CN114636838A - Gas circuit device of sample analyzer - Google Patents

Gas circuit device of sample analyzer Download PDF

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Publication number
CN114636838A
CN114636838A CN202011488528.XA CN202011488528A CN114636838A CN 114636838 A CN114636838 A CN 114636838A CN 202011488528 A CN202011488528 A CN 202011488528A CN 114636838 A CN114636838 A CN 114636838A
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CN
China
Prior art keywords
pressure
pressure chamber
electronic valve
communicated
liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011488528.XA
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Chinese (zh)
Inventor
翟留伟
其他发明人请求不公开姓名
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Dymind Biotechnology Co Ltd
Original Assignee
Shenzhen Dymind Biotechnology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Dymind Biotechnology Co Ltd filed Critical Shenzhen Dymind Biotechnology Co Ltd
Priority to CN202011488528.XA priority Critical patent/CN114636838A/en
Publication of CN114636838A publication Critical patent/CN114636838A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/14—Suction devices, e.g. pumps; Ejector devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/14—Suction devices, e.g. pumps; Ejector devices
    • G01N2001/1418—Depression, aspiration
    • G01N2001/1436—Ejector
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/14—Suction devices, e.g. pumps; Ejector devices
    • G01N2001/1445—Overpressure, pressurisation at sampling point
    • G01N2001/1463—Injector; Air-lift

Abstract

The invention discloses a gas path device of a sample analyzer, which comprises a gas source mechanism, a liquid-moving mechanism and a pressure tube, wherein the gas source mechanism is used for generating positive pressure or negative pressure, the liquid-moving mechanism is communicated with the gas source mechanism and is used for absorbing or releasing gas or liquid under the action of the positive pressure or the negative pressure of the gas source mechanism, the pressure tube is communicated with the gas source mechanism and is used for providing the positive pressure or the negative pressure to external equipment under the action of the positive pressure or the negative pressure of the gas source mechanism, the liquid-moving mechanism can keep stable storage state of the liquid in the transfer process after absorbing the liquid by providing the negative pressure to the liquid-moving mechanism through the gas source mechanism, and the pressure tube provides the positive pressure or the negative pressure to the external equipment, so that the gas path device has more diversified functions and wider application range.

Description

Gas circuit device of sample analyzer
Technical Field
The invention relates to the technical field of medical equipment, in particular to a gas path device of a sample analyzer.
Background
In the medical apparatus at present, when the test product is used to diagnose the physical condition of a patient, it is common to first sample the substance to be tested, such as blood, and then suck and transfer the sample by the sucking mechanism and the liquid-transferring mechanism to react with the test product.
The inventor of the present application finds, in long-term research and development, that a sample is generally directly sucked by a sample sucking needle and the like at present, the storage state of the sample sucking needle for the sample is unstable in the transferring process, and the function of the sample sucking needle is single.
Disclosure of Invention
The invention provides a gas path device of a sample analyzer, which aims to solve the technical problems that in the prior art, the storage state of a sample sucked by a sample sucking needle and other mechanisms in the transfer process is unstable and the function is single.
In order to solve the above technical problems, one technical solution adopted by the present invention is to provide an air path device of a sample analyzer, including:
the air source mechanism is used for generating positive pressure or negative pressure;
the liquid transfer mechanism is communicated with the air source mechanism and is used for sucking or releasing gas or liquid under the action of the positive pressure or the negative pressure of the air source mechanism;
and the pressure pipe is communicated with the air source mechanism and is used for providing positive pressure or negative pressure for external equipment under the action of the positive pressure or negative pressure of the air source mechanism.
In a specific embodiment, the air source mechanism comprises a first syringe and a second syringe, the first syringe is communicated with the pipetting mechanism and used for providing positive pressure or negative pressure for the pipetting mechanism, and the second syringe is communicated with the pressure tube and used for providing positive pressure or negative pressure for the pressure tube.
In a specific embodiment, the air passage device further includes a driver and a substrate, the first injector includes a first injection tube and a first piston, the first injection tube forms a first accommodating cavity, the first piston is disposed in the first accommodating cavity and connected to the substrate, the second injector includes a second injection tube and a second piston, the second injection tube forms a second accommodating cavity, the second piston is disposed in the second accommodating cavity and connected to the substrate, and the driver is configured to drive the substrate to move along an axial direction of the first injection tube.
In a specific embodiment, the air passage device further includes a first electronic valve formed with a first inlet port communicating with the second injector, a first outlet port communicating with the first injector, and a second outlet port communicating with the pressure tube.
In a specific embodiment, the air path device further includes a pressure chamber mechanism, a second electronic valve and a third electronic valve, the pressure chamber mechanism is respectively communicated with the air source mechanism and the pressure pipe, the second electronic valve is disposed between the pressure chamber mechanism and the air source mechanism, the third electronic valve is disposed between the pressure chamber mechanism and the pressure pipe, and the pressure chamber mechanism is configured to store the positive pressure or the negative pressure generated by the air source mechanism.
In a specific embodiment, the pressure chamber mechanism comprises at least two pressure chambers, the at least two pressure chambers comprise a first pressure chamber and a second pressure chamber, the first pressure chamber is respectively communicated with the gas source mechanism and the pressure pipe, and the second pressure chamber is communicated with the first pressure chamber.
In a specific embodiment, the pressure chamber mechanism further comprises a pressure chamber pressurizer, the pressure chamber pressurizer being in communication with the first pressure chamber or the second pressure chamber.
In a specific embodiment, the second electronic valve is a three-way valve, the second electronic valve is formed with a second inlet, a third outlet and a fourth outlet, the second inlet is communicated with the air source mechanism, the third outlet is communicated with the pressure chamber mechanism, the fourth outlet is communicated with the outside air or the external device, and the third electronic valve is a one-way valve.
In a specific embodiment, the air passage device further comprises an air filter, and the air filter is communicated with the fourth outlet.
In a specific embodiment, the liquid transfer mechanism includes a liquid storage box for storing the liquid sucked, and the air passage device further includes a fourth electronic valve disposed between the liquid storage box and the first syringe.
The air path device of the sample analyzer comprises an air source mechanism, a liquid transfer mechanism and a pressure tube, wherein the air source mechanism is used for generating positive pressure or negative pressure, the liquid transfer mechanism is communicated with the air source mechanism and is used for sucking or releasing gas or liquid under the action of the positive pressure or negative pressure of the air source mechanism, the pressure tube is communicated with the air source mechanism and is used for providing positive pressure or negative pressure to external equipment under the action of the positive pressure or negative pressure of the air source mechanism, the negative pressure is provided for the liquid transfer mechanism through the air source mechanism, the storage state of the liquid in the transfer process after the liquid is sucked by the liquid transfer mechanism can be kept stable, the positive pressure or negative pressure is provided for the external equipment through the pressure tube, the functions of the air path device can be diversified, and the application range is wider.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
fig. 1 is a schematic structural diagram of a gas path device of a sample analyzer according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The terms "first" and "second" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. While the term "and/or" is merely one type of association that describes an associated object, it means that there may be three types of relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
Referring to fig. 1, an embodiment of the gas circuit apparatus 10 of the sample analyzer of the present invention includes a gas source mechanism 100, a liquid transfer mechanism 200, and a pressure tube 300, wherein the gas source mechanism 100 is configured to generate a positive pressure or a negative pressure, the liquid transfer mechanism 200 is in communication with the gas source mechanism 100 and is configured to suck or release a gas or a liquid under the action of the positive pressure or the negative pressure of the gas source mechanism 100, the pressure tube 300 is in communication with the gas source mechanism 100 and is configured to provide the positive pressure or the negative pressure to an external device (not shown in the figure) under the action of the positive pressure or the negative pressure of the gas source mechanism 100, the liquid transfer mechanism 200 can keep a stable storage state of the liquid during a transfer process after sucking the liquid, and the pressure tube 300 provides the positive pressure or the negative pressure to the external device, so that the function of the gas circuit apparatus 10 can be more diversified and the application range is wider.
In this embodiment, the air source mechanism 100 may include a first syringe 110 and a second syringe 120, the first syringe 110 is communicated with the pipetting mechanism 200 and is used for providing positive pressure or negative pressure to the pipetting mechanism 200, the second syringe 120 is communicated with the pressure tube 300 and is used for providing positive pressure or negative pressure to the pressure tube 300, and the positive pressure or negative pressure provided to the pipetting mechanism 200 and the pressure tube 300 can be separately controlled, so as to improve the liquid suction precision of the pipetting mechanism 200 and improve the flexibility of the air circuit device 10.
In this embodiment, the capacity of the first syringe 110 may be 80ul to 120ul, and the capacity of the second syringe 120 may be 8ml to 12ml, and since the capacity of the first syringe 110 is smaller, the accuracy of each drawing or discharge is higher, and the accuracy of drawing the liquid by the pipetting mechanism 200 can be further improved.
In other embodiments, the capacities of the first syringe 110 and the second syringe 120 can be adjusted according to actual needs, and are not limited herein.
In other embodiments, the air supply mechanism 100 may also include at least one of a syringe, an air pump, an air cylinder, and a plunger pump.
In this embodiment, the air path device 10 further includes a driver 130 and a substrate 140, the first injector 110 includes a first injection tube 111 and a first piston 112, the first injection tube 111 is formed with a first accommodating cavity, the first piston 112 is disposed in the first accommodating cavity and connected to the substrate 140, the second injector 120 includes a second injection tube 121 and a second piston 122, the second injection tube 121 is formed with a second accommodating cavity, the second piston 122 is disposed in the second accommodating cavity and connected to the substrate 140, and the driver 130 is configured to drive the substrate 140 to move along the axial direction of the first injection tube 111 for performing suction or release. By connecting the first piston 112 and the second piston 122 to one substrate 140, the first piston 112 and the second piston 122 can be driven by only one driver 130, so that the air path device 10 has a simpler structure, occupies a smaller space, and saves cost.
In other embodiments, aspiration or release may also be achieved by driving first syringe 111 and second syringe 121, without limitation.
In other embodiments, the first injector 110 and the second injector 120 may be driven by two drivers, so that the control is more flexible, which is not limited herein.
In this embodiment, the air path device 10 further includes a first electronic valve 150, the first electronic valve 150 is formed with a first inlet I1, a first outlet O11 and a second outlet O12, the first inlet I1 is communicated with the second injector 120, the first outlet O11 is communicated with the first injector 110, and the second outlet O12 is communicated with the pressure tube 300, so that the first injector 110 can also provide positive pressure or negative pressure to the liquid-moving mechanism 200, so that the liquid-moving mechanism 200 can suck or release a larger amount of gas or liquid, and the application range of the air path device 10 is wider.
In this embodiment, the air channel apparatus 10 further includes a controller (not shown in the figure), the controller is configured to control the first outlet O11 of the first electronic valve 150 to remain closed, control the liquid-transferring mechanism 200 to move to the position above the sample container when the amount of the liquid to be obtained is smaller than or equal to the accommodation of the first syringe 110, control the driver 130 to drive the substrate 140 to move downward along the axial direction of the first syringe 111 to suck the liquid in the sample container, control the liquid-transferring mechanism 200 to move to the position above the target well after the sucking is completed, and control the driver 130 to drive the substrate 140 to move upward along the axial direction of the first syringe 111 to release the liquid into the target well.
The controller is further configured to control the first outlet O11 of the first electronic valve 150 to open when the amount of the liquid to be obtained is larger than the amount accommodated in the first syringe 110, control the pipetting mechanism 200 to move to the upper side of the sample container, control the driver 130 to drive the substrate 140 to move downward along the axial direction of the first syringe 111 to aspirate the liquid in the sample container, control the first outlet O11 to close after aspiration is completed until the pipetting mechanism 200 moves to the upper side of the target well, so that the storage state of the liquid during the movement of the pipetting mechanism 200 can be more stable, control the first outlet O11 to open, and control the driver 130 to drive the substrate 140 to move upward along the axial direction of the first syringe 111 to release the liquid into the target well, and so on repeatedly until the amount of the obtained liquid reaches the target amount.
In this embodiment, the controller can also control the driver 130 to drive the substrate 140 to move downward along the axial direction of the first syringe 111 before the liquid is obtained, so as to suck the outside air through the pipetting mechanism 200, thereby eliminating the return error, reducing the error and further improving the accuracy of obtaining the volume of the liquid.
In this embodiment, the pipetting mechanism 200 includes a liquid storage box 210 and a fourth electronic valve 220, the liquid storage box 210 is used for storing the liquid to be sucked, so as to facilitate transportation and transfer, and the fourth electronic valve 220 is disposed between the liquid storage box 210 and the first syringe 110, and can be used for controlling the connection and disconnection between the liquid storage box 210 and the first syringe 110, so as to enable the storage state of the liquid storage box 210 to be more stable.
In this embodiment, the air path device 10 further includes a pressure chamber mechanism 400, a second electronic valve 410, and a third electronic valve 420, the pressure chamber mechanism 400 is respectively communicated with the air source mechanism 100 and the pressure tube 300, the second electronic valve 410 is disposed between the pressure chamber mechanism 400 and the air source mechanism 100, the third electronic valve 420 is disposed between the pressure chamber mechanism 400 and the pressure tube 300, and the pressure chamber mechanism 400 is configured to store the positive pressure or the negative pressure generated by the air source mechanism 100, so that when the positive pressure or the negative pressure needs to be provided to an external device, a sufficient positive pressure or a sufficient negative pressure can be quickly provided, and the reliability is higher.
In this embodiment, the pressure chamber mechanism 400 includes at least two pressure chambers, the at least two pressure chambers include a first pressure chamber 430 and a second pressure chamber 440, the first pressure chamber 430 is respectively communicated with the air source mechanism 100 and the pressure pipe 300, the second pressure chamber 440 is communicated with the first pressure chamber 430, compared with the case that only one pressure chamber with a large capacity is used to provide positive pressure or negative pressure to the external device, the pressure value in the pressure chamber can only be stabilized at a certain value, in this embodiment, by providing two communicated pressure chambers, the pressure values in the two pressure chambers can be controlled within a certain range when positive pressure or negative pressure is provided to the external device, and the application range is wider.
In the present embodiment, the pressure chamber mechanism 400 further includes a pressure chamber stabilizer 450, and the pressure chamber stabilizer 450 is communicated with the first pressure chamber 430 or the second pressure chamber 440, and is used for maintaining the pressure in the first pressure chamber 430 and the second pressure chamber 440 within a tolerable range.
In this embodiment, the pressure chamber regulator 450 may be a pressure sensor, configured to detect a pressure value in the first pressure chamber 430 or the second pressure chamber 440, monitor the pressure value in the first pressure chamber 430 or the second pressure chamber 440, perform corresponding operations to protect the first pressure chamber 430 or the second pressure chamber 440 when the pressure value in the first pressure chamber 430 or the second pressure chamber 440 is too high or too low, and obtain the operating condition of the gas circuit device 10 by detecting the pressure value, so as to perform corresponding control operations according to different situations.
In other embodiments, the pressure chamber regulator 450 may also be other forms of pressure regulating mechanisms such as a pressure valve, and is not limited herein.
In this embodiment, the second electronic valve 410 is a three-way valve, the second electronic valve 410 is formed with a second inlet I2, a third outlet O21 and a fourth outlet O22, the second inlet I2 is communicated with the air source mechanism 100, the third outlet O21 is communicated with the pressure chamber mechanism 400, and the fourth outlet O22 is communicated with the outside air or the external device.
In this embodiment, the air path device 10 may further include an air filter 500, and the air filter 500 is communicated with the fourth outlet O22 for filtering and purifying the air flowing through the second electronic valve 410.
In this embodiment, the third electronic valve 420 is a check valve for controlling the unidirectional movement of air from the pressure tube 300 to the pressure chamber mechanism 400, and can prevent the external air communicated with the external device from flowing backward to the pressure chamber mechanism 400.
In this embodiment, the controller may be further configured to control the second outlet O12 of the first electronic valve 150 to open, the second inlet I2 and the third outlet O21 of the second electronic valve 410 to open, the second driver 130 to drive the substrate 140 to move down along the axial direction of the first injection tube 111 to form a negative pressure in the first pressure chamber 430 and the second pressure chamber 440, after the second injector 120 reaches the maximum range, the second inlet I2 of the second electronic valve 410 to close, the driver 130 to drive the substrate 140 to move up along the axial direction of the first injection tube 111 to reset the second injector 120, and then the second inlet I2 and the third outlet O21 of the second electronic valve 410 to open again, the driver 130 to drive the substrate 140 to move down along the axial direction of the first injection tube 111 to increase the negative pressure in the first pressure chamber 430 and the second pressure chamber 440, this is repeated until the negative pressure in the first pressure chamber 430 and the second pressure chamber 440 reaches the target value, and the second electronic valve 410 is controlled to close, thereby completing the negative pressure storage of the pressure chamber mechanism 400.
When negative pressure needs to be provided to the external device, the pressure pipe is communicated with the external device, and the controller controls the third electronic valve 420 to be opened to provide the negative pressure to the external device.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. The utility model provides a gas circuit device of sample analysis appearance which characterized in that includes:
the air source mechanism is used for generating positive pressure or negative pressure;
the liquid transfer mechanism is communicated with the air source mechanism and is used for sucking or releasing gas or liquid under the action of the positive pressure or the negative pressure of the air source mechanism;
and the pressure pipe is communicated with the air source mechanism and is used for providing positive pressure or negative pressure for external equipment under the action of the positive pressure or negative pressure of the air source mechanism.
2. The pneumatic circuit apparatus as claimed in claim 1, wherein the air supply mechanism comprises a first syringe and a second syringe, the first syringe is in communication with the pipetting mechanism for providing positive or negative pressure to the pipetting mechanism, and the second syringe is in communication with the pressure tube for providing positive or negative pressure to the pressure tube.
3. The air circuit device according to claim 2, further comprising a driver and a substrate, wherein the first injector comprises a first injection tube and a first piston, the first injection tube is formed with a first accommodating cavity, the first piston is disposed in the first accommodating cavity and connected to the substrate, the second injector comprises a second injection tube formed with a second accommodating cavity, and a second piston disposed in the second accommodating cavity and connected to the substrate, and the driver is configured to drive the substrate to move along an axial direction of the first injection tube.
4. The pneumatic circuit device as claimed in claim 2, further comprising a first electronic valve formed with a first inlet port communicating with the second injector, a first outlet port communicating with the first injector, and a second outlet port communicating with the pressure tube.
5. The pneumatic circuit device as claimed in claim 1, further comprising a pressure chamber mechanism, a second electronic valve and a third electronic valve, wherein the pressure chamber mechanism is respectively communicated with the air source mechanism and the pressure pipe, the second electronic valve is arranged between the pressure chamber mechanism and the air source mechanism, the third electronic valve is arranged between the pressure chamber mechanism and the pressure pipe, and the pressure chamber mechanism is used for storing the positive pressure or the negative pressure generated by the air source mechanism.
6. The pneumatic device of claim 5, wherein the pressure chamber mechanism comprises at least two pressure chambers, the at least two pressure chambers comprising a first pressure chamber and a second pressure chamber, the first pressure chamber being in communication with the gas source mechanism and the pressure tube, respectively, and the second pressure chamber being in communication with the first pressure chamber.
7. The gas circuit device according to claim 6, wherein the pressure chamber mechanism further comprises a pressure chamber regulator, the pressure chamber regulator being in communication with the first pressure chamber or the second pressure chamber.
8. The air path device according to claim 5, wherein the second electronic valve is a three-way valve, the second electronic valve is formed with a second inlet, a third outlet and a fourth outlet, the second inlet is communicated with the air source mechanism, the third outlet is communicated with the pressure chamber mechanism, the fourth outlet is communicated with the outside air or an external device, and the third electronic valve is a one-way valve.
9. The air circuit device according to claim 8, further comprising an air filter in communication with the fourth outlet.
10. The pneumatic device as claimed in claim 2, wherein the pipetting mechanism comprises a reservoir for storing the aspirated liquid, the pneumatic device further comprising a fourth electronic valve disposed between the reservoir and the first syringe.
CN202011488528.XA 2020-12-16 2020-12-16 Gas circuit device of sample analyzer Pending CN114636838A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011488528.XA CN114636838A (en) 2020-12-16 2020-12-16 Gas circuit device of sample analyzer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011488528.XA CN114636838A (en) 2020-12-16 2020-12-16 Gas circuit device of sample analyzer

Publications (1)

Publication Number Publication Date
CN114636838A true CN114636838A (en) 2022-06-17

Family

ID=81944775

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011488528.XA Pending CN114636838A (en) 2020-12-16 2020-12-16 Gas circuit device of sample analyzer

Country Status (1)

Country Link
CN (1) CN114636838A (en)

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