Blood analyzer and control method

Abstract

The embodiment of the application discloses a blood analyzer and a control method, wherein the blood analyzer comprises a sample feeding mechanism, a sample taking mechanism, a mixing mechanism, a transfer mechanism, a sample sucking mechanism, a reaction mechanism and a controller. The sample feeding mechanism, the sample taking mechanism, the mixing mechanism, the transfer mechanism and the sample sucking mechanism of the blood analyzer are sequentially matched by the controller. When the blood analyzer works, at least two different blood samples perform the mixing operation. When one of the mixed blood samples performs other subsequent operations, the other sample can continue to mix in time, so that the time difference existing in different stages of the detection process is fully utilized, the time of batch sample detection is saved, and the detection efficiency of the blood sample is improved.

Description

Technical Field

[0001] This application relates to the field of medical devices, and more particularly to a blood analyzer and its control method. Background Technology

[0002] The existing blood analyzer operates as follows: the transfer mechanism picks up a test tube containing a blood sample from the sample injection mechanism and transfers it to the mixing mechanism for mixing. During the mixing process, the aspiration mechanism needs to stand for a period of time. After the mixing mechanism completes the mixing, the transfer mechanism moves the test tube to the aspiration position. The aspiration mechanism then draws the blood sample from the test tube at the aspiration position and transfers it to the reaction mechanism for reaction. During the aspiration process, the mixing mechanism needs to stand for a period of time. After the aspiration mechanism completes the blood sample separation, the transfer mechanism returns the test tube to the sample injection mechanism.

[0003] Therefore, existing blood analyzers waste time during the blood sample testing process, resulting in long testing times and low efficiency. Summary of the Invention

[0004] The main objective of this application is to provide a blood analyzer and control method, which aims to improve the detection efficiency of the blood analyzer.

[0005] In a first aspect, embodiments of this application provide a blood analyzer, including a sample injection mechanism, a transfer mechanism, a mixing mechanism, a transfer mechanism, a sample aspiration mechanism, a reaction mechanism, and a controller. The mixing mechanism has a first mixing position and a second mixing position, and the transfer mechanism has a placement position for placing test tubes. The controller is used for:

[0006] The control transfer mechanism places the first test tube, which is carried by the sample injection mechanism, into the first mixing position and the second test tube into the second mixing position, and controls the mixing mechanism to start so as to mix the first test tube in the first mixing position and the second test tube in the second mixing position.

[0007] After the first test tube in the first mixing position is mixed, the control transfer mechanism performs a first transfer operation on the first test tube in the first mixing position. The first transfer operation includes transferring the first test tube placed in the first mixing position from the mixing mechanism to the placement position of the transfer mechanism, and transferring the third test tube containing the blood sample from the injection mechanism located at the preset injection position to the first mixing position of the mixing mechanism to perform a mixing operation on the third test tube.

[0008] After the first test tube in the first transfer operation is transferred to the placement position, the control transfer mechanism transfers the first test tube in the placement position to the preset sampling position, and controls the sampling mechanism to distribute the blood sample in the first test tube in the sampling position to the reaction mechanism in the preset reaction position for mixing and reaction with reagents, and controls the transfer mechanism to perform the second transfer operation. The second transfer operation includes transferring the first test tube with the completed sample distribution from the transfer mechanism in the preset transfer position to the injection mechanism, transferring the second test tube in the first mixing position with the completed mixing to the placement position of the transfer mechanism, and transferring the fourth test tube containing the blood sample in the injection mechanism in the preset injection position to the second mixing position of the mixing mechanism to perform a mixing operation on the fourth test tube.

[0009] Furthermore, while the mixing mechanism is performing the mixing operation on the fourth test tube, the third test tube completes the mixing operation.

[0010] Secondly, embodiments of this application provide a control method applied to a blood analyzer. The blood analyzer includes a sample injection mechanism, a transfer mechanism, a mixing mechanism, a transfer mechanism, a sample aspiration mechanism, and a reaction mechanism. The mixing mechanism has a first mixing position and a second mixing position, and the transfer mechanism has a placement position for placing test tubes. The method includes:

[0011] The control transfer mechanism places the first test tube, which is carried by the sample injection mechanism, into the first mixing position and the second test tube into the second mixing position, and controls the mixing mechanism to start so as to mix the first test tube in the first mixing position and the second test tube in the second mixing position.

[0012] After the first test tube in the first mixing position is mixed, the control transfer mechanism performs a first transfer operation on the first test tube in the first mixing position. The first transfer operation includes transferring the first test tube placed in the first mixing position from the mixing mechanism to the placement position of the transfer mechanism, and transferring the third test tube containing the blood sample from the injection mechanism located at the preset injection position to the first mixing position of the mixing mechanism to perform a mixing operation on the third test tube.

[0013] After the first test tube in the first transfer operation is transferred to the placement position, the control transfer mechanism transfers the first test tube in the placement position to the preset sampling position, and controls the sampling mechanism to distribute the blood sample in the first test tube in the sampling position to the reaction mechanism in the preset reaction position for mixing and reaction with reagents. The control transfer mechanism performs a second transfer operation, which includes transferring the first test tube with the completed sample distribution from the transfer mechanism in the preset transfer position to the injection mechanism, transferring the second test tube in the first mixing position to the placement position of the transfer mechanism, and transferring the fourth test tube containing the blood sample in the injection mechanism in the preset injection position to the second mixing position of the mixing mechanism to perform a mixing operation on the fourth test tube. During the mixing operation of the mixing mechanism on the fourth test tube, the third test tube completes the mixing operation.

[0014] This application provides a blood analyzer and its control method. In the embodiments of this application, by controlling the orderly coordination of the blood analyzer's sample injection mechanism, transfer mechanism, mixing mechanism, transfer mechanism, and aspiration mechanism, at least two different blood samples are being mixed during operation of the blood analyzer. This allows the other sample to be added and mixed in a timely manner while one of the mixed blood samples is being used for other subsequent operations. This fully utilizes the time difference between different stages of the detection process, achieving full utilization or even seamless connection of the time sequence of different stages in the detection process, saving the detection time of batch samples, and improving the detection efficiency of blood samples.

[0015] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit the disclosure of the embodiments of this application. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic structural block diagram of a blood analyzer provided in an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the sampling mechanism of the blood analyzer provided in the embodiments of this application;

[0019] Figure 3 This is a schematic diagram showing the layout of the sample introduction mechanism, mixing mechanism, transfer mechanism, and reaction mechanism of a blood analyzer provided in the embodiments of this application;

[0020] Figure 4 This is a schematic diagram of the cap-removing mechanism of the blood analyzer provided in this embodiment of the application performing a cap-removing operation on the test tube;

[0021] Figure 5 This is a schematic diagram of the blood analyzer's aspiration mechanism performing a sample aspiration operation on the test tube, as provided in the embodiments of this application. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] The flowchart shown in the attached diagram is for illustrative purposes only and does not necessarily include all content and operations / steps, nor does it necessarily have to be performed in the order described. For example, some operations / steps can be broken down, combined, or partially merged, so the actual execution order may change depending on the actual situation.

[0025] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0026] Please refer to Figure 1 This application provides a blood analyzer 100, which is used to perform specific tests on blood samples. These specific tests include, but are not limited to, blood five-part differential, specific protein detection, and red blood cell osmotic fragility detection. For example, specific proteins include, but are not limited to, CRP (C-reactive protein) and SAA (serumamyloid A).

[0027] like Figure 1As shown, the blood analyzer 100 includes a sample introduction mechanism 10, a transfer mechanism 20, a mixing mechanism 30, a transfer mechanism 40, a suction mechanism 50, a reaction mechanism 60, and a controller 70. The sample introduction mechanism 10 provides the blood sample to be tested. The transfer mechanism 20 performs sample transfer or transport tasks; for example, the transfer mechanism 20 can grasp a test tube 801 containing the blood sample and move the test tube 801 in two-dimensional or three-dimensional space, thereby transferring the blood sample to be tested in two-dimensional or three-dimensional space. The mixing mechanism 30 performs sample mixing operations. The transfer mechanism 40 provides a temporary storage or transfer area for sample transfer or transport. The suction mechanism 50 quantitatively draws the sample from the test tube 801 containing the sample and transfers the drawn sample to a preset area or device, such as transferring the drawn sample to the reaction mechanism 60. The reaction mechanism 60 is used to provide a reaction site for blood samples and reagents so that the samples and reagents are mixed to form a test sample, also known as a test sample solution or reaction solution. For example, the reaction mechanism 60 is provided with a reaction section 601, which is used to provide a reaction site for the samples and / or reagents transferred by the aspiration mechanism 50 so that the samples and reagents in the corresponding reaction section are mixed to form a test sample solution.

[0028] Specifically, the sample introduction mechanism 10 is provided with a sample carrying component and a sample introduction drive component for driving the sample carrying component to move. After the test tube 801 containing the blood sample is placed in the sample carrying component, the sample introduction drive component provides the test tube 801 containing the blood sample to the corresponding sample introduction position of the blood analyzer 100 so that the blood analyzer 100 can perform the next operation on the blood sample.

[0029] The mixing mechanism 30 is used to mix the blood sample to be tested. For example, the mixing mechanism 30 is provided with at least one mixing position 301. After the test tube 801 containing the blood sample is placed in the mixing position 301, the mixing mechanism 30 mixes the blood sample in the test tube 801 by means of mechanical vibration or mechanical stirring.

[0030] It is understood that in some embodiments, the mixing position 301 includes at least a first mixing position 3011 and a second mixing position 3012, wherein the first mixing position 3011 and the second mixing position 3012 can mix the same blood sample or different blood samples, such as... Figure 3 As shown.

[0031] For example, there are multiple types of test tubes 801. Venous blood is carried in the first type of test tube, and peripheral blood is carried in the second type of test tube. The first mixing position 3011 is used to mix the first type of test tube 801, and the second mixing position is used to mix the second type of test tube. Alternatively, both the first mixing position 3011 and the second mixing position 3012 can mix the first type of test tube and the second type of test tube.

[0032] Optionally, the mixing mechanism 30 includes a first venous blood test tube mixing component and a first peripheral blood test tube mixing component disposed corresponding to the first mixing position 3011, and a second venous blood mixing component and a second peripheral blood test tube mixing component disposed corresponding to the second mixing position 3012. For example, the first venous blood test tube mixing component and the second venous blood test tube mixing component are used to mix the first type of test tube containing venous blood, and the first peripheral blood test tube mixing component and the second peripheral blood test tube mixing component are used to mix the second type of test tube containing peripheral blood.

[0033] The transfer mechanism 40 is provided with at least one placement position 401 for placing test tubes 801 to facilitate the transfer of test tubes 801 containing blood samples between different work areas. For example, after the transfer mechanism 20 places the mixed test tube 801 into the placement position 401, the transfer mechanism 40 can transfer the test tube 801 to a preset aspiration position so that the aspiration mechanism 50 can perform the corresponding operation on the test tube 801 located at the aspiration position.

[0034] The sampling mechanism 50 includes a sampling needle 501, a drive assembly 502, and a sampling drive unit 503. The drive assembly 502 supports the sampling needle 501 and drives the sampling needle 501 to move. For example, the sampling needle 501 can move in two or three dimensions in space via the two-dimensional or three-dimensional drive assembly 502, so that the sampling needle 501 can move to aspirate the sample carried by the sample introduction mechanism 10 and / or the reagent supplied by the reagent supply device (not shown).

[0035] The sampling drive unit 503 is used to quantitatively aspirate samples through the sampling needle 501. For example, the sampling needle 501 moves to the test tube 801 containing the blood sample on the sample injection mechanism 10 under the drive of the drive assembly 502, and aspirates the blood sample to be tested under the drive of the sampling drive unit 503. The blood sample to be tested is then transported to the reaction unit 601 of the reaction mechanism 60. The blood sample to be tested aspirated by the sampling mechanism 50 is mixed with the reagent provided by the reagent supply device 20 in the reaction unit 601 to prepare the test sample, also known as the test sample solution.

[0036] In some embodiments, the sampling drive unit 503 includes a tubing 5031 and a power assembly 5033. The tubing 5031 is used to transport a fluid medium. One end of the tubing 5031 is connected to the sampling needle 501, and the other end is connected to the power assembly 5033, so that the flow direction of the fluid medium in the tubing 5031 can be changed under the action of the power assembly 5033, so that the sampling needle 501 can transfer samples and / or reagents.

[0037] It is understandable that, depending on the different bodily fluids being tested and the different test items, there are different ways to add samples and reagents. For example, both samples and reagents can be added using the aspiration needle 501, or the sample can be added using the aspiration needle 501 and the reagent can be added using the reagent needle, or only the sample can be added using the aspiration needle 501 and the reagent can be added using other methods, such as adding the reagent to the reaction mechanism 60 by connecting the reagent container to the reagent container through a special tubing.

[0038] In some embodiments, the blood analyzer 100 further includes a detection device (not shown) for detecting the sample solution to be tested in the reaction section to obtain corresponding detection results. Exemplarily, the sample solution to be tested includes at least one of a specific protein detection solution and a complete blood count (CBC) test solution, and a red blood cell osmotic fragility detection solution. The detection device performs specific protein detection on the specific protein detection solution in the reaction section 601 and / or CBC test on the CBC test solution, and performs CBC osmotic fragility detection on the CBC test solution in the reaction section 601. That is, when the detection device performs specific protein detection on the specific protein detection solution in the reaction section 601, it can obtain the specific protein detection result of the sample to be tested; when the detection device performs CBC test on the CBC test solution in the reaction section 601, it can obtain the CBC test result of the sample to be tested; and when the detection device performs CBC osmotic fragility detection on the CBC test solution in the reaction section 601, it can obtain the CBC osmotic fragility detection result of the sample to be tested.

[0039] Please see Figure 2 In some embodiments, the blood analyzer 100 also includes a reagent supply mechanism (not shown) for providing reagents that react with the blood sample to be tested, including but not limited to diluents, hemolysins, latex reagents, and red blood cell osmotic fragility reagents.

[0040] In some embodiments, the blood analyzer 100 also includes a refrigeration device (not shown) for refrigerating reagents, including but not limited to at least one of a specific protein reagent and a red blood cell osmotic fragility reagent.

[0041] For example, specific protein reagents include hemolysins and latex reagents. It should be understood that the temperature of latex reagents needs to be stabilized at a specific value to ensure that the activity of the reagent is maintained. Therefore, specific protein reagents need to be stored in a refrigerated device at times other than when aspirating and dispensing latex reagents.

[0042] Meanwhile, in order to make full use of the space in the refrigeration unit, some of the red blood cell permeability reagents are placed inside the refrigeration unit to reduce the volume of the blood analyzer.

[0043] In some embodiments, the blood analyzer 100 further includes a cleaning device for cleaning target devices, including but not limited to the sampling needle 501 and the reaction unit 601.

[0044] In some embodiments, the controller 70 includes at least a processor 701, a memory 702, a communication interface (not shown), and an I / O interface (not shown). The processor 701, memory 702, communication interface, and I / O interface communicate via a bus. The processor 701 may be a Central Processing Unit (CPU), but it can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0045] The memory 702 contains various computer programs, such as the operating system and application programs, for the processor 701 to execute, as well as the data required to execute these programs. During the detection and analysis process of a specific test item or the control process of the blood analyzer, any data requiring local storage can be stored in the memory 702. The I / O interface includes, but is not limited to, serial interfaces such as USB, IEEE 394, or RS-232C; parallel interfaces such as SCSI, IDE, or IE84; and analog signal interfaces composed of D / A converters and converters. Input devices are connected to the I / O interface, allowing users to directly input data to the controller 70. These input devices include, but are not limited to, keyboards, mice, touchscreens, or control buttons. A display device can communicate with the controller 70 through the I / O interface to provide relevant information prompts. The communication interface can be any known communication protocol. The communication interface communicates with the outside world via a network, and the controller 70 can transmit data with any device connected through this network using a preset communication protocol.

[0046] In some implementations, the controller 70 is used to:

[0047] The first test tube, which is carried on the injection mechanism 10, is placed in the first mixing position 3011, and the second test tube is placed in the second mixing position 3012. The mixing mechanism 30 is then activated to mix the first test tube in the first mixing position 3011 and the second test tube in the second mixing position 3012.

[0048] After the first test tube in the first mixing position 3011 is mixed, the control transfer mechanism 20 performs a first transfer operation on the first test tube in the first mixing position 3011. The first transfer operation includes transferring the first test tube placed in the first mixing position 3011 from the mixing mechanism 30 to the placement position 401 of the transfer mechanism 40, and transferring the third test tube containing the blood sample from the injection mechanism 10 located in the preset injection position 101 to the first mixing position 3011 of the mixing mechanism 30 to perform a mixing operation on the third test tube.

[0049] After the first test tube in the first transfer operation is transferred to the placement position 401, the transfer mechanism 40 is controlled to transfer the first test tube in the placement position 401 to the preset sampling position, and the sampling mechanism 50 is controlled to distribute the blood sample in the first test tube in the sampling position to the reaction mechanism 60 in the preset reaction position 601 for mixing and reaction with reagents. The transfer mechanism 20 is controlled to perform the second transfer operation. The second transfer operation includes transferring the first test tube with the completed sample distribution from the transfer mechanism 40 in the preset transfer position 402 to the injection mechanism 10, and transferring the second test tube in the first mixing position 3011 to the placement position 401 of the transfer mechanism 40. The injection mechanism 10 in the preset injection position 101 transfers the fourth test tube containing the blood sample to the second mixing position 3012 of the mixing mechanism 30 to perform a mixing operation on the fourth test tube. During the mixing operation of the mixing mechanism 30 on the fourth test tube, the third test tube completes the mixing operation.

[0050] Please see Figure 1 and Figure 3 For example, in order to facilitate the differentiation of different test tubes 80, the embodiments of this application are described using the first test tube, the second test tube, the third test tube, and the fourth test tube.

[0051] Before performing a specific test, the blood analyzer 100 places the test tube containing the blood sample to be tested into the corresponding test tube rack 80 and places the test tube rack 80 into the sample injection mechanism 10. When the blood analyzer 100 performs a specific test, the sample injection mechanism 10 moves the corresponding test tube rack 80, thereby moving the test tube 80 carried by the test tube rack 80 to the preset sample injection position 101.

[0052] After the test tube 801 containing the blood sample to be tested reaches the injection position 101, the controller 70 controls the transfer mechanism 20 to place the first test tube carried by the injection mechanism 10 into the first mixing position 3011 and the second test tube into the second mixing position 3012, and controls the mixing mechanism 30 to start to mix the first test tube in the first mixing position 3011 and the second test tube in the second mixing position 3012.

[0053] It is understood that the mixing mechanism 30 can start the mixing operation simultaneously for the first test tube placed in the first mixing position 3011 and the test tube placed in the second mixing position 3012, or it can start the mixing operation separately and sequentially as needed, without any limitation.

[0054] After the first test tube in the first mixing position 3011 is mixed, the control transfer mechanism 20 performs a first transfer operation on the first test tube in the first mixing position 3011. For example, the control transfer mechanism 20 transfers the first test tube placed in the first mixing position 3011 from the mixing mechanism 30 to the placement position 401 of the transfer mechanism 40. Then, the control injection mechanism 10 transfers the test tube containing the blood sample to be tested to the preset injection position 101, and the control transfer mechanism 20 transfers the third test tube containing the blood sample from the injection mechanism 10 located at the preset injection position to the first mixing position 3011 of the mixing mechanism 30, so that the mixing mechanism 30 can perform a mixing operation on the third test tube, thereby ensuring that the mixing mechanism 30 operates fully.

[0055] After the first test tube is transferred to the placement position 401 in the first transfer operation, the control transfer mechanism 40 transfers the first test tube located at the placement position 401 to the preset sampling position 505, and controls the sampling mechanism 50 to distribute the blood sample in the first test tube located at the sampling position 505 to the reaction mechanism 60 located at the preset reaction position 602 for mixing and reaction with reagents. For example, the reaction part 601 of the reaction mechanism 60 is set at the corresponding reaction position. Different reaction parts 601 may carry different reagents, so that different reaction parts 601 form different test samples after mixing with blood samples for different tests.

[0056] Since a certain reaction time is required when mixing reagents and blood samples, in order to make full use of this reaction gap, during the reaction process of blood samples and reagents in reaction section 601, the controller also controls transfer mechanism 20 to perform a second transfer operation. The second transfer operation includes transferring the first test tube with completed sample distribution from transfer mechanism 40 to injection mechanism 10, and transferring the second test tube with completed mixing at first mixing position 3011 to placement position 401 of transfer mechanism 40. The injection mechanism 10 located at the preset injection position transfers the fourth test tube containing blood sample to the second mixing position 3012 of mixing mechanism 30 to perform a mixing operation on the fourth test tube. For example, since the blood sample contained in the first test tube has been allocated to the reaction mechanism 60 for the preparation of the test sample, in order to facilitate the subsequent possible retesting and tracking of the sample contained in the first test tube, the transfer mechanism 40 is controlled to transfer the first test tube from the sampling position 505 to the preset transfer position 402, and the transfer mechanism 20 is controlled to transfer the test tube placed in the placement position 401 of the transfer mechanism 40 from the transfer position 402 to the original placement position of the first test tube in the sample injection mechanism 10.

[0057] At this time, the placement position 401 of the transfer mechanism 40 is vacant. Therefore, the control transfer mechanism 20 transfers the second test tube from the first mixing position 3011 to the placement position 401 of the transfer mechanism 40, and the injection mechanism 10 located at the preset injection position transfers the fourth test tube containing the blood sample to the second mixing position 3012 of the mixing mechanism 30 to perform a mixing operation on the fourth test tube. During the mixing operation of the mixing mechanism 30 on the fourth test tube, the third test tube completes the mixing operation, so that the blood sample in the third test tube that has completed the mixing operation can be used for subsequent sample preparation operations.

[0058] It is understood that the blood analyzer provided in this application requires sequential operations such as sample mixing, sample transfer after mixing, sample distribution after mixing, and test tube retrieval when testing blood samples in each test tube. In the embodiment of this application, by utilizing the cooperation of the sample injection mechanism 10, the transfer mechanism 20, the mixing mechanism 30, the transfer mechanism 40, and the aspiration mechanism 50, the blood analyzer can perform mixing operations on at least two different blood samples during operation. This allows for timely addition of another blood sample to continue mixing when one of the mixed blood samples is being used for other subsequent operations. This fully utilizes the time difference between different stages in the detection process, achieving full utilization or even seamless connection of the time sequence of different stages in the detection process, saving the detection time of batch samples, and improving the detection efficiency of blood samples.

[0059] In some embodiments, after the second test tube has completed the mixing operation, the controller 70 is further configured to: control the transfer mechanism 20 to transfer the third test tube that has completed the mixing operation to the placement position 401 of the transfer mechanism 40, control the transfer mechanism 40 to transfer the third test tube located at the placement position 401 to the sampling position 505, and control the sampling mechanism 50 to distribute the blood sample in the third test tube located at the sampling position to the reaction mechanism 60 for mixing and reaction with the reagents.

[0060] For example, after the mixing operation is completed in the second test tube, the blood analyzer 100 can prepare the blood sample in the second test tube for sample preparation. That is, the transfer mechanism 20 is controlled to transfer the third test tube after the mixing operation is completed to the placement position 401 of the transfer mechanism 40, and the transfer mechanism 40 is controlled to transfer the third test tube located at the placement position 401 to the sampling position 505, and the sampling mechanism 50 is controlled to distribute the blood sample in the third test tube located at the sampling position to the reaction mechanism 60 for mixing and reaction with the reagent, so that the blood sample and the reagent react in the corresponding reaction section 601 of the reaction mechanism 60 to form the corresponding test sample.

[0061] For example, a blood sample may be mixed with a corresponding reagent in one reaction section 601 to form a routine blood test solution, a blood sample may be mixed with a corresponding reagent in another reaction section 601 to form a specific protein test solution, and a blood sample may be mixed with a reagent in yet another reaction section 601 to form a red blood cell osmotic fragility test solution, etc. There are no restrictions on this.

[0062] The reagents in the corresponding reaction section 601 can be added via a pipe connected to a corresponding reagent supply device, or via a reagent dispensing mechanism. It is understood that this reagent dispensing mechanism has the same structure as the sampling mechanism 50; for example, the reagent dispensing mechanism includes a reagent needle, a drive assembly, and a reagent drive unit. The drive assembly supports the reagent needle and drives its movement. For example, the reagent needle moves in two or three dimensions in space via the two-dimensional or three-dimensional drive assembly, thereby allowing the reagent needle to draw reagents supplied by the reagent supply device (not shown).

[0063] In some embodiments, the blood analyzer further includes a cap removal mechanism 90, and the controller 70, during the process of controlling the transfer mechanism 40 to transfer the first test tube located in the placement position to the preset sampling position 505, includes:

[0064] The control transfer mechanism 40 transfers the first test tube located in the placement position 401 to the preset cap removal position 901, and controls the cap removal mechanism 90 to perform a preset cap removal operation on the first test tube located in the cap removal position 901.

[0065] After the cap removal operation is completed, the control transfer mechanism 40 transfers the first test tube located at the cap removal position 901 to the preset sample aspiration position 505.

[0066] Please see Figure 4 For example, in some cases, the opening of the test tube 801 containing the blood sample is usually sealed with a cap. If the cap is not removed from the test tube 801, multiple punctures may be required when the aspiration mechanism 50 performs the aspiration operation to balance the air pressure inside the test tube with the external air pressure during aspiration, thereby facilitating aspiration. Therefore, the aspiration operation is cumbersome and time-consuming.

[0067] This embodiment uses test tube 801 as an example to illustrate the process. When performing the cap removal operation on the first test tube, the transfer mechanism 40 is first controlled to move the first test tube located at the placement position 401 to the preset cap removal position 901. The cap removal mechanism 90 is then controlled to move downwards and grasp the cap sealing the first test tube, removing the cap from the first test tube, thereby opening the first test tube and completing the cap removal operation. After the cap removal operation is completed, the transfer mechanism 40 is controlled to move the first test tube located at the cap removal position 901 to the preset sampling position 505, so that the sampling mechanism 50 performs a sampling operation on the first test tube at the sampling position 505.

[0068] In some embodiments, the controller 70, during the process of controlling the sampling mechanism 50 to dispense the blood sample from the first test tube located at the sampling position 505 to the reaction mechanism 60 located at the preset reaction position 602 for mixing and reaction with reagents, includes:

[0069] The sampling mechanism 50 is moved to the sampling position 505 and the blood sample in the first test tube located at the sampling position is drawn.

[0070] After the blood sample in the first test tube is aspirated, the aspiration mechanism 50 controls the blood sample to be analyzed in the reaction mechanism 60 located at the preset reaction position 602, so as to mix with the reagent in the reaction mechanism 60.

[0071] Please see Figure 5 For example, after the transfer mechanism 40 transfers the test tube 801 located at the placement position 401 to the sampling position 505, the controller 70 controls the sampling needle 501 of the sampling mechanism 50 to move to the sampling position 505 and move downwards towards the test tube 801. During or before the downward movement of the sampling needle 501, the sampling drive unit 503 of the sampling mechanism 50 is activated to quantitatively draw the blood sample carried in the test tube 801 through the sampling needle 501. After the blood sample is drawn, the blood sample is distributed to the corresponding reaction unit 601 of the reaction mechanism 60, so that the blood sample reacts with the reagents in the reaction unit 601 to form the corresponding test sample. It can be understood that the test tube 801 includes, but is not limited to, the first test tube, and can also be a second, third, or fourth test tube that has been mixed and transferred to the sampling position.

[0072] In some embodiments, the blood analyzer further includes a test tube testing mechanism, a first mixing position including a first venous blood test tube mixing component and a first capillary blood test tube mixing component, and a second mixing position including a second venous blood mixing component and a second capillary blood test tube mixing component. The controller 70, during the process of transferring a third test tube containing a blood sample from the sample injection mechanism 10 located at the preset sample injection position 101 to the first mixing position 3011 of the mixing mechanism 30, includes:

[0073] The third test tube containing the blood sample is transferred from the injection mechanism 10 located at the preset injection position 101 to the test tube testing mechanism, and the test tube type of the third test tube is obtained according to the testing information of the test tube testing mechanism.

[0074] According to the test tube type, the third test tube is transferred to the corresponding mixing component of the first mixing position 3011;

[0075] And / or, during the process of the controller transferring a fourth test tube containing a blood sample from the injection mechanism 10 located at the preset injection position 101 to the second mixing position 3012 of the mixing mechanism 30, the following are included:

[0076] The fourth test tube containing the blood sample is transferred from the injection mechanism 10 located at the preset injection position 101 to the test tube testing mechanism, and the test tube type of the fourth test tube is obtained according to the testing information of the test tube testing mechanism.

[0077] According to the test tube type, the fourth test tube is transferred to the corresponding mixing component of the second mixing position.

[0078] Specifically, blood samples include capillary blood samples and venous blood samples. To improve the accuracy of blood sample analysis, different types of test tubes are used to hold different blood samples; for example, venous blood is held in type I test tubes, and capillary blood is held in type II test tubes. Furthermore, to ensure proper mixing of blood samples, different mixing mechanisms are used for different blood samples; for example, venous blood is mixed using a venous blood test tube mixing assembly, and capillary blood is mixed using a capillary blood test tube mixing assembly.

[0079] To ensure that different types of blood samples can be mixed at each mixing position, a first venous blood tube mixing component and a first peripheral blood tube mixing component are provided at the first mixing position, and a second venous blood mixing component and a second peripheral blood tube mixing component are provided at the second mixing position.

[0080] For example, before mixing the test tube 801, the test tube 801 containing the blood sample is transferred from the injection mechanism 10 located at the preset injection position 101 to the test tube detection mechanism, and the test tube type of the test tube 801 is obtained according to the detection information of the test tube detection mechanism; the test tube 801 is then transferred to the corresponding mixing component of the first mixing position according to the test tube type.

[0081] For example, when the test tube 801 to be placed in the first mixing position 3011 is a venous blood test tube, that is, a first type of test tube, the test tube 801 is transferred to the venous blood test tube mixing component corresponding to the first mixing position 3011 for mixing. When the test tube 801 is a peripheral blood test tube, that is, a second type of test tube, the test tube 801 is transferred to the peripheral blood test tube mixing component corresponding to the first mixing position 3011 for mixing.

[0082] When the test tube 801 to be placed in the second mixing position 3012 is a venous blood test tube, that is, a first-class test tube, the test tube 801 is transferred to the venous blood test tube mixing component corresponding to the second mixing position 3012 for mixing. When the test tube 801 is a peripheral blood test tube, that is, a second-class test tube, the test tube 801 is transferred to the peripheral blood test tube mixing component corresponding to the second mixing position 3012 for mixing.

[0083] Among them, test tube 801 can be the first test tube, the second test tube, the third test tube or the fourth test tube to be mixed, and there is no restriction.

[0084] It is understood that the test tube testing mechanism includes an inductive sensor used to detect test tubes with and without metal parts to identify the test tube type. For example, type I test tubes are used to hold venous blood samples, and type II test tubes are used to hold capillary blood samples. Type I test tubes are covered with aluminum foil, while type II test tubes are not. When type I and type II test tubes pass through the inductive sensor, the signals detected by the inductive sensor will differ. The difference in signals detected by the inductive sensor can distinguish the test tube type 801.

[0085] It should be noted that the detection of the test tube 801 type is not limited to the inductive sensor method described above. For example, in some other embodiments, the blood analyzer 100 includes a capacitive sensor for detecting the sample position or sample volume to detect the test tube 801 type.

[0086] The method for detecting sample volume is as follows: Typically, the amount of venous blood sample loaded in the venous blood tube 801 is greater than the amount of capillary blood sample loaded in the capillary blood tube 801, resulting in different heights of the blood sample within the tubes 801. During detection, the transfer mechanism 20 transfers the tube 801 downwards along the axial direction of the tube 801 within the detection range of the capacitance sensor. The duration of the change in capacitance value detected by the capacitance sensor determines whether the tube 801 is a venous blood tube 801 or a capillary blood tube 801.

[0087] The method for detecting the sample location is as follows: Typically, the blood sample container for venous blood is located at the bottom, while the blood sample container for capillary blood (test tube 801) is typically located in the middle. During detection, the transfer mechanism 20 moves the test tube 801 laterally, ensuring that the bottom or middle of the test tube 801 enters the detection range of the capacitance sensor. The location of the blood sample is determined by the capacitance change detected by the capacitance sensor, thus identifying whether the test tube 801 is a venous blood test tube or a capillary blood test tube.

[0088] In some embodiments, when the blood analyzer 100 is in the reset state, the line connecting the first mixing position 3011, the second mixing position 3012, and the placement position 401 extends in a first direction; the line connecting the placement position 401 and the sampling position 505 extends in a second direction, and the first and second directions are perpendicular and intersect.

[0089] Alternatively, in the reset state of the blood analyzer, the line connecting the first mixing position 3011, the second mixing position 3012, and the placement position 401 extends in the first direction; the line connecting the placement position 401 and the sampling position 505 extends in the second direction, the first direction and the second direction are perpendicular and intersect; the line connecting the sampling position 505 and the reaction position extends in the first direction, and the line connecting the sampling position 505 and the reaction position is spaced apart from the line connecting the first mixing position 3011, the second mixing position 3012, and the placement position 401.

[0090] Please see Figure 3 When the blood analyzer 100 is in the reset state, the placement position 401 overlaps with the transfer position 402. The line connecting the first mixing position 3011, the second mixing position 3012 and the placement position 401 extends in the first direction, and the line connecting the placement position 401 and the sampling position 505 extends in the second direction. For example, the direction where the Y-axis is located is the first direction, and the direction where the X-axis is located is the second direction.

[0091] By arranging the first mixing position 3011, the second mixing position 3012, and the placement position 401 in a straight line, and / or extending the line connecting the placement position 401 and the sampling position 505 in the second direction, the displacement formation of the transfer mechanism 20 can be effectively saved, and the transfer efficiency of the transfer mechanism 20 to the test tube 801 can be improved.

[0092] Optionally, the injection position 101 is located on the line connecting the first mixing position 3011, the second mixing position 3012, and the placement position 401.

[0093] In some embodiments, the placement position 401 includes at least two, and the at least two placement positions 401 are arranged along the first direction; or, the placement position 401 includes at least two, the transfer mechanism 40 includes at least two, the at least two placement positions 401 are arranged along the first direction, and the two different placement positions 401 are respectively disposed on two different transfer mechanisms 40.

[0094] For example, there are at least two placement positions 401, which can effectively improve the transfer capacity of the transfer mechanism 40. That is, it can carry two test tubes at the same time to realize the transfer of two test tubes and provide more transfer time for other operations of the blood analyzer.

[0095] Furthermore, the two placement positions 401 are arranged along the first direction, so that whenever the transfer mechanism 40 moves to the same position, the transfer mechanism 20 can schedule the test tubes on the two transfer positions.

[0096] In some embodiments, the controller 70 is also used to control the transfer mechanism 20 to perform different transfer operations on test tubes 80 at different placement positions 401 on the transfer mechanism 40.

[0097] For example, when there are at least two placement positions 401 on the transfer mechanism 40, the blood samples in the test tubes held on different placement positions are in different states. For example, one test tube may be in a state of waiting to be mixed, while another test tube may be in a state of waiting for the sampling mechanism 50 to perform sampling, or in a state of waiting for the transfer mechanism 20 to return the test tube after sample collection to the sample injection mechanism 10. By controlling the transfer mechanism 20 to perform different operations on the test tubes 801 on different placement positions 401, different test tubes can be in different process states during the blood analysis process, thereby effectively improving the efficiency of blood analysis.

[0098] For example, taking the transfer mechanism 40 as an example with a first placement position and a second placement position, after the transfer mechanism 20 places the test tube into the first placement position on the transfer mechanism 40, it can simultaneously place the test tube that has been sampled in the first placement position into the sample injection mechanism 10.

[0099] The control method provided in the embodiments of this application will be explained below in conjunction with the working principle of the blood analyzer 100.

[0100] This application also provides a control method applied to the blood analyzer 100 as provided in any embodiment of this application. The control method provided by this application specifically includes:

[0101] The control transfer mechanism places the first test tube, which is carried by the sample injection mechanism, into the first mixing position and the second test tube into the second mixing position, and controls the mixing mechanism to start so as to mix the first test tube located in the first mixing position and the second test tube located in the second mixing position.

[0102] After the first test tube in the first mixing position is mixed, the transfer mechanism is controlled to perform a first transfer operation on the first test tube in the first mixing position. The first transfer operation includes transferring the first test tube placed in the first mixing position from the mixing mechanism to the placement position of the transfer mechanism, and transferring the third test tube containing the blood sample from the injection mechanism located at the preset injection position to the first mixing position of the mixing mechanism, so as to perform a mixing operation on the third test tube.

[0103] After the first test tube in the first transfer operation is transferred to the placement position, the transfer mechanism is controlled to transfer the first test tube located at the placement position to the preset sampling position, and the sampling mechanism is controlled to distribute the blood sample in the first test tube located at the sampling position to the reaction mechanism located at the preset reaction position for mixing and reaction with reagents, and the transfer mechanism is controlled to perform a second transfer operation. The second transfer operation includes transferring the first test tube with the completed sample distribution from the transfer mechanism located at the preset transfer position to the injection mechanism, transferring the second test tube with the completed mixing at the first mixing position to the placement position of the transfer mechanism, and transferring the fourth test tube containing the blood sample from the injection mechanism located at the preset injection position to the second mixing position of the mixing mechanism to perform a mixing operation on the fourth test tube.

[0104] Furthermore, during the mixing process of the mixing mechanism on the fourth test tube, the third test tube completes the mixing operation.

[0105] In some embodiments, the blood analyzer further includes a cap removal mechanism, wherein controlling the transfer mechanism to transfer the first test tube located at the placement position to a preset sampling position includes:

[0106] The transfer mechanism is controlled to move the first test tube located in the placement position to a preset cap removal position, and the cap removal mechanism is controlled to perform a preset cap removal operation on the first test tube located in the cap removal position.

[0107] After the cap removal operation is completed, the transfer mechanism is controlled to transfer the first test tube located at the cap removal position to the preset sampling position.

[0108] In some embodiments, controlling the sampling mechanism to dispense the blood sample in the first test tube located at the sampling position to the reaction mechanism located at a preset reaction position for mixing and reaction with reagents includes:

[0109] Control the sampling mechanism to move to the sampling position and draw blood sample from the first test tube located at the sampling position;

[0110] After the blood sample in the first test tube is aspirated, the aspiration mechanism is controlled to analyze the blood sample to the reaction mechanism located at the preset reaction position, so as to mix it with the reagent in the reaction mechanism.

[0111] In some embodiments, the blood analyzer further includes a test tube detection mechanism, wherein the first mixing position is provided with a first venous blood test tube mixing component and a first capillary blood test tube mixing component, and the second mixing position is provided with a second venous blood mixing component and a second capillary blood test tube mixing component. The step of transferring a third test tube containing a blood sample from the injection mechanism located at a preset injection position to the first mixing position of the mixing mechanism includes:

[0112] The third test tube containing the blood sample is transferred from the injection mechanism located at the preset injection position to the test tube detection mechanism, and the test tube type of the third test tube is obtained according to the detection information of the test tube detection mechanism.

[0113] According to the test tube type, the third test tube is transferred to the corresponding mixing component of the first mixing position;

[0114] And / or, the step of transferring the fourth test tube containing the blood sample from the injection mechanism located at the preset injection position to the second mixing position of the mixing mechanism includes:

[0115] The fourth test tube containing the blood sample is transferred from the injection mechanism located at the preset injection position to the test tube testing mechanism, and the test tube type of the fourth test tube is obtained according to the testing information of the test tube testing mechanism.

[0116] According to the test tube type, the fourth test tube is transferred to the corresponding mixing component of the second mixing position.

[0117] In some embodiments, when the blood analyzer is in the reset state, the line connecting the first mixing position, the second mixing position, and the placement position extends in a first direction; the line connecting the placement position and the sampling position extends in a second direction, and the first direction and the second direction are perpendicular to and intersect each other.

[0118] Alternatively, in the reset state, the line connecting the first mixing position, the second mixing position, and the placement position of the blood analyzer extends in a first direction; the line connecting the placement position and the sampling position extends in a second direction, the first direction and the second direction being perpendicular and intersecting; the line connecting the sampling position and the reaction position extends in the first direction, and the line connecting the sampling position and the reaction position is spaced apart from the line connecting the first mixing position, the second mixing position, and the placement position.

[0119] In some embodiments, the injection position is located on the line connecting the first mixing position, the second mixing position, and the placement position.

[0120] In some embodiments, the placement positions include at least two, and at least two of the placement positions are arranged along a first direction;

[0121] Alternatively, the placement positions may include at least two, the transfer mechanisms may include at least two, the at least two placement positions may be arranged along the first direction, and the two different placement positions may be respectively located in two different transfer mechanisms.

[0122] In some embodiments, the method further includes controlling the transfer mechanism to perform different transfer operations on test tubes at different placement positions on the transfer mechanism.

[0123] In some embodiments, after the mixing operation is completed in the second test tube, the method further includes:

[0124] The transfer mechanism is controlled to transfer the third test tube, after the mixing operation is completed, to the placement position of the transfer mechanism, and the transfer mechanism is controlled to transfer the third test tube located at the placement position to the sampling position, and the sampling mechanism is controlled to distribute the blood sample in the third test tube located at the sampling position to the reaction mechanism for mixing and reaction with the reagents.

[0125] It should be noted that those skilled in the art will understand that, for the sake of convenience and brevity, the specific working process of the control method of the blood analyzer described above can be referred to the corresponding working process of the aforementioned blood analyzer, and will not be repeated here.

[0126] It should be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0127] It should also be understood that the term "and / or" as used in this specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations. It should be noted that, herein, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0128] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above descriptions are merely specific implementations of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A blood analyzer, characterized in that, The blood analyzer includes a sample injection mechanism, a transfer mechanism, a mixing mechanism, a transfer mechanism, a sample aspiration mechanism, a reaction mechanism, and a controller. The mixing mechanism has a first mixing position and a second mixing position, and the transfer mechanism has a placement position for placing test tubes. The controller is used for: The control transfer mechanism places the first test tube, which is carried by the sample injection mechanism, into the first mixing position and the second test tube into the second mixing position, and controls the mixing mechanism to start so as to mix the first test tube located in the first mixing position and the second test tube located in the second mixing position. After the first test tube in the first mixing position is mixed, the transfer mechanism is controlled to perform a first transfer operation on the first test tube in the first mixing position. The first transfer operation includes transferring the first test tube placed in the first mixing position from the mixing mechanism to the placement position of the transfer mechanism, and transferring the third test tube containing the blood sample from the injection mechanism located at the preset injection position to the first mixing position of the mixing mechanism, so as to perform a mixing operation on the third test tube. After the first test tube in the first transfer operation is transferred to the placement position, the transfer mechanism is controlled to transfer the first test tube located at the placement position to the preset sampling position, and the sampling mechanism is controlled to distribute the blood sample in the first test tube located at the sampling position to the reaction mechanism located at the preset reaction position for mixing and reaction with reagents, and the transfer mechanism is controlled to perform a second transfer operation. The second transfer operation includes transferring the first test tube with the completed sample distribution from the transfer mechanism located at the preset transfer position to the injection mechanism, transferring the second test tube with the completed mixing at the first mixing position to the placement position of the transfer mechanism, and transferring the fourth test tube containing the blood sample from the injection mechanism located at the preset injection position to the second mixing position of the mixing mechanism to perform a mixing operation on the fourth test tube. Furthermore, during the mixing process of the mixing mechanism on the fourth test tube, the third test tube completes the mixing operation.

2. The blood analyzer according to claim 1, characterized in that, The blood analyzer also includes a cap removal mechanism, and the controller, in controlling the transfer mechanism to transfer the first test tube located at the placement position to the preset sampling position, includes: The transfer mechanism is controlled to move the first test tube located in the placement position to a preset cap removal position, and the cap removal mechanism is controlled to perform a preset cap removal operation on the first test tube located in the cap removal position. After the cap removal operation is completed, the transfer mechanism is controlled to transfer the first test tube located at the cap removal position to the preset sampling position.

3. The blood analyzer according to claim 1, characterized in that, The controller, in controlling the sampling mechanism to dispense the blood sample from the first test tube located at the sampling position to the reaction mechanism located at the preset reaction position for mixing and reaction with reagents, includes: Control the sampling mechanism to move to the sampling position and draw blood sample from the first test tube located at the sampling position; After the blood sample in the first test tube is aspirated, the aspiration mechanism is controlled to analyze the blood sample to the reaction mechanism located at the preset reaction position, so as to mix it with the reagent in the reaction mechanism.

4. The blood analyzer according to claim 1, characterized in that, The blood analyzer further includes a test tube testing mechanism. The first mixing position is equipped with a first venous blood test tube mixing component and a first capillary blood test tube mixing component. The second mixing position is equipped with a second venous blood mixing component and a second capillary blood test tube mixing component. The controller, during the process of transferring a third test tube containing a blood sample from the injection mechanism located at a preset injection position to the first mixing position of the mixing mechanism, includes: The third test tube containing the blood sample is transferred from the injection mechanism located at the preset injection position to the test tube detection mechanism, and the test tube type of the third test tube is obtained according to the detection information of the test tube detection mechanism. According to the test tube type, the third test tube is transferred to the corresponding mixing component of the first mixing position; And / or, during the process of the controller transferring a fourth test tube containing a blood sample from the injection mechanism located at a preset injection position to the second mixing position of the mixing mechanism, the controller includes: The fourth test tube containing the blood sample is transferred from the injection mechanism located at the preset injection position to the test tube testing mechanism, and the test tube type of the fourth test tube is obtained according to the testing information of the test tube testing mechanism. According to the test tube type, the fourth test tube is transferred to the corresponding mixing component of the second mixing position.

5. The blood analyzer according to any one of claims 1-4, characterized in that, In the reset state, the line connecting the first mixing position, the second mixing position, and the placement position of the blood analyzer extends in a first direction; the line connecting the placement position and the sampling position extends in a second direction, and the first direction and the second direction are perpendicular to and intersect each other. Alternatively, in the reset state, the line connecting the first mixing position, the second mixing position, and the placement position of the blood analyzer extends in a first direction; the line connecting the placement position and the sampling position extends in a second direction, the first direction and the second direction being perpendicular and intersecting; the line connecting the sampling position and the reaction position extends in the first direction, and the line connecting the sampling position and the reaction position is spaced apart from the line connecting the first mixing position, the second mixing position, and the placement position.

6. The blood analyzer according to claim 5, characterized in that, The injection point is located on the line connecting the first mixing point, the second mixing point, and the placement point.

7. The blood analyzer according to any one of claims 1-4, characterized in that, The placement positions include at least two, and at least two of the placement positions are arranged along the first direction; Alternatively, the placement positions may include at least two, the transfer mechanisms may include at least two, the at least two placement positions may be arranged along the first direction, and the two different placement positions may be respectively located in two different transfer mechanisms.

8. The blood analyzer according to claim 7, characterized in that, The controller is also used to: control the transfer mechanism to perform different transfer operations on test tubes at different placement positions on the transfer mechanism.

9. The blood analyzer according to claim 1, characterized in that, After the mixing operation is completed in the second test tube, the controller is also used to: The transfer mechanism is controlled to transfer the third test tube, after the mixing operation is completed, to the placement position of the transfer mechanism, and the transfer mechanism is controlled to transfer the third test tube located at the placement position to the sampling position, and the sampling mechanism is controlled to distribute the blood sample in the third test tube located at the sampling position to the reaction mechanism for mixing and reaction with the reagents.

10. A control method applied to a blood analyzer, characterized in that, The blood analyzer includes a sample injection mechanism, a transfer mechanism, a mixing mechanism, a transfer mechanism, a sample aspiration mechanism, and a reaction mechanism. The mixing mechanism has a first mixing position and a second mixing position, and the transfer mechanism has a placement position for placing test tubes. The method includes: The control transfer mechanism places the first test tube, which is carried by the sample injection mechanism, into the first mixing position and the second test tube into the second mixing position, and controls the mixing mechanism to start so as to mix the first test tube located in the first mixing position and the second test tube located in the second mixing position. After the first test tube in the first mixing position is mixed, the transfer mechanism is controlled to perform a first transfer operation on the first test tube in the first mixing position. The first transfer operation includes transferring the first test tube placed in the first mixing position from the mixing mechanism to the placement position of the transfer mechanism, and transferring the third test tube containing the blood sample from the injection mechanism located at the preset injection position to the first mixing position of the mixing mechanism, so as to perform a mixing operation on the third test tube. After the first test tube in the first transfer operation is transferred to the placement position, the transfer mechanism is controlled to transfer the first test tube located at the placement position to the preset sampling position, and the sampling mechanism is controlled to distribute the blood sample in the first test tube located at the sampling position to the reaction mechanism located at the preset reaction position for mixing and reaction with reagents, and the transfer mechanism is controlled to perform a second transfer operation. The second transfer operation includes transferring the first test tube with the completed sample distribution from the transfer mechanism located at the preset transfer position to the injection mechanism, transferring the second test tube with the completed mixing at the first mixing position to the placement position of the transfer mechanism, and transferring the fourth test tube containing the blood sample from the injection mechanism located at the preset injection position to the second mixing position of the mixing mechanism to perform a mixing operation on the fourth test tube. Furthermore, during the mixing process of the mixing mechanism on the fourth test tube, the third test tube completes the mixing operation.

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