CN111175481A

CN111175481A - Blood gas biochemical test card, blood gas analyzer and control method of blood gas analyzer

Info

Publication number: CN111175481A
Application number: CN201811330718.1A
Authority: CN
Inventors: 朱志华
Original assignee: Guangzhou Wondfo Biotech Co Ltd
Current assignee: Guangzhou Wondfo Biotech Co Ltd
Priority date: 2018-11-09
Filing date: 2018-11-09
Publication date: 2020-05-19

Abstract

The invention discloses a blood gas biochemical test card, a blood gas analyzer and a control method of the blood gas analyzer, wherein the blood gas biochemical test card comprises the following components: the test card body is provided with a first fluid pipeline, a test cavity communicated with the liquid outlet end of the first fluid pipeline and a second fluid pipeline communicated with the liquid outlet end of the test cavity, the first fluid pipeline is provided with a first liquid inlet, and the second fluid pipeline is provided with a connecting part for connecting the suction device; the calibration liquid bag is fixedly arranged on the test card body and is provided with a matching part butted with the first liquid inlet; and the valve core is arranged in the first fluid pipeline or in the calibration liquid bag, and is provided with a sharp-pricked part for pricking the matching part. The blood gas biochemical test card can accurately puncture a calibration liquid bag by using the valve core, so that the calibration liquid can be injected into the first fluid pipeline; the blood gas biochemical analyzer can conveniently and accurately complete calibration analysis.

Description

Blood gas biochemical test card, blood gas analyzer and control method of blood gas analyzer

Technical Field

The invention relates to the technical field of medical instruments, in particular to a blood gas biochemical test card, a blood gas analyzer and a control method of the blood gas analyzer.

Background

The blood gas biochemical test card is widely used in the medical industry, integrates a biochemical test electrode, is calibrated by a calibration liquid, and then tests the test liquid (blood).

In the traditional blood gas biochemical test card integrated with the calibration liquid, the calibration liquid flows into the electrode to complete the calibration test by crushing and pulling the calibration liquid bag through the filler in the calibration liquid bag in the test process. However, the calibration liquid bag is opened by squeezing and pulling, so that the damage degree of the calibration liquid bag is not easy to control, and calibration liquid flows out, so that the test is inaccurate or fails. In addition, the calibration needs to be performed by extruding the test solution onto the electrode in time to perform sample test, so that the conventional blood gas analyzer is complex in operation, needs a professional operator to perform strict operation, and is prone to cause inaccurate blood gas parameter test.

Disclosure of Invention

Based on this, it is necessary to provide a blood gas biochemical test card, a blood gas analyzer and a control method of the blood gas analyzer, wherein the blood gas biochemical test card can precisely puncture a calibration liquid bag by using a valve core, so that the calibration liquid can be injected into a first fluid pipeline; the blood gas biochemical analyzer applies the blood gas biochemical test card, can conveniently and accurately complete calibration analysis, and is favorable for improving the accuracy of test parameters.

The technical scheme is as follows:

in one aspect, the present application provides a blood gas biochemical test card, comprising: the test card comprises a test card body, a first liquid inlet and a second liquid inlet, wherein the test card body is provided with a first fluid pipeline, a test cavity communicated with the liquid outlet end of the first fluid pipeline and a second fluid pipeline communicated with the liquid outlet end of the test cavity; the calibration liquid bag is fixedly arranged on the test card body and is provided with a matching part butted with the first liquid inlet; and the valve core is arranged in the first fluid pipeline or in the calibration liquid bag, and is provided with a sharp part for puncturing the matching part.

When the blood gas biochemical test card is used, the valve core is arranged in the calibration liquid bag, and then the calibration liquid bag is integrated on the blood gas biochemical test card; or the valve core is arranged on the first fluid pipeline of the blood gas biochemical test card, and the spine part can be arranged towards the matching part of the calibration liquid bag. Therefore, when the calibration is needed, the first fluid pipeline or the calibration liquid bag is only needed to be pressed through external force, the sharp part of the valve core is driven to puncture the matching part, so that the calibration liquid in the calibration liquid bag can flow into the first fluid pipeline of the blood-gas biochemical test card through the first liquid inlet, and the calibration liquid can be guided into the test cavity through the first fluid pipeline to carry out the calibration process; then, the test analysis of the test solution is performed. According to the blood-gas biochemical test card, the calibration liquid bag is pierced by the sharp part of the valve core to complete the communication between the calibration liquid bag and the first liquid inlet, so that the calibration liquid can be prevented from flowing outwards due to overlarge damage of the calibration liquid bag; in addition, the valve core can be arranged in the blood gas biochemical test card in various modes, the manufacturing process is more flexible, and the manufacturing cost is convenient to reduce.

The technical solution is further explained below:

in one embodiment, after the first fluid pipeline or the calibration fluid bag is pressed in a preset direction, the first fluid pipeline or the calibration fluid bag can drive the sharp part to pierce the matching part to form a liquid outlet hole.

In one embodiment, the valve core is provided with a sealing ring arranged around the sharp thorn part; when the valve core is arranged in the calibration liquid bag, the sealing ring can seal the liquid outlet hole after being pressed in a first preset direction; when the valve core is arranged in the first fluid pipeline, the sealing ring can seal the first liquid inlet after being pressed in a second preset direction.

In one embodiment, the material of the sealing ring has elasticity.

In one embodiment, the calibration liquid bag is provided with a first film body capable of elastically resetting, the valve core is fixedly arranged on the inner side wall of the first film body, and the spine part is arranged towards the matching part; or the first fluid pipeline is provided with a second membrane body capable of elastically resetting, the valve core is fixedly arranged on the inner side wall of the second membrane body, and the spine part faces the matching part.

In one embodiment, the valve core is provided with a first end face and a second end face which are oppositely arranged, the first end face is provided with a mounting portion, the second end face is provided with the spine portion, and the spine portion is oppositely arranged with the matching portion.

In one embodiment, the test card body is further provided with a waste liquid storage cavity communicated with the liquid outlet end of the test cavity, and the liquid outlet end of the waste liquid storage cavity is communicated with the liquid inlet end of the second fluid channel.

In one embodiment, the test card body is further provided with a third fluid pipeline, the liquid inlet end of the third fluid pipeline is used for accessing test liquid, and the liquid outlet end of the third fluid pipeline is communicated with the liquid inlet end of the test cavity.

On the other hand, this application still provides a blood gas analysis appearance, including foretell biochemical test card of blood gas, still include getter device, detection device and with getter device reaches detection device communication connection's controller, getter device's the end of breathing in passes through connecting portion with the second fluid pipeline the suction opening butt joint intercommunication, detection device's sense terminal set up in the test intracavity.

When the blood gas analyzer is used, when calibration is needed, the first fluid pipeline or the calibration fluid bag is only needed to be pressed through external force (manually or electrically), and the sharp part of the valve core is driven to puncture the matching part, so that the calibration fluid bag is communicated with the first fluid pipeline through the first liquid inlet; the controller is used for accurately controlling the action of the air suction device, a proper amount of calibration liquid is sucked into the test cavity, and then the detection device is used for analyzing the calibration liquid to finish calibration analysis; when the test solution is analyzed subsequently, the air suction device can also be used for sucking a proper amount of test solution (such as blood) into the test cavity, and then the detection device is used for analyzing the test solution to obtain a test solution parameter report. This blood gas analyzer is when carrying out the calibration work, and the volume of taking out that can accurate control calibration liquid guarantees that calibration liquid covers detection device's sense terminal completely, and accurate will accomplish calibration analysis, obtains accurate calibration parameter, is favorable to improving test parameter's accuracy.

The technical solution is further explained below:

in one embodiment, the blood gas analyzer further comprises a first telescopic device in communication connection with the controller, and a telescopic end of the first telescopic device can press against the first fluid pipeline or the calibration fluid bag in the preset direction, so that the sharp puncturing part punctures the matching part. So, when carrying out calibration analysis, after installing the test card, only need input corresponding instruction, can pass through the first telescoping device action of controller control, drive flexible end according predetermineeing the direction and support and press first fluid pipeline or calibration liquid bag makes spike portion punctures cooperation portion to make calibration liquid bag through first inlet and first fluid pipeline intercommunication, then accurate control getter device action again, inhale test intracavity with appropriate amount of calibration liquid, then utilize detection device to carry out the analysis to calibration liquid, accomplish calibration analysis. The calibration analysis process is simple to operate and high in intelligence, and an operator can complete calibration analysis without strict training.

In one embodiment, the telescopic end of the first telescopic device can press against the first fluid pipeline or the calibration fluid bag in the preset direction, and the sealing ring can seal the liquid outlet hole, or enable the sealing ring to seal the first liquid inlet.

In one embodiment, the valve core is provided with a first end face and a second end face which are oppositely arranged, the first end face is provided with a connecting portion, the second end face is provided with the spine portion, the spine portion and the matching portion are oppositely arranged, the telescopic end of the first telescopic device is arranged in the positive direction of the first end face, and the first telescopic device can push the spine portion to move towards the direction of the matching portion.

In one embodiment, the third fluid conduit is provided with a resiliently resettable third diaphragm which is compressed to form a third seal closing the third fluid passage.

In one embodiment, the blood gas analyzer further comprises a second expansion device in communication with the controller, and an expansion end of the second expansion device can press the third membrane body to form the third sealing structure.

On the other hand, the application also provides a control method of the blood gas analyzer, which comprises the following steps:

the first fluid pipeline or the calibration fluid bag is pressed in a preset direction, so that the sharp part pierces the matching part and forms a liquid outlet hole;

sucking the calibration liquid of the calibration liquid bag into a test cavity of the blood gas test card for calibration analysis;

after the calibration analysis is finished, the test liquid is sucked or pushed into the test cavity for test analysis.

By utilizing the control method of the blood gas analyzer, calibration analysis of calibration liquid and test analysis of test liquid can be automatically realized, an operator only needs to insert the injector storing the test liquid when the test is started, and the operator can leave after the insertion, so that the operation time of the operator is saved, the working strength is reduced, the problems of leakage of the test liquid, proper amount of the test liquid and the like do not need to be worried, and the accuracy of test parameters can be improved.

The technical solution is further explained below:

in one embodiment, after the calibration analysis is completed, the method further includes: and closing the liquid outlet hole of the calibration liquid bag, and then sucking the test liquid into the test cavity for test analysis.

Drawings

FIG. 1 is a schematic diagram of a blood gas biochemical test card according to an embodiment;

FIG. 2 is an exploded view of the calibration fluid bag shown in FIG. 1;

FIG. 3 is a schematic structural view of the valve cartridge shown in FIG. 2;

FIG. 4 is a cross-sectional schematic view of the valve cartridge of FIG. 3;

FIG. 5 is a schematic view of an embodiment of a blood gas biochemical test card with a first inlet port in a closed state (or a valve element piercing mating portion);

FIG. 6 is a schematic view of an embodiment of a blood gas biochemical test card with a first loading port in an open state;

FIG. 7 is a schematic view of another embodiment of a blood gas biochemical test card with a first loading port in a closed state (or a valve element piercing engagement portion);

FIG. 8 is a schematic view of another embodiment of the blood gas biochemical test card with the first loading port in an open state;

FIG. 9 is a diagram illustrating a third fluid conduit of a blood gas biochemical test card in a closed state according to an embodiment;

FIG. 10 is a schematic diagram of a blood gas analyzer according to an embodiment;

FIG. 11 is an exploded view of the blood gas analyzer of FIG. 10;

FIG. 12 is a schematic diagram of the blood gas analyzer of FIG. 10 for performing calibration analysis;

fig. 13 is a schematic diagram of the blood gas analyzer shown in fig. 10 for analyzing the test solution.

Description of reference numerals:

10. the test card comprises a test card body 100, a test card body 110, a first fluid pipeline 112, a first liquid inlet 114, a second membrane body 120, a test cavity 130, a second fluid pipeline 132, a connecting part 140, a waste liquid storage cavity 150, a third fluid pipeline 152, a third membrane body 200, a calibration liquid bag 210, a matching part 212, a liquid outlet hole 220, a first membrane body 300, a valve core 310, a spine part 320, a sealing ring 330, an installation part 302, a first end face 304, a second end face 20, a suction device 30, a detection device 40, a first telescopic device 50, a second telescopic device 60, a controller 70 and an injector.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "secured to," "disposed on," "secured to," or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is perpendicular or nearly perpendicular to another element, it is desirable that the two elements are perpendicular, but some vertical error may exist due to manufacturing and assembly effects. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

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 invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

References to "first," "second," and "third" in this disclosure are not intended to imply a particular number or order, but rather are merely used to distinguish one name from another.

As shown in fig. 1 to 3, in one embodiment, a blood gas biochemical test card 10 is provided, which includes: the test card comprises a test card body 100, wherein the test card body 100 is provided with a first fluid pipeline 110, a test cavity 120 communicated with the liquid outlet end of the first fluid pipeline 110 and a second fluid pipeline 130 communicated with the liquid outlet end of the test cavity 120, the first fluid pipeline 110 is provided with a first liquid inlet 112, and the second fluid pipeline 130 is provided with a connecting part 132 for connecting an absorption device; the calibration liquid bag 200, the calibration liquid bag 200 is fixedly arranged on the test card body 100, and the calibration liquid bag 200 is provided with a matching part 210 butted with the first liquid inlet 112; and a valve core 300, the valve core 300 being disposed in the first fluid pipeline 110 or in the calibration liquid bag 200, the valve core 300 being provided with a spike portion 310 for puncturing the fitting portion 210.

When the blood gas biochemical test card 10 is used, as shown in fig. 5 and 6, the valve core 300 is arranged in the calibration liquid bag 200, and then the calibration liquid bag 200 is integrated on the blood gas biochemical test card 10; alternatively, as shown in fig. 7 and 8, the valve element 300 may be disposed on the first fluid channel 110 of the blood gas biochemical test card 10, and the spike 310 may be disposed toward the matching portion 210 of the calibration liquid bag 200. Thus, when calibration is required, the first fluid pipeline 110 or the calibration liquid bag 200 is only required to be pressed by an external force, and the spike portion 310 of the valve core 300 is driven to pierce the matching portion 210, so that the calibration liquid in the calibration liquid bag 200 can flow into the first fluid pipeline 110 of the blood-gas biochemical test card 10 through the first liquid inlet 112, and the calibration liquid can be guided to be sucked into the test cavity 120 through the first fluid pipeline 110 to perform a calibration process; then, the test analysis of the test solution is performed. According to the blood gas biochemical test card 10, the pricked part 310 of the valve core 300 is utilized to pierce the calibration liquid bag 200 to complete the communication between the calibration liquid bag 200 and the first liquid inlet 112, so that the calibration liquid can be prevented from flowing out due to excessive damage of the calibration liquid bag 200; in addition, the valve core 300 can be arranged in the blood gas biochemical test card 10 in various ways, so that the manufacturing process is more flexible, and the manufacturing cost is convenient to reduce.

It should be noted that the calibration solution bag 200 of the calibration solution may be made of various specific materials as long as the storage requirement of the calibration solution can be met. Such as aluminum-plastic composite films. The specific structure of the test chamber 120 may be various, such as a section of pipe or a cavity.

Based on the above embodiments, in an embodiment, after the first fluid tube 110 or the calibration fluid bag 200 is pressed in the predetermined direction, the spike portion 310 can be driven to pierce the matching portion 210 to form the liquid outlet hole 212. In this manner, the first fluid tube 110 or the calibration fluid bag 200 is pressed in the predetermined direction, so that the spike portion 310 can precisely pierce the fitting portion 210 to form the outlet hole 212.

Further, in one embodiment, as shown in fig. 4 to 8, the valve plug 300 is provided with a sealing ring 320 disposed around the spike 310; when the valve core 300 is disposed in the calibration liquid bag 200, after being pressed in the first preset direction, the sealing ring 320 can press the bag body at the outer edge of the liquid outlet hole 212 against the side wall of the first fluid pipe 110, so as to form a first sealing structure for sealing the liquid outlet hole 212, so that the calibration liquid in the calibration liquid bag 200 cannot flow into the first fluid pipe 110 through the liquid outlet hole 212 (as shown in fig. 5); when the valve core 300 is disposed in the first fluid pipeline 110, after being pressed in the second preset direction, the sealing ring 320 can be tightly attached to the inner wall of the first fluid pipeline 110 and form a second sealing structure for sealing the first inlet 112, so that the calibration solution in the calibration solution bag 200 cannot flow into the first fluid pipeline 110 through the first inlet 112 (as shown in fig. 7). In this way, after the spike portion 310 of the valve core 300 pierces the calibration solution bag 200 of the calibration solution, so that the calibration solution bag 200 forms the liquid outlet 212, the valve core 300 may be continuously pressed, so that the sealing ring 320 forms a first sealing structure with the first fluid conduit 110, or forms a second sealing structure with the first fluid conduit 110. And then can utilize sealing ring 320 to seal the play liquid hole of calibration solution bag 200 and block, so need not other instruments, can realize the on-off control of calibration solution, be convenient for control the volume of the calibration solution that flows into test cavity 120 for the calibration analysis of biochemical test card 10 of blood gas is more accurate.

Furthermore, in one embodiment, the material of the sealing ring 320 is elastic. Therefore, the liquid outlet hole 212 of the calibration liquid bag 200 is sealed by using the elastic sealing technology, and the calibration liquid bag 200 is prevented from being damaged due to extrusion, so that the calibration liquid flows outwards to influence the test result. The specific material of the seal ring 320 is selected in the prior art, and will not be described herein.

On the basis of any of the above embodiments, in an embodiment, as shown in fig. 5 and fig. 6, the calibration solution bag 200 is provided with a first film 220 capable of elastically resetting, the valve core 300 is fixedly arranged on the inner side wall of the first film 220, and the spike portion 310 is arranged towards the matching portion 210; alternatively, in another embodiment, as shown in fig. 7 and 8, the first fluid conduit 110 is provided with a second film 114 capable of elastically restoring, the valve element 300 is fixed on the inner sidewall of the second film 114, and the spike portion 310 is disposed toward the matching portion 210. Thus, after the pressing force of the calibration liquid bag 200 or the first fluid pipeline 110 is removed, the valve core 300 moves in a direction away from the liquid outlet hole 212 of the calibration liquid bag 200 by the elastic restoring force of the first membrane 220 or the second membrane 114, so that the liquid outlet hole 212 or the first liquid inlet 112 is opened, and the calibration liquid bag is automatically communicated with the first fluid pipeline. The first film 220 and the second film can be made of a composite film with good elastic restoring ability. Specifically, the first film body 220 may be formed of a PE film (polyethylene film) + aluminum film + PET film (polyethylene terephthalate film); the second film body 114 can be made of a PET film and a silicone film.

In addition to any of the above embodiments, as shown in fig. 4, in an embodiment, the valve plug 300 has a first end face 302 and a second end face 304 that are oppositely disposed, the first end face 302 has a mounting portion 330, the second end face 304 has a spike portion 310, and the spike portion 310 is oppositely disposed with respect to the mating portion 210. Thus, the valve cartridge 300 can be built into the calibration fluid bag 200 (specifically, on the first membrane 220 as described above) through the mounting portion 330, and then integrated into the blood gas biochemical test card 10; alternatively, the valve cartridge 300 can be disposed on the first fluid conduit 110 of the blood gas biochemical test card 10 (specifically, the second membrane 114 as described above), and the spike 310 can be disposed toward the calibration fluid bag. At this time, when calibration is required, the first end face 302 of the valve core 300 is pressed by an external force, so that the spike portion 310 pierces the calibration liquid bag 200 to form the liquid outlet hole 212, and the calibration liquid in the calibration liquid bag 200 can flow into the first fluid pipeline 110 of the blood-gas biochemical test card 10.

Further, in one embodiment, the connecting portion 132 has adhesive properties. Thus, the valve element 300 can be adhered to the calibration liquid or the fluid pipeline, so that the valve element 300 can be integrated conveniently.

As shown in fig. 3, in one embodiment, the spine portion 310 has a conical shape or a polygonal pyramid shape. Therefore, when the bag body is punctured by the sharp-pointed part 310, the matching part 210 can regularly crack to form a regular liquid outlet, and the damage condition of the matching part 210 can be better controlled.

It should be noted that the material of each structure of the valve element 300 can be selected in the prior art, and is not described herein again.

In addition to any of the above embodiments, as shown in fig. 1, in an embodiment, the test card body 100 further includes a waste liquid storage cavity 140 communicated with the liquid outlet end of the test cavity 120, and the liquid outlet end of the waste liquid storage cavity 140 is communicated with the liquid inlet end of the second fluid channel. Therefore, the calibration solution after calibration analysis can be pushed into or sucked into the waste liquid storage cavity 140, so that the calibration solution can be prevented from being exposed, and the retention of the calibration solution can be prevented from influencing the analysis result of the test solution. In addition, the test solution can be stored, and the test solution is prevented from being exposed (particularly, blood flows out to pollute the instrument).

The specific structure of the waste liquid storage chamber 140 may be various, such as formed by multiple sections of the same pipe, or a cavity.

In addition to any of the above embodiments, as shown in fig. 1, in an embodiment, the test card body 100 further includes a third fluid conduit 150, a liquid inlet end of the third fluid conduit 150 is used for receiving the test liquid, and a liquid outlet end of the third fluid conduit 150 is communicated with the liquid inlet end of the test cavity 120. Thus, a test fluid (e.g., blood) may be injected into third fluid conduit 150 by an injector (e.g., a syringe) in abutting communication with an inlet end of third fluid conduit 150, and then introduced into test chamber 120 via third fluid conduit 150 for testing. The inlet end of the third fluid conduit 150 may form a needle structure to facilitate access to the test fluid.

As shown in fig. 10 to 13, in another embodiment, a blood gas analyzer is further provided, which includes the blood gas biochemical test card 10, and further includes an aspirating device 20, a detecting device 30, and a controller 60 communicatively connected to the aspirating device 20 and the detecting device 30, wherein an aspirating end of the aspirating device 20 is in butt-joint communication with a connecting portion 132 of the second fluid pipeline 130, and a detecting end of the detecting device 30 is disposed in the test cavity 120.

When the blood gas analyzer is used, when calibration is needed, the first fluid pipeline 110 or the calibration liquid bag 200 is only needed to be pressed through external force (which can be manual or electric), and the sharp part 310 of the valve core 300 is driven to pierce the matching part 210, so that the calibration liquid 200 is communicated with the first fluid pipeline 110 through the first liquid inlet 112; the controller 60 is used for accurately controlling the action of the air suction device 20, sucking a proper amount of calibration liquid into the test cavity 120, and then the detection device 30 is used for analyzing the calibration liquid to complete calibration analysis; when the test solution is analyzed subsequently, the air suction device 20 may be used to suck a proper amount of test solution (such as blood) into the test chamber 120, and then the detection device 30 may be used to analyze the test solution to obtain a test solution parameter report. This blood gas analyzer is when carrying out the calibration work, and the volume of taking out that can accurate control calibration liquid guarantees that calibration liquid covers detection device 30's sense terminal completely, and accurate calibration analysis will be accomplished to accurate ground, obtains accurate calibration parameter, is favorable to improving test parameter's accuracy.

The suction device 20 may be a vacuum pump, a negative pressure suction pump, or the like capable of providing negative pressure suction. The specific structure of the detecting device 30 can be selected in the prior art, and will not be described in detail herein.

On the basis of the above embodiments, as shown in fig. 10 to 11, in an embodiment, the blood gas analyzer further includes a first telescopic device 40 in communication connection with the controller 60, and a telescopic end of the first telescopic device 40 can press against the first fluid pipeline 110 or the calibration fluid bag 200 in a preset direction, so that the spike portion 310 punctures the matching portion 210. Thus, when calibration analysis is performed, after the test card 10 is installed, only a corresponding command needs to be input, the controller 60 can control the first expansion device 40 to act, the expansion end is driven to abut against the first fluid pipeline 110 or the calibration fluid bag 200 according to a preset direction, so that the spike portion 310 pierces the matching portion 210, the calibration fluid bag 200 is communicated with the first fluid pipeline 110 through the first fluid inlet 112, then the air suction device 20 is precisely controlled to act, a proper amount of calibration fluid is sucked into the test cavity 120, and then the detection device 30 is used for analyzing the calibration fluid, so that the calibration analysis is completed. The calibration analysis process is simple to operate and high in intelligence, and an operator can complete calibration analysis without strict training.

Further, in an embodiment, referring to fig. 10 in combination with fig. 4 to 8, the telescopic end of the first telescopic device 40 can press against the first fluid conduit 110 or the calibration fluid bag 200 in a predetermined direction, so that the sealing ring 320 can seal the liquid outlet hole 212, or the sealing ring 320 can seal the first liquid inlet 112. In this way, after the spike portion 310 of the valve core 300 pierces the calibration solution bag 200 of the calibration solution, so that the calibration solution bag 200 forms the liquid outlet hole 212, the valve core 300 can be continuously pressed by using the telescopic end of the first telescopic device 40, and the sealing ring 320 can press the bag body at the outer edge of the liquid outlet hole 212 against the side wall of the first fluid pipe 110, so as to form a first sealing structure for sealing the liquid outlet hole 212, so that the calibration solution in the calibration solution bag 200 cannot flow into the first fluid pipe 110 through the liquid outlet hole 212 (as shown in fig. 5); when the valve core 300 is disposed in the first fluid pipeline 110, after being pressed in the second preset direction, the sealing ring 320 can be tightly attached to the inner wall of the first fluid pipeline 110 and form a second sealing structure for sealing the first inlet 112, so that the calibration solution in the calibration solution bag 200 cannot flow into the first fluid pipeline 110 through the first inlet 112 (as shown in fig. 7). The on-off control of the calibration liquid can be realized by utilizing the matching of the first telescopic device 40 and the valve core, so that the amount of the calibration liquid flowing into the test cavity 120 can be conveniently controlled; when the test solution is tested, the controller 60 can control the first expansion device 40 to close the liquid outlet 212, so as to prevent the calibration solution from flowing out to influence the test accuracy of the test solution.

Furthermore, in an embodiment, as shown in fig. 4 to 8, the valve core 300 has a first end face 302 and a second end face 304 that are oppositely disposed, the first end face 302 has the connecting portion 132, the second end face 304 has a spike portion 310, the spike portion 310 is oppositely disposed with the mating portion 210, and the retractable end of the first retractable device 40 is disposed in the positive direction of the first end face 302 and can push the spike portion 310 to move toward the mating portion 210. Thus, the retractable end of the first retractable device 40 can move along a straight line to achieve puncturing and on-off control. Specifically, the first telescopic device 40 may be a hydraulic rod, a pneumatic rod, a linear motor or other telescopic power output mechanism.

Specifically, as shown in fig. 5 and 6, the calibration solution bag 200 is provided with a first film 220 capable of elastically returning, the valve core 300 is fixedly disposed on an inner sidewall of the first film 220, and the spike portion 310 is disposed toward the matching portion 210; alternatively, in another embodiment, as shown in fig. 7 and 8, the first fluid conduit 110 is provided with a second film 114 capable of elastically restoring, the valve element 300 is fixed on the inner sidewall of the second film 114, and the spike portion 310 is disposed toward the matching portion 210. Thus, after the telescopic end of the first telescopic device 40 is reset, the valve core 300 moves towards the direction away from the liquid outlet hole 212 of the calibration liquid bag 200 by the elastic reset force of the first membrane 220 or the second membrane 114, so that the liquid outlet hole 212 or the first liquid inlet 112 is opened, and the calibration liquid bag is automatically communicated with the first fluid pipeline.

In addition to any of the above embodiments, in one embodiment, as shown in fig. 9 and 10, the third fluid conduit 150 is provided with a third diaphragm 152 capable of elastically returning, and the third diaphragm 152 is pressed to form a third sealing structure for closing the third fluid passage. Therefore, when the calibration solution is tested, the third membrane 152 can be pressed (manually or electrically) to form a third sealing structure, and the third fluid pipeline 150 can be closed, so that the test solution can be prevented from being mixed into the calibration solution to influence the accuracy of calibration analysis.

Further, in an embodiment, the blood gas analyzer further includes a second expansion device 50 communicatively connected to the controller 60, wherein an expansion end of the second expansion device 50 is capable of pressing the third membrane 152 to form a third sealing structure. And then the second telescoping device 50 can be utilized to realize the on-off control of the test liquid, and the accuracy of the final test parameters is improved. Specifically, the second telescopic device 50 may be a hydraulic rod, a pneumatic rod, a linear motor or other telescopic power output mechanism.

In another embodiment, a method for controlling a blood gas analyzer is provided, which includes the steps of:

pressing against the first fluid pipe 110 or the calibration fluid bag 200 in a predetermined direction, so that the spike portion 310 pierces the matching portion 210 and forms the liquid outlet hole 212;

sucking the calibration liquid of the calibration liquid bag 200 into the test cavity 120 of the blood gas test card 10 for calibration analysis;

after calibration analysis is completed, the test solution is then aspirated or pushed into the test chamber 120 for test analysis.

By using the control method of the blood gas analyzer, as shown in fig. 12, calibration analysis of the calibration solution and test analysis of the test solution can be automatically realized, an operator only needs to insert the syringe 70 storing the test solution when the test is started, and the operator can leave after the insertion, so that the operation time of the operator is saved, the working strength is reduced, the problems of leakage of the test solution, proper amount of the test solution and the like do not need to be worried about, and the accuracy of the test parameters can be improved.

On the basis of the above embodiments, in an embodiment, as shown in fig. 12 and 13, after the calibration analysis is completed, the method further includes: the outlet 212 of the calibration fluid bag 200 is closed, and the test fluid is then sucked into the test chamber 120 for test analysis. So, can utilize getter device 20 to realize the analysis of calibration solution and the analysis of test solution, be favorable to practicing thrift the cost, make blood gas analysis appearance more miniaturized simultaneously. In addition, the accurate control of the amount of extraction by the air suction device 20 can further improve the test accuracy. Specifically, the air suction device 20 is a vacuum pump, and the pumping amount of the calibration solution and the test solution can be accurately controlled by controlling the number of working steps of the linear stepper motor of the vacuum pump, so as to ensure that the calibration solution and the test solution completely cover the sensor module.

Further, compared with the prior art, the control method can automatically suck the calibration liquid and the test liquid by adopting the air suction device 20, is convenient for controlling the suction amount, and can effectively solve the problems of test liquid leakage, test liquid contact with air, proper suction amount of the test liquid and the like; meanwhile, the operation requirement of an operator can be reduced, the operator only needs to insert the injector, the test work is automatically completed by an instrument, and the automatic operation is realized.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A biochemical blood gas test card, comprising:

the test card comprises a test card body, a first liquid inlet and a second liquid inlet, wherein the test card body is provided with a first fluid pipeline, a test cavity communicated with the liquid outlet end of the first fluid pipeline and a second fluid pipeline communicated with the liquid outlet end of the test cavity;

the calibration liquid bag is fixedly arranged on the test card body and is provided with a matching part butted with the first liquid inlet; and

and the valve core is arranged in the first fluid pipeline or in the calibration liquid bag, and is provided with a sharp part for puncturing the matching part.

2. The biochemical blood gas test card of claim 1, wherein the first fluid channel or the calibration fluid bag is pressed in a predetermined direction to drive the spike portion to pierce the mating portion to form a fluid outlet.

3. The biochemical blood gas test card of claim 2, wherein the valve core is provided with a sealing ring disposed around the spike portion; when the valve core is arranged in the calibration liquid bag, the sealing ring can seal the liquid outlet hole after being pressed in a first preset direction; when the valve core is arranged in the first fluid pipeline, the sealing ring can seal the first liquid inlet after being pressed in a second preset direction.

4. The biochemical blood gas test card of claim 3, wherein the sealing ring is made of elastic material.

5. The biochemical blood gas test card of claim 1, wherein the calibration liquid bag is provided with a first membrane body capable of elastically resetting, the valve core is fixedly arranged on the inner side wall of the first membrane body, and the spine portion is arranged towards the matching portion; or the first fluid pipeline is provided with a second membrane body capable of elastically resetting, the valve core is fixedly arranged on the inner side wall of the second membrane body, and the spine part faces the matching part.

6. The biochemical blood gas test card of claim 1, wherein the valve core has a first end surface and a second end surface opposite to each other, the first end surface has a mounting portion, the second end surface has the spike portion, and the spike portion is opposite to the mating portion.

7. The biochemical blood gas test card of any one of claims 3 to 6, wherein the test card body is further provided with a waste liquid storage cavity communicated with the liquid outlet end of the test cavity, and the liquid outlet end of the waste liquid storage cavity is communicated with the liquid inlet end of the second fluid channel.

8. The biochemical blood gas test card of claim 7, wherein the test card body further comprises a third fluid conduit, the liquid inlet end of the third fluid conduit is used for receiving the test liquid, and the liquid outlet end of the third fluid conduit is communicated with the liquid inlet end of the test cavity.

9. A blood gas analyzer, comprising the biochemical blood gas test card of claim 8, further comprising an aspirator, a detection device, and a controller in communication with the aspirator and the detection device, wherein an aspirating end of the aspirator is in communication with the second fluid conduit through the connecting portion, and a detection end of the detection device is disposed in the test chamber.

10. The blood gas analyzer of claim 9, further comprising a first telescopic device in communication connection with the controller, wherein a telescopic end of the first telescopic device can press against the first fluid conduit or the calibration fluid bag in the preset direction, so that the spike pierces the mating portion.

11. The blood gas analyzer of claim 10, wherein the telescopic end of the first telescopic device can press against the first fluid pipeline or the calibration fluid bag in the preset direction, so that the sealing ring can seal the liquid outlet hole, or the sealing ring can seal the first liquid inlet hole.

12. The blood gas analyzer of claim 9, wherein the valve core has a first end surface and a second end surface opposite to each other, the first end surface has a connection portion, the second end surface has the spike portion, the spike portion is opposite to the engagement portion, and the retractable end of the first retractable device is disposed in the positive direction of the first end surface and can push the spike portion to move toward the engagement portion.

13. The blood gas analyzer of any one of claims 9-12, wherein the third fluid conduit is provided with a resiliently resettable third diaphragm that is capable of being compressed to form a third sealing structure closing the third fluid passage.

14. The blood gas analyzer of claim 13, further comprising a second bellows in communication with the controller, a bellows end of the second bellows capable of pressing against the third diaphragm to form the third seal.

15. A control method of a blood gas analyzer is characterized by comprising the following steps:

16. The method for controlling a blood gas analyzer according to claim 15, further comprising, after the calibration analysis is completed: and closing the liquid outlet hole of the calibration liquid bag, and then sucking the test liquid into the test cavity for test analysis.