A blood analyzer and its detection method

Abstract

This application discloses a blood analyzer and its detection method. The blood analyzer includes a mode selection module, a control module, and a reaction component. The reaction component is used to detect the blood sample. The mode selection module is used to select one injection mode from multiple injection modes of the blood analyzer, including an automatic injection mode and an open injection mode. When the mode selection module switches the automatic injection mode to the open injection mode, the control module acquires the detection mode of the blood analyzer in the automatic injection mode and controls the reaction cell in the reaction component corresponding to the detection mode to be cleaned. This method cleans the blood analyzer, preventing contamination accumulation and improving the detection accuracy.

Description

Technical Field

[0001] This application relates to the field of blood testing technology, and in particular to a blood analyzer and its testing method. Background Technology

[0002] With the development of academic research and clinical testing, blood analyzers have high practical value in performing routine blood tests and / or specific protein tests on blood samples, which can greatly help patients in the detection and treatment of infection types.

[0003] Existing blood analyzers continuously test multiple blood samples, leading to the accumulation of contaminants and resulting in low accuracy. Summary of the Invention

[0004] To address the aforementioned issues, this application provides a blood analyzer and its detection method, which controls the cleaning of the reaction pool in the reaction assembly corresponding to the detection mode, thereby achieving the cleaning of the blood analyzer.

[0005] One technical solution adopted in this application is: to provide a blood analyzer, including a mode selection module, a control module, and a reaction component, wherein the reaction component is used to detect the blood sample, and the mode selection module is used to select one injection mode from multiple injection modes of the blood analyzer, wherein the multiple injection modes include an automatic injection mode and an open injection mode;

[0006] When the mode selection module switches the automatic sampling mode to the open sampling mode, the control module acquires the detection mode of the blood analyzer in the automatic sampling mode and controls the reaction cell in the reaction assembly corresponding to the detection mode to be cleaned.

[0007] The reaction assembly includes multiple reaction cells. When the mode selection module switches the automatic injection mode to the open injection mode, the control module uses a first cleaning mode to clean some of the multiple reaction cells.

[0008] When the mode selection module switches the automatic injection mode to the open injection mode, the control module uses a second cleaning mode to clean the remaining reaction cells in the plurality of reaction cells.

[0009] When the mode selection module switches the autosampler mode to the open sampler mode, if the control module obtains that the detection mode of the blood analyzer in the autosampler mode is a specific protein detection mode, then the first cleaning mode is used to clean the WBC reaction chamber and / or RBC reaction chamber of the reaction component.

[0010] The reaction assembly includes multiple reaction cells; when the mode selection module switches the automatic injection mode to the open injection mode, the control module controls the cleaning of the reaction cell corresponding to the detection mode, while the other reaction cells are not cleaned.

[0011] The blood analyzer further includes a sampling component, which is used to distribute the collected blood sample to the reaction component. The control module acquires the detection mode of the blood analysis in the automatic sampling mode, and the control module controls the sampling component to perform cleaning.

[0012] The sampling component includes a sampling needle, and the control module cleans the sampling needle through the sampling component and controls the sampling needle to draw in isolation air bubbles.

[0013] The detection mode is a specific protein detection mode. When the control module determines that the number of times the blood analyzer has detected the specific protein in the specific protein detection mode is an integer multiple of the preset number, the control module uses a first cleaning mode to clean the WBC reaction chamber and / or RBC reaction chamber of the reaction component.

[0014] Another technical solution adopted in this application is: providing a detection method for a blood analyzer, applied to the aforementioned blood analyzer, the detection method comprising:

[0015] The blood analyzer is equipped with an automatic sampling mode and an open sampling mode;

[0016] When the mode selection module switches the automatic sampling mode to the open sampling mode, the control module acquires the detection mode of the blood analyzer in the automatic sampling mode and controls the reaction cell in the reaction assembly corresponding to the detection mode to be cleaned.

[0017] The reaction assembly includes multiple reaction tanks, and the step of controlling the cleaning of the reaction tanks in the reaction assembly corresponding to the detection mode includes:

[0018] When the mode selection module switches the automatic injection mode to the open injection mode, the control module uses a first cleaning mode to clean some of the multiple reaction cells, and uses a second cleaning mode to clean the remaining reaction cells.

[0019] The blood analyzer disclosed in this application includes a mode selection module, a control module, and a reaction assembly. The mode selection module selects one injection mode from multiple injection modes of the blood analyzer, including an automatic injection mode and an open injection mode. When the mode selection module switches from the automatic injection mode to the open injection mode, the control module acquires the detection mode of the blood analyzer in the automatic injection mode and controls the reaction cell in the reaction assembly corresponding to the detection mode to be cleaned. This application achieves cleaning of the blood analyzer by controlling the cleaning of the reaction cell in the reaction assembly corresponding to the detection mode, avoiding the accumulation of contaminants, improving the detection accuracy of the blood analyzer, and enhancing the user experience. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0021] Figure 1 This is a schematic diagram of the structure of the first embodiment of the blood analyzer of this application;

[0022] Figure 2 This is a flowchart illustrating the first embodiment of the detection method of the blood analyzer of this application;

[0023] Figure 3 This is a flowchart illustrating the second embodiment of the detection method of the blood analyzer of this application;

[0024] Figure 4 yes Figure 3 A flowchart illustrating the first embodiment of step S302;

[0025] Figure 5 This is a flowchart illustrating the third embodiment of the detection method of the blood analyzer of this application. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It is understood that the specific embodiments described herein are only for explaining this application and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings, not all structures. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0027] The terms "first," "second," etc., used in this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0028] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0029] Please see Figure 1 As shown, Figure 1 This is a schematic diagram of the structure of the first embodiment of the blood analyzer of this application. The blood analyzer 10 of this application includes a mode selection module 11, a sampling component 12, a reaction component 13, and a control module 14. The blood analyzer 10 is equipped with multiple sample injection modes, including an automatic sample injection mode and an open sample injection mode. For example, the blood analyzer 10 can be set to an automatic sample injection mode and an open sample injection mode through the mode selection module 11.

[0030] The injection mode refers to the method by which the blood analyzer 10 draws blood samples from test tubes using the sampling component 12. Multiple injection modes include automatic injection mode and open injection mode. In automatic injection mode, the sampler pushes the test tube to draw the blood sample into the blood analyzer 10. For example, if a user places a test tube rack on the blood analyzer 10, the blood analyzer 10 can continuously test blood samples from multiple test tubes on the rack; that is, the blood analyzer 10 can continuously test multiple blood samples in automatic injection mode. In open injection mode, the user places the test tube under the sampling component 12 of the blood analyzer 10, and the blood analyzer 10 draws and tests the blood sample from the test tube.

[0031] The sampling component 12 is used to collect blood samples and distribute the collected blood samples to the reaction component 13. The blood analyzer 10 can be further configured with detection modes via the mode selection module 11. For example, the blood analyzer 10 may have a specific protein detection mode and a detection mode for routine blood tests. Therefore, the sampling component 12 distributes the collected blood samples to the reaction component 13 corresponding to the detection mode.

[0032] The routine blood test includes WBC (White Blood Cell) detection, HGB (Hemoglobin) detection, RBC (Red Blood Cell) detection, DIFF (Differential White Blood Cell Count) detection, or RET (Reticulocyte Count) detection. Specific proteins include one of the following: SAA (serum amyloid A protein), CRP (C-reactive protein), TRF (transferrin), Hs-CRP (high-sensitivity C-reactive protein), PCT (procalcitonin), and D-dimer.

[0033] Among them, the specific protein individual detection mode indicates a mode that outputs only specific protein parameters and HCT test results. Specific protein individual detection modes can be SAA individual detection mode, CRP individual detection mode, SAA+CRP individual detection mode, TRF individual detection mode, Hs-CRP individual detection mode, PCT individual detection mode, or D-Dimer individual detection mode, etc. The detection mode including complete blood count indicates a mode that outputs results including the total number of white blood cells, red blood cells, platelets, or hemoglobin, etc. The detection mode including complete blood count can be CBC (complete blood count) + DIFF + CRP detection mode, CBC + DIFF + SAA detection mode, CBC + DIFF + SAA + CRP detection mode, CBC + SAA detection mode, CBC + CRP detection mode, or CBC + CRP + SAA detection mode, etc. For example, when the detection mode including complete blood count is selected in mode selection module 11, the blood analyzer 10 acts as an integrated machine for combined detection of complete blood count, SAA, and CRP.

[0034] The reaction assembly 13 is used to test blood samples, that is, the reaction assembly 13 tests blood samples according to the detection mode. When the mode selection module 11 switches the automatic sampling mode to the open sampling mode, the control module 14 obtains the detection mode of the blood analyzer 10 in the automatic sampling mode and controls the reaction cell in the reaction assembly 13 corresponding to the detection mode to be cleaned.

[0035] In one embodiment, the reaction cell in the reaction assembly 13 corresponding to the detection mode is cleaned. Specifically, the control module 14 controls the cleaning of a portion of the reaction cell in the reaction assembly 13 corresponding to the detection mode. For example, the detection mode of the blood analyzer 10 in the automatic sampling mode can be CBC+DIFF+SAA detection mode. When the mode selection module 11 switches the automatic sampling mode to the open sampling mode, the control module 14 controls the cleaning of a portion of the reaction cell (SAA reaction cell) in the reaction assembly 13 corresponding to the detection mode. Similarly, the detection mode of the blood analyzer 10 in the automatic sampling mode can be CBC+DIFF detection mode. When the mode selection module 11 switches the automatic sampling mode to the open sampling mode, the control module 14 controls the cleaning of a portion of the reaction cell (DIFF reaction cell) in the reaction assembly 13 corresponding to the detection mode. The blood analyzer 10 can be configured for CRP-only detection in automatic sampling mode. When the mode selection module 11 switches the automatic sampling mode to open sampling mode, the control module 14 controls the cleaning of the portion of the reaction chamber (CRP reaction chamber) in the reaction assembly 13 corresponding to the detection mode. This effectively cleans the blood analyzer 10, preventing contamination accumulation in the reaction chamber corresponding to the detection mode, reducing cleaning fluid usage, and saving costs.

[0036] In one embodiment, the control module 14 controls the cleaning of all reaction cells in the reaction assembly 13 corresponding to the detection mode. For example, in the automatic sampling mode, the blood analyzer 10 can perform a CBC+DIFF+SAA detection mode. When the mode selection module 11 switches the automatic sampling mode to the open sampling mode, the control module 14 controls the cleaning of all reaction cells (SAA reaction cell, WBC reaction cell 131, RBC reaction cell 132, and DIFF reaction cell) in the reaction assembly 13 corresponding to the detection mode. Similarly, in the automatic sampling mode, the blood analyzer 10 can perform a CBC+DIFF detection mode. When the mode selection module 11 switches the automatic sampling mode to the open sampling mode, the control module 14 controls the cleaning of all reaction cells (WBC reaction cell 131, RBC reaction cell 132, and DIFF reaction cell) in the reaction assembly 13 corresponding to the detection mode. The blood analyzer 10 can be configured for CRP-only detection in automatic sample introduction mode. When the mode selection module 11 switches the automatic sample introduction mode to open sample introduction mode, the control module 14 controls the cleaning of all reaction cells (WBC reaction cell 131, RBC reaction cell 132, and CRP reaction cell) in the reaction assembly 13 corresponding to the detection mode. Therefore, cleaning all reaction cells corresponding to the detection mode cleans the blood analyzer 10 and improves its detection accuracy.

[0037] In summary, the blood analyzer 10 in this embodiment only cleans the reaction cell corresponding to the detection mode, which can clean the blood analyzer 10, avoid the accumulation of contaminants in the blood analyzer 10, and improve the detection accuracy of the blood analyzer 10.

[0038] In one embodiment, the reaction assembly 13 includes multiple reaction cells (e.g., WBC reaction cell 131, RBC reaction cell 132, CRP reaction cell, SAA reaction cell, and DIFF reaction cell). When the mode selection module 11 switches the autosampler mode to the open sampler mode, the control module 14 controls the cleaning of the reaction cell corresponding to the detection mode, while the other reaction cells are not cleaned.

[0039] For example, when the blood analyzer 10 is in CBC+DIFF detection mode in autosampler mode, and the mode selection module 11 switches the autosampler mode to open sampling mode, the control module 14 controls the cleaning of the DIFF reaction cell, WBC reaction cell 131, and RBC reaction cell 132 in the reaction assembly 13, but does not clean the SAA reaction cell and CRP reaction cell. When the blood analyzer 10 is in CRP-only detection mode in autosampler mode, and the mode selection module 11 switches the autosampler mode to open sampling mode, the control module 14 controls the cleaning of the CRP reaction cell, WBC reaction cell 131, and RBC reaction cell 132 in the reaction assembly 13, but does not clean the SAA reaction cell and DIFF reaction cell.

[0040] Optionally, the blood analyzer 10 uses the CBC+DIFF detection mode in the automatic sampling mode. When the mode selection module 11 switches the automatic sampling mode to the open sampling mode, the control module 14 controls the cleaning of the DIFF reaction cell in the reaction assembly 13 and the cleaning of the pipeline near the DIFF reaction cell.

[0041] The blood analyzer 10 is in the CRP stand-alone detection mode in the automatic sample injection mode. When the mode selection module 11 switches the automatic sample injection mode to the open sample injection mode, the control module 14 controls the cleaning of the CRP reaction cell in the reaction component 13, but does not clean the DIFF reaction cell and the pipeline near the DIFF reaction cell, thus cleaning some components of the blood analyzer 10.

[0042] In this embodiment, the control module 14 controls the cleaning of the reaction tank corresponding to the detection mode, while the other reaction tanks are not cleaned. This reduces the amount of cleaning solution (e.g., diluent) used, thereby reducing costs.

[0043] In one embodiment, when the mode selection module 11 switches from autosampler mode to open sampler mode, the control module 14 uses a first cleaning mode to clean some of the reaction chambers in the multiple reaction chambers. For example, the control module 14 uses the first cleaning mode to clean the WBC reaction chamber 131 and / or RBC reaction chamber 132 of the reaction assembly 13. When the mode selection module 11 switches from autosampler mode to open sampler mode, the control module 14 uses a second cleaning mode to clean the remaining reaction chambers in the multiple reaction chambers. For example, the control module 14 uses the second cleaning mode to clean specific protein reaction chambers (such as CRP reaction chambers and SAA reaction chambers).

[0044] Specifically, the control module 14 obtains that the detection mode of the blood analyzer 10 in the automatic sample injection mode is the specific protein individual detection mode. When the mode selection module 11 switches the automatic sample injection mode to the open sample injection mode, the control module 14 uses the first cleaning mode to clean the WBC reaction cell 131 and / or RBC reaction cell 132 of the reaction component 13.

[0045] In this embodiment, the control module 14 uses a first cleaning mode to clean some of the reaction pools in multiple reaction pools, thereby strengthening the cleaning of some reaction pools and reducing the probability of the blood analyzer 10 malfunctioning.

[0046] In one embodiment, when the control module 14 cleans the WBC reaction tank 131 and / or the RBC reaction tank 132 using the first cleaning mode, the sapphire holes of the WBC reaction tank 131 and / or the sapphire holes of the RBC reaction tank 132 are subjected to at least one burning and backflushing. For example, the sapphire holes of the WBC reaction tank 131 and / or the sapphire holes of the RBC reaction tank 132 are burned and backflushed multiple times to remove blockages from the sapphire holes of the WBC reaction tank 131 and / or the RBC reaction tank 132, thereby reducing the probability of blockages in the WBC reaction tank 131 and / or the RBC reaction tank 132.

[0047] In one embodiment, when the control module 14 cleans the WBC reaction tank 131 and / or the RBC reaction tank 132 using the first cleaning mode, the WBC reaction tank 131 and / or the RBC reaction tank 132 are cleaned with a hemolysin, for example, with reagent R1, to remove blockages from the WBC reaction tank 131 and / or the RBC reaction tank 132 and reduce the probability of blockages in the WBC reaction tank 131 and / or the RBC reaction tank 132.

[0048] In other embodiments, the WBC reaction chamber 131 and / or the RBC reaction chamber 132 may be cleaned with a hemolytic agent, and the sapphire holes of the WBC reaction chamber 131 and / or the sapphire holes of the RBC reaction chamber 132 may be subjected to at least one burning and backflushing to de-clog the WBC reaction chamber 131 and / or the RBC reaction chamber 132, thereby improving the de-clogging effect of the WBC reaction chamber 131 and / or the RBC reaction chamber 132.

[0049] In one embodiment, the sampling component 12 includes a sampling needle 121. When the mode selection module 11 switches the automatic injection mode to the open injection mode, the control module 14 cleans the sampling needle 121 through the sampling component 12 and controls the sampling needle 121 to draw in isolation air bubbles.

[0050] The control module 14 cleans the outer and inner walls of the sampling needle 121 through the sampling component 12, which can remove contamination from the sampling needle 121 during automatic sampling mode and improve the detection accuracy of the blood analyzer 10. The control module 14 controls the sampling needle 121 to draw in isolation air bubbles through the sampling component 12, thereby preparing the blood analyzer 10 for open sampling mode.

[0051] This application provides a second embodiment of a blood analyzer 10, which is described based on the first embodiment of the blood analyzer 10. The blood analyzer 10 includes a specific protein detection module and a complete blood count (CBC) detection module. The specific protein detection module is used to perform specific protein detection on a blood sample, and the CBC detection module is used to perform a CBC detection on a whole blood sample. The specific protein detection module includes a specific protein reaction chamber in a reaction assembly 13, and the CBC detection module includes a WBC reaction chamber 131 and an RBC reaction chamber 132 in the reaction assembly 13.

[0052] The mode selection module 11 is used to select a detection mode from the various detection modes of the blood analyzer 10. When the mode selection module 11 selects the specific protein detection mode, the specific protein detection module in the blood analyzer 10 corresponding to the specific protein detection mode will detect the whole blood sample; that is, the control module 14 is used to control the specific protein detection module to perform the detection. At this time, the WBC reaction cell 131 is used as a dilution cell for the whole blood sample, and no hemolysin is added, which makes the WBC reaction cell 131 prone to clogging, thus preventing the blood analyzer 10 from functioning properly. In addition, the RBC reaction cell 132 of the complete blood count (CBC) detection module 13 is used to detect the diluted whole blood sample to calculate the hematocrit (HCT) value; in order to ensure the accuracy of the HCT value, the RBC reaction cell 132 also needs to be cleaned.

[0053] When the mode selection module 11 switches the detection mode of a specific protein to the detection mode of routine blood test, the control module 14 uses the first cleaning mode to clean the WBC reaction chamber 131 and / or the RBC reaction chamber 132.

[0054] For example, when the mode selection module 11 selects the automatic sample injection mode and switches from the CRP standalone detection mode to the routine blood test mode, the control module 14 uses the first cleaning mode to clean the WBC reaction chamber 131 and / or the RBC reaction chamber 132 to remove any blockages. Therefore, when the mode selection module 11 switches from the CRP standalone detection mode to the routine blood test mode, the control module 14 needs to use the first cleaning mode to clean the WBC reaction chamber 131 and / or the RBC reaction chamber 132 to remove any blockages, preventing blockages and ensuring the normal operation of the blood analyzer 10, thus improving the detection accuracy of the blood analyzer. Furthermore, using the first cleaning mode to perform enhanced cleaning of the WBC reaction chamber 131 and / or the RBC reaction chamber 132 can reduce the probability of malfunctions in the blood analyzer 10.

[0055] In one embodiment, when the blood analyzer 10 is in automatic mode and the detection mode is a specific protein detection mode, the specific protein detection module corresponding to the specific protein detection mode in the blood analyzer 10 performs the detection, that is, the control module 14 is used to control the specific protein detection module to perform the detection. For example, if the mode selection module 11 selects the SAA single detection mode, the control module 14 is used to control the specific protein detection module (such as the SAA detection module) corresponding to the SAA single detection mode to perform the detection on the whole blood sample; or, if the mode selection module 11 selects the CRP single detection mode, the control module 14 is used to control the specific protein detection module (such as the CRP detection module) corresponding to the CRP single detection mode to perform the detection on the whole blood sample.

[0056] When the specific protein detection module performs detection, the control module 14 can count the number of detections performed by the specific protein detection module in the specific protein standalone detection mode to obtain the detection count of the specific protein detection module. The control module 14 is used to compare the detection count with a preset count to determine whether the detection count is an integer multiple of the preset count; when the control module 14 determines that the detection count is an integer multiple of the preset count, the control module 14 is used to clean the reaction pool corresponding to the blood routine detection module 13 and the specific protein standalone detection mode using a first cleaning mode. The integer multiple is a positive integer greater than 0, such as an integer multiple of 1, 2, 3, 4, 5 or 6, etc.

[0057] The blood routine test module 13 and the reaction pool corresponding to the specific protein separate detection mode include WBC reaction pool 131 and RBC reaction pool 132. When the control module 14 determines that the number of detections of the specific protein detection module 12 is an integer multiple of the preset number, the control module 14 uses the first cleaning mode to clean WBC reaction pool 131 and / or RBC reaction pool 132.

[0058] In one embodiment, the control module 14 uses a first cleaning mode to clean the WBC reaction cell 131 to remove blockages, prevent blockages in the WBC reaction cell 131, and improve the detection accuracy of the blood analyzer.

[0059] For example, when the control module 14 determines that the number of tests performed by the specific protein detection module 12 is an integer multiple of a preset number, the control module 14 uses the first cleaning mode to clean the WBC reaction chamber 131 to remove blockages. Specifically, the blood analyzer 10 uses the WBC reaction chamber 131 as a dilution chamber for whole blood samples in the CRP standalone detection mode, which makes the WBC reaction chamber 131 prone to blockages. Therefore, when the control module 14 determines that the number of tests performed by the specific protein detection module 12 is an integer multiple of a preset number, the control module 14 needs to use the first cleaning mode to clean the WBC reaction chamber 131 to remove blockages.

[0060] In one embodiment, the control module 14 uses a first cleaning mode to clean the RBC reaction chamber 132 to remove blockages, thereby ensuring the accuracy of the HCT value and improving the detection accuracy of the blood analyzer.

[0061] In one embodiment, the control module 14 uses a first cleaning mode to clean the WBC reaction chamber 131 and the RBC reaction chamber 132 to remove blockages in the WBC reaction chamber 131 and the RBC reaction chamber 132, prevent blockages in the WBC reaction chamber 131, ensure the accuracy of the HCT value, improve the detection accuracy of the blood analyzer, and make it convenient for users to use.

[0062] The following details the detection steps of the specific protein detection module on a whole blood sample when the specific protein detection mode is selected in the mode selection module 11:

[0063] The control module 14 controls the sampling component 12 of the blood analyzer 10 to draw whole blood samples and distribute them to the specific protein reaction chamber of the specific protein detection module. Specifically, the control module 14 controls the sampling component 12 to move to a test tube to draw whole blood samples; the control module 14 controls the sampling component 12 to move to the specific protein reaction chamber to distribute whole blood samples to the specific protein reaction chamber; and the control module 14 controls the sampling component 12 to perform cleaning.

[0064] The control module 14 adds reagents to the specific protein reaction chamber and performs detection to obtain the detection results, which include specific protein parameters. Specifically, the control module 14 can control the sampling component 12 to draw reagents and inject them into the specific protein reaction chamber; the control module 14 also controls the sampling component 12 to perform cleaning. The whole blood sample and reagents in the specific protein reaction chamber are mixed and reacted, and the blood analyzer 10 detects the liquid in the specific protein reaction chamber to obtain the detection results.

[0065] The control module 14 controls the sampling component 12 to dispense whole blood samples into the WBC reaction chamber 131 for dilution. Specifically, the control module 14 can also control the sampling component 12 to dispense whole blood samples into the WBC reaction chamber 131 simultaneously with the dispensing of whole blood samples into a specific protein reaction chamber. The WBC reaction chamber 131 is used for a single dilution of the whole blood sample, resulting in the diluted sample in the WBC reaction chamber 131.

[0066] The control module 14 controls the sampling component 12 to add a partially diluted sample from the WBC reaction chamber 131 to the RBC reaction chamber 132 of the complete blood count (CBC) module to calculate the HCT (Hematocrit) value. After the sampling component 12 adds the partially diluted sample from the WBC reaction chamber 131 to the RBC reaction chamber 132, the RBC reaction chamber 132 performs a secondary dilution of the diluted sample, and the blood analyzer 10 analyzes the liquid in the RBC reaction chamber 132 to obtain the HCT value.

[0067] The control module 14 corrects the detection results based on the HCT value, wherein the control module 14 uses the HCT value to correct the detection results so that the corrected detection results are more accurate.

[0068] To reduce the consumption of hemolysing agent, in the specific protein detection mode, the WBC reaction cell 131 is used as a dilution cell for whole blood samples and no hemolysing agent is added. Therefore, the WBC reaction cell 131 is prone to clogging, rendering the blood analyzer 10 unusable. The blood analyzer 10 of this application, when the control module 14 determines that the number of tests is an integer multiple of a preset number, uses a first cleaning mode to clean the WBC reaction cell 131. This clears clogging in the WBC reaction cell 131, preventing clogging and ensuring the normal operation of the blood analyzer 10, thereby improving the detection accuracy of the blood analyzer 10.

[0069] In one embodiment, the preset number of detections is 1. When the control module 14 determines that the number of detections is an integer multiple of the preset number, the control module 14 is used to clean the WBC reaction chamber 131 and / or the RBC reaction chamber 132 using a first cleaning mode. Since any positive integer number of detections is an integer multiple of the preset number, the control module 14 is used to clean the WBC reaction chamber 131 and / or the RBC reaction chamber 132 using the first cleaning mode after each detection is completed. That is, when a specific protein detection module completes each detection, the control module 14 uses the first cleaning mode to clean the WBC reaction chamber 131 and / or the RBC reaction chamber 132.

[0070] In one embodiment, the preset number of detections is greater than 1. When the control module 14 determines that the number of detections is not an integer multiple of the preset number, the control module 14 uses a second cleaning mode to clean the WBC reaction chamber 131 and / or the RBC reaction chamber 132. For example, if the preset number of detections is 3, and the control module 14 counts 2 detections by the specific protein detection module, then the control module 14 determines that the number of detections is not an integer multiple of the preset number, and uses the second cleaning mode to clean the WBC reaction chamber 131 and / or the RBC reaction chamber 132.

[0071] When the control module 14 is used to clean the WBC reaction chamber 131 and / or the RBC reaction chamber 132 in the second cleaning mode, the WBC reaction chamber 131 and / or the RBC reaction chamber 132 can be cleaned with diluent to avoid cross-contamination of multiple whole blood samples in the WBC reaction chamber 131 and / or the RBC reaction chamber 132.

[0072] This application further provides a blood analyzer 10 according to a third embodiment, which differs from the blood analyzer 10 disclosed in the first embodiment in that: when the mode selection module 11 switches the automatic sampling mode to the open sampling mode, the control module 14 controls the sampling component 12 and / or the reaction component 13 to be cleaned; specifically, the control module 14 controls the cleaning of the sampling component 12; or, the control module 14 controls the cleaning of the reaction component 13; or, the control module 14 controls the cleaning of both the sampling component 12 and the reaction component 13.

[0073] When the blood analyzer 10 continuously tests multiple blood samples in automatic sampling mode, contamination accumulates in the sampling component 12 and / or the reaction component 13, affecting the accuracy of subsequent tests. In this embodiment, when the mode selection module 11 switches from automatic sampling mode to open sampling mode, the control module 14 controls the sampling component 12 and / or the reaction component 13 to clean, achieving automatic cleaning of the blood analyzer 10. This cleans the blood analyzer 10, prevents contamination accumulation, improves the detection accuracy of the blood analyzer 10, and enhances the user experience.

[0074] Since the sample volume of the blood analyzer 10 is different each time in the automatic sampling mode, the control module 14 further obtains the sample volume of the blood sample in the automatic sampling mode, that is, the sample volume of the blood sample of the blood analyzer 10 in the automatic sampling mode.

[0075] When the mode selection module 11 switches the automatic injection mode to the open injection mode, the control module 14 determines whether the sample volume has reached a preset threshold. If yes, that is, the sample volume has reached the preset threshold, the control module 14 uses the first cleaning mode to clean the sampling component 12 and / or the reaction component 13. If no, that is, the sample volume has not reached the preset threshold, the control module 14 uses the second cleaning mode to clean the sampling component 12 and / or the reaction component 13, wherein the cleaning intensity of the second cleaning mode is less than the cleaning intensity of the first cleaning mode.

[0076] In this embodiment, when the mode selection module 11 switches from automatic sampling mode to open sampling mode and the sample volume reaches a preset threshold, the control module 14 uses a first cleaning mode to clean the sampling component 12 and / or the reaction component 13. When the mode selection module 11 switches from automatic sampling mode to open sampling mode and the sample volume does not reach the preset threshold, the control module 14 uses a second cleaning mode to clean the sampling component 12 and / or the reaction component 13. This achieves cleaning of the blood analyzer 10, preventing contamination accumulation, improving the detection accuracy of the blood analyzer 10, and enhancing the user experience. Furthermore, the control module 14 selects either the first or second cleaning mode based on the sample volume to clean the sampling component 12 and / or the reaction component 13, making the blood analyzer 10 more intelligent and cost-effective. When the sample volume reaches the preset threshold, the control module 14 uses the first cleaning mode to perform enhanced cleaning of the sampling component 12 and / or the reaction component 13, which can reduce the probability of blood analyzer malfunction.

[0077] In one embodiment, the reaction assembly 13 includes a WBC reaction tank 131 and an RBC reaction tank 132. When the control module 14 cleans the reaction assembly 13 using a first cleaning mode, the sapphire holes of the WBC reaction tank 131 and / or the sapphire holes of the RBC reaction tank 132 are subjected to at least one burning and backflushing.

[0078] When the mode selection module 11 switches from automatic sample injection mode to open sample injection mode, the blood analyzer 10 uses a first cleaning mode to clean the reaction components 13. Specifically, the control module 14 controls the cleaning of the front and rear chambers of the WBC reaction cell 131, and performs at least one ignition and backflushing operation on the sapphire orifice of the WBC reaction cell 131; and / or, the control module 14 controls the cleaning of the front and rear chambers of the RBC reaction cell 132, and performs at least one ignition and backflushing operation on the sapphire orifice of the RBC reaction cell 132. Therefore, it is possible to clear blockages in the sapphire orifice of the WBC reaction cell 131 and / or the sapphire orifice of the RBC reaction cell 132, improving the detection accuracy of the blood analyzer 10 and enhancing the user experience.

[0079] Optionally, when the mode selection module 11 switches from automatic sampling mode to open sampling mode, the control module 14 controls the sampling component 12 and / or the reaction component 13 to be cleaned, and the tubing of the blood analyzer 10 is also cleaned. The tubing of the blood analyzer 10 may include tubing corresponding to the sampling component 12 or tubing corresponding to the reaction component 13. Therefore, the blood analyzer 10 further cleans the tubing to remove residual liquid and improve the detection accuracy of the blood analyzer 10.

[0080] Please see Figure 2 As shown, Figure 2 This is a flowchart illustrating the first embodiment of the detection method for the blood analyzer of this application. The detection method of this embodiment is applied to the aforementioned blood analyzer 10, and the detection method includes the following steps:

[0081] S201: The blood analyzer 10 is equipped with an automatic sample injection mode and an open sample injection mode.

[0082] The blood analyzer 10 can be set to automatic sampling mode and open sampling mode through the mode selection module 11.

[0083] S202: When the mode selection module 11 switches the automatic sampling mode to the open sampling mode, the control module 14 obtains the detection mode of the blood analyzer 10 in the automatic sampling mode and controls the reaction cell in the reaction assembly 13 corresponding to the detection mode to be cleaned.

[0084] Specifically, the blood analyzer 10 can operate in CBC+DIFF+SAA detection mode in automatic sampling mode. When the mode selection module 11 switches the automatic sampling mode to open sampling mode, the control module 14 controls the cleaning of the reaction cell (i.e., the SAA reaction cell) in the reaction assembly 13 corresponding to the detection mode. The blood analyzer 10 can also operate in CBC+DIFF detection mode in automatic sampling mode. When the mode selection module 11 switches the automatic sampling mode to open sampling mode, the control module 14 controls the cleaning of the reaction cell (i.e., the DIFF reaction cell) in the reaction assembly 13 corresponding to the detection mode. Furthermore, the blood analyzer 10 can operate in CRP-only detection mode in automatic sampling mode. When the mode selection module 11 switches the automatic sampling mode to open sampling mode, the control module 14 controls the cleaning of the reaction cell (i.e., the CRP reaction cell) in the reaction assembly 13 corresponding to the detection mode.

[0085] In summary, the blood analyzer 10 in this embodiment only cleans the reaction cell corresponding to the detection mode, which can clean the blood analyzer 10, avoid the accumulation of contaminants in the blood analyzer 10, and improve the detection accuracy of the blood analyzer 10.

[0086] In one embodiment, when the mode selection module 11 switches the automatic injection mode to the open injection mode, the control module 14 controls the cleaning of the reaction cell corresponding to the detection mode, while the other reaction cells are not cleaned.

[0087] For example, in the automatic sampling mode of the blood analyzer 10, the detection mode is CBC+DIFF. When the mode selection module 11 switches the automatic sampling mode to the open sampling mode, the control module 14 controls the cleaning of the DIFF reaction cell, WBC reaction cell 131, and RBC reaction cell 132 in the reaction assembly 13, but does not clean the SAA reaction cell and CRP reaction cell. Therefore, the amount of cleaning solution (e.g., diluent) used can be reduced, thereby reducing costs.

[0088] In one embodiment, when the mode selection module 11 switches from automatic sample introduction mode to open sample introduction mode, the control module 14 uses a first cleaning mode to clean some of the reaction chambers in the multiple reaction chambers. For example, the control module 14 uses the first cleaning mode to clean the WBC reaction chamber 131 and RBC reaction chamber 132 of the reaction assembly 13, so as to perform enhanced cleaning on some reaction chambers and reduce the probability of malfunction of the blood analyzer 10. When the mode selection module 11 switches from automatic sample introduction mode to open sample introduction mode, the control module 14 uses a second cleaning mode to clean the remaining reaction chambers in the multiple reaction chambers. For example, the control module 14 uses the second cleaning mode to clean specific protein reaction chambers (such as CRP reaction chambers and SAA reaction chambers).

[0089] Specifically, the control module 14 obtains that the detection mode of the blood analyzer 10 in the automatic sampling mode is the specific protein individual detection mode. When the mode selection module 11 switches the automatic sampling mode to the open sampling mode, the control module 14 uses the first cleaning mode to clean the WBC reaction cell 131 of the reaction component 13.

[0090] Please see Figure 3 As shown, Figure 3 This is a flowchart illustrating a second embodiment of the detection method for the blood analyzer of this application. The detection method of this embodiment includes the following steps:

[0091] S301: The blood analyzer 10 has multiple detection modes, including a specific protein detection mode and a blood routine test mode.

[0092] The blood analyzer 10 has multiple detection modes, including a specific protein detection mode and a blood routine test mode. The specific protein detection mode can be either the SAA detection mode or the CRP detection mode.

[0093] S302: When the mode selection module 11 selects the automatic sample injection mode and the specific protein individual detection mode, the control module 14 controls the specific protein detection module to perform detection.

[0094] When the automatic sample injection mode and the specific protein separate detection mode are selected in the mode selection module 11, the specific protein detection module in the blood analyzer 10 corresponding to the specific protein separate detection mode will perform the detection. That is, the control module 14 is used to control the specific protein detection module to perform the detection.

[0095] S303: When the control module 14 determines that the number of detections is an integer multiple of the preset number, the control module 14 uses the first cleaning mode to clean the WBC reaction tank 131 and / or the RBC reaction tank 132.

[0096] When the specific protein detection module performs detection, the control module 14 can count the number of detections performed by the specific protein detection module in the specific protein standalone detection mode to obtain the detection count of the specific protein detection module. The control module 14 is used to compare the detection count of the specific protein detection module with a preset number to determine whether the detection count is an integer multiple of the preset number. If yes, when the control module 14 determines that the detection count is an integer multiple of the preset number, the control module 14 uses the first cleaning mode to clean the WBC reaction tank 131 and / or the RBC reaction tank 132; if not, then proceed to step S304.

[0097] S304: When the control module 14 determines that the number of detections is not an integer multiple of the preset number, the control module 14 adopts the second cleaning mode to clean the WBC reaction tank 131 and / or the RBC reaction tank 132.

[0098] When the control module 14 is used to clean the WBC reaction chamber 131 and / or the RBC reaction chamber 132 in the second cleaning mode, the WBC reaction chamber 131 and / or the RBC reaction chamber 132 can be cleaned with diluent to avoid cross-contamination of multiple whole blood samples in the WBC reaction chamber 131 and / or the RBC reaction chamber 132.

[0099] In this embodiment, when the blood analyzer 10 is in the specific protein detection mode, and the number of detections by the specific protein detection module 12 is an integer multiple of the preset number, the control module 14 is used to clean the WBC reaction chamber 131 and / or the RBC reaction chamber 132 using the first cleaning mode. This can remove blockages from the WBC reaction chamber 131 and / or the RBC reaction chamber 132, thereby preventing blockages and improving the detection accuracy of the blood analyzer 10.

[0100] In step S303, the preset number of detections is 1. When the control module 14 determines that the number of detections is an integer multiple of the preset number, the control module 14 uses the first cleaning mode to clean the WBC reaction chamber 131 and / or the RBC reaction chamber 132. Since any positive integer number of detections is an integer multiple of the preset number, the control module 14 uses the first cleaning mode to clean the WBC reaction chamber 131 and / or the RBC reaction chamber 132 after each detection is completed. That is, when the specific protein detection module 12 completes each detection, the control module 14 uses the first cleaning mode to clean the WBC reaction chamber 131 and / or the RBC reaction chamber 132.

[0101] In step S304, if the preset number of detections is greater than 1, and the control module 14 determines that the number of detections is not an integer multiple of the preset number, the control module 14 uses a second cleaning mode to clean the WBC reaction chamber 131 and / or the RBC reaction chamber 132. For example, if the preset number of detections is 3, and the control module 14 counts 2 detections by the specific protein detection module 12, then the control module 14 determines that the number of detections is not an integer multiple of the preset number, and uses the second cleaning mode to clean the WBC reaction chamber 131 and / or the RBC reaction chamber 132.

[0102] S305: When the mode selection module 11 switches the detection mode of a specific protein to the detection mode of routine blood test, the control module 14 uses the first cleaning mode to clean the WBC reaction chamber 131 and / or the RBC reaction chamber 132.

[0103] For example, if the mode selection module 11 switches the CRP standalone detection mode to the blood routine detection mode, the control module 14 will use the first cleaning mode to clean the WBC reaction chamber 131 and / or the RBC reaction chamber 132 to remove blockages in the WBC reaction chamber 131 and / or the RBC reaction chamber 132.

[0104] In this embodiment, when the mode selection module 11 switches from a specific protein detection mode to a blood routine test mode, the control module 14 uses a first cleaning mode to clean the WBC reaction chamber 131 and / or the RBC reaction chamber 132. For example, when the mode selection module 11 switches from a CRP detection mode to a blood routine test mode, the control module 14 uses the first cleaning mode to clean the WBC reaction chamber 131 and / or the RBC reaction chamber 132 to remove any blockages.

[0105] Please see Figure 4 As shown, Figure 4 yes Figure 3 A flowchart illustrating step S302 of the first embodiment. Step S302 includes the following steps:

[0106] S401: The control module 14 controls the sampling component 12 of the blood analyzer 10 to draw whole blood samples and distribute the whole blood samples to the specific protein reaction pool of the specific protein detection module.

[0107] The control module 14 controls the sampling component 12 to move to the test tube to draw whole blood samples from the test tube; the control module 14 controls the sampling component 12 to move to the specific protein reaction pool to distribute the whole blood samples to the specific protein reaction pool; the control module 14 controls the sampling component 12 to perform cleaning.

[0108] S402: Control module 14 adds reagents to the reaction chamber of a specific protein and performs detection to obtain the detection results.

[0109] The control module 14 can control the sampling component 12 to draw reagents and inject them into the specific protein reaction chamber; the control module 14 can also control the sampling component 12 to perform cleaning. The whole blood sample and reagents in the specific protein reaction chamber are mixed and reacted, and the blood analyzer 10 detects the liquid in the specific protein reaction chamber to obtain the detection results, which include specific protein parameters.

[0110] S403: Control module 14 controls sampling component 12 to distribute whole blood samples to WBC reaction chamber 131 for dilution of whole blood samples.

[0111] The control module 14 can control the sampling component 12 to allocate the whole blood sample to the WBC reaction pool 131 when the whole blood sample is allocated to the specific protein reaction pool. The WBC reaction pool 131 is used to dilute the whole blood sample once to obtain the diluted sample of the WBC reaction pool 131.

[0112] S404: Control module 14 controls sampling component 12 to add diluted sample from WBC reaction cell 131 to RBC reaction cell 132 of routine blood test module to calculate HCT value.

[0113] After the sampling component 12 adds the diluted sample from the WBC reaction chamber 131 to the RBC reaction chamber 132, the RBC reaction chamber 132 performs a second dilution on the diluted sample, and the blood analyzer 10 detects the liquid in the RBC reaction chamber 132 to obtain the HCT value.

[0114] S405: Control module 14 corrects the detection results based on HCT values.

[0115] Among them, the control module 14 uses HCT value to correct the detection results so that the corrected detection results are more accurate.

[0116] Please see Figure 5 As shown, Figure 5 This is a flowchart illustrating a third embodiment of the detection method for the blood analyzer described in this application. The detection method of this embodiment includes the following steps:

[0117] S501: The blood analyzer 10 is equipped with an automatic sample injection mode and an open sample injection mode.

[0118] The blood analyzer 10 can be set to automatic sampling mode and open sampling mode through the mode selection module 11.

[0119] S502: When the mode selection module 11 switches the autosampler mode to the open sampler mode, the control module 14 controls the sampling component 12 and / or the reaction component 13 to be cleaned.

[0120] Specifically, the control module 14 controls the cleaning of the sampling component 12 and / or the reaction component 13; or, the control module 14 controls the cleaning of the sampling component 12; or, the control module 14 controls the cleaning of the reaction component 13; or, the control module 14 controls the cleaning of both the sampling component 12 and the reaction component 13. Therefore, the automatic cleaning of the blood analyzer 10 can prevent the accumulation of contaminants, improve the detection accuracy of the blood analyzer 10, and enhance the user experience.

[0121] Step S501 includes: the control module 14 further acquires the sample volume of the blood sample in the automatic sampling mode, that is, the sample volume of the blood sample of the blood analyzer 10 in the automatic sampling mode.

[0122] Step 502 includes: when the mode selection module 11 switches the automatic injection mode to the open injection mode, the control module 14 determines whether the sample volume has reached a preset threshold; if yes, that is, the sample volume has reached the preset threshold, the control module 14 uses the first cleaning mode to clean the sampling component 12 and / or the reaction component 13; if no, that is, the sample volume has not reached the preset threshold, the control module 14 uses the second cleaning mode to clean the sampling component 12 and / or the reaction component 13, wherein the cleaning intensity of the second cleaning mode is less than the cleaning intensity of the first cleaning mode.

[0123] In this embodiment, the control module 14 selects either the first cleaning mode or the second cleaning mode based on the sample volume to clean the sampling component 12 and / or the reaction component 13, thereby making the blood analyzer 10 intelligent and saving costs. When the sample volume reaches a preset threshold, the control module 14 adopts the first cleaning mode to perform enhanced cleaning on the sampling component 12 and / or the reaction component 13, which can reduce the probability of the blood analyzer malfunctioning.

[0124] In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and there may be other division methods in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed.

[0125] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0126] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0127] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural changes made based on the description and drawings of this application, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A blood analyzer, characterized in that, It includes a mode selection module, a control module, and a reaction component. The reaction component is used to test blood samples. The mode selection module is used to select one injection mode from multiple injection modes of the blood analyzer. The multiple injection modes include automatic injection mode and open injection mode. When the mode selection module switches the automatic sampling mode to the open sampling mode, the control module acquires the detection mode of the blood analyzer in the automatic sampling mode and controls the reaction cell in the reaction assembly corresponding to the detection mode to be cleaned. When the mode selection module switches the autosampler mode to the open sampler mode, the control module obtains that the detection mode of the blood analyzer in the autosampler mode is the specific protein separate detection mode. The WBC reaction cell of the reaction component serves as the dilution cell of the blood sample. Then, the first cleaning mode is used to clean the WBC reaction cell of the reaction component. The blood routine detection module of the blood analyzer includes the WBC reaction cell and the RBC reaction cell of the reaction component.

2. The blood analyzer according to claim 1, characterized in that, The reaction assembly includes multiple reaction cells. When the mode selection module switches the automatic injection mode to the open injection mode, the control module uses a first cleaning mode to clean some of the multiple reaction cells.

3. The blood analyzer according to claim 2, characterized in that, When the mode selection module switches the automatic injection mode to the open injection mode, the control module uses the second cleaning mode to clean the remaining reaction cells in the plurality of reaction cells.

4. The blood analyzer according to claim 2, characterized in that, When the mode selection module switches the autosampler mode to the open sampler mode, if the control module obtains that the detection mode of the blood analyzer in the autosampler mode is a specific protein detection mode, then the first cleaning mode is used to clean the RBC reaction chamber of the reaction component.

5. The blood analyzer according to claim 1, characterized in that, The reaction assembly includes multiple reaction cells; when the mode selection module switches the automatic injection mode to the open injection mode, the control module controls the cleaning of the reaction cell corresponding to the detection mode, while the other reaction cells are not cleaned.

6. The blood analyzer according to any one of claims 1-5, characterized in that, The blood analyzer also includes a sampling component for distributing the collected blood sample to the reaction component. The control module acquires the detection mode of the blood analysis in the automatic sample introduction mode and controls the sampling component to perform cleaning.

7. The blood analyzer according to claim 6, characterized in that, The sampling component includes a sampling needle. The control module cleans the sampling needle through the sampling component and controls the sampling needle to draw in isolation air bubbles.

8. The blood analyzer according to claim 7, characterized in that, The detection mode is a specific protein detection mode. When the control module determines that the number of times the blood analyzer detects in the specific protein detection mode is an integer multiple of the preset number, the control module uses the first cleaning mode to clean the WBC reaction chamber and / or RBC reaction chamber of the reaction component.

9. A detection method for a blood analyzer, characterized in that, Applied to a blood analyzer as described in any one of claims 1-8, the blood routine detection module of the blood analyzer includes a WBC reaction cell and an RBC reaction cell of the reaction component, and the detection method includes: The blood analyzer is equipped with an automatic sampling mode and an open sampling mode; When the mode selection module switches the automatic sampling mode to the open sampling mode, the control module acquires the detection mode of the blood analyzer in the automatic sampling mode and controls the reaction cell in the reaction assembly corresponding to the detection mode to be cleaned. When the mode selection module switches the autosampler mode to the open sampler mode, the control module obtains that the detection mode of the blood analyzer in the autosampler mode is the specific protein separate detection mode, and the WBC reaction cell of the reaction component is used as the dilution cell of the blood sample. Then, the first cleaning mode is used to clean the WBC reaction cell of the reaction component.

10. The detection method according to claim 9, characterized in that, The reaction assembly includes multiple reaction tanks, and the step of controlling the cleaning of the reaction tank in the reaction assembly corresponding to the detection mode includes: When the mode selection module switches the automatic injection mode to the open injection mode, the control module uses a first cleaning mode to clean some of the multiple reaction cells, and uses a second cleaning mode to clean the remaining reaction cells.

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