Assembly assembly, kit and hematology analyzer

Abstract

The invention discloses an assembly component, a kit and a hematology analyzer. The forebay end of the assembly component is communicated with a forebay of the kit through a micropore; one side, far away from the front tank end, of the rear tank end is connected with the rear tank of the kit; wherein the front pool end and the rear pool end are communicated to form a flow channel, the flow channel comprises a first flow channel and a second flow channel, the first flow channel and the second flow channel are respectively distributed along the circumferential direction of the rear pool end, a sample flow flows through the micropores, the first flow channel is used for intercepting bubbles in the sample flow, and the second flow channel is used for enabling the sample flow after the bubbles are intercepted to flow to the rear pool; the blood cell parameters of the sample flow are tested. Through the mode, the first flow channel and the second flow channel of the assembly component can be equivalent to a plurality of parallel resistors, the first flow channel intercepts bubbles in a sample flow, the second flow channel can reduce electric signal fluctuation caused by the bubbles, the stability of electric signals of the kit is improved, and then the detection accuracy of blood cell analysis is improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and particularly to an assembly component, a kit, and a hematology analyzer. Background Art

[0002] When an existing hematology analyzer receives a kit, an impedance test is performed on the sample flow of the kit by a detection component of the hematology analyzer. Specifically, the detection component uses a constant current source to supply power to the kit. The front pool and the rear pool of the kit are connected through a microporous plate. An assembly component is installed on the rear pool. The sample flow flows from the front pool through the microporous plate to the flow channel of the assembly component, and flows through the flow channel to the rear pool. The detection component characterizes some characteristics of blood cells by monitoring the fluctuation of the electrical signal of the sample flow in the flow channel.

[0003] Generally, the process of the sample flow flowing from the front pool to the microporous plate is connected to the atmosphere, and there is no obvious interference to the electrical signal in the liquid path design. However, when the sample flow flows from the microporous plate to the rear pool, the flow path of the sample flow is single, and there is a disadvantage of weak anti-interference ability. When there are bubbles in this section of the flow path, it will cause violent fluctuations in the electrical signal, and even mask the electrical signal used to characterize blood cells, resulting in low accuracy of the hematology analyzer. Summary of the Invention

[0004] To solve the technical problem of violent fluctuations in the electrical signal caused by the presence of bubbles, the present application provides a kit and a hematology analyzer.

[0005] To solve the above problems, the present application provides a first technical solution: providing an assembly component, including a front pool end and a rear pool end. The front pool end is communicated with the front pool of the kit through a micropore; one side of the rear pool end away from the front pool end is connected to the rear pool of the kit; wherein, the front pool end and the rear pool end are communicated to form a flow channel, the flow channel includes a first flow channel and a second flow channel, the first flow channel and the second flow channel are respectively distributed circumferentially along the rear pool end, the sample flow flows through the micropore, the first flow channel is used for intercepting bubbles in the sample flow, and the second flow channel is used for allowing the sample flow after intercepting the bubbles to flow to the rear pool to test the blood cell parameters of the sample flow.

[0006] Optionally, the cross-sectional area of the first flow channel is larger than the cross-sectional area of the second flow channel.

[0007] Optionally, the flow channel includes at least two second flow channels, and the sum of the cross-sectional areas of all the second flow channels is larger than the cross-sectional area of the first flow channel.

[0008] Optionally, the above-mentioned flow channel includes a first second flow channel and a second second flow channel, and the first second flow channel and the second second flow channel are respectively located on both sides of the first flow channel.

[0009] Optionally, the area of the first second flow channel, the second second flow channel and the first flow channel located in the area of the rear pool end is less than or equal to half of the rear pool end.

[0010] Optionally, a guiding surface extending from the front pool end to the rear pool end is provided on the first flow channel, and the height of the side of the guiding surface close to the rear pool end is greater than the height of the side of the guiding surface close to the front pool end.

[0011] To solve the above problems, the present application provides a second technical solution: providing a kit, including a box body, a detection pool, a microplate and the above-mentioned assembly component. The detection pool is arranged in the box body and includes a front pool and a rear pool, and the rear pool is arranged on one side of the front pool; the front pool end of the assembly component is communicated with the front pool through the micropores of the microplate, and the side of the rear pool end of the assembly component far from the front pool end is connected to the rear pool.

[0012] Optionally, the kit further includes a front pool electrode and a rear pool electrode. The front pool electrode is arranged on one side of the front pool, and the rear pool electrode is arranged on one side of the rear pool. The front pool electrode and the rear pool electrode are used to detect the voltage signal of the flow channel under a preset current.

[0013] To solve the above problems, the present application provides a second technical solution: providing a blood cell analyzer, including a detection seat, a power supply component and a detection component. The detection seat is used to receive the above-mentioned kit; the power supply component is arranged on the detection seat and is used to provide a preset current for the kit; the detection component is arranged on the detection seat, and the sample flow flows through the flow channel of the kit, and the detection component is used to collect the voltage signal of the flow channel to process the voltage signal and obtain the detection result of the sample flow.

[0014] Optionally, the second flow channel of the kit includes a first second flow channel and a second second flow channel. The detection component is used to test the first detection item for the sample flow flowing through the first second flow channel, or the detection component is used to test the second detection item for the sample flow flowing through the second second flow channel, and the first detection item and the second detection item are different.

[0015] The present application provides an assembly component, a kit, and a blood cell analyzer. The front pool end of the assembly component communicates with the front pool of the kit through a micropore; one side of the rear pool end away from the front pool end is connected to the rear pool of the kit; wherein, the front pool end and the rear pool end communicate to form a flow channel, the flow channel includes a first flow path and a second flow path, the first flow path and the second flow path are respectively distributed circumferentially along the rear pool end, the sample flow passes through the micropore, the first flow path is used to intercept air bubbles in the sample flow, and the second flow path is used to make the sample flow after intercepting the air bubbles flow to the rear pool to test the blood cell parameters of the sample flow. In the above manner, the first flow path and the second flow path of the assembly component of the present application can be equivalent to multiple parallel resistors. The first flow path intercepts the air bubbles in the sample flow, and the second flow path can reduce the electrical signal fluctuation caused by the air bubbles, improve the stability of the electrical signal of the kit, and further improve the detection accuracy of blood cell analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. Among them:

[0017] Figure 1 is a schematic structural diagram of an embodiment of the assembly component provided by the present application;

[0018] Figure 2 is a schematic structural diagram of another embodiment of the assembly component provided by the present application;

[0019] Figure 3 is a schematic structural diagram of an embodiment of the kit provided by the present application.

[0020] Among them, 11, detection pool; 110, front pool; 120, rear pool; 21, assembly component; 210, front pool end; 220, rear pool end; 230, first flow path; 230a, diversion surface; 240, second flow path. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0022] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present application, then such directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the attached drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0023] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present application, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0024] Please refer to Figure 1 and Figure 2 , Figure 1 is a schematic structural diagram of an embodiment of the assembly component provided by the present application, Figure 2 is a schematic structural diagram of another embodiment of the assembly component provided by the present application. As Figure 1 and Figure 2 shown, the assembly component 21 is applied to a reagent kit and is specifically used for assembling in the rear pool of the impedance detection pool of the reagent kit. In this embodiment, the assembly component 21 includes a front pool end 210 and a rear pool end 220.

[0025] Specifically, the front pool end 210 is communicated with the front pool of the reagent kit through micropores; one side of the rear pool end 220 away from the front pool end 210 is connected to the rear pool of the reagent kit; the front pool end 210 and the rear pool end 220 are communicated to form a flow channel, and the flow channel includes a first flow channel 230 and a second flow channel 240. The first flow channel 230 and the second flow channel 240 are respectively distributed circumferentially along the rear pool end 220. The sample flow passes through the micropores. The first flow channel 230 is used to intercept air bubbles in the sample flow, and the second flow channel 240 is used to make the sample flow after intercepting the air bubbles flow to the rear pool to test the blood cell parameters of the sample flow.

[0026] Among them, the front pool and the rear pool of the kit are arranged adjacent to each other. A first opening is provided on the front pool to receive a sample stream for detection through the first opening. The assembly component 21 can be installed on the adjacent side walls of the front pool and the rear pool. The sample stream in the front pool flows through the micropores and the flow channels of the assembly component 21 to the rear pool. In an optional embodiment, the assembly component 21 can be a plastic part. A second opening is provided at the front pool end 210 of the assembly component 21. The second opening is docked with the micropores, and the flow channel at the rear pool end 220 is communicated with the second opening at the front pool end 210, so that the sample stream flowing through the micropore plate flows into the flow channel at the rear pool end 220 from the front pool end 210.

[0027] The first flow channel 230 and the second flow channel 240 are respectively distributed circumferentially along the rear pool end 220. The sample stream at the front pool end 210 flows to the rear pool through the first flow channel 230 and the second flow channel 240. Among them, the sample stream includes a sample stream with bubbles and the remaining sample stream. The sample stream with bubbles flows into the first flow channel 230, so that the first flow channel 230 intercepts the bubbles in the sample stream. The remaining sample stream flows into the second flow channel 240, so that the sample stream after intercepting the bubbles flows to the rear pool through the second flow channel 240. When the assembly component 21 of this embodiment is installed in the kit, the first flow channel 230 and the second flow channel 240 can be equivalent to multiple parallel resistors. The first flow channel 230 intercepts the bubbles in the sample stream, and the second flow channel 240 can reduce the electrical signal fluctuations caused by the bubbles, improve the stability of the electrical signal of the kit, and further improve the detection accuracy of blood cell analysis.

[0028] In one embodiment, the cross-sectional area of the first flow channel 230 is larger than the cross-sectional area of the second flow channel 240.

[0029] Specifically, the cross-sectional area of the first flow channel 230 is the cross-sectional area when the sample stream flows in the first flow channel 230, and the cross-sectional area of the second flow channel 240 is the cross-sectional area when the sample stream flows in the second flow channel 240. The cross-sectional area of the first flow channel 230 is larger than the cross-sectional area of a certain second flow channel 240, which is convenient for the sample stream with bubbles to flow into the first flow channel 230 and the remaining sample stream to flow into the second flow channel 240, so that the second flow channel 240 can be used as the main flow channel for impedance detection and reduce the electrical signal fluctuations caused by bubbles.

[0030] Optionally, the flow channel includes at least two second flow channels 240. The first second flow channel 240 and the second second flow channel 240 can both be used as the main flow channels for impedance testing. When testing the blood cell parameters of the sample stream under an electrical signal, the blood cell analyzer can use at least two second flow channels 240 to correspond to different detection channels respectively, improving the applicability of the assembly component 21.

[0031] The sum of the cross-sectional areas of all the second flow channels 240 is greater than the cross-sectional area of the first flow channel 230. The first flow channel 230 and at least two second flow channels 240 can be equivalent to at least three parallel resistors, so that the electrical signal fluctuations generated when the sample flow with bubbles flows into the first flow channel 230 can be weakened by at least two second flow channels 240, further improving the stability of the electrical signal of the kit and the detection accuracy of blood cell analysis.

[0032] In one embodiment, the flow channel includes a first second flow channel 240 and a second second flow channel 240. The first second flow channel 240 and the second second flow channel 240 are respectively located on both sides of the first flow channel 230.

[0033] Specifically, the flow channel includes a first second flow channel 240 and a second second flow channel 240. The first second flow channel 240 and the second second flow channel 240 are respectively located on both sides of the first flow channel 230, so that when the user installs the assembly component 21 into the cartridge body, whether using the first second flow channel 240 or the second second flow channel 240 as the main flow channel for impedance testing, the first flow channel 230 is located on one side of the main flow channel. The first flow channel 230 can be used to flow the sample flow with bubbles, and the main flow channel can reduce the electrical signal fluctuations caused by the bubbles in the first flow channel 230, improving the stability of the electrical signal of the kit.

[0034] In an alternative embodiment, the first second flow channel 240 and the second second flow channel 240 are symmetrically distributed on both sides of the first flow channel 230, so as to reduce the mold making difficulty and production cost of the assembly component 21 and improve the practicality of the kit.

[0035] Optionally, the first second flow channel 240, the second second flow channel 240 and the first flow channel 230 are located in the area of the rear pool end 220, which is less than or equal to half of the rear pool end 220.

[0036] Specifically, the second flow channel 240 and the first flow channel 230 are arranged along the circumferential direction of the rear pool end 220. The rear pool end 220 can be cylindrical or approximately cylindrical. Half of the rear pool end 220 can be understood as the area after cutting the rear pool end 220 into two halves along the central axis of the rear pool end 220. For example, half of the rear pool end 220 can be the area surrounded by a semi-cylindrical surface. The area where the first second flow channel 240, the second second flow channel 240 and the first flow channel 230 are located in the rear pool end 220 is less than or equal to half of the rear pool end 220, that is, both the first flow channel 230 and the second flow channel 240 are located within the semi-cylindrical surface of the rear pool end 220, so that the sample flow only flows within half of the area of the rear pool end 220 when flowing in the flow channel, and the structural stability of the rear pool end 220 is improved.

[0037] In one embodiment, a flow guiding surface 230a extending from the front pool end 210 to the rear pool end 220 is provided on the first flow channel 230, and the height of the side of the flow guiding surface 230a close to the rear pool end 220 is greater than the height of the side of the flow guiding surface 230a close to the front pool end 210.

[0038] Specifically, a flow guiding surface 230a extending from the front pool end 210 to the rear pool end 220 is provided on the first flow channel 230, the height of the side of the flow guiding surface 230a close to the rear pool end 220 is greater than the height of the side of the flow guiding surface 230a close to the front pool end 210, or, along the flowing direction of the sample flow in the first flow channel 230, the height of the flow guiding surface 230a gradually increases. Wherein, the flow guiding surface 230a can be an inclined surface or a plane composed of sectors.

[0039] In this embodiment, when the sample flow flows into the first flow channel 230, since the height of the flow guiding surface 230a gradually increases along the flowing direction, the stress concentration generated during the flow of the sample flow can be reduced, and the first flow channel 230 is not easily deformed under the impact of the sample flow, so that the structural strength of the first flow channel 230 is better and the stability is higher.

[0040] Please refer to Figure 3 , Figure 3 is a schematic structural diagram of an embodiment of the kit provided by the present application. As Figure 3 shown, the kit includes a box body (not shown in the figure), a detection pool 11, a microplate (not shown in the figure), and an assembly component 21.

[0041] Specifically, the detection pool 11 of the kit is an impedance detection pool 11. The detection pool 11 is arranged in the box body and includes a front pool 110 and a rear pool 120. The rear pool 120 is arranged on one side of the front pool 110; the assembly component 21 includes a rear pool end 220 and a front pool end 210. The front pool end 210 is communicated with the front pool 110 through a microplate. One side of the rear pool end 220 far from the front pool end 210 is connected to the rear pool 120, and a flow channel is formed at the rear pool end 220; the flow channel includes a first flow channel 230 and a second flow channel 240. The first flow channel 230 and the second flow channel 240 are respectively distributed circumferentially along the rear pool end 220. The sample flow passes through the microplate, and the sample flow with bubbles flows into the first flow channel 230, and the rest of the sample flow flows into the second flow channel 240 and flows through the second flow channel 240 to the rear pool 120 to test the blood cell parameters of the sample flow under a preset electrical signal.

[0042] Wherein, the electrical signal can be a current signal or a voltage signal; the preset electrical signal can generally be a constant current signal or voltage signal, or an electrical signal with a signal fluctuation less than a preset threshold, which is not specifically limited herein.

[0043] In one embodiment, the kit further includes a front chamber 110 electrode (not shown in the figure) and a rear chamber 120 electrode (not shown in the figure). The front chamber 110 electrode is disposed on one side of the front chamber 110, and the rear chamber 120 electrode is disposed on one side of the rear chamber 120. The front chamber 110 electrode and the rear chamber 120 electrode are used to detect the voltage signal of the flow channel under a preset current.

[0044] Specifically, the front chamber 110 electrode and the rear chamber 120 electrode of the kit are used as conductors. The front chamber 110 electrode is usually located on one side of the front chamber 110. For example, the front chamber 110 electrode can be disposed at the bottom of the front chamber 110 or on the side of the front chamber 110 away from the rear chamber 120, so that the front chamber 110 electrode can contact the sample flow in the front chamber 110. The rear chamber 120 electrode is usually located on one side of the rear chamber 120. For example, the rear chamber 120 electrode can be disposed on the side of the rear chamber 120 away from the front chamber 110, or the rear chamber 120 electrode can be disposed in the rear chamber 120 and abutted against the assembly component 21. When the sample flow flows through the flow channel of the assembly component 21, the rear chamber 120 electrode, the front chamber 110 electrode, and the sample flow between the two form a current loop. The hematology analyzer can collect the voltage signal generated when the sample flow passes through the microporous plate, so as to characterize some characteristics of the blood cells according to the fluctuation of the voltage signal.

[0045] In one embodiment, a non-detection chamber 11 can also be provided on the box body of the kit. For example, the non-detection chamber 11 can be used to store reagents such as diluent, hemolytic agent, and cleaning solution required for detection, and can also be used to provide component supports such as pipette tips for the pipetting component of the hematology analyzer, so that the hematology analyzer can mix the reagents in the kit with the sample to be tested through the non-detection chamber 11 of the kit to prepare a sample flow suitable for impedance detection.

[0046] The embodiment of the present application also provides a hematology analyzer, which includes a detection seat, a power supply component, and a detection component. The detection seat is used to receive the kit according to any one of the above embodiments; the power supply component is disposed on the detection seat and is used to provide a preset current for the kit; the detection component is disposed on the detection seat, the sample flow flows through the flow channel of the kit, and the detection component is used to collect the voltage signal of the flow channel, so as to process the voltage signal and obtain the detection result of the sample flow.

[0047] Specifically, the electrodes of the front pool 110 and the rear pool 120 of the kit can be partially exposed outside the kit housing. After the detection base receives the kit, the power supply assembly is respectively docked with the electrodes of the front pool 110 and the rear pool 120, so that the power supply assembly provides a preset current for the kit. The detection assembly is arranged on the detection base. When the sample flows from the front pool 110 through the microplate into the flow channel and reaches the rear pool 120, due to the property of blood cells being poor conductors, the blood cells existing between the electrodes of the front pool 110 and the rear pool 120 will cause a change in resistance, and then a voltage signal is generated at both ends of the electrodes of the front pool 110 and the rear pool 120. The detection assembly can collect and process the fluctuations of the voltage signal in the flow channel through the signal processing circuit to obtain the blood cell detection result corresponding to the sample flow.

[0048] In the embodiment of the present application, since the kit has a first flow channel 230 and a second flow channel 240, the sample flow with bubbles flows into the first flow channel 230, and the remaining sample flow flows into the second flow channel 240 and flows through the second flow channel 240 to reach the rear pool 120. When the kit is assembled into the detection base for detection, the power supply assembly provides a constant detection current for the kit. The first flow channel 230 and the second flow channel 240 are equivalent to multiple parallel resistors. The second flow channel 240 can reduce the signal fluctuations caused by bubbles in the first flow channel 230, reduce the interference of bubbles when the detection assembly collects the signal fluctuations in the flow channel, and improve the detection accuracy of blood cell analysis.

[0049] Optionally, the second flow channel 240 of the kit includes a first second flow channel 240 and a second second flow channel 240. The detection assembly is used to test the first detection item for the sample flow flowing through the first second flow channel 240, or the detection assembly is used to test the second detection item for the sample flow flowing through the second second flow channel 240, and the first detection item and the second detection item are different.

[0050] Specifically, the first second flow channel 240 and the second second flow channel 240 are respectively located on both sides of the first flow channel 230. The detection component is used to test the first detection item for the sample flow passing through the first second flow channel 240, or the detection component is used to test the second detection item for the sample flow passing through the second second flow channel 240. When the user installs the assembly component 21 in the reagent kit, by adjusting the positions of the first second flow channel 240 and the second second flow channel 240, the first or the second second flow channel 240 can be used as the main flow channel for impedance testing, and the adjacent first flow channel 230 can be used as the secondary flow channel for impedance testing to weaken the interference of bubbles. It can be understood that by setting the first second flow channel 240 and the second second flow channel 240, the assembly component 21 of this embodiment can be applicable to the tests of different detection items, without the need to manufacture different molds to separately produce the assembly component 21 for the first detection item and the assembly component 21 for the second detection item, improving the convenience of production and facilitating the user to assemble the reagent kit.

[0051] Further, the first detection item is a white blood cell count test (White Blood Cell, WBC), and the second detection item is a red blood cell count test (Red Blood Cell, RBC).

[0052] Specifically, the detection component takes the first second flow channel 240 as the main flow channel for white blood cell count testing, and takes the second second flow channel 240 as the main flow channel for red blood cell count testing, so that the waste liquid can be stored in the rear pool when performing white blood cell count testing and red blood cell count testing through the reagent kit, reducing the manufacturing cost of the reagent kit.

[0053] The above are only the embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. An assembly component, characterized in that, applied to a kit, comprising: a front pool end, which is communicated with the front pool of the kit through micropores; a rear pool end, one side of the rear pool end far away from the front pool end is connected with the rear pool of the kit; wherein, the front pool end and the rear pool end are communicated to form a flow channel, the flow channel comprises a first flow channel and a second flow channel, the first flow channel and the second flow channel are respectively distributed circumferentially along the rear pool end, a sample flow passes through the micropores, the first flow channel is used for intercepting air bubbles in the sample flow, and the second flow channel is used for enabling the sample flow after intercepting the air bubbles to flow to the rear pool to test blood cell parameters of the sample flow.

2. The assembly component according to claim 1, characterized in that, the cross-sectional area of the first flow channel is larger than the cross-sectional area of the second flow channel.

3. The assembly component according to claim 2, characterized in that, the flow channel comprises at least two second flow channels, and the sum of the cross-sectional areas of all the second flow channels is larger than the cross-sectional area of the first flow channel.

4. The assembly component according to claim 1, characterized in that, the flow channel comprises a first second flow channel and a second second flow channel, and the first second flow channel and the second second flow channel are respectively located on both sides of the first flow channel.

5. The assembly component according to claim 4, characterized in that, the area of the region where the first second flow channel, the second second flow channel and the first flow channel are located on the rear pool end is less than or equal to half of the rear pool end.

6. The assembly component according to claim 1, characterized in that, a guiding surface extending from the front pool end to the rear pool end is arranged on the first flow channel, and the height of the side of the guiding surface close to the rear pool end is greater than the height of the side of the guiding surface close to the front pool end.

7. A kit, characterized in that, comprising: a box body; a detection pool, arranged in the box body, comprising a front pool and a rear pool, and the rear pool is arranged on one side of the front pool; a microporous plate, the assembly component according to any one of claims 1-6, the front pool end of the assembly component is communicated with the front pool through the micropores of the microporous plate, and one side of the rear pool end of the assembly component far away from the front pool end is connected with the rear pool.

8. The kit according to claim 7, characterized in that, the kit further comprises a front pool electrode and a rear pool electrode, the front pool electrode is arranged on one side of the front pool, the rear pool electrode is arranged on one side of the rear pool, and the front pool electrode and the rear pool electrode are used for detecting the voltage signal of the flow channel under a preset current.

9. A blood cell analyzer, characterized in that, comprising: a detection seat for receiving the kit according to any one of claims 7-8; a power supply component, arranged on the detection seat, for providing a preset current for the kit; a detection component, arranged on the detection seat, a sample flow passes through the flow channel of the kit, and the detection component is used for collecting the voltage signal of the flow channel to process the voltage signal and obtain the detection result of the sample flow.

10. The hematology analyzer according to claim 9, characterized in that, the second flow channel of the reagent kit comprises a first second flow channel and a second second flow channel, the detection component is configured to test a sample flow passing through the first second flow channel for a first detection item, or the detection component is configured to test a sample flow passing through the second second flow channel for a second detection item, and the first detection item is different from the second detection item.

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