Joint test tube and liquid working portion

Abstract

The application relates to a combined test tube and liquid-phase working part, which comprises a combined test tube, the combined test tube is a variable-diameter cup, the cup comprises a large-diameter section, a variable-diameter section and a small-diameter section which gradually decrease from the cup opening to the cup bottom, at least one side outer wall of the large-diameter section is provided with a guide convex rib, the setting direction of the guide convex rib is suitable for keeping consistent with the direction of inserting the combined test tube into a detection station, the inside of the guide convex rib is hollow, and a giving-way groove is arranged at the top of the guide convex rib. The hollow guide convex rib is arranged, and the giving-way groove is arranged at the top of the guide convex rib; when a sampler is inserted into the combined test tube, the gap among the giving-way groove, the inside of the hollow guide convex rib, the sampler and the combined test tube can be used as a liquid channel, and a chromogenic agent can be added into the combined test tube; the design is more ingenious; when a detection station suitable for the combined test tube is used, the miniaturization design of the whole detection station is facilitated, so that a small-volume liquid-phase detection station can be realized, and the detection station has the advantages of low cost and convenient batch production.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a combined test tube and a liquid phase working part. Background Technology

[0002] For existing disease detection methods that rely on extracting secretions, although there are many types of health testing instruments, and these instruments are usually quite large, the transportation environment to the testing station or center after sampling is highly variable and uncertain. The specimens and standard substances, along with the sample and sampling materials, can undergo changes in state and quality due to environmental factors such as temperature, storage time, and transportation, which can affect the test results.

[0003] Therefore, to achieve rapid testing after sampling, the design of such testing equipment tends towards miniaturization, even to the point where users can easily take the equipment home for self-testing. However, these miniaturized testing devices, using conventional cylindrical reagent tubes, suffer from poor compatibility. For example, when incorporating conventional reagent tubes into a miniaturized testing device, the sampler must first be inserted into the device, the sample reacts with the solution in the reagent tube, and then the colorimetric reagent is injected. However, the sampler occupies space in the conventional reagent tube, leaving little room for further injection of the colorimetric reagent. Therefore, a specially designed reagent tube is needed that balances good compatibility with the small testing device with the sampler's insertion into the tube without interfering with the injection of the colorimetric reagent. Summary of the Invention

[0004] In view of this, this application proposes a combined test tube, comprising a combined test tube; the combined test tube is a variable diameter cup, comprising a large diameter section, a variable diameter section and a small diameter section that gradually decrease in diameter from the cup mouth to the cup bottom; at least one side of the outer wall of the large diameter section is provided with a guide ridge, the direction of the guide ridge being adapted to be consistent with the direction in which the combined test tube is inserted into the testing station; the guide ridge is hollow inside, and a clearance groove is provided at the top of the guide ridge.

[0005] In one possible implementation, the longitudinal opening length of the clearance groove in the joint test tube is less than or equal to half the length of the guide ridge.

[0006] In one possible implementation, the guide ridges are symmetrically arranged on both sides of the large-diameter end.

[0007] In one possible implementation, the bottom of the guide ridge has a chamfer with the outer wall of the combined test tube.

[0008] In one possible implementation, the bottom of the small-diameter section extends downward to form a raised portion; the radial width of the raised portion is smaller than the radial width of the small-diameter section, and the outer periphery of the raised portion is provided with a first protruding ridge, which is arranged in the middle and bottom of the raised portion, and the radial length of the first protruding ridge is equal to the radial length of the small-diameter section; a first hole is opened from the bottom center of the raised portion to the top, and the first hole is a blind hole that is not connected to the inside of the joint test tube.

[0009] On the other hand, this application also proposes a liquid phase working unit, including the combined test tube and the liquid phase working unit as described in any of the above implementations; the liquid phase working unit has a first cavity; the combined test tube is installed in the first cavity, and the first cavity is adapted to the combined test tube; at least one side of the liquid phase working unit has a reading window, corresponding to the position of the combined test tube; the combined test tube is made of a visible material.

[0010] In one possible implementation, the system further includes a base, a main control unit, and a micro switch; the base is hollow inside, detachably connected to the liquid phase working part, and located at the bottom of the liquid phase working part; the main control unit is installed inside the base; the micro switch is located at the top of the liquid phase working part and is electrically connected to the main control unit.

[0011] In one possible implementation, the liquid phase working part is inserted and fixed to the base; wherein, the top of the base is provided with a mounting hole, the bottom of the liquid phase working part is provided with a matching mounting cylinder, and the outline of the mounting cylinder is consistent with the structure of the first cavity.

[0012] In one possible implementation, the base has a double-layer structure that is narrower at the top and wider at the bottom, including a bottom mounting box and a middle mounting box; the bottom mounting box has a battery mounting position, the middle mounting box houses the main control unit, and the base is internally connected to the liquid phase working part; the top of the bottom mounting box is open, the bottom of the middle mounting box is provided with a snap-fit ​​component that snaps and fixes to the side wall of the bottom mounting box, and the mounting hole is opened on the top of the middle mounting box.

[0013] In one possible implementation, an alarm module is also provided within the base; the alarm module is electrically connected to the main control unit.

[0014] The beneficial effects of this application are as follows: By setting the combined test tube as a variable-diameter cup, where the large-diameter section is adapted to fit the sampler inserted into the cup, and the small-diameter section can be consistent with the size of a conventional test tube, and the two are connected into a whole through the variable-diameter section, the versatility and adaptability of the combined test tube of this application are increased. Furthermore, a guide ridge is provided on the outer wall of the large-diameter section, which facilitates the placement of the combined test tube into the testing station and provides a certain degree of positioning and stabilization. The hollow guide ridge, with a clearance groove at its top, allows for the addition of colorimetric reagent to the combined test tube even when the sampler is inserted, thanks to the clearance groove, the interior of the hollow guide ridge, and the gap between the sampler and the combined test tube serving as a liquid channel. This design is ingenious. When designing a testing station adapted to this combined test tube, it also facilitates the miniaturization of the overall testing station, enabling the realization of a small-volume liquid chromatography testing station with advantages such as lower cost and ease of mass production.

[0015] Other features and aspects of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0016] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this application together with the specification and serve to explain the principles of this application.

[0017] Figure 1 This shows a front view of the liquid phase working section according to an embodiment of the present application;

[0018] Figure 2 A cross-sectional view of the liquid phase working section according to an embodiment of this application is shown;

[0019] Figure 3 A side view of the liquid phase working section according to an embodiment of this application is shown;

[0020] Figure 4 An assembly diagram of the liquid phase working section and sampler according to an embodiment of this application is shown;

[0021] Figure 5 This is a cross-sectional view showing an assembly of the liquid phase working unit and the sampler according to an embodiment of this application;

[0022] Figure 6 A partial cross-sectional view of a combined test tube located within the liquid phase working section according to an embodiment of this application is shown;

[0023] Figure 7 A side view of a combined test tube according to an embodiment of this application is shown;

[0024] Figure 8A cross-sectional view of a combined test tube according to an embodiment of this application is shown. Detailed Implementation

[0025] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0026] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application or to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0027] Furthermore, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0028] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0029] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0030] Figure 1 This shows a front view of the liquid phase working section according to an embodiment of the present application; Figure 2 A cross-sectional view of the liquid phase working section according to an embodiment of this application is shown; Figure 3 A side view of the liquid phase working section according to an embodiment of this application is shown; Figure 4 An assembly diagram of the liquid phase working section and sampler according to an embodiment of this application is shown; Figure 5 This is a cross-sectional view showing an assembly of the liquid phase working unit and the sampler according to an embodiment of this application; Figure 6 A partial cross-sectional view of a combined test tube located within the liquid phase working section according to an embodiment of this application is shown; Figure 7 A side view of a combined test tube according to an embodiment of this application is shown; Figure 8 A cross-sectional view of a combined test tube according to an embodiment of this application is shown.

[0031] like Figures 1-8 As shown, a combined test tube includes a combined test tube 20, which is a variable diameter cup, including a large diameter section 21, a variable diameter section 22, and a small diameter section 23 that gradually decrease in diameter from the cup mouth to the cup bottom. At least one side of the outer wall of the large diameter section 21 is provided with a guide ridge 24. The direction of the guide ridge 24 is adapted to be consistent with the direction of insertion of the combined test tube 20 into the test station. The guide ridge 24 is hollow inside, and a relief groove 25 is opened on the top of the guide ridge 24.

[0032] In this embodiment, the combined test tube 20 is configured as a variable-diameter cup, wherein the large-diameter section 21 is adapted to fit the sampler 40 extending into the cup, and the small-diameter section 23 can be consistent with the size of a conventional test tube. The two are then connected into a whole by the variable-diameter section 22, thereby increasing the versatility and adaptability of the combined test tube of this application. Furthermore, a guide ridge 24 is provided on the outer wall of the large-diameter section 21, which facilitates the placement of the combined test tube into the testing station and provides a certain degree of positioning and stabilization. The design incorporates a hollow guide ridge 24 with a clearance groove 25 at its top. Compared to conventional test reagent tubes, this design allows the colorimetric reagent to be added to the combined test tube 20 through the clearance groove 25, the interior of the hollow guide ridge 24, and the gap between the sampler 40 and the combined test tube 20, even when the sampler 40 is inserted into the combined test tube 20. This ingenious design also facilitates the miniaturization of the test station by designing a compatible testing station, enabling the creation of a small-volume liquid chromatography testing station with advantages such as lower cost and ease of mass production.

[0033] In one specific embodiment, the opening length of the clearance groove 25 in the longitudinal direction of the joint test tube 20 is less than or equal to half the length of the guide ridge 24.

[0034] In one specific embodiment, the relief groove 25 is strip-shaped and longitudinally arranged on the guide ridge 24. The front end of the color reagent injection part 30 is connected to the color reagent addition conduit 34. The color reagent addition conduit 34 enters the combined test tube 20 through the relief groove 25, and finally flows into the reagent after the sample and standard reagent react through the gap between the outer wall of the sampler 40 and the inner wall of the combined test tube 20, and begins the color reaction.

[0035] In one specific embodiment, guide ridges 24 are symmetrically arranged on both sides of the large-diameter end.

[0036] In this embodiment, the symmetrically arranged guide ridges 24 enable the joint test tube 20 to be better positioned in the testing station, increase the contact area between the joint test tube 20 and the testing station, make the connection between the two more stable, and facilitate transportation after assembly.

[0037] In one specific embodiment, the bottom of the guide ridge 24 has a chamfer with the outer wall of the combined test tube 20.

[0038] In one specific embodiment, the bottom of the small diameter section 23 extends downward to form a raised portion 26. The radial width of the raised portion 26 is smaller than the radial width of the small diameter section 23. The outer periphery of the raised portion 26 is provided with a first protruding ridge 261, which is arranged around the middle and bottom of the raised portion 26. The radial length of the first protruding ridge 261 is equal to the radial length of the small diameter section 23. A first hole is opened from the bottom center of the raised portion 26 to the top. The first hole is a blind hole 262 and is not connected to the inside of the joint test tube 20.

[0039] On the other hand, this application also proposes a liquid phase working unit, including a combined test tube and a liquid phase working unit 10 in any of the above implementations. A first cavity is provided on the liquid phase working unit 10, and the combined test tube 20 is installed in the first cavity. The first cavity is adapted to the combined test tube 20. At least one side of the liquid phase working unit 10 is provided with a reading window 11, which corresponds to the position of the combined test tube 20. The combined test tube 20 is made of a visible material.

[0040] In one specific embodiment, it also includes a base 70, a main control unit 72 and a micro switch 73. The base 70 is hollow inside and is detachably connected to the liquid phase working part 10 and is located at the bottom of the liquid phase working part 10. The main control unit 72 is installed inside the base 70, and the micro switch 73 is located at the top of the liquid phase working part 10 and is electrically connected to the main control unit 72.

[0041] In one specific embodiment, the liquid phase working part 10 is inserted and fixed to the base 70. The base 70 has a mounting hole at the top and a matching mounting cylinder at the bottom of the liquid phase working part 10. The outline of the mounting cylinder is consistent with the structure of the first cavity.

[0042] In one specific embodiment, the base 70 has a double-layer structure that is narrower at the top and wider at the bottom, including a bottom mounting box and a middle mounting box. The bottom mounting box has a battery mounting position 71, and the middle mounting box is equipped with a main control unit 72. The base 70 is connected to the liquid phase working part 10. The top of the bottom mounting box is open, and the bottom of the middle mounting box is provided with a snap-fit ​​component that snaps and fixes to the side wall of the bottom mounting box. The mounting hole is opened at the top of the middle mounting box.

[0043] In one specific embodiment, the liquid phase working part 10 is generally rectangular in shape, with its length direction perpendicular to the base 70. The liquid phase working part 10 has reading windows on opposite sides, and a mounting groove is provided on the top of the liquid phase working part 10. The mounting groove is suitable for matching the upper end baffle of the syringe of the sampler 40. The micro switch 73 is located on one side of the top, and the first cavity is opened at the bottom of the mounting groove.

[0044] It should also be noted that the "top" referred to in this article is... Figure 1 The middle is facing upwards, and the bottom is... Figure 1 Center downward direction Figure 1 The left and right directions refer to one side or both sides of the liquid phase working section.

[0045] In one specific embodiment, an alarm module 75 is also provided in the base 70, and the alarm module 75 is electrically connected to the main control unit 72.

[0046] In one specific embodiment, the liquid phase working section 10, the colorimetric reagent injection section 30, and the combined test tube 20 are provided. The liquid phase working section 10 has a first cavity and a second cavity that are adjacent to each other. The combined test tube 20 is installed in the first cavity. The colorimetric reagent injection section 30 is disposed in the second cavity. The colorimetric reagent injection section 30 includes a power unit 31, a syringe 33, a pusher 32, and a colorimetric reagent addition conduit 34. The power unit 31 is connected to the pusher 32. The outer wall of the pusher 32 is provided with an external thread. The second cavity is provided with an internal thread with a preset stroke at the corresponding position of the pusher 32, and it matches the external thread of the pusher 32. The syringe barrel of the syringe 33 is fixed to the second cavity. One end of the colorimetric reagent addition conduit 34 is connected to the injection end of the syringe 33, and the other end of the colorimetric reagent addition conduit 34 is connected to the combined test tube 20. The power unit 31 can drive the pusher 32 to add the liquid in the syringe 33 into the combined test tube 20.

[0047] In this embodiment, by setting a combined test tube 20 in the first cavity of the liquid phase working section 10 and setting a second cavity next to the first cavity, the colorimetric reagent injection section 30 is placed in the second cavity. The colorimetric reagent injection section 30 can be injected into the combined test tube 20 through the colorimetric reagent addition conduit 34. This makes the detection device easy to design in a small size while ensuring a relatively simple overall structure. It takes into account the advantages of small size and high integration of the detection device, so as to realize efficient on-site detection, reduce the steps of sending samples to the testing station, and avoid adverse phenomena such as phase change and quality change during transportation. This liquid phase detection device has the advantages of convenient and simple operation.

[0048] Furthermore, the automation level of the liquid chromatography working unit 10 is further improved by using the power unit 31 to drive the spiral pusher 32 to inject the colorimetric reagent into the combined test tube 20. It should also be noted that because the liquid chromatography detection device of this application is for medical use, especially suitable for detecting diseases by extracting secretions, the device has high requirements for hygiene. Therefore, the liquid chromatography detection device of this application is typically made of simple materials, and the entire device can be used only once. The spiral pusher 32 driven by the power unit 31 provides a gentler push that is less likely to damage internal structural components, thus ensuring high reliability of the spiral-push colorimetric reagent injection unit 30. This minimizes the need to manually push the colorimetric reagent injection unit 30 after damage due to insufficient durability of disposable materials.

[0049] Furthermore, the components within the liquid phase working section of this application can be directly manufactured using 3D printing or plastic materials. Due to their disposable nature, they offer the advantage of low cost while maintaining good hygiene. Because of the simple structure of its detection device, it can be installed using a screwless design, requiring only snap-fit, plug-in, and adhesive connections for assembly. After testing, the results in the combined test tube 20 are read to complete the test, allowing for self-testing at home. It is simple and convenient to use, eliminating the need for sampling and transportation to a testing station, thus providing convenience for testing personnel.

[0050] In one specific embodiment, a heating element 50 is also included, which is disposed in the first cavity and is in contact with the combined test tube 20.

[0051] In one specific embodiment, a heat-conducting part 60 is also included. The heat-conducting part 60 is made of metal and covers at least the cup wall of the combined test tube 20.

[0052] In one specific embodiment, the heat-conducting part 60 has a cylindrical structure and is sleeved on the outside of the combined test tube 20. The heating part 50 includes a thin-film heating plate, which is attached to the outer wall of the heat-conducting part 60. At least one side of the liquid phase working part 10 has a reading window 11. The combined test tube 20 is made of a visible material. The heating part 50 has a slot cut out at the position where the reading window 11 is opened in the liquid phase working part 10. The heat-conducting part 60 has a slot cut out at the position where the reading window 11 is opened in the liquid phase working part 10.

[0053] In one specific embodiment, it also includes a base 70, a temperature sensor 74, and a heating element 50. The base 70 is hollow inside and has a battery mounting position 71 and a main control unit 72. The main control unit 72 has an alarm module 75. The temperature sensor 74 is located at the bottom of the combined test tube 20 and is electrically connected to the main control unit 72. The first cavity is located in the middle of the liquid phase working section 10. The colorimetric reagent injection section 30 is installed in the liquid phase working section 10 and is electrically connected to the main control unit 72. The colorimetric reagent injection section 30 is located on one side of the first cavity. A micro switch 73 is provided on the top of the other side of the liquid phase working section 10, which is suitable for being adapted to the sampler 40. The heating element 50 is located in the first cavity, below the combined test tube 20, and is electrically connected to the main control unit 72.

[0054] In one specific embodiment, the main control unit 72 is located inside the base 70, and is situated at the bottom of the liquid phase working part 10. The micro switch 73 is located at the top of one side of the liquid phase working part 10. A wire groove 12 is provided on the side wall of the liquid phase working part 10 where the micro switch 73 is located. The wire of the micro switch 73 passes through the wire groove 12 and is electrically connected to the main control unit 72 inside the base 70.

[0055] In this embodiment, the liquid chromatography detection unit of this application inserts the sampling end of the sampler 40 into the combined test tube 20. After the standard substance reaction time has elapsed, the colorimetric reagent in the colorimetric reagent injection unit 30 is injected into the combined test tube 20 through a conduit. The colorimetric reaction result is observed and compared with the sample substance to detect various vital signs. Due to its simple overall structure, it is easy to miniaturize and can achieve on-site testing without adverse phenomena such as phase changes or quality changes, and has the advantages of convenient and simple operation.

[0056] It should be noted that, at the time of manufacture, the liquid chromatography detection station of this application is placed into the first chamber of the liquid chromatography working section 10 after the combined test tube 20 is filled with standard reagents (which can be replaced according to different detection indicators). The syringe 33 of the colorimetric reagent injection section 30 is also filled with the corresponding colorimetric reagent. After the filling of the two reagents is completed, the liquid chromatography detection device with the spiral pusher 32 is assembled. Before product packaging, corresponding sealing plugs need to be installed in the first chamber of the liquid chromatography working section 10 and at the position of the combined test tube 20 to ensure that the standard reagents do not flow out of the liquid chromatography working section 10. Before the detection begins, the sealing plugs are removed, and the sampler 40, after sampling, is inserted into the combined test tube 20 for subsequent detection steps.

[0057] In one specific embodiment, the sampling process of the sampler 40 is as follows: hold the ends of the shell 41 and the twist 47, ensuring that the movement between the structures is not hindered, and align it with the natural cavity organ, which has the form of cave, tubular, pore, crevice and gap. Press and twist the twist 47 to make the twist 47 spiral forward along the slide 43, and carry the sampling cap 46 of flocked material out of the injection end of the shell 41. The sampling cap 46 of the syringe of the shell 41 slowly extends out to sweep the wall of the organ cave, tubular, pore, crevice and gap, forming a painless and comfortable sampling process to obtain the test substance.

[0058] More specifically, the specific detection process of the liquid phase working section of this application is as follows: The sampler 40 is inserted into the combined test tube 20 inside the liquid phase working section 10, causing the upper baffle of the housing 41 to touch the intelligent micro switch 73, forming an intelligent detection of the operation process. This triggers the main control unit to start operation, the alarm module 75 sounds an alarm, and the main control unit sends a signal to the heating section 50 to begin heating. Once the temperature sensor 74 detects that the rated temperature has been reached (the heating time is generally 10 minutes, and the rated temperature is usually the normal human body temperature, such as 35°C-40°C), the alarm module 75 sounds an alarm again, and the alarm sound initiates constant temperature control. The detection process continues... During the process, the standard reagent and the sampled substance have a standard reaction time. After the standard reaction time is completed, an alarm sounds again, and the colorimetric reagent is added. The main control unit starts the power unit 31, which rotates at a time. The pusher 32 spirals up, pushing the colorimetric reagent in the syringe 33 into the colorimetric reagent addition tube 34. Then, through the gap between the combined test tube 20 and the sampler 40, the colorimetric reagent enters the combined test tube 20. The color reaction result is interpreted through the observation window, and the detection process is observed and compared with the sample substance. The colorimetric comparison of the standard substance and the test substance, the sample comparison sample detection and interpretation, and the detection of various vital signs are all performed.

[0059] Furthermore, the main control unit 72 mentioned in this application can be directly implemented by those skilled in the art using existing technology, thereby realizing the heating and self-testing of the entire device. After the standard substance reacts and the colorimetric reagent is added, the colorimetric reaction is completed, and various vital signs can be obtained after observation. The specific details will not be elaborated in this article.

[0060] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A combined test tube and liquid phase working section, suitable for placement in a liquid phase workstation, characterized in that, Including joint test tubes; The combined test tube is a variable diameter cup, which includes a large diameter section, a variable diameter section, and a small diameter section that gradually decrease in size from the cup mouth to the cup bottom. At least one side of the outer wall of the large-diameter section is provided with a guide ridge, and the direction of the guide ridge is adapted to be consistent with the direction in which the joint test tube is inserted into the liquid phase workstation. The guide ridge is hollow inside, and a clearance groove is provided on the top of the guide ridge; The liquid phase workstation is provided with a first chamber and a second chamber; The combined test tube is installed in the first cavity, and the first cavity is adapted to the combined test tube; The liquid phase workstation has a reading window on at least one side, corresponding to the position of the combined test tube; The combined test tube is made of a visible material; It also includes a heating part and a heat-conducting part. The heating part is disposed in the first cavity and is in contact with the combined test tube. The heat-conducting part has a cylindrical structure and is sleeved on the outside of the combined test tube. The heating part includes a thin film heating plate, which is attached to the outer wall of the heat-conducting part. It also includes a colorimetric reagent injection unit, which is disposed in the second cavity. The colorimetric reagent injection unit includes a power unit, a syringe, a pusher, and a colorimetric reagent addition conduit. The power unit is connected to the pusher. The outer wall of the pusher is provided with an external thread. The second cavity is provided with an internal thread with a preset stroke at the corresponding position of the pusher, which matches the external thread of the pusher. The syringe barrel is fixed to the second cavity. One end of the colorimetric reagent addition conduit is connected to the injection end of the syringe, and the other end of the colorimetric reagent addition conduit is connected to the combined test tube. The power unit can drive the pusher to add the liquid in the syringe to the combined test tube. Furthermore, even when the sampler is inserted into the combined test tube, it can still use the clearance groove, the interior of the guide ridge, and the gap between the sampler and the combined test tube as liquid channels to add the colorimetric reagent into the combined test tube. The front end of the colorimetric reagent injection part is connected to the colorimetric reagent addition conduit. The colorimetric reagent addition conduit enters the combined test tube through the clearance groove and finally flows into the reagent after the sample and standard reagent have reacted through the gap between the outer wall of the sampler and the inner wall of the combined test tube.

2. The combined test tube and liquid phase working section according to claim 1, characterized in that, The length of the clearance groove in the longitudinal direction of the joint test tube is less than or equal to half the length of the guide ridge.

3. The combined test tube and liquid phase working section according to claim 1, characterized in that, The guide ridges are symmetrically arranged on both sides of the large-diameter section.

4. The combined test tube and liquid phase working section according to claim 1, characterized in that, The bottom of the guide ridge has a chamfer with the outer wall of the combined test tube.

5. The combined test tube and liquid phase working section according to claim 1, characterized in that, The bottom of the narrow section extends downwards with a raised section; The radial width of the heightening portion is smaller than the radial width of the small diameter segment, and the outer periphery of the heightening portion is provided with a first protruding ridge. The first protruding ridge is arranged in the middle and bottom of the heightening portion, and the radial length of the first protruding ridge is equal to the radial length of the small diameter segment. The bottom center of the heightening section has a first hole extending upwards. This first hole is a blind hole and is not connected to the inside of the joint test tube.

6. The combined test tube and liquid phase working section according to claim 5, characterized in that, It also includes a base, a main control unit, and microswitches; The base is hollow inside, and the base is detachably connected to the liquid phase workstation and is located at the bottom of the liquid phase workstation; The main control unit is installed inside the base; The micro switch is located on the top of the liquid phase working part and is electrically connected to the main control unit.

7. The combined test tube and liquid phase working section according to claim 6, characterized in that, The liquid phase workstation is plugged into and fixed to the base; The base has a mounting hole at its top, and the liquid phase workstation has a matching mounting cylinder at its bottom, with the outline of the mounting cylinder being consistent with the structure of the first cavity.

8. The combined test tube and liquid phase working section according to claim 7, characterized in that, The base has a double-layer structure that is narrower at the top and wider at the bottom, including a bottom mounting box and a middle mounting box; The bottom mounting box has a battery mounting position, the middle mounting box is equipped with a main control unit, and the base is connected to the liquid phase workstation. The bottom mounting box has an open top, and the bottom of the middle mounting box is provided with a snap-fit ​​component that snaps into and fixes the bottom mounting box to the side wall. The mounting hole is opened at the top of the middle mounting box.

9. The combined test tube and liquid phase working section according to claim 8, characterized in that, An alarm module is also installed inside the base; The alarm module is electrically connected to the main control unit.

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