CN213600715U - Quality control product detection card - Google Patents

Abstract

The application discloses quality control product detects card. This quality control quality test card includes: a sample inlet; a goose-shaped pipe; a mixing chamber, wherein a sample inlet and a sample outlet are arranged in the mixing chamber, and the sample inlet is higher than the sample outlet; one or more air vents are further arranged in the mixing cavity, and positive pressure or negative pressure is generated in the mixing cavity through the air vents; a calcium chloride storage chamber; a one-way valve mechanism; a sample outlet; the interior of the calcium chloride storage cavity is in a gourd shape; the mixing chamber is provided with a blocking strip, one end of the blocking strip is connected with the edge of the mixing chamber, and the other end of the blocking strip is bent towards the direction of the sample outlet. The quality control product detection card can replace the prior manual operation, adopts a positive pressure/negative pressure change mode, and can realize the automatic operation flow of quality control product detection.

Description

Quality control product detection card

Technical Field

The application relates to a detection instrument, in particular to a quality control product detection card.

Background

Thrombosis and thromboembolism are the direct causes of death and are also key factors and critical links in the occurrence of cardiovascular events. In recent years, the Disease Management Program (DMP) has been advocated as a solution to chronic diseases such as diabetes, heart disease, and asthma. However, since conventional disease management means (clinical laboratories/clinical monitoring) have a series of weaknesses, a more rapid, simple, accurate monitoring device is required for replacement. In this context, the field of point-of-care test (POCT) has gained a huge development space. In 2015, the global in vitro diagnostic market size reached $ 600 billion, with a market share associated with coagulation testing reaching $ 18 billion.

The blood coagulation analyzer has wider application in the field of POCT blood coagulation detection, and each index has definite clinical and physiological significance. The thromboelastogram instrument has also been widely popularized.

Thromboelastogram (TEG) is a graph drawn by a thromboelastometer, and is an index reflecting dynamic changes in blood coagulation (including the rate of fibrin formation, the firmness of a dissolved state and a coagulated state, and the elasticity). Although the thromboelastogram has a series of advancement, convenience and innovation in detection method, detection process and detection accuracy, the existing thromboelastogram has a series of defects and shortcomings in the aspects of patient feeling, detection efficiency, automation degree and the like based on inherent characteristics of the thromboelastogram on the premise of a detection principle, and the application prospect of the thromboelastogram in the fields of hospitals, professional clinical detection mechanisms, particularly patient family health monitoring is greatly limited.

At present, a thromboelastogram apparatus adopts a coagulation method, simulates physiological blood coagulation conditions, adds a certain reagent, starts blood agglutination reaction, converts fibrinogen in a sample into cross-linked fibrin, and coagulates the sample. The motor inside the instrument drives the sample cup bearing the blood sample to rotate in certain angle, such as minutes and periods, such as seconds, once the thrombus is formed, the metal probe arranged in the blood sample cup is subjected to the shear stress of the sample and rotates left and right along with the shear stress. The rotation of the metal needle is sensed by a non-contact angle rotation sensor such as an inductive angle sensor, and converted into electric quantity which is processed by a processor, and the dynamic change of the measured blood sample can be automatically recorded by the software of the instrument, so that a blood coagulation curve is formed.

Along with the continuous expansion of the detection project of the thromboelastography instrument to various fields of disease diagnosis and treatment, the quality control of the detection instrument in the detection room is also very important. By inquiring the website of the national food and drug supervision and management bureau, the registered batch texts of the quality control products of the thromboelastogram instrument are only provided with two units, one is imported, the supply is limited in the market, the price is not high, the other one is made in China and has no commercialized supply.

Therefore, the quality control product of the thrombelastogram instrument prepared from the animal plasma has practical significance: firstly, quality control basis and method are provided for clinical monitoring of the thromboelastography instrument developed by the applicant of the company. And secondly, the application of the method is widened to an imported thrombelastogram instrument and a related domestic thrombelastogram instrument.

The quality control product is generally lyophilized powder prepared from animal blood plasma. Adding a certain volume of water into the quality control product, fully dissolving and mixing, adding calcium chloride to start the coagulation of animal plasma, and when the calcium chloride is used for a thromboelastogram instrument, the calcium chloride is equivalent to a calibrator or a standard product, thereby playing a role in calibrating equipment parameters.

However, the process of mixing the water and the quality control material and then mixing the calcium chloride often needs to be performed in multiple steps, such as the absorption of the water sample, the acquisition of the quality control material, the mixing of the water sample and the quality control material, and the like. The process is too cumbersome and tends to contaminate the reagents with the environment.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the content is mainly directed against above-mentioned problem, adopts integration, modular design, fixes quality control article in this quality control article detection card in advance, realizes the automation mechanized operation that quality control article detected.

Detection card this application provides a quality control article detection card, its characterized in that includes:

the sample inlet is used for being connected with a system to be sample-injected, so that a sample in the system to be sample-injected is conveyed into the quality control quality detection card through the sample inlet;

a goose-shaped tube in fluid communication with the sample inlet;

the mixing cavity is internally provided with a sample inlet and a sample outlet, and the sample inlet is connected with the goose-shaped pipe; one or more air vents are further arranged in the mixing cavity, and positive pressure or negative pressure is generated in the mixing cavity through the air vents;

one end of the calcium chloride storage chamber is connected with the sample outlet;

one end of the one-way valve mechanism is connected with the other end of the calcium chloride storage cavity;

the sample outlet is connected with the other end of the one-way valve mechanism, and the one-way valve mechanism enables a sample to flow from the mixing cavity to the sample outlet in one way only;

the interior of the calcium chloride storage cavity is in a gourd shape;

the mixing chamber is provided with a blocking strip, one end of the blocking strip is connected with the edge of the mixing chamber, and the other end of the blocking strip is bent towards the direction of the sample outlet.

Furthermore, a U-shaped buffer tube is arranged between the sample inlet and the goose-shaped tube.

Further, the mixing chamber is in communication with a pressure system through the vent.

Further, pressure system includes the air pump, malleation jar and negative pressure jar, the air pump respectively with malleation jar with the negative pressure jar is connected, malleation jar through positive pressure valve with the blow vent is connected, the negative pressure jar pass through negative pressure valve with the blow vent is connected.

Further, the sample inlet is arranged at the upper part of the mixing cavity, and the sample outlet is arranged at the lower part of the mixing cavity.

Furthermore, the sample inlet is fixedly connected with a contact pin.

The quality control product detection card can replace the current manual quality control product detection operation, adopts the positive pressure/negative pressure change mode, and can realize the automatic operation flow of quality control product detection. The quality control quality detection card of this application still has following advantage:

1) manual operation errors are avoided, and the operation consistency among samples is improved;

2) after the detection is finished, simplifying the processing flow of the waste sample;

3) the consumption and cost of consumables (reagents are sealed in the detection card) are reduced, and the pollution of samples caused by exposure to the environment is reduced.

Drawings

FIG. 1 is a schematic diagram of a quality control test card according to the present application;

FIG. 2 shows a schematic view of a pressure system;

FIG. 3 illustrates a schematic structural view of a one-way valve mechanism according to an embodiment of the present application;

FIG. 4 shows a diagrammatic view of the one-way valve mechanism of FIG. 3 with the lower chamber under negative pressure;

FIG. 5 shows a diagrammatic view of the one-way valve mechanism of FIG. 3 with the lower chamber at positive pressure;

FIG. 6 illustrates the lower chamber in the one-way valve mechanism as it creates positive pressure, showing the opening of the communication path between the upper and lower chambers;

fig. 7 shows the situation when the lower chamber in the one-way valve mechanism is generating negative pressure (or no pressure), showing the closing of the communication passage of the upper chamber with the lower chamber;

FIG. 8 illustrates a schematic structural view of one embodiment of a one-way valve mechanism;

fig. 9 shows a schematic structural view of a gourd-shaped calcium chloride storage chamber.

Detailed Description

The present application is described in further detail below with reference to the figures and examples. The features and advantages of the present application will become more apparent from the description.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

In addition, the technical features described below in the different embodiments of the present application may be combined with each other as long as they do not conflict with each other.

The application provides a quality control quality detection card, this quality control quality detection card can be connected with follow-up detecting system to will wait to detect the sample through this quality control quality detection card and carry follow-up detecting system in, supply follow-up detecting system to detect, it is specific, follow-up detecting system can be for the thrombelastogram appearance.

As shown in fig. 1 to 2, the present application provides a quality control inspection card including:

the sample inlet 1 is used for being connected with a system to be sample introduced so that a sample in the system to be sample introduced is conveyed into the quality control quality detection card through the sample inlet 1;

a goose-shaped tube 2 in fluid communication with the sample inlet 1;

a mixing chamber 3, wherein a sample inlet 31 and a sample outlet 32 are arranged in the mixing chamber 3, and the sample inlet 31 is connected with the goose-shaped pipe 2; one or more air vents 33 are further arranged in the mixing chamber 3, and positive pressure or negative pressure is generated in the mixing chamber 3 through the air vents 33;

a calcium chloride storage cavity 13, one end of which is connected with the sample outlet;

one end of the one-way valve mechanism 4 is connected with the other end of the calcium chloride storage cavity 13;

the sample outlet 11 is connected with the other end of the one-way valve mechanism, and the one-way valve mechanism enables a sample to flow from the mixing cavity to the sample outlet 11 only in one way;

the calcium chloride storage cavity 13 is in a gourd shape, as shown in fig. 1 and 9;

the mixing chamber is provided with a barrier strip 34, one end of the barrier strip 34 is connected with the edge of the mixing chamber, and the other end is bent towards the direction of the sample outlet. In the quality control quality detection card of this application, this introduction port 1 can be connected with the system of waiting to advance the appearance through parts such as pipeline, syringe needle in this field, and the system of waiting to advance the appearance in this field generally is the export of test tube, instrument etc. is test tube 8 in this application, is provided with contact pin 9 on the introduction port 1. The mixing cavity is generally provided with a dry powder-shaped quality control product in advance, and the liquid flowing into the sample inlet is generally a water sample 7. After the water sample 7 flows into the mixing cavity 3, the water sample and the quality control product dry powder form a sample solution.

The quality control quality detection card of this application includes goose shape pipe 2, and this goose shape pipe 2 is the micro-fluidic pipeline, and wherein, the micro-fluidic refers to the technique that uses little pipeline (the size is tens to hundreds of microns) to handle or manipulate the system of little fluid, and the micro-fluidic pipeline is the pipeline that is used for micro-fluidic chip, and this structure is prior art, therefore no longer explains. The function is to prevent the sample solution in the mixing cavity 3 from flowing back to the system to be sample-fed when the pressure in the pipeline is positive. Although the direct connection between the mixing chamber 3 and the injection port 1 is theoretically possible (for example, the injection port 1 is disposed right above the mixing chamber 3), since an air path system (the space on the detection card is too small) is further disposed at the position, and an internal structure of an original piece of the detection device needs to be matched, the current layout is adopted.

In one embodiment, a U-shaped buffer tube 5 is provided between the sample inlet 1 and the goose-shaped tube 2 to slow down the sample actuation at the moment of insertion of the insertion pin 9 and opening of the valve.

The sample inlet 31 is connected with the goose-shaped pipe 2 and is used for inputting the water sample 7 into the mixing cavity 3 through the sample inlet 31; and the sample outlet 32 is provided for discharging the sample solution in the mixing chamber 3 from the mixing chamber 3.

The mixing chamber 3 is actually a chamber for temporarily storing the dry powder-like quality control material, and the quality control material is previously placed in the chamber and mixed with the quality control material to be dissolved when the water sample 7 enters the chamber. The purpose of this chamber is mainly two: 1) ensuring the sufficient sample volume of the water sample 7, and finally allowing enough sample solution to enter a subsequent detection system; 2) within this chamber, the water sample 7 is mixed with the dry powder-like quality control substance (this mixing requires no time critical and may for example be more than 1min, less than 5 min). The size, shape, etc. of the mixing chamber 3 can be selected according to specific needs. And the water sample 7 will encounter the barrier strip 34 when entering the mixing chamber 3 from the sample inlet 31, thereby promoting more thorough mixing of the water sample 7 with the dry powder-like quality control material.

In the present case, the input of the water sample 7 into the mixing chamber 3 and the outflow of the sample solution can be achieved by a pressure change in the mixing chamber 3. One or more air vents 33 are also provided in the mixing chamber 3, through which air vents 33 a positive or negative pressure is generated within the mixing chamber 3. When negative pressure is generated in the mixing chamber 3, the water sample 7 is input into the mixing chamber 3 through the sample inlet 31; when a positive pressure is generated in the mixing chamber 3, the sample solution is output from the mixing chamber 3 through the sample outlet 32. For this purpose, the sample inlet 31 is arranged in the upper part of the mixing chamber 3, and the sample outlet 32 is arranged in the lower part of the sample outlet 32. Also, the liquid level of the sample solution in the mixing chamber 3 is controlled not to exceed the sample inlet 31, so that when a positive pressure is generated in the mixing chamber 3, the sample can be outputted from the mixing chamber 3 only through the sample outlet 32, not from the sample inlet 31.

In one embodiment, the mixing chamber 3 is in communication with the pressure system through a vent 33. In one embodiment, fig. 2 shows a pressure system comprising an air pump 63, a positive pressure tank 62 and a negative pressure tank 65, the air pump 63 is connected to the positive pressure tank 62 and the negative pressure tank 65, respectively, the positive pressure tank 62 is connected to the vent port 33 through a positive pressure valve 61, and the negative pressure tank 65 is connected to the vent port 33 through a negative pressure valve 64. The positive pressure and the negative pressure are generated by the positive pressure tank 62 and the negative pressure tank 65, and the air pump 63 is matched to form: the air pump 63 pumps air from the negative pressure tank 65 to the positive pressure tank 62, which is equivalent to pumping air into the positive pressure tank 62 without stopping, when the air pressure in the positive pressure tank 62 is enough, the positive pressure valve 61 is opened, and the air is discharged to the mixing chamber 3, so that positive pressure is formed in the mixing chamber 3; when the air pressure in the negative pressure tank 65 is sufficient, the negative pressure valve 64 opens, drawing air from the mixing chamber 3, thereby creating a negative pressure in the mixing chamber 3. In one embodiment, the pressure system can be connected directly to the air port 33, so that 2 air ports 33 can be provided in the mixing chamber 3, one air port being connected to the positive pressure valve 61 and the other air port being connected to the negative pressure valve 64. In a preferred embodiment, the mixing chamber 3 is provided with 1 vent 33, and a positive pressure port 331 and a negative pressure port 332 are provided on a pipeline connected to the vent 33; as shown in fig. 2, the positive pressure valve 61 is connected to the positive pressure port 331, and the negative pressure valve 64 is connected to the negative pressure port 332; this is preferred because it is only necessary to provide a vent in the mixing chamber 3 and the mixing chamber 3 is simpler to manufacture.

In one embodiment, as shown in fig. 1, a calcium chloride storage chamber 13, in this example in the shape of a gourd, is also provided, inside which calcium chloride is pre-filled. The calcium chloride storage cavity 13 is in a spatial amplification-contraction-reamplification-re-contraction state, and the flow rate of the sample solution is in a deceleration-acceleration-re-deceleration-re-acceleration state under the condition that the flow rate is not changed, so that the repeated sucking and beating of a liquid transfer device can be realized, and the sample solution can be easily washed off and quickly dissolved into the sample solution.

Quality control quality testing card still includes check valve mechanism 4, check valve mechanism one side through calcium chloride storage chamber 13 with the sample exit linkage of hybrid chamber. When the negative pressure is kept in the mixing cavity 3, the one-way valve mechanism 4 is closed, so that the sample solution above the one-way valve mechanism 4 cannot flow back into the mixing cavity 3; when the positive pressure is maintained in the mixing chamber 3, the one-way valve mechanism 4 is opened, so that the sample solution in the mixing chamber 3 is supplied to the subsequent detection system through the one-way valve mechanism 4 under the pressure.

As described above, the check valve mechanism 4 is connected to the subsequent detection system through the sample outlet 11, so that the sample solution in the mixing chamber can be obtained by the subsequent detection system.

The following describes a structure of the check valve mechanism 4 that can be used in the present application. FIG. 3 illustrates a schematic structural view of a one-way valve mechanism according to an embodiment of the present application; FIG. 4 shows a diagrammatic view of the one-way valve mechanism of FIG. 3 with the lower chamber under negative pressure; FIG. 5 shows a diagrammatic view of the one-way valve mechanism of FIG. 3 with the lower chamber at positive pressure; FIG. 6 illustrates the lower chamber in the one-way valve mechanism as it creates positive pressure, showing the opening of the communication path between the upper and lower chambers; fig. 7 shows the situation when the lower chamber in the one-way valve mechanism is generating negative pressure (or no pressure), showing the closing of the communication passage of the upper chamber with the lower chamber; fig. 8 shows a schematic structural view of a check valve mechanism of an embodiment.

As shown in fig. 3 to 8, the check valve mechanism 4 that can be used in the present application is a microfluidic check valve, which includes a check valve cavity 10, and is characterized in that the microfluidic check valve further includes:

the valve plate structure 101 is arranged inside the one-way valve cavity 10, and the valve plate structure 101 divides the inside of the one-way valve cavity 10 into an upper cavity 102 and a lower cavity 103; the valve plate structure 101 is configured to open the communication channel between the upper chamber 102 and the lower chamber 103 in one direction,

an inlet conduit 104 in fluid communication with the lower chamber 103 of the one-way valve chamber; and

an outlet conduit 105 in fluid communication with the upper chamber 102 of the one-way valve chamber.

In one embodiment, as shown in fig. 3-7, the lower cavity 103 of the one-way valve cavity is configured to be positively pressurized, and the valve plate structure 101 opens a communication passage between the upper cavity 102 and the lower cavity 103. The positive pressure may be generated by a pressure system (not shown) in fluid communication with the inlet conduit 104. The pressure system may comprise an air pump or the like. A positive pressure is generated by a pressure system such as an air pump to the system connected to the inlet pipe 104, and thus a positive pressure can be generated in the lower chamber 103 of the one-way valve chamber. Under the positive pressure, the valve plate structure 101 can open a communication channel between the upper chamber 102 and the lower chamber 103, so that the upper chamber 102 is communicated with the lower chamber 103, and thus the fluid (gas or liquid) in the lower chamber 103 flows into the upper chamber 102 and flows out of the one-way valve through the outlet pipe 105.

In one embodiment, the lower cavity 103 of the one-way valve cavity is configured to be under-pressure, and the valve sheet structure 101 closes a communication channel between the upper cavity 102 and the lower cavity 103. The negative pressure may also be generated by a pressure system (not shown) in fluid communication with the inlet conduit 104. The pressure system may comprise an air pump or the like. A negative pressure is generated to a system connected to the inlet pipe 104 by a pressure system such as an air pump, and thus a negative pressure can be generated in the lower chamber 103 of the check valve chamber. Under the negative pressure, the valve plate structure 101 closes a communication channel between the upper cavity 102 and the lower cavity 103, so that the upper cavity 102 is not communicated with the lower cavity 103, and therefore, the fluid (gas or liquid) in the lower cavity 103 cannot flow into the upper cavity 102, and the fluid (gas or liquid) in the upper cavity 102 cannot flow back into the lower cavity 103.

In one embodiment, the valve sheet structure 101 includes a fixing portion 1011 disposed on an inner wall of the one-way valve cavity 10, and a valve sheet 1012 connected to the fixing portion 1011, where the valve sheet 1012 closes or opens a communication channel between the upper cavity 102 and the lower cavity 103. The valve sheet 1012 is connected to the fixing portion 1011 and can rotate around the fixing portion 1011 in the check valve chamber 10. Meanwhile, the valve plate 1012 also contacts the inner wall of the one-way valve cavity 10, and the contact part with the inner wall of the one-way valve cavity is adapted to the shape of the inner wall of the one-way valve cavity. Therefore, the valve sheet 1012 can be in contact with the inner wall of the one-way valve cavity under the action of the negative pressure in the lower cavity 103, so that the communication channel between the upper cavity 102 and the lower cavity 103 is closed, and the fluid (gas or liquid) in the lower cavity 103 cannot flow into the upper cavity 102. Meanwhile, the valve plate 1012 can be spaced from the inner wall of the one-way valve cavity under the positive pressure action in the lower cavity 103, so that a communication channel between the upper cavity 102 and the lower cavity 103 is opened, and fluid (gas or liquid) in the lower cavity 103 can flow into the upper cavity 102 through a gap between the valve plate 1012 and the inner wall of the one-way valve cavity.

In one embodiment, a valve plate stopper is disposed on the inner wall of the one-way valve chamber 10, and the valve plate stopper can support the valve plate 1012. Meanwhile, the end part of the upper surface of the valve plate separation blade can be matched with the end part of the lower surface of the valve plate 1012, so that the upper surface of the valve plate separation blade can be connected with the lower surface of the valve plate, the upper cavity 102 and the lower cavity 103 are separated by a valve plate structure, and a communication channel between the upper cavity and the lower cavity is closed. Moreover, the valve plate baffle plate and the valve plate can be easily separated, so that a communication channel between the upper cavity 102 and the lower cavity 103 can be opened. With such an arrangement, the valve plate can close the communication channel between the upper cavity 102 and the lower cavity 103 under the action of the negative pressure in the lower cavity 103, and the fluid (gas or liquid) in the lower cavity 103 cannot flow into the upper cavity 102. Meanwhile, the valve plate can open a communication channel between the upper cavity 102 and the lower cavity 103 under the action of positive pressure in the lower cavity 103, so that fluid (gas or liquid) in the lower cavity 103 flows into the upper cavity 102.

As shown in FIG. 8, when a sample flows through the valve plate 1012 from bottom to top, the valve plate 1012 can be pushed upwards, the valve plate 1012 can be bent upwards to form a gap, and the sample can flow through the valve plate and continue to move upwards. If the sample flows past the valve plate 1012 from top to bottom, the valve plate 1012 covers the opening of the lower chamber 103 and a seal is formed at this location by deformation of the valve plate 1012, thereby preventing downward movement of the upper sample. In this embodiment, there is no particular limitation on the shapes of the valve sheet, the upper chamber, and the lower chamber, and the like, and the valve sheet is made of a soft material and is an inert material for the sample. However, the area of the valve plate 1012 is required to be larger than the cross-sectional area of the lower chamber 103, the cross-sectional area of the lower end of the upper chamber 102 is larger than the cross-sectional area of the valve plate 1012, and the cross-sectional area of the valve plate 1012 is larger than the cross-sectional area of the upper end of the lower chamber 103.

In one embodiment, the one-way valve mechanism of the present application can easily separate the chambers inside the one-way valve, and can open or close the communication passage between the upper chamber and the lower chamber under the pressure. As shown in fig. 4 to 7, the valve sheet structure can easily open/close the communication passage of the upper chamber and the lower chamber by moving the valve sheet structure in the check valve chamber. FIG. 6 illustrates the situation when the lower chamber 103 in the one-way valve creates a positive pressure, showing the opening of the communication channel between the upper and lower chambers, thereby enabling fluid flow from the lower chamber to the upper chamber; fig. 7 shows the situation when the lower chamber 103 in the one-way valve is generating negative pressure (or no pressure), showing that the communication channel of the upper and lower chambers is closed, whereby fluid cannot flow between the upper and lower chambers. The check valve mechanism has the advantages of simple structure, convenience in control and capability of being easily introduced into a quality control product detection card.

In the present application, as for the check valve mechanism as described above, the inlet pipe 104 of the lower chamber 103 is connected to the sample outlet 32 of the mixing chamber 3 through the calcium chloride storage chamber 13 by a pipeline, and the outlet pipe 105 of the upper chamber 102 is connected to the sample outlet 11 by a pipeline, so that the sample solution flowing out of the mixing chamber 3 from the sample outlet 32 is introduced into the subsequent detection system through the check valve mechanism.

The following describes the use of the quality control test card:

connecting the water sample 7 to be tested with the sample inlet 1, opening the negative pressure valve 64, generating negative pressure in the mixing cavity 3, so that the water sample 7 is fed into the mixing cavity 3 through the sample inlet 1, the U-shaped buffer tube 5 and the goose-shaped tube 2, and at the moment, closing the one-way valve mechanism 4;

after the sample introduction is set, the positive pressure valve 61 is opened, the negative pressure valve 64 is closed at the same time, positive pressure is generated in the mixing chamber 3, and the one-way valve mechanism 4 is opened at the moment, so that the sample solution in the mixing chamber 3 is introduced into the subsequent detection system through the calcium chloride storage chamber 13, the one-way valve mechanism 4 and the sample outlet 11.

In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on operational states of the present application, and are only used for convenience in describing and simplifying the present application, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

In the description of the present application, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly unless otherwise explicitly stated or limited. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The present application has been described above with reference to preferred embodiments, but these embodiments are merely exemplary and merely illustrative. On the basis of the above, the present application can be subjected to various substitutions and improvements, and the substitutions and the improvements are all within the protection scope of the present application.

Claims (6)

1. A quality control product detection card, comprising:

the sample inlet is used for being connected with a system to be sample-injected, so that a sample in the system to be sample-injected is conveyed into the quality control quality detection card through the sample inlet;

a goose-shaped tube in fluid communication with the sample inlet;

the mixing cavity is internally provided with a sample inlet and a sample outlet, and the sample inlet is connected with the goose-shaped pipe; one or more air vents are further arranged in the mixing cavity, and positive pressure or negative pressure is generated in the mixing cavity through the air vents;

one end of the calcium chloride storage chamber is connected with the sample outlet;

one end of the one-way valve mechanism is connected with the other end of the calcium chloride storage cavity;

the sample outlet is connected with the other end of the one-way valve mechanism, and the one-way valve mechanism enables a sample to flow from the mixing cavity to the sample outlet in one way only;

the interior of the calcium chloride storage cavity is in a gourd shape;

the mixing chamber is provided with a blocking strip, one end of the blocking strip is connected with the edge of the mixing chamber, and the other end of the blocking strip is bent towards the direction of the sample outlet.

2. The quality control card of claim 1, wherein a U-shaped buffer tube is disposed between the sample inlet and the goose-shaped tube.

3. The quality control test card of claim 1 wherein said mixing chamber is in communication with a pressure system through said vent.

4. The quality control product detection card of claim 3, wherein the pressure system comprises an air pump, a positive pressure tank and a negative pressure tank, the air pump is respectively connected with the positive pressure tank and the negative pressure tank, the positive pressure tank is connected with the vent port through a positive pressure valve, and the negative pressure tank is connected with the vent port through a negative pressure valve.

5. The quality control card according to claim 1, wherein the sample inlet is provided at an upper portion of the mixing chamber, and the sample outlet is provided at a lower portion of the mixing chamber.

6. The quality control product inspection card of claim 1, wherein the sample inlet is fixedly connected with a contact pin.

Images