CN109633139B

CN109633139B - Medical test card and blood gas test system

Info

Publication number: CN109633139B
Application number: CN201710930856.2A
Authority: CN
Inventors: 黄高祥; 林朝
Original assignee: Edan Instruments Inc
Current assignee: Edan Instruments Inc
Priority date: 2017-10-09
Filing date: 2017-10-09
Publication date: 2022-06-24
Anticipated expiration: 2037-10-09
Also published as: CN109633139A

Abstract

A medical test card and a blood gas test system, the blood gas test system comprising: medical test card, blood gas tester, reagent package and hemostix, the last valve controller that has of blood gas tester, medical test card include the test card main part and form the liquid way passageway in the test card main part, are provided with the valve on the liquid way passageway, and the valve includes: the plug hole is communicated with the liquid channel, one end of the elastic plug is embedded into the liquid channel, a gap is formed between the inner end surface of the elastic plug and the inner wall of the liquid channel, and the valve controller is controlled to press or release the elastic plug so as to realize the on-off of the valve. This medical test card valve all thinks about ingeniously, and simple structure installs on the consumptive material, can not increase the consumptive material cost, and the valve switch process only relies on the little space deformation of elastic component, can realize the control of pipeline break-make, has ensured the accuracy of sample measuring result.

Description

Medical test card and blood gas test system

Technical Field

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

Background

The blood consumption required in the test process of the medical in-vitro diagnostic equipment severely limits the market competitiveness of the equipment, and various general external diagnostic equipment suppliers strive to reduce the blood consumption as much as possible under the condition of not influencing the measurement result in order to measure the trace blood consumption. In the measuring equipment without pollution of instruments, the on-off control structure of each liquid path is realized on consumable materials, and the aim of jointly searching in the industry is how to achieve the minimum loss in the control process.

The micro-fluidic system of the blood gas test card of the commonly used medical in-vitro diagnostic equipment usually needs to add a relatively complex switch to be assembled into a consumable, the cost of the consumable is increased, or the function of the on-off valve is realized by the modes of self film pasting and the like, but the design of realizing the on-off valve by the self film pasting usually needs a relatively large cavity to allow the deformation of the film to realize the on-off of the valve, so that a part of a measurement sample can be remained in the cavity in the measurement process, the measurement sample amount is increased, meanwhile, the micro target is not beneficial, and due to the existence of the cavity, the change of a compressed or rebounded adhesive film drives the relatively large volume change in the cavity when the valve is closed or disconnected, the fluctuation of the whole liquid path can be caused, and the measurement result of the sample is influenced.

Disclosure of Invention

The invention aims to solve the technical problem of providing a medical test card to solve the problems of instrument pollution, high sample loss and the like in the medical in-vitro detection process.

The invention also aims to provide a blood gas testing system to solve the problems of instrument pollution, high sample loss and the like in the in-vitro biochemical blood gas testing process

In order to solve the first technical problem, the present invention provides a medical test card, including: test card main part and the liquid way passageway that forms in the test card main part, be provided with the valve on the liquid way passageway, the valve includes: the elastic plug is capable of elastically deforming under the action of external force to fill the gap and restore to the original shape after the external force disappears.

Preferably, the inner wall of the liquid path channel is provided with a slope surface inclined relative to the inner end surface of the elastic plug, and the slope surface abuts against the elastic plug to form the gap between the inner end surface of the elastic plug and the slope surface.

Preferably, the elastic plug is cylindrical, the inner end face of the elastic plug is a plane perpendicular to the axial direction of the elastic plug, and the included angle between the slope face and the inner end face of the elastic plug is 10-30 degrees.

Preferably, the inner end surface of the elastic plug embedded in the liquid channel is an arch surface, a concave surface or an inclined surface, and the position of the inner wall of the liquid channel facing the inner end surface of the elastic plug is a plane perpendicular to the axial direction of the plug hole, so that the gap is formed between the inner end surface of the elastic plug and the inner wall of the liquid channel.

Preferably, the inner end surface of the elastic plug is a spherical crown surface, a conical surface or a frustum surface which is arched towards the inner wall of the liquid channel.

Preferably, the inner end surface of the elastic plug is concave, a concave cavity is formed at the concave part, at least two communication ports communicated with the concave cavity are formed in the peripheral edge of the end part of the elastic plug, and the communication ports are communicated with the liquid path channel.

Preferably, the inner end surface of the elastic plug is an inclined surface which is not perpendicular to the axial direction of the elastic plug; the included angle between the inclined plane and the plane is 10-30 degrees.

More preferably, the elastic plug is a rubber plug.

Preferably, the valve further comprises a valve body partially embedded in the liquid path channel, the valve body is provided with a fluid inlet and a fluid outlet, the plug hole is formed in the valve body and communicated with the fluid inlet and the fluid outlet, and the fluid inlet and the fluid outlet are respectively communicated with the liquid path channel.

Preferably, the liquid path channel extends from one side of the test card main body to the other side at the position where the valve body is arranged to form a gate-shaped channel.

More preferably, the liquid path channel includes: the groove-shaped channel is concavely arranged on the front face of the test card main body, a notch is formed in the surface of the test card main body by the groove-shaped channel, and a channel adhesive film for sealing the notch covers the notch.

More preferably, at least one protrusion is provided adjacent to the fluid inlet, said protrusion protruding into said receptacle.

To solve the second technical problem, the present invention provides a blood gas testing system, including: medical test card, blood gas tester, reagent package and hemostix, the last valve control that has of blood gas tester, be provided with the butt joint on the liquid path passageway of medical test card the reagent package interface of reagent package with the butt joint the hemostix interface of hemostix, valve control is controlled and presses or releases the elasticity stopper realizes the valve break-make.

Compared with the prior art, the invention has the following beneficial effects: the medical test card valve has the advantages of ingenious conception and simple structure, is installed on consumables, does not increase consumable cost, is designed on the consumables, realizes no liquid path of an instrument, and ensures that the instrument is not polluted; and the valve opening and closing process can realize the control of the on-off of the channel only by means of the tiny space deformation of the elastic element, the impact generated by the tiny deformation basically has negligible influence on the measurement sample in the liquid channel of the test card, and the accuracy of the measurement result of the sample is ensured.

Drawings

FIG. 1 is a front perspective view of a medical test card according to a first embodiment of the present invention;

FIG. 2 is a rear perspective view of a medical test card according to a first embodiment of the present invention;

FIG. 3 is an enlarged view of the valve on the back of the medical test card according to the first embodiment of the present invention;

FIG. 4 is a front view of a medical test card according to a first embodiment of the present invention;

FIG. 5 is a cross-sectional view taken along line 1-1 of FIG. 4;

FIG. 6 is a schematic view showing the valve opening state of the medical test card according to the first embodiment of the present invention;

FIG. 7 is a schematic view of a valve-closed state of a medical test card according to a first embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a blood gas testing system according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of a calibration solution extraction process of the blood gas testing system shown in FIG. 8;

FIG. 10 is a schematic diagram of a test fluid extraction process of the blood gas test system of FIG. 8;

FIG. 11 is a schematic structural diagram of a blood gas tester according to an embodiment of the present invention;

FIG. 12 is a schematic view of the open state of the valve according to the second embodiment of the present invention;

FIG. 13 is a schematic view of a second embodiment of the present invention in a valve closed state;

FIG. 14 is a schematic view of the valve opening state of the third embodiment of the present invention;

fig. 15 is a schematic perspective view of a resilient plug of a valve according to a third embodiment of the present invention;

fig. 16 is a diagram illustrating an open state of a valve according to a fourth embodiment of the present invention.

The reference numerals are explained below:

1. a blood gas tester; 12. a valve controller; 2. a blood gas test card; 21. a test card body; 22. a liquid path channel; 221. a main channel; 2211. a trough-shaped channel; 1122. pasting a film on the channel; 222. a curved channel; 2221. a first channel; 2222. a second channel; 2223. a slope surface; 2224. an inner wall; 23. a valve; 230. a valve body; 2301. a fluid inlet; 2302. a fluid outlet; 2304. a protrusion; 231. plugging the hole; 232. an elastic plug; 2321. an inner end surface; 2322. a concave cavity; 2323. a communication port; 234. pasting a film on the valve; 241. a calibration liquid channel; 2411. a reagent pack interface; 242. a test fluid channel; 2421. a hemostix interface; 243. a waste liquid channel; 2431. a vacuum pump interface; 244. a test zone; 3. a reagent pack; 4. a hemostix; 5. a vacuum pump.

Detailed Description

For further explanation of the principles and construction of the present invention, reference will now be made in detail to the preferred embodiments of the present invention, which are illustrated in the accompanying drawings.

The medical test card provided by the invention comprises but is not limited to a blood gas test card for detecting blood gas indexes such as blood acid-base balance imbalance, oxygen deficiency degree and oxygen deficiency degree, and can also be used for detecting other items except the blood gas indexes, and any medical test consumable material provided with a liquid channel for circulating a test sample and/or a test reagent and provided with an on-off valve on the liquid channel belongs to the scope of the medical test card provided by the invention.

Referring to fig. 1, the medical test card includes: a test card body 21 and a fluid path channel 22 formed on the test card body 21. The liquid path channel 22 is used for extracting the test solution and the reagent, so that the test solution and the reagent generate biochemical reaction in the liquid path channel 22, and the related biochemical indexes of the test solution are indirectly reflected by measuring the reaction result. The liquid channel 22 is provided with a valve 23, and the opening and closing of the valve 23 can realize the opening and the disconnection of the channel where the valve 23 is positioned, so that the liquid channel 22 can sequentially extract a plurality of different liquids to a preset position of the liquid channel 22 according to a set sequence to carry out biochemical reaction.

The present invention mainly protects the structure of the valve 23 on the medical test card, and the structure of the valve 23 on the medical test card will be described in detail below with reference to a plurality of embodiments.

A first embodiment of the valve.

Referring to fig. 2 to 3, the valve 23 includes: the receptacle 231 and a resilient plug 232 that is a tight fit in the receptacle 231.

The elastic plug 232 is made of an elastic material, and can deform under the action of external force and restore to the original shape after the external force disappears. The elastic plug 232 may be a rubber plug, and the material may be resin, plastic, or silica gel, but not limited thereto, and any material that can deform under the action of an external force and recover to the original shape after the external force disappears may be used to manufacture the elastic plug 232 of the present invention.

Referring to fig. 2 to 7, the plug hole 231 communicates with the liquid passage channel 22, one end of the resilient plug 232 is inserted into the liquid passage channel 22, an end surface of the resilient plug 232 inserted into the liquid passage channel 22 is an inner end surface 2321, and a slope surface 2223 inclined with respect to the inner end surface 2321 of the resilient plug 232 is formed at a position where an inner wall 2224 of the liquid passage channel 22 faces the inner end surface 2321 of the resilient plug 232. The elastic plug 232 is made of an elastic material, and the elastic plug 232 is pushed up by the slope surface 2223 when no external force acts on the elastic plug 232, so that a gap is formed between the inner end surface 2321 of the elastic plug 232 and the inner wall 2224 of the liquid path channel 22, the valve 23 is opened, and the liquid path channel 22 is ensured to be smooth. When the elastic plug 232 is acted by external force, the elastic plug 232 can generate elastic deformation to fill the gap, so that the valve 23 is shut off, and the liquid channel 22 is blocked at the position of the valve 23; when the external force disappears, the elastic plug 232 is restored, and at the same time, the elastic plug 232 is pushed up again by the slope surface 2223, so that the gap between the inner end surface 2321 of the elastic plug 232 and the inner wall 2224 of the liquid passage 22 is restored, and the valve 23 is opened again.

The elastic plug 232 may preferably have a cylindrical shape, and in particular, in the present embodiment, the elastic plug 232 has a cylindrical shape with a circular cross section.

In this embodiment, the inner end surface 2321 of the spring plug 232 is a plane perpendicular to its own axial direction, and the included angle between the slope surface 2223 and the inner end surface 2321 of the spring plug 232 can be set according to the size of the cross section of the channel and the flow demand of the channel. In this embodiment, the included angle between the slope surface 2223 and the inner end surface 2321 of the spring plug 232 is 15 degrees, and in other embodiments, the included angle between the slope surface 2223 and the inner end surface 2321 of the spring plug 232 is not limited thereto, as long as effective on-off control can be achieved.

In a preferred embodiment, an included angle between the slope surface 2223 and the inner end surface 2321 of the spring plug 232 is preferably 10 degrees to 30 degrees, so as to form a gap with a proper size between the inner end surface 2321 of the spring plug 232 and the slope surface 2223, on one hand, it is ensured that fluid can smoothly flow in the fluid passage 22, and on the other hand, it is also convenient to realize micro-control, so that the valve 23 is switched off by means of micro-deformation of the spring plug 232 to realize on-off control of the passage, and impact generated by the micro-deformation has a negligible influence on a measurement sample in the passage, thereby avoiding influencing accuracy of a measurement result.

Referring to fig. 3, the valve 23 further includes a valve body 230 partially inserted into the fluid passage 22, the valve body 230 has a fluid inlet 2301, a fluid outlet 2302 and a valve cavity communicating the fluid inlet 2301 and the fluid outlet 2302, the plug hole 231 is formed on the valve body 230 and communicates with the valve cavity, and the fluid inlet 2301 and the fluid outlet 2302 respectively communicate with the fluid passage 22.

The valve body 230 is beneficial to enhancing the hardness of the periphery of the plug hole 231, providing a certain supporting force for the elastic plug 232, ensuring the stable state of the elastic plug 232 when the elastic plug 232 is not stressed, keeping the valve 23 open, and helping the elastic plug 232 to rebound and restore to the original state after the external force action disappears. In addition, the valve body 230 is also beneficial to increasing the contact surface between the elastic plug 232 and the plug hole 231, improving the tight fit degree between the elastic plug 232 and the plug hole 231, ensuring channel sealing and preventing test liquid from leaking.

The surface of the valve body 230 may also be covered with a valve film 234, and the valve film 234 is used to seal the elastic plug 232 and the plug hole 231, so as to further improve the sealing performance of the blood gas test card 2 and prevent the test liquid from leaking to pollute the instrument.

Referring to fig. 4 to 7, the fluid passage 22 extends from one side of the test card body to the other side at the position where the valve body 230 is disposed, thereby forming a gate-shaped curved passage. Specifically, the liquid path channel 22 includes: a main channel 221 provided on the front surface of the test card body 21, and a door-shaped curved channel 222 embedded in the test card body 21 and protruding toward the rear surface of the test card body 21. The curved channel 222 communicates with the main channel 221 in a zigzag shape, and the curved channel 222 includes: two first passages 2221 perpendicular to the surface of the test card body 21 and a second passage 2222 connected between the two first passages 2221 and parallel to the surface of the test card body 21. The valve body 230 is provided on the back of the test card body 21 and inserted into the second passage 2222. The curved channel 222 is used for providing a certain axial supporting force for the elastic plug 232, so that the state of the elastic plug 232 is stable, the deformation and recovery of the elastic plug 232 are facilitated, and the opening and closing functions of the valve 23 are stably exerted.

Referring to fig. 6 and 7, further, the other part of the liquid path channel 22 except the curved channel 222 is a groove-shaped channel 2211 concavely arranged on the front surface of the test card body 21, the groove-shaped channel 2211 forms a notch on the surface of the test card body 21, and the notch is covered with a channel adhesive film 1122 for closing the notch. The groove-shaped channel 2211 is easy to produce and form, and is beneficial to reducing the cost of the blood gas test card 2.

Referring to fig. 3, 6 and 7, the fluid inlet 2301 of the valve body 230 is in abutting communication with the second channel 2222 of the curved channel 222, the fluid outlet 2302 of the valve body 230 is in abutting communication with the first channel 2221 of the curved channel 222, the ramp surface 2223 is opposite to the plug hole 231, and the fluid outlet 2302 is opened on the ramp surface 2223 such that the fluid outlet 2302 faces the inner end surface 2321 of the resilient plug 232, so that, when the valve 23 needs to be closed, the resilient plug 232 only needs to be slightly deformed to press the ramp surface 2223 and seal the fluid outlet 2302 of the ramp surface 2223.

Referring to fig. 3, two protrusions 2304 are further disposed near two sides of the fluid inlet 2301 of the valve body 230, the two protrusions 2304 protrude into the plug hole, and when the elastic plug 232 is not acted by an external force, the two protrusions 2304 jack up the elastic plug 232 outwards from a position where a side surface of the elastic plug 232 is connected with the inner end surface 2321, so as to ensure that the fluid inlet 2301 is unblocked.

In the embodiment, the protrusion 2304 at the fluid inlet 2301 and the slope surface 2223 at the fluid outlet 2302 jointly act on the resilient plug 232, so that the fluid inlet 2301 and the fluid outlet 2302 of the resilient plug 232 are unblocked when no external force acts on the resilient plug, and the valve 23 is ensured to be opened reliably.

In other embodiments, one protrusion 2304 or a greater number of protrusions 2304 may also be provided adjacent fluid inlet 2301; alternatively, the protrusion 2304 is omitted, and the valve 23 is ensured to be opened only by the slope surface 2223 abutting against the resilient plug 232; alternatively, the ramp surfaces 2223 may be omitted and the valve 23 may be opened only by the protrusions 2304 abutting against the resilient plug 232.

The medical test card of the present embodiment is specifically a blood gas test card 2, and the main channel 221 of the blood gas test card 2 includes a calibration liquid channel 241, a test liquid channel 242, and a waste liquid channel 243. One ends of the calibration liquid channel 241, the test liquid channel 242, and the waste liquid channel 243 are converged together; the other end of the test solution channel 242 is provided with a hemostix interface 2421; the other end of the calibration liquid channel 241 is provided with a reagent pack interface 2411, and the other end of the waste liquid channel 243 is provided with a vacuum pump interface 2431. Test zone 244 is located at waste channel 243. The testing liquid channel 242 is provided with a valve 23, and the testing liquid channel 242 is provided with a bent channel 222 corresponding to the position where the valve 23 is arranged.

The blood test card can be used in a blood gas test system and used for in vitro blood gas index detection and analysis. Referring to fig. 8, the blood gas test system includes: the blood gas test card 2, the reagent pack 3, the blood collector 4 and the vacuum pump 5. Blood sampler 4 interfaces with blood sampler interface 2421 of blood gas test card 2 for providing the measured blood. The reagent pack 3 is docked with the reagent pack interface 2411 of the blood gas test card 2 for providing the calibration solution. The vacuum pump 5 is in butt joint with a vacuum pump interface 2431 of the blood gas test card 2 and used for providing power for the liquid path.

Referring to fig. 9, in addition, the blood gas testing system of the present embodiment further includes a blood gas tester 1, the blood gas tester 1 has a socket for inserting the blood gas testing card 2, and the blood gas tester 1 has a valve controller 12 for controlling the on/off of the fluid passage 22 by pressing or releasing the elastic plug 232.

Referring to fig. 6 and 7, the valve controller 12 may be embodied as a pressing member. When the valve 23 on the blood gas test card 2 is closed in advance, the pressing piece is controlled to press the elastic plug 232, the elastic plug 232 deforms immediately to close the valve 23, and at the moment, the test liquid channel 242 is blocked. When the valve 23 on the blood gas test card 2 is opened in advance, the pressing piece is controlled to be away from the elastic plug 232 to release the pressing of the elastic plug 232, the elastic plug 232 is restored immediately to open the valve 23, and at the moment, the test liquid channel 242 is unblocked.

Referring to fig. 8 to 11, the blood gas test system works as follows:

after the blood sampling of the hemostix 4 is finished, the hemostix interface 2421 on the blood gas test card 2 is butted with the blood gas test card 2, the blood gas test card 2 is inserted into the blood gas test instrument 1, the reagent bag interface 2411 and the vacuum pump interface 2431 arranged at the lower end of the blood gas test card 2 are respectively connected with the reagent bag 3 and the vacuum pump 5, and at the moment, the blood gas test card 2, the hemostix 4, the reagent bag 3 and the vacuum pump 5 form a blood gas test system. Then, the blood gas tester 1 starts automatic sample detection without manual operation, thereby reducing the error of manual operation and avoiding the risk of infection of the human body on the sample in the operation process.

Specifically, firstly, a calibration operation is performed, and a specific calibration process is as follows: the blood tester 1 controls the valve controller 12 to work, the valve controller 12 presses the elastic plug 232, so that the elastic plug 232 presses the slope surface 2223 to block a fluid outlet 2302 of the slope surface 2223, the valve 23 is closed, the test liquid channel 242 is disconnected, and the calibration liquid channel 241 is communicated with the waste liquid channel 243; and simultaneously, the blood gas tester 1 works, the calibration liquid channel 241 of the reagent pack 3 is opened, the vacuum pump 5 starts to work, the calibration liquid in the reagent pack 3 is extracted into the blood gas test card 2 and completely covers the test area 244, the extraction of the calibration liquid is completed, and at the moment, the instrument starts calibration measurement and completes calibration work.

Then, sample extraction is carried out and sample testing is completed, and the specific process is as follows: the blood gas tester 1 closes the calibration liquid channel 241 of the reagent pack 3, the valve controller 12 releases the elastic plug 232, so that the elastic plug 232 leaves the slope 2223, the valve 23 is opened to connect the test liquid channel 242, then, the vacuum pump 5 works again, the test sample in the blood collector 4 is extracted into the blood gas test card 2 and completely covers the measurement area of the blood gas test card 2, the blood gas tester 1 starts sample measurement at the moment when the extraction of the test sample is finished, and the measurement result is displayed after the sample measurement work is finished.

It should be noted that, in the above embodiment, the valve 23 is disposed on the testing liquid channel 242 of the blood gas testing card 2, in other embodiments, the valve 23 may be disposed on the calibration liquid channel 241 or the waste liquid channel 243 of the blood gas testing card 2, or the valves 23 may be disposed on any two of the testing liquid channel 242, the calibration liquid channel 241 and the waste liquid channel 243, respectively, as required.

In other embodiments, the structure of the valve 23 on the fluid passage 22 of the medical test card is not the only structure, but the structure can be implemented in various ways as follows.

A second embodiment of the valve.

Referring to fig. 12, the valve 23 of the present embodiment is different from the valve 23 of the first embodiment in that the shape of the resilient plug 232 is different, and the other structures are the same as those of the above embodiments.

In the present embodiment, the inner end surface 2321 of the spring plug 232 facing the liquid passage channel 22 is a spherical crown surface that is arched in the direction of the inner wall 2224 of the liquid passage channel 22, and the inner wall 2224 of the liquid passage channel 22 facing the inner end surface 2321 of the spring plug 232 is a plane perpendicular to the axial direction of the plug hole 231. When the elastic plug 232 is not acted by external force, the central part of the inner end surface 2321 of the elastic plug 232 is in contact with the inner wall 2224 of the liquid channel 22, so that a gap is formed between the circumferential edge of the inner end surface 2321 of the elastic plug 232 and the inner wall 2224 of the liquid channel 22, and the liquid channel 22 is unblocked.

Referring to fig. 13, as in the first embodiment of the valve 23, the elastic plug 232 is also elastically deformed to press against the inner wall 2224 of the liquid path channel 22 when being subjected to an external force, so as to fill up a gap between the elastic plug 232 and the inner wall 2224 of the liquid path channel 22, thereby disconnecting the portion of the liquid path channel 22.

In other embodiments, the inner end surface 2321 of the elastic plug 232 may also be a conical surface or a conical table surface, and similarly, the elastic plug 232 whose inner end surface 2321 is a conical surface or a conical table surface may also contact with the inner wall 2224 of the liquid path channel 22 through the central portion of the end surface thereof, so that a gap is formed between the circumferential edge of the inner end surface 2321 of the elastic plug 232 and the inner wall 2224 of the liquid path channel 22, and the liquid path channel 22 is unblocked; and when the external force is applied, the elastic plug 232 can be elastically deformed to fill the gap between the elastic plug 232 and the inner wall 2224 of the liquid path channel 22, so that the liquid path channel 22 is disconnected.

A third embodiment of the valve.

Referring to fig. 14 and 15, the valve 23 of the present embodiment is different from the valve 23 of the first embodiment in that the shape of the resilient plug 232 is different, and the other structures are the same as those of the above-described embodiment.

The inner end surface 2321 of the spring plug 232 of the embodiment is recessed, the position of the inner wall 2224 of the liquid channel 22 facing the inner end surface 2321 of the spring plug 232 is a plane perpendicular to the axial direction of the plug hole 231, the recessed part of the inner end surface 2321 of the spring plug 232 forms a recessed cavity 2322, the peripheral edge of the end part of the spring plug 232 is provided with at least two communication ports 2323 which are communicated with the recessed cavity 2322, the communication ports 2323 are communicated with the liquid channel 22, and in the case that the valve body 230 is arranged in the liquid channel 22, the communication ports 2323 are respectively communicated with the fluid inlet 2301 and the fluid outlet 2302 on the valve body 230.

When the elastic plug 232 is not applied with an external force, the edge of the inner end surface 2321 of the elastic plug contacts the inner wall 2224 of the liquid path channel 22, a gap is formed between the center of the inner end surface 2321 and the inner wall 2224 of the liquid path channel 22 through the concave cavity 2322, the concave cavity 2322 is communicated with the liquid path channel 22 through the communication port 2323, and the liquid path channel 22 is opened.

When the spring plug 232 is subjected to external extrusion force, the inner end surface 2321 of the spring plug 232 is easily expanded in the radial direction due to the existence of the concave cavity 2322, so that the deformation can be generated only by small external force, the concave cavity 2322 and the communication port 2323 disappear, the inner wall 2224 of the liquid path channel 22 is pressed, and the liquid path channel 22 is disconnected.

The on-off control of the channel is realized by means of micro deformation of the elastic plug 232, and the impact generated by the micro deformation basically has negligible influence on the measurement sample in the channel, so that the influence on the accuracy of the measurement result is avoided.

A fourth embodiment of the valve.

Referring to fig. 16, the valve 23 of the present embodiment is different from the valve 23 of the first embodiment in that the shape of the resilient plug 232 is different, and the other structures are the same as those of the above embodiments.

The inner end surface 2321 of the resilient plug 232 of the present embodiment is an inclined surface which is not perpendicular to the axial direction thereof, and the inner wall 2224 of the liquid path channel 22 facing the inner end surface 2321 of the resilient plug 232 is a plane perpendicular to the axial direction of the plug hole 231.

When the elastic plug 232 is not acted by external force, one end of the inclined surface of the elastic plug 232 is abutted against the inner wall 2224 of the liquid path channel 22, so that an angular gap is formed between the inner end surface 2321 of the elastic plug 232 and the inner wall 2224 of the liquid path channel 22, the valve 23 is opened, and the liquid path channel 22 is unblocked.

When the elastic plug 232 is acted by external force, the elastic plug 232 can be elastically deformed to fill the gap, so that the valve 23 is closed, the liquid channel 22 is blocked at the position of the valve 23, and the liquid channel 22 is disconnected.

The inclined plane of the inner end surface 2321 of the spring plug 232 is preferably inclined at an angle of 10 to 30 degrees relative to the inner wall 2224 of the planar liquid channel 22, so that a gap with a proper size is formed between the inner end surface 2321 of the spring plug 232 and the inner wall 2224 of the liquid channel 22, on one hand, fluid can be ensured to flow smoothly in the liquid channel 22, and on the other hand, micro-control is facilitated, so that the on-off control of the channel is realized by means of micro-deformation of the spring plug 232 in the turn-off process of the valve 23, and the impact generated by the micro-deformation has a negligible influence on a measurement sample in the channel, thereby avoiding influencing the accuracy of a measurement result.

In conclusion, the medical test card valves of the embodiments of the invention have ingenious conception and simple structure, are installed on consumables, do not increase consumable cost, and are designed on consumables, so that no liquid path of an instrument is realized, and the instrument is ensured not to be polluted; and the valve opening and closing process only depends on the tiny space deformation of the elastic element, so that the on-off control of the pipeline can be realized, the impact generated by the tiny deformation basically has negligible influence on the measurement sample in the liquid channel of the test card, and the accuracy of the sample measurement result is ensured.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings are included in the present invention.

Claims

1. A medical test card, comprising: test card main part and the liquid way passageway that forms in the test card main part, be provided with the valve on the liquid way passageway, the valve includes: the elastic plug is embedded into the liquid channel, the inner end face of the liquid channel is an arch face, a concave face or an inclined face, a gap is formed between the inner end face and the inner wall of the liquid channel when the elastic plug is not stressed, and the elastic plug can be elastically deformed under the action of external force to fill the gap and restore to the original shape after the external force disappears.

2. The medical test card according to claim 1, wherein the inner end surface of the liquid passage inner wall facing the resilient plug is a plane perpendicular to the axial direction of the plug hole to form the gap between the inner end surface of the resilient plug and the inner wall of the liquid passage inner wall.

3. The medical test card of claim 2, wherein the inner end surface of the resilient plug is a spherical crown surface, a conical surface, or a frustum surface that is arched toward the inner wall of the fluid passage.

4. The medical test card of claim 2, wherein the inner end surface of the elastic plug is concave, and the concave part forms a concave cavity, and the peripheral edge of the end part of the elastic plug is provided with at least two communication ports communicated with the concave cavity, and the communication ports are communicated with the liquid path channel.

5. The medical test card of claim 2,

the inner end surface of the elastic plug is an inclined surface which is not perpendicular to the axial direction of the elastic plug;

the included angle between the inclined plane and the plane is 10-30 degrees.

6. The medical test card of any one of claims 1-5, wherein the resilient plug is a rubber plug.

7. The medical test card of any one of claims 1-5, wherein the valve further comprises a valve body partially embedded in the fluid path channel, the valve body having a fluid inlet and a fluid outlet, the plug hole being open in the valve body and communicating with the fluid inlet and the fluid outlet, and the fluid inlet and the fluid outlet communicating with the fluid path channel, respectively.

8. The medical test card of claim 7, wherein the fluid passage extends from one side of the test card body to the other side at a position where the valve body is disposed to form a gate-shaped curved passage.

9. The medical test card of any one of claims 1-5, wherein the fluid path channel comprises: the groove-shaped channel is concavely arranged on the front face of the test card main body, a notch is formed in the surface of the test card main body by the groove-shaped channel, and a channel adhesive film for sealing the notch covers the notch.

10. The medical test card of claim 7, wherein at least one protrusion is disposed adjacent said fluid inlet, said protrusion protruding into said receptacle.

11. A medical test card, comprising: test card main part and the liquid way passageway that forms in the test card main part, be provided with the valve on the liquid way passageway, the valve includes: the elastic plug can generate elastic deformation under the action of external force to fill the gap, and can restore to the original shape after the external force disappears;

the inner wall of the liquid path channel faces the inner end face of the elastic plug and is provided with a slope face which inclines relative to the inner end face of the elastic plug, and the slope face abuts against the elastic plug to form the gap between the inner end face of the elastic plug and the slope face.

12. The medical test card of claim 11, wherein the resilient plug is cylindrical, the inner end surface of the resilient plug is a plane perpendicular to the axial direction of the resilient plug, and the slope surface forms an angle of 10 to 30 degrees with the inner end surface of the resilient plug.

13. A blood gas testing system, comprising: the medical test card, the blood gas test instrument, the reagent pack and the blood sampling instrument according to any one of claims 1 to 12, wherein the blood gas test instrument has a valve controller, a liquid path channel of the medical test card is provided with a reagent pack interface for connecting the reagent pack and a blood sampling instrument interface for connecting the blood sampling instrument, and the valve controller is controlled to press or release the elastic plug to realize the on-off of the valve.