CN217846159U - Reusable liquid detection device - Google Patents

Abstract

The application provides a reusable liquid detection device, which comprises a bearing seat, a detection electrode and an extrusion piece, wherein the bearing seat is provided with a first surface and a second surface, a groove is formed in the first surface, a liquid flow channel is formed at the bottom of the groove, and the liquid flow channel is communicated to the second surface; the detection electrode is arranged corresponding to the second surface and used for detecting the liquid entering or flowing out of the liquid flow channel; the extrusion piece is arranged at the opening of the groove and used for extruding the liquid bag arranged in the groove so that the liquid in the liquid bag flows out and enters the liquid flow channel. The application provides a used repeatedly liquid detection device forms the recess and forms the liquid runner that communicates recess and second surface bottom the recess through the first surface that bears the seat, arranges the liquid package in the recess through the extruded piece extrusion of locating groove opening part for liquid in the liquid package can flow out and flow into the liquid runner, can avoid injecting into the loaded down with trivial details nature of liquid operation alone at every turn, in order to improve measurement of efficiency.

Description

Reusable liquid detection device

Technical Field

The application relates to the technical field of medical equipment, in particular to a reusable liquid detection device.

Background

Test cards for medical testing, which are widely used in the medical industry, integrate test electrodes for testing a test fluid (blood). Wherein, the detection card need inject reagent liquid alone in the testing process, and complex operation is unfavorable for promoting efficiency of software testing.

SUMMERY OF THE UTILITY MODEL

This application aims at providing a used repeatedly liquid detection device to solve the detection card and need inject reagent liquid alone in the test procedure, complex operation and measurement of efficiency are low defect.

The application provides a reusable liquid detection device, which comprises a bearing seat, a detection electrode and an extrusion piece, wherein the bearing seat is provided with a first surface and a second surface, a groove is formed in the first surface, a liquid flow channel is formed at the bottom of the groove, and the liquid flow channel is communicated to the second surface; the detection electrode is arranged corresponding to the second surface and is used for detecting the liquid entering or flowing out of the liquid flow channel; the extrusion piece is arranged at the opening of the groove and used for extruding the liquid bag arranged in the groove, so that the liquid in the liquid bag flows out and enters the liquid flow channel.

According to the reusable liquid detection device, the groove is formed in the first surface of the bearing seat, the liquid flow channel communicated with the groove and the second surface is formed at the bottom of the groove, and the liquid bag arranged in the groove is further extruded by the extrusion piece arranged at the opening of the groove, so that liquid in the liquid bag can flow out of the groove and flow into the liquid flow channel; meanwhile, the detection device is provided with the detection electrode corresponding to the second surface, so that liquid entering or flowing out of the liquid flow channel can be detected, the complexity of liquid injection operation at each time can be avoided, and the measurement efficiency is improved.

Drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the drawings required to be used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a schematic diagram of a reusable liquid detection apparatus according to some embodiments of the present application;

FIG. 2 is a schematic structural view of an extrusion according to some embodiments of the present application;

FIG. 3 is a schematic illustration of an extrusion of further embodiments of the present application;

FIG. 4 is a schematic view of a reusable liquid testing device according to further embodiments of the present application;

FIG. 5 is a schematic view of another embodiment of a reusable liquid testing device of the present application;

FIG. 6 is a schematic illustration of a reusable liquid testing device according to further embodiments of the present application;

FIG. 7 is a schematic view of an extrusion of further embodiments of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a reusable liquid detecting apparatus 100 according to some embodiments of the present disclosure. The reusable liquid detecting apparatus 100 can generally include a carrier 10, and a testing board 20 and an extrusion member 30 disposed on the carrier 10, i.e., the carrier 10 can be used to carry the testing board 20 and the extrusion member 30.

It is understood that in the embodiment of the present application, all directional indications (such as upper, lower, left, right, front, and rear … …) are used only for explaining the relative positional relationship between the components, the motion situation, and the like in a certain posture (as shown in the drawing), and if the certain posture is changed, the directional indication is changed accordingly.

The carrier 10 may be made of a hard material such as plastic, resin, or polymer. For example, the supporting base 10 may be made of ABS (Acrylonitrile Butadiene Styrene plastic), PDMS (Polydimethylsiloxane), PC (Polycarbonate), PMMA (Polymethyl methacrylate), PS (General purpose polystyrene), PP (Polypropylene), COC (polymers of cyclic olefin copolymer), etc., and may be formed by injection molding, numerical control machine processing, or 3D printing, etc.

The bearing seat 10 has a first surface 101 and a second surface 102, and the first surface 101 and the second surface 102 may be two surfaces that are disposed on the back of the bearing seat 10 or disposed opposite to each other, or two surfaces that are disposed adjacent to each other, and may be flexibly defined according to actual needs, which is not described in detail. The embodiment of the present application is exemplified by using the first surface 101 and the second surface 102 as two opposite surfaces of the carrier 10, but not limited thereto.

Further, the first surface 101 is formed with a groove 110, and the pressing member 30 is provided at an opening of the groove 110 for pressing the liquid pack 50 placed in the groove 110 to allow the liquid in the liquid pack 50 to flow out. Test board 20 is disposed corresponding to second surface 102, and a side of test board 20 close to second surface 102 is provided with a detecting electrode 210, i.e. detecting electrode 210 is disposed corresponding to second surface 102. The bottom of the groove 110 has a liquid channel 120, the liquid channel 120 is connected to the second surface 102, the liquid flowing out of the liquid bag 50 can enter the liquid channel 120, and the detecting electrode 210 detects the liquid entering or flowing out of the liquid channel 120.

In an embodiment, the testing board 20 can be attached to the second surface 102 of the carrier 10, or the testing board 20 can be embedded in the second surface 102 of the carrier 10. For example, second surface 102 can be a complete plane, and test plate 20 can be attached to second surface 102 over its entire surface, such that detection electrodes 210 can be exposed in liquid flow channels 120; alternatively, second surface 102 can have a groove-like structure formed thereon, into which test plate 20 is embedded (as shown in FIG. 1) so that detection electrode 210 can be exposed to liquid flow channel 120. The detecting electrode 210 is disposed corresponding to the second surface 102 and exposed in the liquid channel 120, so that the detecting electrode 210 can detect the liquid entering or exiting the liquid channel 120.

The test board 20 can be fixed to the carrier base 10 by screwing, inserting, fastening, bonding, welding, or the like. For example, the test board 20 can be fixed to the carrier 10 by bolts or screws.

Specifically, liquid flow channel 120 may be a hole-like structure penetrating the bottom of groove 110, such that one end of liquid flow channel 120 may communicate with the inner space of groove 110 and the other end is disposed adjacent to test plate 20. The liquid channel 120 may have a straight hole or a curved hole.

In one embodiment, a dam 220 is disposed on the testing board 20, and the dam 220 surrounds the periphery of the detecting electrode 210. Opposite sides of dam 220 abut test board 20 and second surface 102, respectively, to define a solution space 201. The dam 220 further surrounds the outer periphery of the end of the liquid channel 120 on the second surface 102 to form a closed solution space 201. The liquid flow path 120 communicates with the solution space 201, and the detection electrode 210 is exposed to the solution space 201 so that the detection electrode 210 can detect the liquid flowing from the liquid flow path 120 into the solution space 201.

The box dam 220 may be made of rubber, silica gel, or other elastic material, so that the test board 20 and the carrier base 10 can be sealed in the solution space 201 in an interference fit manner when the box dam 220 is clamped in cooperation.

According to the reusable liquid detection device, the groove is formed in the first surface of the bearing seat, the liquid flow channel communicated with the groove and the second surface is formed at the bottom of the groove, and the liquid bag arranged in the groove is further extruded by the extrusion piece arranged at the opening of the groove, so that liquid in the liquid bag can flow out of the groove and flow into the liquid flow channel; meanwhile, the detection device is provided with the detection electrode corresponding to the second surface, so that liquid entering or flowing out of the liquid flow channel can be detected, the complexity of liquid injection operation at each time can be avoided, and the measurement efficiency is improved.

The "reusable liquid detector" may be referred to as a "detection card" or a "blood gas detection card". The reusable liquid detection device can be matched with a blood gas analysis device to be used for measuring parameters such as pH value, hematocrit, ion concentration (K +, na +, cl-, ca2 +), glucose, lactic acid, O2, CO2 partial pressure and the like in a blood sample. The reusable liquid detection device can generally perform the parameter measurement by an electrochemical method or an alternating current impedance method.

Among them, the "blood gas analyzing apparatus" may also be called a "blood gas analyzer" or a "blood gas biochemical analyzer" which utilizes a blood gas analyzing technique. The blood gas analysis technology is applied to blood gas analysis equipment, can know the respiratory function and the acid-base balance state of a human body by measuring the concentration of H < + > in a blood sample, gas (mainly CO2, O2 and the like) dissolved in the blood and other parameters, and can directly reflect the pulmonary ventilation function and the acid-base balance state of the pulmonary ventilation function, and the adopted sample is usually the blood sample.

Referring to fig. 2 and 3, fig. 2 is a schematic diagram of extrusion 30 in some embodiments of the present application, and fig. 3 is a schematic diagram of extrusion 30 in other embodiments of the present application. The pressing member 30 generally includes a connection portion 310 and a pressing portion 320 provided at one side of the connection portion 310, the connection portion 310 is configured to position the pressing member 30 at the opening of the groove 110, and the pressing portion 320 extends from the connection portion 310 into the groove 110 and is configured to press the liquid pack 50 so that the liquid in the liquid pack 50 can flow out.

The connecting portion 310 may have a plate shape (as shown in fig. 2) or a ring shape (as shown in fig. 3), and covers the opening of the groove 110 to position and mount the pressing member 30. The pressing portion 320 is disposed on a side of the connecting portion 310 close to the second surface 102 and is accommodated in the groove 110 for pressing the liquid bag 50 disposed in the groove 110.

As shown in fig. 2, when the connection portion 310 has a plate shape, the pressing portion 320 may be caused to press the liquid pack 50 by pressing the connection portion 310. As shown in fig. 3, when the connection part 310 has a ring shape, the pressing part 320 may be at least partially exposed to the ring-shaped hollow region of the connection part 310, so that the pack 50 may be pressed by directly pressing the pressing part 320.

The extruding member 30 may be made of rubber or silicon rubber or other materials having certain elasticity. Wherein the extrusion 30 may directly form the connection part 310 and the extrusion part 320 through an integral molding process (e.g., injection molding). Of course, in other embodiments, the connecting portion 310 and the pressing portion 320 may be assembled into the pressing member 30 after being separately molded, and thus, a detailed description thereof will be omitted.

In one embodiment, the recess 110 of the carrier 10 generally includes a bottom 111 and a side 112 extending from an edge of the bottom 111, and the bottom 111 and the side 112 cooperate to form a space of the recess 110 for accommodating the liquid bag 50. Specifically, the side of the side portion 112 facing away from the bottom portion 111 encloses an opening forming the recess 110, and the bottom portion 111 is provided with the liquid flow passage 120 described in the previous embodiments. Further, the connecting portion 310 of the pressing member 30 is disposed spaced apart from the bottom portion 111 and connects the side portions 112.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a reusable liquid detecting apparatus 100 according to another embodiment of the present application. The embodiments of the present application differ from the foregoing embodiments in that: the direction of extrusion of the packet 50 by the extrusion member 30 is different, i.e., the direction of opening of the groove 110 is different.

Specifically, the groove 110 is formed inside the carrier 10, the opening of the groove 110 is formed on the side portion 112 of the groove 110, and the connecting portion 310 covers the opening of the groove 110 to position and mount the pressing member 30. The connecting portion 310 is connected to one side portion 112, and the pressing portion 320 is disposed on one side of the connecting portion 310 close to the other opposite side portion 112, and at least partially accommodated in the groove 110, so as to press the liquid bag 50 disposed in the groove 110. It can be understood that, for technical features that are not described in detail in the embodiments of the present application, reference may be made to the detailed description in the foregoing embodiments, and therefore, detailed description is not repeated here.

The utility model provides a used repeatedly liquid detection device, through the different side assembly pressing pieces that bear the seat to richen experience pressing when pressing the liquid package.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a reusable liquid detecting apparatus 100 according to another embodiment of the present application. The reusable liquid detection device 100 may further include a cover body 60 covering the opening of the groove 110, the connection portion 310 of the pressing member 30 is connected to the cover body 60 and spaced from the bottom of the groove 110, and the pressing portion 320 of the pressing member 30 is configured to press the liquid pack 50 placed in the groove 110, so that the liquid in the liquid pack 50 flows out. The outer perimeter of the cover 60 is generally shaped to match the shape of the opening of the recess 110 to provide a better appearance of the test card 200.

Specifically, the connecting portion 310 is disposed on a side of the cover 60 near the bottom of the groove 110, and the pressing portion 320 is disposed on a side of the connecting portion 310 away from the cover 60. Wherein the cover body 60 is provided with a window 610 communicating with the groove 110 to expose the connection part 310 or the pressing part 320 of the pressing member 30 to facilitate the pressing operation. That is, when the pressing member 30 is in the structure shown in fig. 2, the window 610 of the cover body 60 exposes the connection portion 310 of the pressing member 30; when the pressing member 30 is in the structure as shown in fig. 3, the window 610 of the cover body 60 exposes the pressing portion 320 of the pressing member 30. The cover body 60 can be fixedly connected to the carrier base 10 by means of screwing, inserting, fastening, welding, bonding, etc., and the connecting portion 310 can be fixedly connected to the cover body 60 by means of screwing, inserting, fastening, welding, bonding, etc.

It can be understood that, for technical features that are not described in detail in the embodiments of the present application, reference may be made to the detailed description in the foregoing embodiments, and therefore, detailed description is not repeated here.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a reusable liquid detecting apparatus 100 according to another embodiment of the present application. The reusable liquid detecting device 100 may further include a cover body 60 covering the opening of the recess 110, the connecting portion 310 of the extruding member 30 is connected to the cover body 60 and spaced from the bottom of the recess 110, and the extruding portion 320 of the extruding member 30 is used for extruding the liquid bag 50 placed in the recess 110, so as to allow the liquid in the liquid bag 50 to flow out.

Specifically, the connecting portion 310 is disposed on a side of the cover 60 away from the bottom of the groove 110, and the pressing portion 320 penetrates through the cover 60 and extends into the groove 110 to press the liquid bag 50. The cover 60 has a window 610 communicating with the groove 110, and the surface of the cover 60 facing away from the bottom of the groove 110 has a mounting groove 620 communicating with the window 610. The mounting groove 620 surrounds at least a portion of an outer circumference of the window 610. The connection portion 310 of the pressing member 30 is disposed in the mounting groove 620, and the pressing portion 320 is disposed through the window 610 to extend into the groove 110.

The mounting groove 620 may be an annular groove surrounding the outer periphery of the window 610, or may be a groove adjacent to a portion of the outer periphery of the window 610. Correspondingly, the connection part 310 may be in a ring shape or a lug shape, i.e., the connection part 310 is adapted to the shape of the mounting groove 620.

Preferably, the connecting portion 310 has a substantially annular shape and is inserted into the mounting groove 620, and in this case, the mounting groove 620 is an annular groove surrounding the outer periphery of the window 610. The pressing portion 320 generally includes a circular wall 320a extending from the connecting portion 310 and penetrating the window 610, and an end of the circular wall 320a facing away from the connecting portion 310 is closed. The annular connecting portion 310 has a hollow structure, and the annular wall 320a extends from an edge of the hollow structure and penetrates through the window 610.

In an embodiment, the pressing member 30 may further include a force receiving portion 330 suspended in the window 610, the force receiving portion 330 is spaced apart from the connecting portion 310, and the pressing portion 320 is connected to the force receiving portion 330 and the connecting portion 310, respectively. Specifically, the force-receiving portion 330 is suspended in the window 610 and exposed outside the cover 60, so that the force-receiving portion 330 is pressed to cause the pressing portion 320 to press the liquid bag 50. The pressing portion 320 may be an annular structure, one end of the pressing portion 320 facing away from the bottom of the groove 110 is connected to the force-receiving portion 330 and the connecting portion 310, and one end of the pressing portion near the bottom of the groove 110 is configured to abut against the liquid bag 50, so that when the force-receiving portion 330 receives external force to press, the pressing portion 320 can press the liquid bag 50.

Referring to fig. 7, fig. 7 is a schematic diagram of an extrusion 30 according to further embodiments of the present application. The connection part 310 of the extrusion member 30 has a ring shape and has a ring-shaped hollow area, the force receiving part 330 is disposed in the ring-shaped hollow area of the connection part 310, and the extrusion parts 320 are respectively connected to the force receiving part 330 and the connection part 310. In other words, the connecting portion 310 and the force-receiving portion 330 are disposed at an interval on a side of the cover 60 away from the liquid pack 50, and the pressing portion 320 is disposed through the window 610 of the cover 60 and used for pressing against the liquid pack 50. When an external force is applied to the force receiving portion 330, the pressing portion 320 can be caused to apply a force to the liquid pack 50, so that the liquid in the liquid pack 50 flows out.

Wherein the connecting portion 310 is configured to fix the pressing member 30 to the cover body 60. The connecting portion 310 can be fixed to the cover 60 by screwing, inserting, fastening, welding, or adhering. The forced portion 330 is configured to cause the pressing portion 320 to press the liquid bag 50 under an external force, so that the liquid bag 50 is broken by the external force, and the liquid in the liquid bag 50 can flow out and into the liquid flow channel 120.

In one embodiment, a mounting groove 620 is formed on a side of the cover body 60 facing away from the liquid bag 50, and the mounting groove 620 surrounds at least a portion of an outer periphery of the first extrusion port 701 and is in communication with the first extrusion port 701. The connection portion 310 is disposed in the mounting groove 620 to achieve mounting positioning. The force-receiving portion 330 is suspended at the first squeezing opening 701 so as to cause the squeezing portion 320 to squeeze the liquid bag 50 when a force is applied. The surface of the connecting portion 310 facing away from the receiving groove 501 and the surface of the cover 60 facing away from the receiving groove 501 are substantially coplanar, so that the test card 200 has better appearance.

The pressing portion 320 is disposed on one side of the connecting portion 310 close to the liquid bag 50, and is connected to the connecting portion 310 and the force-receiving portion 330. In one embodiment, the cross section of the pressing portion 320 is substantially U-shaped or V-shaped, the opening portions of the U-shaped or V-shaped ends are respectively connected with the connecting portion 310 and the force-receiving portion 330, and the curved portion or the sharp corner portion, i.e. the bending portion, of the U-shaped or V-shaped portion facing away from the opening portion abuts against the liquid bag 50.

In one embodiment, the extrusion 30 may be made of a material having a certain elasticity, such as rubber, silicone, or the like. The extrusion member 30 may form the connection portion 310, the force receiving portion 330, and the extrusion portion 320 through an integral molding process (e.g., injection molding). Of course, in other embodiments, the connecting portion 310, the force-receiving portion 330 and the pressing portion 320 may be formed separately and assembled into the pressing member 30, which will not be described in detail.

In an embodiment, the pressing portion 320 generally includes a first annular wall 321 extending from the connecting portion 310 and penetrating through the window 610, and a second annular wall 322 extending from the force-receiving portion 330 and penetrating through the window 610, and ends of the first annular wall 321 and the second annular wall 322 facing away from the cover 60 are connected and configured to abut against the liquid bag 50. Preferably, the first annular wall 321 and the second annular wall 322 are both annular, the first annular wall 321 extends from the edge of the hollow structure of the connecting portion 310 and penetrates through the window 610, and the second annular wall 322 extends from the edge of the force-receiving portion 330 and penetrates through the window 610.

It is noted that the terms "first", "second", etc. are used herein for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second" may explicitly or implicitly include one or more of the described features.

The utility model provides a used repeatedly liquid detection device through set up the recess on bearing the seat and form the liquid flow channel that communicates the recess bottom the recess, further arrange the liquid package in the recess through the extrusion of locating groove opening part for liquid in the liquid package can flow out and flow in the liquid flow channel, can avoid the loaded down with trivial details nature of injecting into liquid operation alone at every turn, improves measurement of efficiency. It should be noted that the fluid pack may be configured as a replaceable consumable, thereby allowing the reusable fluid testing device to be reused multiple times.

It is noted that the terms "comprises" and "comprising," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The above description is only a part of the embodiments of the present application, and not intended to limit the scope of the present application, and all equivalent devices or equivalent processes performed by the content of the present application and the attached drawings, or directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims (12)

1. A reusable liquid testing device comprising:

the bearing seat is provided with a first surface and a second surface, the first surface is provided with a groove, the bottom of the groove is provided with a liquid flow channel, and the liquid flow channel is communicated to the second surface;

the detection electrode is arranged corresponding to the second surface and used for detecting the liquid entering or flowing out of the liquid flow channel;

the extrusion part is arranged at the opening of the groove and is used for extruding the liquid bag in the groove so as to enable the liquid in the liquid bag to flow out and enter the liquid flow channel.

2. The detection device of claim 1, wherein the extrusion includes a connection portion configured to position the extrusion at the opening of the recess and a pressing portion provided at one side of the connection portion, the pressing portion extending from the connection portion into the recess and configured to press the liquid pack.

3. The detecting device for detecting the rotation of the motor rotor according to the claim 2, wherein the detecting device further comprises a cover body covering the opening of the groove, and the connecting portion is arranged at a distance from the bottom of the groove and connected with the cover body.

4. The detecting device according to claim 3, wherein the connecting portion is disposed on a side of the cover body away from the bottom of the groove, and the pressing portion penetrates through the cover body and extends into the groove.

5. The detecting device for detecting the rotation of the motor rotor as claimed in claim 4, wherein the cover body is provided with a window communicated with the groove, the surface of the cover body, which is far away from the bottom of the groove, is provided with a mounting groove communicated with the window, and the mounting groove surrounds at least part of the outer periphery of the window; the connecting part is arranged in the mounting groove, and the extruding part penetrates through the window.

6. The detecting device for detecting the rotation of the motor rotor according to the claim 5, wherein the connecting portion is annular and is embedded in the mounting groove, the pressing portion comprises a ring wall extending from the connecting portion and penetrating through the window, and the end portion of the ring wall departing from the connecting portion is closed.

7. The detecting device according to claim 5, wherein the extruded member further comprises a force-receiving portion suspended on the window, the force-receiving portion is spaced apart from the connecting portion, and the extruding portion is connected to the force-receiving portion and the connecting portion respectively.

8. The detecting device for detecting the rotation of a motor rotor as claimed in claim 7, wherein the connecting portion is annular, and the force-bearing portion is arranged in an annular hollow area of the connecting portion.

9. The detecting device according to claim 7, wherein the pressing portion includes a first annular wall extending from the connecting portion and penetrating through the window, and a second annular wall extending from the force-receiving portion and penetrating through the window, and ends of the first annular wall and the second annular wall facing away from the cover are connected.

10. The detecting device for detecting the rotation of the motor rotor according to the claim 3, wherein the connecting portion is arranged on one side of the cover body close to the bottom of the groove, and the pressing portion is arranged on one side of the connecting portion away from the cover body.

11. The detecting device for detecting the rotation of a motor rotor as claimed in claim 2, wherein the groove comprises a bottom and a side part extending from the edge of the bottom, the side part facing away from the bottom encloses an opening forming the groove, and the bottom is provided with the liquid flow passage; wherein the connecting part is arranged at an interval with the bottom part and connected to the side part.

12. The testing device of claim 1, wherein said extrusion is made of rubber or silicone.

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