Immunoassay analyzer

Abstract

The utility model relates to the field of in-vitro diagnostic equipment, and provides an immunity analyzer which comprises a reaction bin unit, a pipetting unit, a magnetic separation cleaning unit, a substrate separate injection unit, a detection unit and a controller, the reaction bin unit comprises a first heating assembly; the pipetting unit is used for transferring samples and reagents; the magnetic separation cleaning unit is used for carrying out magnetic separation cleaning operation on contents in a pipetting suction head of the pipetting unit and comprises a second heating assembly; the substrate separate injection unit is used for adding a substrate solution and comprises a third heating assembly; the detection unit is used for detecting reactants in the reaction bin unit; and the controller controls the reaction bin unit, the pipetting unit, the magnetic separation cleaning unit, the substrate separate injection unit and the detection unit to work. Heating assemblies are added to the reaction bin unit, the magnetic separation cleaning unit and the substrate separate injection unit, so that samples and reagents are always in proper temperature conditions in the whole detection process, and the detection accuracy and the detection efficiency are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of in vitro diagnostic equipment, in particular to an immunoassay analyzer. BACKGROUND

[0002] Point-of-care testing (POCT) immunoassay analyzers have been widely used in medical testing due to their portability and ease of operation. Traditional POCT immunoassay analyzers usually use chemiluminescence technology for detection, which relies on chemical reactions to generate light signals to achieve quantitative analysis of specific substances in samples.

[0003] However, there is a significant problem in the prior art: during the detection process, the temperature of the sample or reagent is often not within the optimal range, which can lead to reduced accuracy of the detection results or slower reaction speed, thereby affecting the detection efficiency and the reliability of the results. Temperature is a key factor affecting the rate and stability of chemical reactions, and inappropriate temperature control can lead to decreased enzyme activity, changed reaction kinetics, and even non-specific reactions, which in turn affect the accuracy of the detection results.

[0004] Therefore, there is an urgent need for an immunoassay analyzer that can ensure that the sample and reagent are at an appropriate temperature throughout the detection process to ensure the effectiveness and rate of the reaction, improve the accuracy of the detection, and improve the operating efficiency of the equipment. CONTENT OF THE INVENTION

[0005] The purpose of the embodiments of the present application is to provide an immunoassay analyzer that solves the technical problem of the prior art that the temperature of the sample or reagent is not within the appropriate range, leading to reduced accuracy of the detection results or slower reaction speed, thereby affecting the detection efficiency.

[0006] The embodiments of the present application provide an immunoassay analyzer, comprising: a reaction chamber unit, a pipetting unit, a magnetic separation and cleaning unit, a substrate dispensing unit, a detection unit, and a controller; the reaction chamber unit comprises an incubation table and a first heating assembly, the first heating assembly is used to heat the incubation table; the pipetting unit is used for transferring samples and reagents; the magnetic separation and cleaning unit is used for magnetic separation and cleaning operation on the contents in the pipette tip of the pipetting unit, comprising a second heating assembly; the substrate dispensing unit is used for adding substrate liquid, comprising a third heating assembly, the third heating assembly is used to heat the substrate liquid; the detection unit is used for detecting the reactants in the reaction chamber unit; the controller is used to control the reaction chamber unit, the pipetting unit, the magnetic separation and cleaning unit, the substrate dispensing unit, and the detection unit to work.

[0007] Further, the first heating assembly comprises a first heating rod, a first temperature sensor and a first temperature control switch, which are used to control the temperature of the reagent strip and the liquid in the reaction cup.

[0008] Further, the magnetic separation and cleaning unit further comprises a magnetic attraction fixing block and a magnet, the magnet is arranged inside the magnetic attraction fixing block, a pit matched with the pipette tip is arranged on the magnetic attraction fixing block, which is used to contain the pipette tip and magnetically separate the impurities in the content of the pipette tip; the second heating assembly comprises a second heating rod, a second temperature sensor and a second temperature control switch, and the second heating assembly is installed in the magnetic attraction fixing block.

[0009] Further, the magnetic separation and cleaning unit further comprises a y-direction driving assembly, the y-direction driving assembly comprises a screw rod motor fixing block, a screw rod motor and a screw rod, the magnetic attraction fixing block is connected with one end of the screw rod, the screw rod motor drives the screw rod to rotate and drives the magnetic attraction fixing block to move in the y-direction.

[0010] Further, the substrate dispensing unit further comprises a substrate dispensing mounting seat and a substrate dispensing pipeline, the third heating assembly is installed on the substrate dispensing mounting seat, the third heating assembly comprises a heater base, a third heating rod, a third temperature sensor and a third temperature control switch, the third heating rod, the third temperature sensor and the third temperature control switch are located inside the heater base, and the substrate dispensing pipeline is coiled on the heater base.

[0011] Further, the third heating assembly further comprises heat preservation cotton and liquid injection heat insulation blocks, the heat preservation cotton is wrapped outside the substrate dispensing pipeline, and the liquid injection heat insulation blocks are installed between the heater base and the substrate dispensing mounting seat.

[0012] Further, the substrate dispensing unit further comprises a substrate dispensing support plate and an x-direction driving assembly, the x-direction driving assembly is arranged on the substrate dispensing support plate, the x-direction driving assembly comprises an x-direction driving motor, a synchronous wheel belt drag chain structure, an x-direction linear rail and an x-direction sliding block, and the synchronous wheel belt drag chain structure drives the x-direction sliding block to move on the x-direction linear rail.

[0013] Further, the substrate dispensing unit further comprises a z-direction driving assembly, the z-direction driving assembly is arranged on the x-direction sliding block; the z-direction driving assembly comprises a z-direction driving base, a z-direction driving motor, a cam, a matching column and a z-direction linear rail, the z-direction driving base is fixed on the x-direction sliding block, the z-direction driving motor and the z-direction linear rail are fixed on the z-direction driving base, the matching column is connected with the substrate dispensing mounting seat, the z-direction driving motor drives the cam to rotate, the cam contacts the matching column to drive the substrate dispensing mounting seat to move on the z-direction linear rail.

[0014] Further, the x-direction driving assembly further comprises an x-direction light coupling baffle and an x-direction light coupling, the x-direction light coupling is mounted on the substrate dispensing support plate, and the x-direction light coupling baffle is fixed on the x-direction sliding block or the z-direction driving base; the z-direction driving assembly further comprises a z-direction light coupling baffle and a z-direction light coupling, the x-direction light coupling is mounted on the z-direction driving base, and the z-direction light coupling baffle is fixed on the substrate dispensing mounting seat.

[0015] Further, the substrate dispensing unit further comprises a code scanning assembly for scanning the reagent strip.

[0016] The utility model embodiment has at least the following technical effects:

[0017] The utility model embodiment provides an immune analyzer, reaction chamber unit includes the incubation platform, first heating assembly is located below the incubation platform, and heating incubation platform makes reagent strip and the liquid in reaction cup heat preservation, magnetic separation and cleaning unit carries out magnetic separation and cleaning operation to the content in pipette tip in some transfer processes of pipette unit, including second heating assembly, so that when the combined antigen antibody is separated, the combined antigen antibody is in the best environment, substrate dispensing unit includes third heating assembly, and substrate dispensing is the last step operation before chemiluminescence reaction, in order to guarantee the stability of reaction liquid temperature, it is necessary to heat to the required temperature of reaction liquid and then inject liquid into reaction cup to the substrate liquid filled, detection unit detects the luminescence of reactant in reaction cup, and controller controls reaction chamber unit, pipette unit, magnetic separation and cleaning unit and substrate dispensing unit to work cooperatively.

[0018] The immune analyzer of the application adds a heating assembly in the reaction chamber unit, the magnetic separation and cleaning unit and the substrate dispensing unit, and through precise temperature control technology, ensures that the sample and the reagent are always in suitable temperature conditions in the whole detection process. By optimizing the temperature control, the application aims to improve the accuracy and efficiency of detection, reduce non-specific reactions caused by improper temperature, and improve the overall performance of the immune analyzer. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments of the application. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0020] Figure 1 The partial structure frame schematic diagram of the immune analyzer provided by the embodiments of the application is shown in the figure.

[0021] Figure 2 Part structure schematic diagram of reaction chamber unit provided for the embodiment of the present application;

[0022] Figure 3 Part structure plane schematic diagram of magnetic separation and cleaning unit provided for the embodiment of the present application;

[0023] Figure 4 Structure schematic diagram of magnetic separation and cleaning unit provided for the embodiment of the present application;

[0024] Figure 5 Structure schematic diagram of substrate dispensing unit provided for the embodiment of the present application;

[0025] Figure 6 First part structure schematic diagram of substrate dispensing unit provided for the embodiment of the present application;

[0026] Figure 7 Second part structure schematic diagram of substrate dispensing unit provided for the embodiment of the present application;

[0027] Figure 8 Third part structure schematic diagram of substrate dispensing unit provided for the embodiment of the present application;

[0028] Figure 9 Third part structure cross-sectional schematic diagram of substrate dispensing unit provided for the embodiment of the present application.

[0029] Icon: 1-reaction chamber unit; 2-magnetic separation and cleaning unit; 3-substrate dispensing unit; 4-pipetting unit; 5-detection unit; 10-incubation table; 11-first heating assembly; 12-incubation mounting base plate; 21-second heating assembly; 22-magnetic attraction fixing block; 30-substrate dispensing support plate; 31-third heating assembly; 32-substrate dispensing mounting seat; 33-substrate dispensing pipeline; 34-x-direction driving assembly; 35-z-direction driving assembly; 36-code scanning assembly; 37-dispensing head; 101-reagent area; 102-reaction cup area; 211-second heating rod; 212-second temperature sensor; 213-second temperature control switch; 221-magnet; 220-pit; 231-screw motor fixing block; 232-screw motor; 233-screw rod; 234-linear bearing; 235-linear guide rod; 236-screw rod limiting block; 237-y-direction optical coupling blocking piece; 238-y-direction optical coupling; 310-heater base; 311-third heating rod; 312-third temperature sensor; 313-third temperature control switch; 314-heat preservation cotton; 315-liquid injection heat insulation block; 341-x-direction driving motor; 343-x-direction linear rail; 344-x-direction sliding block; 345-x-direction optical coupling blocking piece; 346-x-direction optical coupling; 351-z-direction driving base; 352-z-direction driving motor; 353-cam; 354-matching column; 355-z-direction linear rail; 356-matching column fixing piece; 357-z-direction optical coupling blocking piece; 358-z-direction optical coupling; 3421-driving driving wheel; 3422-driving driven wheel; 3423-tow chain group. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0031] In the description of the present application, it should be noted that the positions or location relationships indicated by the terms “inner”, “outer” and the like are based on the positions or location relationships shown in the drawings, or the positions or location relationships commonly placed when the products of the present application are used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated devices or elements must have a particular position, be constructed and operated in a particular position, and therefore cannot be understood as limiting the present application. In addition, the terms “first”, “second” and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present application, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "set", "connected" should be understood broadly, for example, can be fixedly connected, can also be detachably connected, or integrally connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] Please refer to Figures 1 to 9 The embodiment of the present application provides an immune analyzer, which comprises: a reaction chamber unit 1, a magnetic separation and cleaning unit 2, a substrate dispensing unit 3, a pipetting unit 4, a detection unit 5 and a controller; the reaction chamber unit comprises an incubation table 10 and a first heating assembly 11, and the first heating assembly 11 is used for heating the incubation table 10; the pipetting unit 4 is used for transferring samples and reagents; the magnetic separation and cleaning unit 2 is used for performing a magnetic separation and cleaning operation on the contents in the pipette tip of the pipetting unit 4, and comprises a second heating assembly 21; the substrate dispensing unit 3 is used for adding a substrate liquid, and comprises a third heating assembly 31, and the third heating assembly 31 is used for heating the substrate liquid; the detection unit 5 is used for detecting the reactants in the reaction chamber unit 1; and the controller is used for controlling the sample reaction chamber unit 1, the pipetting unit 4, the magnetic separation and cleaning unit 2, the substrate dispensing unit 3 and the detection unit 5 to work.

[0034] In the embodiment, the reaction chamber unit 1 comprises the incubation table 10, the incubation table 10 comprises a reagent area 101 and a reaction cup area 102 respectively used for placing reagent strips and reaction cups, the first heating assembly 11 is located below the incubation table 10, and the incubation table 10 is heated so that the liquid in the reagent strips and the reaction cups is heated and kept warm; the magnetic separation and cleaning unit performs a magnetic separation and cleaning operation on the contents in the pipette tip during some transfer processes of the pipetting unit, and comprises the second heating assembly 21, so that the combined antigen-antibody is in the best environment when the combined antigen-antibody is magnetically separated; the substrate dispensing unit 3 comprises the third heating assembly 31, the substrate dispensing is the last operation before the chemiluminescence reaction, and it is necessary to heat the added substrate liquid to the required temperature of the reaction liquid and then inject the liquid into the reaction cup in order to ensure the stability of the temperature of the reaction liquid; the detection unit 5 detects the luminescence of the reactants in the reaction cup; and the controller controls the reaction chamber unit, the pipetting unit, the magnetic separation and cleaning unit and the substrate dispensing unit to work cooperatively. The immune analyzer of the present application adds the heating assembly in the reaction chamber unit 1, the magnetic separation and cleaning unit 2 and the substrate dispensing unit 3, and through the precise temperature control technology, it is ensured that the samples and reagents are always in the appropriate temperature condition in the whole detection process. Through the optimization of temperature control, the present application aims to improve the accuracy and efficiency of detection, reduce the non-specific reaction caused by improper temperature, and thus improve the overall performance of the immune analyzer.

[0035] Optionally, the first heating assembly 11 comprises a first heating rod, a first temperature sensor and a first temperature control switch, which are used to control the temperature of the reagent strip and the liquid in the reaction cup. In this embodiment, the first heating rod can be provided in multiple, and the first temperature control switch and the first temperature sensor are connected with the controller. The controller controls the opening or closing of the first temperature control switch according to the temperature information of the first temperature sensor, so that the output power of the first heating rod meets the expected temperature requirement.

[0036] In an optional embodiment, after the first temperature control switch receives the temperature of the first temperature sensor, it automatically cuts off the power if it reaches a certain temperature, so that the first heating rod stops heating, so that the incubation table 10 is at a suitable temperature and does not damage the characteristics of the reagent due to excessive temperature.

[0037] Optionally, the reaction chamber unit 1 further comprises a heat insulation support column and an incubation installation bottom plate 12. The incubation table 10 is connected with the incubation installation bottom plate 12 through the heat insulation support column, preventing the heat of the first heating rod from being conducted to other unnecessary temperature control parts. Preferably, the heat insulation support column is made of non-metallic heat insulation material. Preferably, the incubation table 10 is wrapped with thermal insulation cotton around the four sides to reduce energy loss and facilitate accurate temperature control.

[0038] Optionally, referring to Figure 3 , the magnetic separation and cleaning unit 2 further comprises a magnetic attraction fixing block 22 and a magnet 221, the magnet 221 is arranged inside the magnetic attraction fixing block 22, and the magnetic attraction fixing block 22 is provided with a pit 220 matched with the liquid suction head, which is used to contain the liquid suction head and separate the impurities in the content thereof. As can be seen in Figure 3 , eight rows of magnets 221 are arranged behind and on both sides of the six pits 220, which can ensure the effect of magnetic separation and cleaning; the second heating assembly 21 comprises a second heating rod 211, a second temperature sensor 212 and a second temperature control switch 213, and the second heating assembly 21 is installed inside the magnetic attraction fixing block 22. In this embodiment, the second heating rod 211 can be provided in one or more, and the second temperature control switch 213 and the second temperature sensor 212 are connected with the controller. The controller controls the opening or closing of the second temperature control switch 213 according to the temperature information of the second temperature sensor 212, so that the output power of the second heating rod 211 meets the expected temperature requirement.

[0039] In an optional embodiment, after the second temperature control switch 213 receives the temperature of the second temperature sensor 212, it automatically cuts off the power if it reaches a certain temperature, so that the second heating rod 211 stops heating, so that the sample or reagent is at a suitable temperature when performing magnetic separation and cleaning.

[0040] Optionally, referring to Figure 4The magnetic separation and cleaning unit 2 further comprises a y-direction driving assembly, which comprises a screw motor fixing block 231, a screw motor 232, and a screw rod 233. The magnetic attraction fixing block 22 is connected to one end of the screw rod 233. The screw motor 232 drives the screw rod 233 to rotate and drives the magnetic attraction fixing block 22 to move in the y-direction. In this embodiment, the magnetic separation and cleaning unit can move in the y-direction according to the requirements in the detection process, thereby increasing the flexibility of the equipment.

[0041] Optionally, the y-direction driving assembly further comprises a linear bearing 234, a linear guide rod 235, and a screw rod limiting block 236. The screw rod limiting block 236 is connected to the other end of the screw rod 233. After the two linear bearings 234 are fixed on the corresponding positions of the screw motor fixing block 231, the two linear guide rods 235 are inserted. The two ends of the linear guide rod 235 are connected to the magnetic attraction fixing block 22 and the screw rod limiting block 236, respectively, for guiding.

[0042] Optionally, the y-direction driving assembly further comprises a y-direction optical coupling baffle 237 and a y-direction optical coupling 238. The y-direction optical coupling 238 is arranged on the screw motor fixing block 231, and the y-direction optical coupling baffle 237 is arranged on the magnetic attraction fixing block 22. The two are matched for use to realize the initialization positioning of the magnetic separation and cleaning avoidance assembly.

[0043] Optionally, mainly referring to Figures 5 to 9 The substrate dispensing unit 3 further comprises a substrate dispensing mounting seat 32 and a substrate dispensing pipeline 33. The third heating assembly 31 is installed on the substrate dispensing mounting seat 32. The third heating assembly comprises a heater base 310, a third heating rod 311, a third temperature sensor 312, and a third temperature control switch 313. The third heating rod 311, the third temperature sensor 312, and the third temperature control switch 313 are located inside the heater base 310. The substrate dispensing pipeline 33 is coiled on the heater base 310. The heated substrate liquid is added into the reaction cup through the dispensing head 37. In this embodiment, the third temperature control switch 313 and the third temperature sensor 312 are connected to the controller. The controller controls the opening or closing of the third temperature control switch 313 according to the temperature information of the third temperature sensor 312, so that the output power of the third heating rod 311 meets the expected temperature requirement. Preferably, the outer surface of the heater base 310 is provided with a spiral groove. The substrate dispensing pipeline 33 is spirally coiled in the spiral groove of the heater base 310, so as to ensure sufficient heat conduction.

[0044] In an optional embodiment, after the third temperature control switch 313 receives the temperature of the third temperature sensor 312, it automatically cuts off the power supply if it reaches a certain temperature, so that the third heating rod 311 stops heating, and the substrate liquid is at an appropriate temperature.

[0045] Optionally, the third heating assembly 31 further comprises heat preservation cotton 314 and liquid injection heat insulation block 315. The heat preservation cotton 314 is wrapped outside the substrate injection pipeline 33, and the liquid injection heat insulation block 315 is installed between the heater base 310 and the substrate injection mounting seat 32. In this embodiment, the heat preservation cotton 314 and the liquid injection heat insulation block 315 have a heat insulation effect, reducing heat loss and temperature interference caused by external factors.

[0046] Optionally, the substrate injection unit 3 further comprises a substrate injection support plate 30 and an x-direction driving assembly 34. The x-direction driving assembly 34 is arranged on the substrate injection support plate 30. The x-direction driving assembly 34 comprises an x-direction driving motor 341, a synchronous wheel belt drag chain structure, an x-direction linear rail 343, and an x-direction sliding block 344. The synchronous wheel belt drag chain structure drives the x-direction sliding block 344 to move on the x-direction linear rail 343. The synchronous wheel belt drag chain structure comprises a driving driving wheel 3421, a driving driven wheel 3422, a belt, and a drag chain group 3423. Part of the drag chain group 3423 is connected to the belt, and the other part is connected to the x-direction sliding block 344. The belt is driven by the x-direction driving motor 341, thereby driving the drag chain group 3423 and the x-direction sliding block 344 to move. In this embodiment, the substrate injection unit can move in the x-direction, ensuring that the injection unit can cope with multiple reaction cups arranged in the x-direction, and improving the detection efficiency of the equipment.

[0047] Optionally, the substrate injection unit 3 further comprises a z-direction driving assembly 35. The z-direction driving assembly 35 is arranged on the x-direction sliding block 344. The z-direction driving assembly 35 comprises a z-direction driving base 351, a z-direction driving motor 352, a cam 353, a matching column 354, and a z-direction linear rail 355. The z-direction driving base 351 is fixed on the x-direction sliding block 344. The z-direction driving motor 352 and the z-direction linear rail 355 are fixed on the z-direction driving base 351. The matching column 354 is connected with the substrate injection mounting seat 32. The z-direction driving motor 352 drives the cam 353 to rotate, and the cam 353 contacts the matching column 354 to drive the substrate injection mounting seat 32 to move on the z-direction linear rail 355. In this embodiment, the z-direction driving motor 352 drives the cam 353 to realize the up-down movement of the substrate injection mounting seat 32 in the z-axis direction. The maximum stroke in the z-direction is twice the eccentricity of the cam 353, and the self-weight is used for returning.

[0048] In an optional embodiment, the z-direction driving assembly 35 comprises a matching column fixing member 356. The matching column 354 is fixedly connected with the substrate injection mounting seat 32 through the matching column fixing member 356.

[0049] Optionally, the x-direction driving assembly 34 further comprises an x-direction optical coupling block 345 and an x-direction optical coupler 346, the x-direction optical coupler 346 is installed on the substrate dispensing support plate 30, and the x-direction optical coupling block 345 is fixed on the x-direction sliding block 344 or the z-direction driving base 351; the z-direction driving assembly 35 further comprises a z-direction optical coupling block 357 and a z-direction optical coupler 358, the z-direction optical coupler 358 is installed on the z-direction driving base 351, and the z-direction optical coupling block 357 is fixed on the substrate dispensing mounting seat 32. In the embodiment, the z-direction optical coupling block 357 cooperates with the z-direction optical coupler 358 to realize the position detection of the initial position and the terminal position in the z-axis direction; the x-direction optical coupling block 345 cooperates with the x-direction optical coupler 346 to realize the position detection of the initial position and the terminal position in the x-axis direction, thereby effectively ensuring that the substrate dispensing unit can accurately cooperate with the position of the reaction cup.

[0050] Optionally, the substrate dispensing unit 3 further comprises a code scanning assembly 36, which is used for scanning the reagent strip. In the embodiment, the code scanning assembly 36 is used to accurately acquire the information of the whole detection process, and the reagent strip is also scanned to ensure that the sources of various substances in the reaction cup are traceable.

[0051] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0052] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An immunoassay instrument characterized by, The application relates to a reaction chamber unit, a pipetting unit, a magnetic separation and cleaning unit, a substrate dispensing unit, a detection unit and a controller. The reaction chamber unit comprises an incubation table and a first heating assembly for heating the incubation table. The pipetting unit is used for transferring samples and reagents. The magnetic separation and cleaning unit is used for performing a magnetic separation and cleaning operation on the contents in the pipette tip of the pipetting unit, and comprises a second heating assembly. The substrate dispensing unit is used for adding a substrate liquid, and comprises a third heating assembly for heating the substrate liquid. The detection unit is used for detecting the reactants in the reaction chamber unit. The controller is used for controlling the reaction chamber unit, the pipetting unit, the magnetic separation and cleaning unit, the substrate dispensing unit and the detection unit. The first heating assembly comprises a first heating rod, a first temperature sensor and a first temperature control switch, and is used for controlling the temperature of the liquid in the reagent strip and the reaction cup.

2. The immunoassay analyzer according to claim 1, characterized by, The magnetic separation and cleaning unit further comprises a magnetic attraction fixing block and a magnet, the magnet is arranged in the magnetic attraction fixing block, and a recess matched with the pipette tip is arranged on the magnetic attraction fixing block and used for containing the pipette tip and performing magnetic separation on impurities in the contents of the pipette tip.

3. The immunoassay analyzer according to claim 1, characterized by, The second heating assembly comprises a second heating rod, a second temperature sensor and a second temperature control switch, and is installed in the magnetic attraction fixing block. The magnetic separation and cleaning unit further comprises a y-direction driving assembly, the y-direction driving assembly comprises a lead screw motor fixing block, a lead screw motor and a lead screw, the magnetic attraction fixing block is connected with one end of the lead screw, and the lead screw motor drives the lead screw to rotate and drives the magnetic attraction fixing block to move in the y direction.

4. The immunoassay analyzer according to claim 3, characterized by The substrate dispensing unit further comprises a substrate dispensing mounting seat and a substrate dispensing pipeline, the third heating assembly is installed on the substrate dispensing mounting seat, the third heating assembly comprises a heater base, a third heating rod, a third temperature sensor and a third temperature control switch, the third heating rod, the third temperature sensor and the third temperature control switch are located in the heater base, and the substrate dispensing pipeline is coiled on the heater base.

5. The immunoassay analyzer according to claim 1, characterized by The third heating assembly further comprises heat preservation cotton and a liquid injection heat insulation block, the heat preservation cotton is wrapped outside the substrate dispensing pipeline, and the liquid injection heat insulation block is installed between the heater base and the substrate dispensing mounting seat.

6. The immunoassay analyzer according to claim 5, characterized by The substrate dispensing unit further comprises a substrate dispensing support plate and an x-direction driving assembly, the x-direction driving assembly is arranged on the substrate dispensing support plate, the x-direction driving assembly comprises an x-direction driving motor, a synchronous wheel belt drag chain structure, an x-direction linear rail and an x-direction sliding block, and the synchronous wheel belt drag chain structure drives the x-direction sliding block to move on the x-direction linear rail.

7. The immunoassay analyzer according to claim 5, characterized by The substrate dispensing unit further comprises a z-direction driving assembly, and the z-direction driving assembly is arranged on the x-direction sliding block.

8. The immunoassay analyzer according to claim 7, characterized by ​ The z-direction driving assembly comprises a z-direction driving base, a z-direction driving motor, a cam, a matching column and a z-direction linear rail, the z-direction driving base is fixed on the x-direction sliding block, the z-direction driving motor and the z-direction linear rail are fixed on the z-direction driving base, the matching column is connected with the substrate dispensing mounting seat, the z-direction driving motor drives the cam to rotate, the cam contacts the matching column to drive the substrate dispensing mounting seat to move on the z-direction linear rail.

9. The immunoassay analyzer according to claim 8, characterized by The x-direction driving assembly further comprises an x-direction optical coupling baffle and an x-direction optical coupling, the x-direction optical coupling is installed on the substrate dispensing support plate, and the x-direction optical coupling baffle is fixed on the x-direction sliding block or the z-direction driving base. The z-direction driving assembly further comprises a z-direction optical coupling baffle and a z-direction optical coupling, the x-direction optical coupling is installed on the z-direction driving base, and the z-direction optical coupling baffle is fixed on the substrate dispensing mounting seat.

10. The immunoassay analyzer according to claim 1, characterized by, The substrate dispensing unit further comprises a code scanning assembly, and the code scanning assembly is used for scanning a reagent strip.

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