阅读说明：本技术 清洗模块及具有其的样本分析仪 (Cleaning module and sample analyzer with same ) 是由 朱亮 童帅 易万贯 尹力 胡毅 班定平 于 2019-09-29 设计创作，主要内容包括：本发明提供了一种清洗模块及具有其的样本分析仪,其中,清洗模块,用于对装有磁珠复合物的反应杯中注入清洗液或抽取废液,包括：清洗模块主体；注液针组件,用于向反应杯中注入清洗液；抽废液针组件,抽废液针组件用于抽取反应杯中的废液；抽废液针组件包括安装座和设置在安装座上的抽废液针,抽废液针组件具有抽取废液的工作位置和清洗抽废液针的清洗位置。本发明的技术方案有效地解决了现有技术中的由于抽废液针清洗不到位带来的交叉污染的问题。(The invention provides a cleaning module and a sample analyzer with the same, wherein the cleaning module is used for injecting cleaning liquid or extracting waste liquid into a reaction cup filled with a magnetic bead compound, and comprises: cleaning the module main body; the liquid injection needle assembly is used for injecting cleaning liquid into the reaction cup; the waste liquid extracting needle assembly is used for extracting waste liquid in the reaction cup; the waste liquid extracting needle assembly comprises a mounting seat and a waste liquid extracting needle arranged on the mounting seat, and the waste liquid extracting needle assembly is provided with a working position for extracting waste liquid and a cleaning position for cleaning the waste liquid extracting needle. The technical scheme of the invention effectively solves the problem of cross contamination caused by the incomplete cleaning of the waste liquid extraction needle in the prior art.)

1. A cleaning module for injecting a cleaning solution or extracting a waste liquid into a reaction cup containing a magnetic bead complex, comprising:

cleaning the module main body;

a liquid injection needle assembly (20) for injecting a cleaning liquid into the reaction cup;

a waste liquid extraction needle assembly (30), wherein the waste liquid extraction needle assembly (30) is used for extracting waste liquid in the reaction cup; the waste liquid extracting needle assembly (30) comprises a mounting seat (31) and a waste liquid extracting needle (34) arranged on the mounting seat (31), and the waste liquid extracting needle assembly (30) is provided with a working position for extracting waste liquid and a cleaning position for cleaning the waste liquid extracting needle (34).

2. The cleaning module according to claim 1, wherein the waste liquid extracting needle assembly (30) further comprises a driving part (32) and a moving frame (33), the mounting seat (31) is fixedly mounted on the cleaning module body, the driving part (32) is fixedly mounted on the mounting seat (31), the moving frame (33) is connected with the driving part (32), and the waste liquid extracting needle (34) is fixedly mounted on the moving frame (33); the waste liquid extracting needle (34) is driven by the driving part (32) to move back and forth between the working position and the cleaning position.

3. A cleaning module according to claim 2, wherein the moving frame (33) comprises a first connecting rod and a second connecting rod, a first end of the second connecting rod being connected to the first connecting rod and a second end of the second connecting rod being connected to the driving portion (32).

4. A cleaning module according to claim 3, wherein the waste liquid extracting needles (34) comprise two, the first end of the second connecting rod is connected to the middle of the first connecting rod to form a T-shaped structure, and the two waste liquid extracting needles (34) are installed at both ends of the first connecting rod.

5. A cleaning module according to claim 3, characterized in that the moving rack (33) comprises a line support, which is arranged on the first connecting rod, and that the waste needle assembly (30) comprises a waste line, which is connected to the waste needle (34), and a waste pump, which is connected to the waste line.

6. The cleaning module of claim 5, wherein the waste extraction needle assembly (30) further comprises a sensor (36), the sensor (36) being disposed on a side of the waste extraction line adjacent to the waste extraction needle (34) for detecting liquid in the waste extraction line.

7. The cleaning module according to claim 1, wherein the injection needle assembly (20) comprises a fixing frame (21) and an injection needle (22), the injection needle (22) is fixed on the fixing frame (21), and the injection needle (22) is communicated with the cleaning solution through an injection system.

8. The cleaning module according to claim 7, further comprising a reaction cup module (10), wherein the reaction cup module (10) comprises a turntable with a through hole, the fixing frame (21) comprises a stand and a mounting arm, a first end of the stand is connected with the first bottom plate, a central axis of the turntable is located in the through hole, a second end of the stand passes through the through hole, a first end of the mounting arm is connected with a second end of the stand, and the liquid injection needle (22) is mounted at a second end of the mounting arm.

9. The cleaning module according to claim 8, wherein the line of the priming system is connected to the priming needle (22) through a through hole of the turntable.

10. The cleaning module of claim 8, wherein the plurality of mounting arms are spaced apart from the second end of the stand to radiate horizontally away from the second end of the stand.

11. The cleaning module according to claim 2, wherein the mounting seat (31) comprises a second bottom plate and a vertical plate, the second bottom plate is fixed on the cleaning module body, the vertical plate is fixed on the second bottom plate, the vertical plate is provided with an inverted U-shaped hole (35), the movable frame (33) comprises a connecting frame body and a connecting shaft arranged on the connecting frame body, and the connecting shaft passes through the inverted U-shaped hole (35) to be connected with the driving part (32), so that the connecting shaft can move along the track of the inverted U-shaped hole (35).

12. The cleaning module according to claim 11, wherein the driving part (32) comprises a driving motor (321) and a rotary driving block (322), the driving motor (321) is fixed on the mounting seat (31), the rotary driving block (322) is fixed on a rotating shaft of the driving motor (321), a slot is arranged on the rotary driving block (322), the connecting shaft is arranged in the slot through the inverted U-shaped hole (35), and the connecting shaft can move along the axis of the slot.

13. The cleaning module according to claim 1, further comprising a waste extraction needle cleaning system (40), wherein the waste extraction needle cleaning system (40) comprises a cleaning tank (41) and a cleaning pump, wherein an opening of the cleaning tank (41) faces upward, and wherein when the waste extraction needle (34) is in the cleaning position, the waste extraction needle (34) is located in the cleaning tank (41).

14. A sample analyser comprising a wash module, characterised in that the wash module is as claimed in any one of claims 1 to 13.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a cleaning module and a sample analyzer with the same.

Background

Taking a chemiluminescence immunoassay analyzer in a sample analyzer as an example, the chemiluminescence immunoassay technology is a high-sensitivity and high-specificity analysis instrument which is developed rapidly worldwide in recent years, is used for detecting various immunity indexes of samples such as blood, urine or other body fluids in a clinical laboratory, and is based on the principle that the antibody antigen reaction and the chemiluminescence are combined to achieve high specificity and high sensitivity. In the chemiluminescence analysis, the reaction solution in the reaction vessel needs to be separately cleaned in order to obtain more accurate measurement results. The general cleaning mode is to inject cleaning liquid into the reaction vessel and mix them uniformly, then to remove the waste liquid in the reaction vessel by using the waste liquid extraction needle assembly.

In a common cleaning mechanism, a liquid injection needle and a waste liquid extraction needle are relatively fixed and integrated with each other. When the waste liquid extracting needle is cleaned, a liquid injection needle is generally used for injecting cleaning liquid to the outer wall of the waste liquid extracting needle, so that the outer wall of the waste liquid extracting needle is washed. However, the needle tip of the waste liquid extraction needle and other positions are often not cleaned in place, and if the waste liquid extraction needle is used for extracting waste liquid, cross contamination is easily caused to subsequent reaction cups.

Disclosure of Invention

The invention mainly aims to provide a cleaning module and a sample analyzer with the same, so as to solve the problem of cross contamination caused by incomplete cleaning of a waste liquid extraction needle in the prior art.

In order to achieve the above object, according to one aspect of the present invention, there is provided a washing module for injecting a washing solution or extracting a waste solution into a reaction cup containing a magnetic bead complex, comprising: cleaning the module main body; the liquid injection needle assembly is used for injecting cleaning liquid into the reaction cup; the waste liquid extracting needle assembly is used for extracting waste liquid in the reaction cup; the waste liquid extracting needle assembly comprises a mounting seat and a waste liquid extracting needle arranged on the mounting seat, and the waste liquid extracting needle assembly is provided with a working position for extracting waste liquid and a cleaning position for cleaning the waste liquid extracting needle.

Furthermore, the waste liquid pumping needle assembly also comprises a driving part and a moving frame, the mounting seat is fixedly arranged on the cleaning module main body, the driving part is fixedly arranged on the mounting seat, the moving frame is connected with the driving part, and the waste liquid pumping needle is fixedly arranged on the moving frame; the waste liquid pumping needle is driven by the driving part to move back and forth between the working position and the cleaning position.

Further, the movable frame comprises a first connecting rod and a second connecting rod, the first end of the second connecting rod is connected to the first connecting rod, and the second end of the second connecting rod is connected with the driving portion.

Further, take out the waste liquid needle and include two, the first end of second connecting rod is connected and is formed T type structure in the middle part of head rod, and two are taken out the waste liquid needle and install the both ends at the head rod.

Further, the movable frame comprises a pipeline support, the pipeline support is arranged on the first connecting rod, the waste liquid pumping needle assembly comprises a waste liquid pumping pipeline and a waste liquid pumping pump, the waste liquid pumping pipeline is connected with the waste liquid pumping needle, and the waste liquid pumping pump is connected with the waste liquid pumping pipeline.

Further, the waste liquid extracting needle assembly further comprises a sensor, and the sensor is arranged on one side, close to the waste liquid extracting needle, of the waste liquid extracting pipeline so as to detect liquid in the waste liquid extracting pipeline.

Further, annotate the liquid needle subassembly and include mount and annotate the liquid needle, annotate the liquid needle and fix on the mount, annotate the liquid needle and be linked together through annotating the liquid system with the washing liquid.

Further, the cleaning module still includes the reaction cup module, and the reaction cup module is including the carousel that has the via hole, and the mount includes grudging post and installation arm, and the first end of grudging post links to each other with first bottom plate, and the central axis of carousel is located the via hole, and the via hole is passed to the second end of grudging post, and the first end of installation arm links to each other with the second end of grudging post, annotates the liquid needle and installs the second end at the installation arm.

Further, the pipeline of the liquid injection system passes through the turntable through hole to be connected with the liquid injection needle.

Furthermore, the installation arms are multiple, and the multiple installation arms horizontally radiate from the second end of the stand to the direction far away from the second end of the stand.

Further, the mount pad includes second bottom plate and riser, and the second bottom plate is fixed in the cleaning module main part, and the riser is fixed on the second bottom plate, and the riser has the type of falling U hole, removes the frame and includes the link main part and sets up the connecting axle in the link main part, and the connecting axle passes the type of falling U hole and links to each other with the drive division to make the connecting axle can follow the orbit removal in type of falling U hole.

Furthermore, the driving part comprises a driving motor and a rotary driving block, the driving motor is fixed on the mounting seat, the rotary driving block is fixed on a rotating shaft of the driving motor, a slot is formed in the rotary driving block, the connecting shaft penetrates through the inverted U-shaped hole and is arranged in the slot, and the connecting shaft can move along the axis of the slot.

Further, the cleaning module still includes and takes out waste liquid needle cleaning system, takes out waste liquid needle cleaning system and includes washing tank and scavenging pump, and the opening of washing tank is up, and when taking out waste liquid needle and being located the washing position, take out waste liquid needle and be located the washing tank.

According to another aspect of the present invention, there is provided a sample analyzer comprising a cleaning module as described above.

By applying the technical scheme of the invention, the liquid injection needle assembly injects cleaning liquid into the reaction cup, then the waste liquid extraction needle assembly is positioned at the working position for extracting the waste liquid, the waste liquid in the reaction cup is extracted, and the waste liquid extraction needle assembly is positioned at the cleaning position for cleaning after the waste liquid in the reaction cup is extracted, so that the waste liquid extraction needle is cleaned cleanly by adopting a single cleaning mode, the waste liquid residual on the waste liquid extraction needle is greatly reduced, and the cross pollution caused by the waste liquid extraction needle can be effectively avoided. The technical scheme of the invention effectively solves the problem of cross contamination caused by the incomplete cleaning of the waste liquid extraction needle in the prior art.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a schematic perspective view of an embodiment of a cleaning module according to the present invention;

FIG. 2 shows a schematic top view of the cleaning module of FIG. 1;

FIG. 3 shows a perspective view of the waste extraction needle assembly of the cleaning module of FIG. 1;

FIG. 4 shows a schematic perspective view of another angle of the waste withdrawal needle assembly of FIG. 3; and

FIG. 5 shows a schematic top view of the injection needle assembly of the cleaning module of FIG. 1.

Wherein the figures include the following reference numerals:

10. a reaction cup module; 20. an injection needle assembly; 21. a fixed mount; 22. injecting liquid needle; 30. a waste liquid extraction needle assembly; 31. a mounting seat; 32. a drive section; 321. a drive motor; 322. rotating the driving block; 33. a movable frame; 34. a waste liquid extraction needle; 35. an inverted U-shaped hole; 36. a sensor; 40. a waste liquid extraction needle cleaning system; 41. and (4) cleaning the tank.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, the thicknesses of layers and regions are exaggerated for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

As shown in fig. 1 to 5, the washing module of this embodiment is used for injecting a washing solution or extracting a waste solution into the reaction cup containing the magnetic bead complex. The cleaning module includes: cleaning the module body, the liquid injection needle assembly 20 and the waste liquid extraction needle assembly 30. Used for injecting cleaning liquid into the reaction cup. The waste liquid extracting needle assembly 30 is used for extracting waste liquid in the reaction cup; the waste liquid extracting needle assembly 30 includes a mounting seat 31 and a waste liquid extracting needle 34 disposed on the mounting seat 31, and the waste liquid extracting needle assembly 30 has an operating position for extracting waste liquid and a cleaning position for cleaning the waste liquid extracting needle.

By applying the technical scheme of the embodiment, the waste liquid extracting needle assembly 30 extracts the liquid in the reaction cup, and then the liquid injection needle assembly 20 injects the cleaning liquid into the reaction cup. The waste liquid extracting needle assembly 30 is cleaned after the waste liquid in the reaction cup is extracted, the waste liquid extracting needle 34 can be cleaned thoroughly in a single cleaning mode, the residual waste liquid on the waste liquid extracting needle 34 is greatly reduced, and therefore cross contamination caused by the waste liquid extracting needle can be effectively avoided. The technical scheme of this embodiment has solved the problem of cross contamination because take out the waste liquid needle and wash not in place among the prior art effectively.

In addition, the fixing frame 21 of the injection needle assembly 20 is fixed on the reaction cup module 10, so that the injection needle 22 and the injection system do not need to be moved frequently, the damage speed of the injection system is greatly reduced, the service cycle of the injection needle assembly is prolonged, and the use cost is further reduced. The liquid injection system comprises a liquid injection pipeline and a liquid injection pump, wherein the liquid injection pump is arranged on the liquid injection pipeline, of course, the liquid injection system can also comprise an electromagnetic valve and a flowmeter as required, and the electromagnetic valve and the flowmeter are both arranged on the liquid injection pipeline.

As shown in fig. 3 and 4, in the solution of the present embodiment, the waste liquid extracting needle assembly 30 further includes a driving portion 32 and a moving frame 33, the mounting seat 31 is mounted and fixed on the cleaning module body, the driving portion 32 is fixed on the mounting seat 31, the moving frame 33 is connected to the driving portion 32, and the waste liquid extracting needle 34 is fixed on the moving frame 33; the waste liquid extracting needle 34 is driven by the driving portion 32 to move back and forth between the working position and the cleaning position. The movable frame 33 is provided to facilitate the movement of the waste liquid extracting needle 34, and the driving portion 32 is provided to facilitate the movement of the waste liquid extracting needle 34. Specifically, the driving portion 32 includes a driving motor, the processing cost of the driving motor is low, and the arrangement of the moving frame 33 can convert the rotation of the driving motor into the regular movement of the waste liquid extracting needle 34.

As shown in fig. 3 and 4, in the solution of the present embodiment, the movable frame 33 includes a first connecting rod and a second connecting rod, a first end of the second connecting rod is connected to the first connecting rod, and a second end of the second connecting rod is connected to the driving portion 32. The structure has the advantages of lower processing cost, convenient arrangement and compact structure, and the moving frame 33 is more accurate when driving the waste liquid extracting needle 34 to move. It should be noted that the connection between the second end of the second connecting rod and the driving portion 32 includes direct connection or indirect connection, for example, the second connecting rod of the embodiment is indirectly connected to the driving portion 32 through a vertical plate, a sliding block, and a connecting shaft. Specifically, the second end of second connecting rod links to each other with the riser, is provided with the horizontal slide on the riser, and the slider is located the horizontal slide, is provided with vertical slide on the riser, and the slider cooperatees with vertical slide simultaneously, and the connecting axle setting has guaranteed the horizontal migration and the vertical removal that remove frame 33 through foretell restraint on the riser.

As shown in fig. 3 and 4, in the solution of the present embodiment, the two waste liquid extracting needles 34 include two, the first end of the second connecting rod is connected to the middle of the first connecting rod to form a T-shaped structure, and the two waste liquid extracting needles 34 are installed at both ends of the first connecting rod. The above structure improves the waste liquid extracting efficiency of the waste liquid extracting needle assembly 30. It should be noted that, in the present embodiment, each waste liquid extraction needle assembly 30 includes two waste liquid extraction needles 34, and in the present embodiment, there are two waste liquid extraction needle assemblies 30. The first connecting rod may be straight, and the axis of the second connecting rod is perpendicular to the axis of the first connecting rod, but the second connecting rod may also be arc-shaped. The liquid injection needles 22 are disposed in one-to-one correspondence with the waste liquid extraction needles, the liquid injection needles 22 are located at the upstream of the corresponding waste liquid extraction needles (the upstream refers to the direction of rotation of the turntable, that is, the reaction cup finishes extracting waste liquid, the turntable continues to rotate by one position, and the corresponding liquid injection needles 22 inject liquid into the reaction cup), four liquid injection needles 22, and four waste liquid extraction needles 34.

As shown in fig. 3 and 4, in the solution of the present embodiment, the movable frame 33 includes a pipeline bracket, the pipeline bracket is disposed on the first connecting rod, the waste liquid pumping needle assembly 30 includes a waste liquid pumping pipeline and a waste liquid pumping pump, the waste liquid pumping pipeline is connected to the waste liquid pumping needle 34, and the waste liquid pumping pump is connected to the waste liquid pumping pipeline. The setting of pipeline support makes the fixed of drawing waste liquid pipeline more stable, can set up the pipeline support according to the characteristics of drawing waste liquid pipeline moreover, for example the drawing waste liquid pipeline can not have concave type, just so need through the rational arrangement of pipeline support for the drawing waste liquid pipeline can not produce the spill, can not gather liquid in the drawing waste liquid pipeline like this. The pipeline support can include two pipeline supports that set up on the head rod, and the pipeline support still includes a plurality of pipeline supports that set up on other positions in order to fix the liquid pipeline of wasting discharge.

As shown in fig. 3 and 4, in the present embodiment, the waste liquid extracting needle assembly 30 further includes a sensor 36, and the sensor 36 is disposed on a side of the waste liquid extracting line close to the waste liquid extracting needle 34 to detect the liquid in the waste liquid extracting line. Through the detection of the sensor 36 to the liquid in the waste liquid pumping pipeline, the operator can conveniently know whether the waste liquid is pumped out completely.

As shown in fig. 3 and 4, in the solution of the present embodiment, the waste liquid extracting needle 34 is connected to the waste liquid system through the liquid extracting system. The liquid drawn by the waste extraction needle 34 flows through the waste extraction needle into the waste system, which facilitates cleaning of the interior of the waste extraction needle 34.

As shown in fig. 1 and 5, in the technical solution of the present embodiment, the injection needle assembly 20 includes a fixing frame 21 and an injection needle 22, the injection needle 22 is fixed on the fixing frame 21, and the injection needle 22 is communicated with the cleaning solution through an injection system. The fixing frame 21 is convenient for fixing the liquid injection needle 22, and the liquid injection needle 22 is communicated with the cleaning liquid through a liquid injection system, so that the liquid injection needle 22 is not easy to be polluted. The injection needle assembly 20 does not need to be moved during operation, and the fixing frame 21 fixes the injection needle 22.

As shown in fig. 1 and fig. 5, in the technical solution of this embodiment, the reaction cup module 10 includes a turntable with a through hole, the fixing frame 21 includes a stand and a mounting arm, a first end of the stand is connected to the first bottom plate, a central axis of the turntable is located in the through hole, a second end of the stand passes through the through hole, a first end of the mounting arm is connected to a second end of the stand, and the liquid injection needle 22 is mounted at the second end of the mounting arm. The structure is compact and the weight is light. The stand passes through the through hole, and because the central axis is positioned in the through hole, when the turntable rotates, the stand does not need to move, thereby greatly prolonging the service cycle of the fixing frame 21 and the liquid injection system. It should be noted that the cuvette module 10 is a component of the sample analyzer, and the cleaning module needs to be used in cooperation with the cuvette module 10.

As shown in fig. 1, in the technical solution of this embodiment, a pipeline of the liquid injection system passes through a turntable through hole to be connected with a liquid injection needle 22. The above-described line of the injection system refers to a line of the injection system connected to the injection needle 22. Therefore, the pipeline of the liquid injection system does not need to be moved frequently, and the service cycle of the liquid injection system is prolonged.

As shown in fig. 1 and 5, in the solution of the present embodiment, there are a plurality of mounting arms, and the plurality of mounting arms radiate horizontally from the second end of the stand in a direction away from the second end of the stand. The structure of a plurality of installation arms has improved the work efficiency who annotates the liquid widely.

As shown in fig. 1, in the solution of the present embodiment, the injection needle 22 is communicated with the cleaning liquid through an injection system. The liquid injection needle 22 has a special liquid injection system, and the liquid injection needle 22 with the structure is not easy to be polluted.

As shown in fig. 1 to 5, in the solution of the present embodiment, a fixing frame 21 is fixed on a first base plate, and an injection needle 22 is fixed on the fixing frame 21. The liquid injection needle 22 and the waste liquid extraction needle 34 are arranged separately, so that the arrangement structure is flexible. Of course, as another embodiment of the present application, the fixing frame 21 is fixed to the mounting seat 31, and the injection needle 22 is fixed to the fixing frame 21. Such a liquid injection needle 22 and a waste liquid extraction needle 34 are provided integrally.

As shown in fig. 1 to 5, in the technical solution of this embodiment, the mounting seat 31 includes a second bottom plate and a vertical plate, the second bottom plate is fixed on the cleaning module main body, the vertical plate is fixed on the second bottom plate, the vertical plate has an inverted U-shaped hole 35, the moving frame 33 includes a connecting frame main body and a connecting shaft disposed on the connecting frame main body, and the connecting shaft passes through the inverted U-shaped hole 35 to be connected with the driving portion 32, so that the connecting shaft can move along the track of the inverted U-shaped hole 35. This eliminates the need to disassemble the movement of the moving frame 33, and the movement of the moving frame 33 is performed at once with high efficiency. For example, the movement path of the movable frame 33 can be divided into horizontal movement and vertical movement, which requires two driving members, and the movement is divided into multiple steps, which results in a complicated structure, such as an increase in the number of driving members, on the one hand, and a longer operation time of the movable frame, which reduces efficiency.

As shown in fig. 3, in the technical solution of the present embodiment, the driving portion 32 includes a driving motor 321 and a rotation driving block 322, the driving motor 321 is fixed on the mounting base 31, the rotation driving block 322 is fixed on a rotating shaft of the driving motor 321, a slot is provided on the rotation driving block 322, the connecting shaft passes through the inverted U-shaped hole 35 and is disposed in the slot, and the connecting shaft can move along an axis of the slot. The rotary driving block 322 drives the movable frame 33, and the movable frame 33 moves according to a specified track through the joint constraint of the slot and the inverted U-shaped hole 35 on the connecting shaft, so that the movable frame 33 moves stably and accurately. Specifically, in the technical solution of this embodiment, two bearings are disposed on the connecting shaft, one of the bearings is respectively located between the inverted U-shaped hole 35 and the connecting shaft, and the other bearing is located between the slot and the connecting shaft. The friction force is reduced due to the arrangement of the bearing, and the connecting shaft and the inverted U-shaped hole 35 or the connecting shaft and the groove are prevented from being clamped.

As shown in fig. 1 and fig. 2, in the solution of the present embodiment, the waste liquid pumping needle cleaning system 40 includes a cleaning tank 41, a cleaning pipeline and a cleaning pump, an opening of the cleaning tank 41 faces upward, and when the waste liquid pumping needle 34 is located at the cleaning position, the waste liquid pumping needle 34 is located in the cleaning tank 41. When the waste liquid pumping needle 34 is cleaned, the waste liquid pumping needle 34 is moved to the cleaning position, the waste liquid pumping needle is located in the cleaning groove 41, cleaning liquid is contained in the cleaning groove 41, the waste liquid pumping needle 34 is located in the cleaning groove 41 and used for pumping the cleaning liquid outwards, and therefore the outer wall and the inner wall of the waste liquid pumping needle 34 can be cleaned. Specifically, the outer wall of the waste liquid extracting needle 34 is cleaned by spraying liquid through the cleaning tank 41 to wash the outer wall. The inner wall of the waste liquid extracting needle 34 is cleaned at all positions such as the outer wall, the inner wall, and the needle tip of the waste liquid extracting needle 34 by extracting the cleaning liquid in the cleaning tank 41 from the waste liquid extracting needle into the waste liquid system. The cleaning tank 41 further has a liquid outlet and a liquid inlet, the liquid inlet is located on the side wall of the cleaning tank 41, and the liquid outlet is located on the bottom wall of the cleaning tank 41. The first end of the cleaning pipeline is connected with the liquid inlet, and the cleaning pump is positioned at the second end of the cleaning pipeline.

The application also provides a sample analyzer including a cleaning module. The cleaning module is the cleaning module.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.