 has not yet moved downward), in the sliding space 108 into which part of the piercing rod assembly 3 extends, multiple support parts 107 can work together to hold the piercing rod assembly 3 so that the piercing rod assembly 3 can be stably kept vertical; during the downward movement of the piercing rod assembly 3, multiple support parts 107 can work together to guide the piercing rod assembly 3, preventing the piercing rod assembly 3 from shifting and failing to pierce the separator 2 smoothly, thus ensuring the reliability of the testing consumables.

[0028] In one embodiment of this application, the second receiving tube portion 104 protrudes downward from the bottom surface of the first receiving tube portion 103, the inner diameter of the second receiving cavity 102 gradually decreases from top to bottom, and the testing consumables also include a protective cover 5 disposed on the outside of the second receiving tube portion 104 for protecting the second receiving tube portion 104.

[0029] Specifically, the inner diameter of the first receiving cavity 101 is smaller than the inner diameter of the second cavity 106. The receiving tube 1 also includes an annular connecting portion disposed on the first receiving tube portion 103 and located outside the second receiving tube 1. The protective cover 5 has a third receiving cavity 501 formed for receiving the second receiving tube portion 104. The opening of the third receiving cavity 501 faces upward, and the outer peripheral wall of the protective cover 5 can fit tightly against the inner peripheral wall of the annular connecting portion. When the operator places the protective cover 5 over the outside of the second receiving tube portion 104 from bottom to top and moves it upward, part of the protective cover 5 extends into the interior of the first receiving tube portion 103. The friction between the outer peripheral wall of the protective cover 5 and the inner peripheral wall of the annular connecting portion allows the two to be stably connected together, preventing the protective cover 5 from easily separating from the receiving tube 1, thus providing good protection for the second receiving tube portion 104.

[0030] In one embodiment of this application, the sliding space 108 and the second cavity 106 together form a piston space, and an annular limiting end face is formed at the bottom of the piston space. The separator 2 is disposed above the annular limiting end face, and the piercing rod assembly 3 includes: Piston 301 is vertically movable in piston space. The outer peripheral wall of piston 301 is in close contact with the inner side wall of piston space. When sample cap assembly 4 does not apply downward pressure to piercing rod assembly 3, piston 301 is located at the top of piston space. A piercing rod 302 is inserted into the piston 301 and has a piercing tip 303, with part of the piercing tip 303 protruding downward from the bottom wall of the piston 301.

[0031] Specifically, in this embodiment, the up and down direction is... Figure 1In the vertical direction, the sample cap assembly 4 can apply downward pressure to the piercing rod 302. After receiving the downward pressure, the piercing rod 302 moves downward with the piston 301. The piston 301 moves downward in the piston space until the bottom wall of the piston 301 and the annular limiting end face abut. When the bottom wall of the piston 301 and the annular limiting end face abut, the piercing tip 303 has pierced the separator 2. Further, after the sampling swab is placed in the first cavity 105 and the sample cap assembly 4 is placed on the receiving tube 1, part of the first reagent containing nucleic acid has passed through the two adjacent branches. The gap between the support portions 107 enters and fills the second cavity 106. After the piercing tip 303 pierces the separator 2, the piston 301 squeezes the first reagent containing nucleic acid in the second cavity 106 into the second receiving cavity 102. Since the height of the piston space is determined, that is, the movement stroke of the piston 301 is determined, a quantitative amount of the first reagent containing nucleic acid is squeezed into the second receiving cavity 102. The above arrangement allows the quantitative amount of the first reagent containing nucleic acid to mix with the second reagent 6, which is beneficial to improving the accuracy of nucleic acid detection.

[0032] In one embodiment of this application, the piercing rod 302 includes a piercing rod body portion 304 and a baffle portion 305. The piercing tip 303 is formed on the piercing rod body portion 304. The baffle portion 305 is disposed on the peripheral wall of the piercing rod body portion 304 and slides in contact with the cavity wall of the first receiving cavity 101. An avoidance notch is also formed on the baffle portion 305.

[0033] Specifically, the baffle portion 305 is plate-shaped and extends radially outward from the outer peripheral wall of the piercing rod body portion 304. The outer side wall of the baffle portion 305 can slide in contact with the peripheral wall of the first cavity 105. During the vertical movement of the piercing rod 302, the baffle portion 305 acts as a guide, ensuring that the movement direction of the piercing rod body portion 304 is axial, preventing the piercing tip 303 from deviating from the separator 2. In addition, the clearance notch formed on the baffle portion 305 allows air to circulate on both the upper and lower sides of the baffle portion 305, enabling the piercing rod 302 to move up and down more smoothly.

[0034] In one embodiment of this application, the sample addition cap assembly 4 includes: The sample filling cover 401 is detachably placed on the top of the receiving tube 1 and has a vertical through mounting hole 402. The pressure post 403 is vertically movable and inserted into the mounting hole 402 and can abut against the piercing rod assembly 3.

[0035] Specifically, the sample filling cap 401 includes a plug body 406, a connecting cylinder portion 407, and a connecting ring portion 408. A mounting hole 402 is formed on the plug body 406, which is used to extend into the first receiving cavity 101. The connecting cylinder portion 407 is sleeved on the outside of the first receiving tube portion 103 and forms a threaded connection with the first receiving tube portion 103. The radially inner side of the connecting ring portion 408 is connected to the plug body 406, and the radially outer side of the connecting ring portion 408 is connected to the connecting cylinder portion 407. The operator can install the sample filling cap 401 onto the receiving tube 1 or remove the sample filling cap 401 from the receiving tube 1 by turning the connecting cylinder portion 407. When installing or removing the sample filling cap 401, the pressure post 403 is inserted into the sample filling cap 401. Furthermore, when the sample cap 401 is installed on the receiving tube 1, the bottom wall of the pressure column 403 and the top wall of the piercing rod 302 abut against each other, applying a downward force to the pressure column 403, which causes the pressure column 403 to move downward in the mounting hole 402. During the downward movement of the pressure column 403, a downward pressure is applied to the piercing rod assembly 3, thereby causing the piercing rod assembly 3 to move downward and pierce the separator 2.

[0036] In one embodiment of this application, a positioning end face 404 for installing and positioning the pressure post 403 is formed on the sample filling cover 401.

[0037] Specifically, the pressure post 403 includes a columnar portion 409 and an inverted frustum portion 410. The columnar portion 409 is disposed above the inverted frustum portion 410 and can extend into the mounting hole 402. The sample cover 401 has a recessed cavity formed from the bottom surface upward. The top surface of the cavity is the positioning end face 404 and can form a positioning fit with the upper end face of the inverted frustum portion 410. When installing the pressure column 403 onto the sample cap 401, first insert the columnar part 409 into the mounting hole 402 and push the columnar part 409 upward through the inverted frustum part 410 until the upper end face of the inverted frustum part 410 fits against the top surface of the cavity. At this time, the sample cap 401 and the pressure column 403 are installed and fitted. The above setting can prevent the sample cap assembly 4 from applying downward pressure to the piercing rod assembly 3 in advance when the sample cap assembly 4 is installed on the receiving tube 1, which would prevent the piercing rod assembly 3 from moving downward from its initial position (i.e., prevent the piston 301 from not being at the top of the piston space at the beginning). This further ensures the accuracy of the quantitative flow of the first reagent containing nucleic acid into the second receiving cavity 102.

[0038] In one embodiment of this application, the sample cap assembly 4 further includes a sealing ring 405 disposed on the wall of the mounting hole 402 and used to seal the gap between the wall of the mounting hole 402 and the pressure post 403.

[0039] Specifically, in this embodiment, the sealing ring 405 is integrally formed with the sample cap 401 and there are multiple sealing rings 405. The multiple sealing rings 405 are distributed at intervals along the axial direction of the mounting hole 402. The above arrangement ensures that when the pressure column 403 moves up and down relative to the pressure cap, the interior of the detection consumable is always sealed, which is beneficial to further improve the accuracy of quantitative flow of the first reagent containing nucleic acid into the second receiving cavity 102.

[0040] Another embodiment of this application provides a testing device that includes the testing consumables described in the above embodiments.

[0041] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0044] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A testing consumable, characterized in that, The testing consumables include: The container tube (1) has a first receiving cavity (101) and a second receiving cavity (102) formed inside the container tube (1) for receiving the first reagent and the second reagent (6) respectively. The second receiving cavity (102) is located at the bottom of the first receiving cavity (101) and can communicate with the first receiving cavity (101). A separator (2) is disposed on top of the first receiving cavity (101) and is used to separate the first receiving cavity (101) and the second receiving cavity (102); The piercing rod assembly (3) is vertically movable and inserted into the first receiving cavity (101) and is capable of piercing the separator (2) downwards. The sample cap assembly (4) is detachably disposed on top of the receiving tube (1) and is capable of applying downward pressure to the piercing rod assembly (3).

2. The testing consumables according to claim 1, characterized in that, The receiving tube (1) includes: The first receiving tube (103) has the first receiving cavity (101) formed inside the first receiving tube (103). The second receiving tube (104) is located at the bottom of the first receiving tube (103) and forms the second receiving cavity (102). The second receiving tube (104) and the first receiving tube (103) are integrally injection molded.

3. The testing consumables according to claim 2, characterized in that, The second receiving tube (104) protrudes downward from the bottom surface of the first receiving tube (103), and the inner diameter of the second receiving cavity (102) gradually decreases from top to bottom. The detection consumable also includes a protective cover (5) disposed on the outside of the second receiving tube (104) and used to protect the second receiving tube (104).

4. The testing consumables according to claim 2, characterized in that, The first receiving cavity (101) includes a first cavity (105) and a second cavity (106). The second cavity (106) is located inside the first cavity (105) and communicates with the first cavity (105). The separator (2) is disposed between the second cavity (106) and the second receiving cavity (102). The receiving tube (1) also includes a plurality of support portions (107) extending upward from the top of the second cavity (106) for inserting the piercing rod assembly (3). The plurality of support portions (107) are distributed circumferentially along the second cavity (106) and together form a sliding space (108) for a portion of the piercing rod assembly (3) to extend into.

5. The testing consumables according to claim 4, characterized in that, The sliding space (108) and the second cavity (106) together form a piston space. An annular limiting end face is formed at the bottom of the piston space. The separator (2) is disposed above the annular limiting end face. The piercing rod assembly (3) includes: The piston (301) is vertically movable in the piston space. The outer peripheral wall of the piston (301) is in close contact with the inner sidewall of the piston space. When the sample cap assembly (4) does not apply the downward pressure to the piercing rod assembly (3), the piston (301) is located at the top of the piston space. A piercing rod (302) is inserted into the piston (301) and has a piercing tip (303), part of which protrudes downward from the bottom wall of the piston (301).

6. The testing consumable according to claim 5, characterized in that, The piercing rod (302) includes a piercing rod body (304) and a baffle (305). The piercing tip (303) is formed on the piercing rod body (304). The baffle (305) is disposed on the peripheral wall of the piercing rod body (304) and slides in contact with the cavity wall of the first receiving cavity (101). An avoidance notch is also formed on the baffle (305).

7. The testing consumables according to claim 1, characterized in that, The sample dispensing cap assembly (4) includes: The sample filling cap (401) is detachably placed on the top of the receiving tube (1) and has a vertical through mounting hole (402). The pressure post (403) is vertically movable and inserted into the mounting hole (402) and can abut against the piercing rod assembly (3).

8. The testing consumables according to claim 7, characterized in that, The sample filling cover (401) has a positioning end face (404) for installing and positioning the pressure column (403).

9. The testing consumables according to claim 7, characterized in that, The sample cap assembly (4) further includes a sealing ring (405) disposed on the wall of the mounting hole (402) and used to seal the gap between the wall of the mounting hole (402) and the pressure post (403).

10. A detection device, characterized in that, The testing device includes testing consumables according to any one of claims 1-9.

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