Liquid absorption detection device and sample analyzer

Abstract

The embodiment of the utility model discloses an imbibition detection device and a sample analyzer, which are characterized in that a first end of a first liquid path converter is communicated with a sample source end, and the first liquid path converter is used for acquiring a sample; the second end of the first liquid path converter is communicated with the first end of the second liquid path converter, and the first liquid path converter is used for transmitting a sample to the second liquid path converter in a conducting state; the third end of the first liquid path converter is communicated with the first end of the liquid absorption amount detection module, and the first liquid path converter is used for transmitting a sample to the liquid absorption amount detection module in a conducting state; the second end of the liquid absorption amount detection module is communicated with the second end of the second liquid path converter and is used for transmitting the sample to the second liquid path converter and measuring the flow of the sample; and the third end of the second liquid path converter is communicated with the sample analysis end and is used for transmitting the sample to the sample analysis end. By utilizing the device, the problem of inaccurate analysis result caused by the error of the liquid absorption amount can be effectively avoided, and the accuracy and the reliability of the analysis result are ensured.

Description

Technical Field

[0001] The utility model relates to the field of medical technology, in particular to a liquid suction detection device and a sample analyzer. Background Art

[0002] The liquid suction volume of a sample analyzer affects the accuracy of the analysis result. For example, the liquid suction volume of a blood cell analyzer affects the accuracy of cell counting. Because in the pre-dilution mode, the mixing degree of the blood sample and the diluent is directly affected by the liquid suction volume. If the liquid suction volume is insufficient, the analysis result will be on the low side. If the liquid suction volume is excessive, the analysis result will be on the high side.

[0003] Therefore, in order to ensure the accuracy of the analysis result of the sample analyzer, it is necessary to regularly perform liquid suction detection on the sample analyzer to calibrate the liquid suction of the sampling needle when the liquid suction of the sampling needle is abnormal. Summary of the Utility Model

[0004] Based on this, it is necessary to address the above problems and propose a liquid suction detection device and a sample analyzer. Using this device can effectively avoid the problem of inaccurate analysis results caused by the error of the liquid suction volume, and ensure the accuracy and reliability of the analysis result.

[0005] To achieve the above object, in a first aspect, the utility model provides a liquid suction detection device, which includes a first liquid path converter, a second liquid path converter and a liquid suction volume detection module;

[0006] The first end of the first liquid path converter is communicated with the sample source end for obtaining a sample;

[0007] The second end of the first liquid path converter is communicated with the first end of the second liquid path converter for transmitting the sample to the second liquid path converter in the conducting state;

[0008] The third end of the first liquid path converter is communicated with the first end of the liquid suction volume detection module for transmitting the sample to the liquid suction volume detection module in the conducting state;

[0009] The second end of the liquid suction volume detection module is communicated with the second end of the second liquid path converter for transmitting the sample to the second liquid path converter and measuring the sample flow rate in the conducting state;

[0010] The third end of the second liquid path converter is communicated with the sample analysis end for transmitting the sample to the sample analysis end.

[0011] Optionally, the liquid suction detection device further includes a first liquid path pipeline, a second liquid path pipeline and a third liquid path pipeline;

[0012] The second end of the first liquid path converter is communicated with the first end of the second liquid path converter through the first liquid path pipeline, and is used for transmitting the sample to the second liquid path converter through the first liquid path pipeline in the conducting state;

[0013] The third end of the first liquid path converter is communicated with the first end of the liquid absorption amount detection module through the second liquid path pipeline, and is used for transmitting the sample to the liquid absorption amount detection module through the second liquid path pipeline in the conducting state;

[0014] The second end of the liquid absorption amount detection module is communicated with the second end of the second liquid path converter through the third liquid path pipeline, and is used for transmitting the sample that has completed the sample flow measurement to the second liquid path converter through the third liquid path pipeline in the conducting state.

[0015] Optionally, the liquid absorption detection device further includes a first valve, a second valve, and a third valve;

[0016] The first valve is arranged on the first liquid path pipeline and is used for controlling the conducting state of the first liquid path pipeline;

[0017] The second valve is arranged on the second liquid path pipeline and is used for controlling the conducting state of the second liquid path pipeline;

[0018] The third valve is arranged on the third liquid path pipeline and is used for controlling the conducting state of the third liquid path pipeline.

[0019] Optionally, the liquid absorption amount detection module includes a third liquid path converter and a flow sensor;

[0020] The first end of the third liquid path converter is communicated with the third end of the first liquid path converter through the second liquid path pipeline, and the second end of the third liquid path converter is communicated with the second end of the second liquid path converter through the third liquid path pipeline;

[0021] The flow sensor is arranged in the third liquid path converter and is used for measuring the sample flow rate of the sample flowing through the third liquid path converter.

[0022] Optionally, the liquid absorption detection device further includes a controller;

[0023] The controller is electrically connected to the flow sensor and is used for acquiring the sample flow rate data of the flow sensor.

[0024] Optionally, the controller is electrically connected to the first valve, the second valve, and the third valve respectively, and is used for sending control signals to the first valve, the second valve, and the third valve respectively;

[0025] The first valve, the second valve, and the third valve are respectively used to adjust the conduction state according to corresponding control signals.

[0026] Optionally, the liquid suction detection device further includes an alarm;

[0027] The controller is electrically connected to the alarm and is used to send an alarm signal to the alarm.

[0028] Optionally, the alarm is a buzzer and / or a warning light.

[0029] Optionally, the liquid suction detection device further includes a fourth liquid path pipeline and a fifth liquid path pipeline;

[0030] The first end of the first liquid path converter is communicated with the sample source end through the fourth liquid path pipeline and is used to obtain a sample through the fourth liquid path pipeline;

[0031] The third end of the second liquid path converter is communicated with the sample analysis end through the fifth liquid path pipeline and is used to transmit the sample to the sample analysis end through the fifth liquid path pipeline.

[0032] To achieve the above object, the present utility model provides a sample analyzer in a second aspect. The sample analyzer includes a sampling needle, a sample analysis cell, and the liquid suction detection device according to any one of the first aspect. The conduit of the sampling needle serves as the sample source end and is communicated with the first end of the first liquid path converter; the sample analysis cell serves as the sample analysis end and is communicated with the third end of the second liquid path converter.

[0033] By adopting the embodiment of the present utility model, the following beneficial effects are achieved: The above device includes a first liquid path converter, a second liquid path converter, and a liquid suction amount detection module. The first end of the first liquid path converter is communicated with the sample source end and is used to obtain a sample; the second end of the first liquid path converter is communicated with the first end of the second liquid path converter and is used to transmit the sample to the second liquid path converter in a conduction state; the third end of the first liquid path converter is communicated with the first end of the liquid suction amount detection module and is used to transmit the sample to the liquid suction amount detection module in a conduction state; the second end of the liquid suction amount detection module is communicated with the second end of the second liquid path converter and is used to transmit the sample to the second liquid path converter and measure the sample flow rate; the third end of the second liquid path converter is communicated with the sample analysis end and is used to transmit the sample to the sample analysis end. By using this device, the problem of inaccurate analysis results caused by errors in the liquid suction amount can be effectively avoided, ensuring the accuracy and reliability of the analysis results. Description of the Drawings

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0035] Wherein:

[0036] Figure 1 It is a schematic diagram of a liquid absorption detection device in an embodiment of the present application;

[0037] Figure 2 It is another schematic diagram of a liquid absorption detection device in an embodiment of the present application. Detailed implementation manners

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0039] The liquid absorption volume of the sample analyzer will affect the accuracy of the analysis result. For example, the liquid absorption volume of a blood cell analyzer will affect the accuracy of cell counting because, in the pre-dilution mode, the mixing degree of the blood sample and the diluent is directly affected by the liquid absorption volume. If the liquid absorption volume is insufficient, the analysis result will be on the low side, and if the liquid absorption volume is excessive, the analysis result will be on the high side.

[0040] It can be understood that the liquid absorption volume of the sample analyzer may be affected by various external interference factors, resulting in a low or high liquid absorption volume; for example, blockage of the sampling needle, suction force change of the liquid absorption device, deformation or bending of the sampling needle, replacement of the sampling needle with other specifications, airtightness of the internal air path, change in air pressure, and motor aging and other external interference factors may all affect the liquid absorption volume.

[0041] Therefore, in order to ensure the accuracy of the analysis result of the sample analyzer, it is necessary to regularly perform liquid absorption detection on the sample analyzer to calibrate the liquid absorption of the sampling needle when the liquid absorption of the sampling needle is abnormal.

[0042] In view of the above problems, the present application proposes a liquid absorption detection device and a sample analyzer. By adding a device including a first liquid path converter, a second liquid path converter, and a liquid absorption volume detection module in the sample analyzer, the problem of inaccurate analysis results caused by errors in the liquid absorption volume can be effectively avoided, ensuring the accuracy and reliability of the analysis result.

[0043] Please refer to Figure 1 , which is a schematic diagram of a liquid suction detection device in an embodiment of the present application. The device includes a first liquid path converter 110, a second liquid path converter 120, and a liquid suction volume detection module 130.

[0044] In a feasible implementation, the first end of the first liquid path converter 110 is connected to the sample source end for obtaining a sample; the second end of the first liquid path converter 110 is connected to the first end of the second liquid path converter 120 for transmitting the sample to the second liquid path converter 120 in a conducting state; the third end of the first liquid path converter 110 is connected to the first end of the liquid suction volume detection module 130 for transmitting the sample to the liquid suction volume detection module 130 in a conducting state; the second end of the liquid suction volume detection module 130 is connected to the second end of the second liquid path converter 120 for transmitting the sample to the second liquid path converter 120 and measuring the sample flow rate; the third end of the second liquid path converter 120 is connected to the sample analysis end for transmitting the sample to the sample analysis end in a conducting state.

[0045] Among them, the arrow directions at the first end of the first liquid path converter 110 and the third end of the second liquid path converter 120 are the sample flow directions, including the inflow direction and the outflow direction.

[0046] In some embodiments, if liquid suction detection is required, the connection between the second end of the first liquid path converter 110 and the first end of the second liquid path converter 120 is in a cut-off state, while the connection between the third end of the first liquid path converter 110 and the first end of the liquid suction volume detection module 130 is in a conducting state, and the connection between the second end of the liquid suction volume detection module 130 and the second end of the second liquid path converter 120 is in a conducting state. After the sampling needle aspirates the sample, the sample will flow through the sample source end, the first liquid path converter 110, the liquid suction volume detection module 130, and the sample analysis end in sequence. During this process, the liquid suction volume detection module 130 will measure the sample flow rate of the flowing sample to determine whether there is an error in the liquid suction volume based on the measured sample flow rate.

[0047] It can be understood that the cut-off state between the second end of the first liquid path converter 110 and the first end of the second liquid path converter 120 can prevent a part of the sample from flowing through the second liquid path converter 120, resulting in inaccurate measurement of the sample flow rate.

[0048] In some other embodiments, if liquid suction detection is not required, the second end of the first liquid path converter 110 is in a conducting state with the first end of the second liquid path converter 120, while the third end of the first liquid path converter 110 is in a cut-off state with the first end of the liquid suction volume detection module 130, and the second end of the liquid suction volume detection module 130 is in a cut-off state with the second end of the second liquid path converter 120. After the sampling needle aspirates the sample, the sample will flow through the sample source end, the first liquid path converter 110, the second liquid path converter 120, and the sample analysis end in sequence. At this time, the sample analyzer can operate in the normal working mode without causing any impact on the original functions of the sample analyzer.

[0049] It can be understood that the cut-off state between the third end of the first liquid path converter 110 and the first end of the liquid suction volume detection module 130 can prevent a part of the sample from flowing through the liquid suction volume detection module 130, which may affect the original functions of the sample analyzer, resulting in inaccurate analysis results and affecting the accuracy of the analysis results; the cut-off state between the second end of the liquid suction volume detection module 130 and the second end of the second liquid path converter 120 can prevent a part of the sample from flowing back to the liquid suction volume detection module 130, which may affect the original functions of the sample analyzer, resulting in inaccurate analysis results and affecting the accuracy of the analysis results.

[0050] It should be noted that after obtaining the measured sample flow rate, the liquid suction volume can be obtained, and then it can be judged whether there is an error in the liquid suction volume; furthermore, a standard liquid suction volume can be set, and by comparing the time required for the liquid suction volume to reach the standard liquid suction volume with the expected required time range, it can be judged whether there is an error in the liquid suction volume; among them, the expected required time range can be the fluctuation range of the time required for the standard liquid suction volume, or the time difference range between the time required for the standard liquid suction volume and the allowable error time range.

[0051] Furthermore, in some embodiments, if there is no sample in the liquid suction needle, the first liquid path converter 110, the liquid suction volume detection module 130, etc. before liquid suction detection, the standard liquid suction volume needs to maintain a unified variable during the measurement process, that is, there should also be no sample in the liquid suction needle, the first liquid path converter 110, the liquid suction volume detection module 130, etc.; of course, in some other embodiments, if there is a certain amount of sample in the liquid suction needle, the first liquid path converter 110, the liquid suction volume detection module 130, etc. before liquid suction detection, the standard liquid suction volume needs to maintain a unified variable during the measurement process, that is, there should also be a certain amount of sample in the liquid suction needle, the first liquid path converter 110, the liquid suction volume detection module 130, etc., or the difference obtained by subtracting the sample volume of a certain amount of sample from the obtained standard liquid suction volume is used as the standard liquid suction volume.

[0052] In the embodiments of the present application, by adding a device including a first liquid path converter 110, a second liquid path converter 120, and a liquid suction volume detection module 130 in the sample analyzer, the device can effectively avoid the problem of inaccurate analysis results caused by errors in the liquid suction volume, and ensure the accuracy and reliability of the analysis results.

[0053] Please continue to refer to Figure 1 , the liquid suction detection device further includes a first liquid path pipeline 210, a second liquid path pipeline 220, and a third liquid path pipeline 230.

[0054] In a feasible implementation, the second end of the first liquid path converter 110 is connected to the first end of the second liquid path converter 120 through the first liquid path pipeline 210, and is used to transmit the sample to the second liquid path converter 120 through the first liquid path pipeline 210 in the conducting state; the third end of the first liquid path converter 110 is connected to the first end of the liquid suction volume detection module 130 through the second liquid path pipeline 220, and is used to transmit the sample to the liquid suction volume detection module 130 through the second liquid path pipeline 220 in the conducting state; the second end of the liquid suction volume detection module 130 is connected to the second end of the second liquid path converter 120 through the third liquid path pipeline 230, and is used to transmit the sample that has completed the sample flow measurement to the second liquid path converter 120 through the third liquid path pipeline 230 in the conducting state.

[0055] In the embodiments of the present application, by adding the first liquid path pipeline 210, the second liquid path pipeline 220, and the third liquid path pipeline 230 to connect the first liquid path converter 110, the second liquid path converter 120, and the liquid suction volume detection module 130, the transmission efficiency of the sample can be effectively improved.

[0056] Please continue to refer to Figure 1 , the liquid suction detection device further includes a first valve 310, a second valve 320, and a third valve 330.

[0057] In a feasible implementation, the first valve 310 is arranged on the first liquid path pipeline 210 and is used to control the conducting state of the first liquid path pipeline 210; the second valve 320 is arranged on the second liquid path pipeline 220 and is used to control the conducting state of the second liquid path pipeline 220; the third valve 330 is arranged on the third liquid path pipeline 230 and is used to control the conducting state of the third liquid path pipeline 230.

[0058] In the embodiments of the present application, by adding the first valve 310, the second valve 320, and the third valve 330 to control the conducting states of the first liquid path pipeline 210, the second liquid path pipeline 220, and the third liquid path pipeline 230, the conducting state or the cut-off state of each liquid path pipeline can be flexibly controlled, so as to selectively allow the sample to pass through the specified liquid path pipeline or prevent the sample from passing through the specified liquid path pipeline according to needs.

[0059] Please continue to refer to Figure 1 , the liquid suction volume detection module 130 includes a third liquid path converter 131 and a flow sensor 132.

[0060] In a feasible implementation, the first end of the third liquid path converter 131 is communicated with the third end of the first liquid path converter 110 through a second liquid path pipe 220, and the second end of the third liquid path converter 131 is communicated with the second end of the second liquid path converter 120 through a third liquid path pipe 230; the flow sensor 132 is arranged in the third liquid path converter 131 and is used for measuring the sample flow rate of the sample flowing through the third liquid path converter 131.

[0061] In the embodiment of the present application, by arranging the flow sensor 132 in the third liquid path converter 131 to form the liquid suction volume detection module 130, the sample flow rate flowing through the third liquid path converter 131 can be monitored in real time, and the sample flow rate flowing through the third liquid path converter 131 can be accurately detected.

[0062] Please refer to Figure 2 , which is another schematic diagram of a liquid suction detection device in the embodiment of the present application. The liquid suction detection device further includes a controller 410.

[0063] In a feasible implementation, the controller 410 is electrically connected to the flow sensor 132 and is used for acquiring the sample flow rate data of the flow sensor 132.

[0064] In some embodiments, after acquiring the sample flow rate data of the flow sensor 132, the controller 410 can further determine the liquid suction volume based on the sample flow rate data to judge whether there is an error in the liquid suction volume.

[0065] In other embodiments, after acquiring the sample flow rate data of the flow sensor 132, the controller 410 can further determine the time required for the liquid suction volume to reach the standard liquid suction volume based on the sample flow rate data, and then compare the required time with the expected required time range to judge whether there is an error in the liquid suction volume.

[0066] In the embodiment of the present application, by adding the controller 410, it is convenient to determine the liquid suction volume based on the sample flow rate data to judge whether there is an error in the liquid suction volume; or it is convenient to determine the time required for the liquid suction volume to reach the standard liquid suction volume based on the sample flow rate data, and then compare the required time with the expected required time range to judge whether there is an error in the liquid suction volume.

[0067] Please continue to refer to Figure 2 , the controller 410 is electrically connected to the first valve 310, the second valve 320, and the third valve 330 respectively, and is used for sending control signals to the first valve 310, the second valve 320, and the third valve 330 respectively.

[0068] In a feasible implementation, the first valve 310, the second valve 320, and the third valve 330 are respectively used to adjust the conduction state according to corresponding control signals.

[0069] In the embodiment of the present application, the controller 410 uses control signals to respectively control the first valve 310, the second valve 320, and the third valve 330 to adjust the conduction state or the cut-off state, which can achieve automated, precise, and fast-response control, so as to facilitate the liquid suction detection at any time and improve the convenience of the liquid suction detection.

[0070] Please continue to refer to Figure 2 , the liquid suction detection device further includes an alarm 510.

[0071] In a feasible implementation, the controller 410 is electrically connected to the alarm 510 and is used to send an alarm signal to the alarm 510.

[0072] In some embodiments, after the controller 410 obtains the sample flow rate data of the flow sensor 132, it can also determine the liquid suction volume based on the sample flow rate data, and then when the difference between the liquid suction volume and the standard liquid suction volume is large (such as greater than a preset error value), it indicates that there is an error in the liquid suction volume. At this time, an alarm signal is sent to the alarm 510.

[0073] In some other embodiments, after the controller 410 obtains the sample flow rate data of the flow sensor 132, it can also determine the time required for the liquid suction volume to reach the standard liquid suction volume based on the sample flow rate data, and then compare the required time with the expected required time range. When the required time exceeds the expected required time range, it indicates that there is an error in the liquid suction volume. At this time, an alarm signal is sent to the alarm 510.

[0074] In the embodiment of the present application, by adding the alarm 510, when there is an error in the liquid suction volume, the controller 410 can timely send an alarm signal to the alarm 510, thereby triggering the response of the alarm 510, facilitating the operator to quickly know the abnormal situation of the liquid suction detection and take corresponding measures in time.

[0075] In a feasible implementation, the alarm 510 is a buzzer and / or a warning light.

[0076] In the embodiment of the present application, when there is an error in the liquid suction volume, it can give prompts such as making a sound and flashing lights through the buzzer and / or the warning light, facilitating the operator to quickly know the abnormal situation of the liquid suction detection and take corresponding measures in time.

[0077] Please continue to refer to Figure 2, the liquid absorption detection device further includes a fourth liquid path pipe 610 and a fifth liquid path pipe 620;

[0078] In a feasible implementation manner, the first end of the first liquid path converter 110 is communicated with the sample source end through the fourth liquid path pipe 610 for obtaining a sample through the fourth liquid path pipe 610; the third end of the second liquid path converter 120 is communicated with the sample analysis end through the fifth liquid path pipe 620 for transmitting the sample to the sample analysis end through the fifth liquid path pipe 620.

[0079] In the embodiment of the present application, by adding the fourth liquid path pipe 610 and the fifth liquid path pipe 620, it is convenient to connect the sample source end and the sample analysis end, and the transmission efficiency of the sample can also be improved.

[0080] In some embodiments, the present application further provides a sample analyzer, which includes a sampling needle, a sample analysis cell, and the liquid absorption detection device according to any one of the above embodiments. The catheter of the sampling needle serves as the sample source end and is communicated with the first end of the first liquid path converter 110; the sample analysis cell serves as the sample analysis end and is communicated with the third end of the second liquid path converter 120 (not shown in the figure).

[0081] It should be noted that the sample analyzer of the present application, in addition to including a sampling needle, a sample analysis cell, and the liquid absorption detection device according to any one of the above embodiments, specifically, the sample analyzer in actual application may further include components and structures in the existing sample analyzer, which will not be elaborated here.

[0082] In the embodiment of the present application, by adding a device including the first liquid path converter 110, the second liquid path converter 120, and the liquid absorption amount detection module 130 in the sample analyzer, the problem that the analysis result is inaccurate due to the error of the liquid absorption amount can be effectively avoided by using this device, and the accuracy and reliability of the analysis result are ensured.

[0083] The technical features of the above embodiments can be combined arbitrarily. For the sake of brief description, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combinations of these technical features do not conflict, they should be considered as the scope described in this specification.

[0084] The above-described embodiments only represent several implementation manners of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A liquid aspiration detection device, characterized in that: The device comprises a first liquid circuit converter, a second liquid circuit converter and a liquid aspiration amount detection module; The first end of the first fluid path converter is connected to the sample source end for obtaining the sample; The second end of the first fluid circuit converter is in communication with the first end of the second fluid circuit converter, and is used to transfer the sample to the second fluid circuit converter in a conducting state; The third end of the first liquid path converter is in communication with the first end of the liquid aspiration detection module, and is used to transmit the sample to the liquid aspiration detection module in a conducting state; The second end of the liquid aspiration detection module is in communication with the second end of the second liquid circuit converter, and is used to transmit the sample to the second liquid circuit converter in a conducting state and measure the sample flow rate; The third end of the second fluid path converter is in communication with the sample analysis end, and is used to transfer the sample to the sample analysis end.

2. The liquid absorption detection device according to claim 1, characterized in that: The liquid aspiration detection device also includes a first liquid path pipeline, a second liquid path pipeline and a third liquid path pipeline; The second end of the first fluid circuit converter is in communication with the first end of the second fluid circuit converter through the first fluid circuit pipeline, and is used to transfer the sample to the second fluid circuit converter through the first fluid circuit pipeline in a conducting state; The third end of the first liquid path converter is connected to the first end of the liquid aspiration detection module through the second liquid path pipeline, and is used to transmit the sample to the liquid aspiration detection module through the second liquid path pipeline in a conducting state; The second end of the liquid aspiration detection module is connected to the second end of the second liquid circuit converter through the third liquid circuit pipeline, and is used to transmit the sample that has completed the sample flow measurement to the second liquid circuit converter through the third liquid circuit pipeline in a conductive state.

3. The liquid absorption detection device according to claim 2, characterized in that: The liquid aspiration detection device also includes a first valve, a second valve and a third valve; The first valve is disposed on the first liquid pipeline and is used to control the conduction state of the first liquid pipeline; The second valve is disposed on the second liquid pipeline and is used to control the conduction state of the second liquid pipeline; The third valve is arranged on the third fluid pipeline and is used to control the conduction state of the third fluid pipeline.

4. The liquid absorption detection device according to claim 3, characterized in that: The liquid absorption amount detection module includes a third liquid path converter and a flow sensor; The first end of the third fluid circuit converter is connected to the third end of the first fluid circuit converter through the second fluid circuit pipeline, and the second end of the third fluid circuit converter is connected to the second end of the second fluid circuit converter through the third fluid circuit pipeline; The flow sensor is disposed in the third fluid path converter and is used to measure a sample flow rate of a sample flowing through the third fluid path converter.

5. The liquid absorption detection device according to claim 4, characterized in that: The liquid aspiration detection device also includes a controller; The controller is electrically connected to the flow sensor and is used to obtain sample flow data of the flow sensor.

6. The liquid absorption detection device according to claim 5, characterized in that: The controller is electrically connected to the first valve, the second valve, and the third valve, respectively, and is used to send control signals to the first valve, the second valve, and the third valve, respectively; The first valve, the second valve, and the third valve are respectively used to adjust the conduction state according to the corresponding control signal.

7. The liquid absorption detection device according to claim 5, characterized in that: The liquid aspiration detection device also includes an alarm; The controller is electrically connected to the alarm and is used to send an alarm signal to the alarm.

8. The liquid absorption detection device according to claim 7, characterized in that: The alarm is a buzzer and / or a warning light.

9. The liquid absorption detection device according to claim 1, characterized in that: The liquid aspiration detection device also includes a fourth liquid path pipeline and a fifth liquid path pipeline; The first end of the first fluid path converter is connected to the sample source end through the fourth fluid path pipeline, and is used to obtain the sample through the fourth fluid path pipeline; The third end of the second liquid path converter is in communication with the sample analysis end through the fifth liquid path pipeline, and is used to transfer the sample to the sample analysis end through the fifth liquid path pipeline.

10. A sample analyzer, characterized in that: The sample analyzer includes a sampling needle, a sample analysis pool and a liquid aspiration detection device as described in any one of claims 1 to 9, wherein the catheter of the sampling needle serves as the sample source end and is connected to the first end of the first liquid circuit converter; the sample analysis pool serves as the sample analysis end and is connected to the third end of the second liquid circuit converter.

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