CN113777243A - Alveolar gas concentration detection device and method - Google Patents

Alveolar gas concentration detection device and method Download PDF

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Publication number
CN113777243A
CN113777243A CN202111138169.XA CN202111138169A CN113777243A CN 113777243 A CN113777243 A CN 113777243A CN 202111138169 A CN202111138169 A CN 202111138169A CN 113777243 A CN113777243 A CN 113777243A
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solenoid valve
valve
gas
electromagnetic valve
expiration
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张权锋
罗景庭
杨雷
罗邦雄
黄锦波
黄秀松
杨丽华
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Huiyuen Technology Shenzhen Co ltd
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    • 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
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
    • G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
    • G01N33/004—CO or CO2
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
    • 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
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
    • A61B2010/0083—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements for taking gas samples
    • A61B2010/0087—Breath samples

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
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  • Food Science & Technology (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
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  • General Physics & Mathematics (AREA)
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  • Combustion & Propulsion (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biomedical Technology (AREA)
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  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

The application discloses alveolar gas concentration detection device and method, wherein, this alveolar gas concentration detection device gathers module, first solenoid valve, second solenoid valve, air pump, first gas sensor, second gas sensor, third solenoid valve and exhales the storage module including exhaling. The first electromagnetic valve is respectively communicated with the breath collecting module, the second electromagnetic valve and air; the second electromagnetic valve is respectively communicated with the first electromagnetic valve, the third electromagnetic valve and the expiration storage module; the third electromagnetic valve is respectively communicated with the second electromagnetic valve, the second gas sensor and the expiration storage module; the first gas sensor and the air pump are arranged between the second electromagnetic valve and the third electromagnetic valve. The difficulty of gas collection can be reduced by the alveolar gas concentration detection device.

Description

Alveolar gas concentration detection device and method
Technical Field
The application relates to the technical field of breath collection, in particular to a device and a method for detecting alveolar gas concentration.
Background
The way of diagnosing diseases through breath analysis is more and more emphasized by people, and in the breath analysis of human bodies, it is more meaningful to collect gas at the tail end of breath. The gas at the front end of expiration is mixed with airway gas, the measurement is inaccurate, the gas at the end of expiration is basically alveolar gas, and the measurement result can relatively reflect the health state of the body.
However, the collection of the end-expiratory gas is difficult, and when the patient exhales normally, the valve needs to be switched by human judgment to control the collection of the end-expiratory gas, so that the collection of the gas is difficult.
Disclosure of Invention
The embodiment of the application provides a device and a method for detecting the concentration of alveolar gas, which can reduce the difficulty of gas collection.
In a first aspect, an embodiment of the present application provides an alveolar gas concentration detection device, including exhaling and gathering module, first solenoid valve, second solenoid valve, air pump, first gas sensor, second gas sensor, third solenoid valve and exhale the storage module, first solenoid valve respectively with exhale gather the module second solenoid valve and air intercommunication, the second solenoid valve respectively with first solenoid valve the third solenoid valve with exhale the storage module intercommunication, the third solenoid valve respectively with the second solenoid valve the second gas sensor exhale the storage module intercommunication, first gas sensor with the air pump set up in the second solenoid valve with between the third solenoid valve.
In the alveolar gas concentration detection device provided by the embodiment of the present application, the first gas sensor is disposed between the gas pump and the second solenoid valve.
In the alveolar gas concentration detection device provided by the embodiment of the present application, the first gas sensor is disposed between the gas pump and the third electromagnetic valve.
In the alveolar gas concentration detection apparatus provided by the embodiment of the present application, the first gas sensor is a carbon dioxide sensor.
In the alveolar gas concentration detection apparatus provided in the embodiment of the present application, the first solenoid valve, the second solenoid valve, and the third solenoid valve each include a first valve, a second valve, and a third valve.
In the alveolar gas concentration detection device that this application embodiment provided, first solenoid valve passes through first valve and second solenoid valve intercommunication, first solenoid valve passes through the second valve with the air intercommunication, first solenoid valve passes through the third valve with the module intercommunication is gathered in expiration.
In the alveolar gas concentration detection device provided by the embodiment of the application, the second solenoid valve is communicated with the third solenoid valve through the first valve, the second solenoid valve is communicated with the first solenoid valve through the second valve, and the third solenoid valve is communicated with the expiration storage module through the third valve.
In the alveolar gas concentration detection device provided by the embodiment of the application, the third solenoid valve is communicated with the second solenoid valve through the first valve, the third solenoid valve is communicated with the breath storage module through the second valve, and the third solenoid valve is communicated with the second gas sensor through the third valve.
The embodiment of the application provides a method for detecting the concentration of alveolar gas, which comprises the following steps:
in the bottom gas measuring stage, when the bottom gas measuring stage is in the bottom gas measuring stage, the first electromagnetic valve and the second electromagnetic valve are powered off, the third electromagnetic valve is powered on, air is sucked in from the first electromagnetic valve under the action of the air pump and reaches the second gas sensor through the first gas sensor, the second electromagnetic valve and the third electromagnetic valve, and the first concentration of the first gas in the air and the second concentration of the second gas in the air are respectively obtained;
in the expiration collection stage, when the expiration collection stage is performed, the first electromagnetic valve is powered on, the second electromagnetic valve and the third electromagnetic valve are powered off, and expiration is inhaled by the first electromagnetic valve under the action of the air pump and reaches the expiration storage module through the first gas sensor, the second electromagnetic valve and the third electromagnetic valve;
and in the expiration measurement stage, when the expiration measurement stage is performed, the first electromagnetic valve and the third electromagnetic valve are powered off, the second electromagnetic valve is powered on, and under the action of the air pump, the expiration in the expiration storage module reaches the second gas sensor through the second electromagnetic valve, the first gas sensor and the third electromagnetic valve to respectively obtain a third concentration of the first gas in the expiration and a fourth concentration of the second gas in the expiration.
In the method for detecting a concentration of an alveolar gas provided by an embodiment of the present application, the first gas sensor is a carbon dioxide sensor, and the first gas is carbon dioxide.
To sum up, alveolar gas concentration detection device that this application embodiment provided is including exhaling collection module, first solenoid valve, second solenoid valve, air pump, first gas sensor, second gas sensor, third solenoid valve and exhale the storage module, first solenoid valve respectively with exhale the collection module second solenoid valve and air intercommunication, the second solenoid valve respectively with first solenoid valve the third solenoid valve with exhale the storage module intercommunication, the third solenoid valve respectively with the second solenoid valve the second gas sensor exhale the storage module intercommunication, first gas sensor with the air pump set up in the second solenoid valve with between the third solenoid valve. The difficulty of gas collection can be reduced by the alveolar gas concentration detection device.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an apparatus for detecting an alveolar gas concentration according to an embodiment of the present disclosure.
Fig. 2 is another schematic structural diagram of an alveolar gas concentration detection apparatus according to an embodiment of the present disclosure.
FIG. 3 is a flowchart illustrating a method for detecting an alveolar gas concentration according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In addition, the technical features mentioned in the different embodiments of the present application can be combined with each other as long as they do not conflict with each other.
The embodiments of the present application provide an apparatus and a method for detecting alveolar gas concentration, which will be described in detail below.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an apparatus for detecting alveolar gas concentration according to an embodiment of the present disclosure. The alveolar gas concentration detection device may include an expired air collection module 10, a first solenoid valve 20, a second solenoid valve 30, an air pump 40, a first gas sensor 50, a third solenoid valve 60, a second gas sensor 70, and an expired air storage module 80.
The first solenoid valve 20 is respectively communicated with the breath collecting module 10, the second solenoid valve 30 and the air, the second solenoid valve 30 is respectively communicated with the first solenoid valve 20, the third solenoid valve 60 and the breath storage module 80, the third solenoid valve 60 is respectively communicated with the second solenoid valve 30, the second gas sensor 70 and the breath storage module 80, and the first gas sensor 50 and the air pump 40 are arranged between the second solenoid valve 30 and the third solenoid valve 60.
It is understood that the first gas sensor 50 may be disposed between the air pump 40 and the second solenoid valve 30. The first gas sensor 50 may also be disposed between the air pump 40 and the third solenoid valve 60.
In the present embodiment, the first, second, and third solenoid valves 20, 30, and 60 each include first, second, and third valves a, b, and c. When the current is applied, the first valve a and the third valve c are turned on. When the power is cut off, the first valve a and the second valve b are conducted.
The first solenoid valve 20 is communicated with the second solenoid valve 30 through a first valve a, the first solenoid valve 20 is communicated with air through a second valve b, and the first solenoid valve 20 is communicated with the breath collection module 10 through a third valve c. The second solenoid valve 30 is communicated with the third solenoid valve 60 through a first valve a, the second solenoid valve 30 is communicated with the first solenoid valve 20 through a second valve b, and the third solenoid valve 60 is communicated with the expiration air storage module 80 through a third valve c. The third solenoid valve 60 is in communication with the second solenoid valve 30 through a first valve a, the third solenoid valve 60 is in communication with the breath storage module 80 through a second valve b, and the third solenoid valve 60 is in communication with the second gas sensor 70 through a third valve c.
The breath collecting module 10 may be a breath mask or a nasal tube.
In a specific implementation process, the using steps of the alveolar gas concentration detection device can be as follows:
in the bottom gas measurement stage, when the bottom gas measurement stage is in progress, the first electromagnetic valve 20 and the second electromagnetic valve 30 are powered off, the third electromagnetic valve 60 is powered on, and under the action of the air pump 40, air is sucked in from the first electromagnetic valve 20 and reaches the second gas sensor 70 through the first gas sensor 50, the second electromagnetic valve 30 and the third electromagnetic valve 60, so that the first concentration of the first gas in the air and the second concentration of the second gas in the air are respectively obtained;
in the expiration collection phase, when the expiration collection phase is in the expiration collection phase, the first electromagnetic valve 20 is powered on, the second electromagnetic valve 30 and the third electromagnetic valve 60 are powered off, and expiration is inhaled by the first electromagnetic valve under the action of the air pump 40 and reaches the expiration storage module 80 through the first gas sensor 50, the second electromagnetic valve 30 and the third electromagnetic valve 60;
and in the expiration measurement stage, when the expiration measurement stage is in the expiration measurement stage, the first electromagnetic valve 20 and the third electromagnetic valve 60 are powered off, the second electromagnetic valve 30 is powered on, and under the action of the air pump 40, the expiration in the expiration storage module 80 reaches the second gas sensor 70 through the second electromagnetic valve 30, the first gas sensor 50 and the third electromagnetic valve 60, so that the third concentration of the first gas in the expiration and the fourth concentration of the second gas in the expiration are obtained respectively.
It is understood that the first gas sensor 50 is a carbon dioxide sensor. The first gas is carbon dioxide.
At this time, the concentration of the second gas in alveolar gas may be obtained from the first concentration of the first gas in air, the second concentration of the second gas in air, the third concentration of the first gas in expired air, and the fourth concentration of the second gas in expired air.
For example, the concentration of carbon dioxide in the air is p0, the concentration of carbon dioxide in the alveolar gas is p1, and the concentration of carbon dioxide in the luminal gas is p, where p0< p < p1, requires the volume of alveolar gas. Let the percentage of alveolar gas in the airway per unit volume be x, and the number of carbon dioxide molecules in airway with volume V be V × p1+ V × p (1-x) × p 0. I.e., x p1+ (1-x) p0 ═ p. And resolving to obtain x ═ p-p0)/(p1-p 0.
Similarly, the ratio of alveolar gas to air can be calculated as long as the concentration of carbon dioxide in the exhaled air is calculated.
If the calculated ratio of alveolar gas in the exhaled breath is x, and the second gas concentration in the ambient air is c0, the second gas concentration in the exhaled breath is c, and the second gas concentration in the alveolar gas is required. Then, assuming that the second gas concentration in the alveolar gas is c1, x c1+ (1-x) c0 ═ c, the second gas concentration in the alveolar gas is solved: c1 ═ c-c0)/x + c 0.
The carbon dioxide concentration in the air was 0.0385%, that is, 385 ppm. The carbon dioxide content in the human breath was 3.68%, i.e. 36800 ppm.
Fig. 3 is a schematic flow chart of a method for detecting an alveolar gas concentration according to an embodiment of the present disclosure, as shown in fig. 3. The specific flow of the method for detecting the concentration of the alveolar gas can be as follows:
301. and a bottom gas measuring stage.
When the bottom gas measurement stage is in operation, the first electromagnetic valve 20 and the second electromagnetic valve 30 are powered off, the third electromagnetic valve 60 is powered on, and under the action of the air pump 40, air is sucked in from the first electromagnetic valve 20 and reaches the second gas sensor 70 through the first gas sensor 50, the second electromagnetic valve 30 and the third electromagnetic valve 60, so as to respectively obtain a first concentration of the first gas in the air and a second concentration of the second gas in the air;
302. and (5) an expiration collection phase.
When in the expiration collection phase, the first solenoid valve 20 is powered on, the second solenoid valve 30 and the third solenoid valve 60 are powered off, and expiration is inhaled by the first solenoid valve under the action of the air pump 40 and reaches the expiration storage module 80 through the first gas sensor 50, the second solenoid valve 30 and the third solenoid valve 60;
303. an exhalation measurement phase.
When in the expiration measurement phase, the first solenoid valve 20 and the third solenoid valve 60 are powered off, the second solenoid valve 30 is powered on, and the expiration air in the expiration air storage module 80 reaches the second gas sensor 70 through the second solenoid valve 30, the first gas sensor 50 and the third solenoid valve 60 under the action of the air pump 40, so as to obtain a third concentration of the first gas in the expiration air and a fourth concentration of the second gas in the expiration air respectively.
It is understood that the first gas sensor 50 is a carbon dioxide sensor. The first gas is carbon dioxide.
The above operations can be specifically referred to in the above embodiments of the alveolar gas concentration detection device, and are not described herein again. It should be noted that, the terms are used as in the above-mentioned detection of alveolar gas concentration, and the details of the implementation may refer to the description in the method examples.
To sum up, alveolar gas concentration detection device that this application embodiment provided includes expiration collection module 10, first solenoid valve 20, second solenoid valve 30, air pump 40, first gas sensor 50, third solenoid valve 60, second gas sensor 70 and expiration storage module 80, first solenoid valve 20 respectively with expiration collection module 10, second solenoid valve 30 and air intercommunication, second solenoid valve 30 respectively with first solenoid valve 20, third solenoid valve 60 and expiration storage module 80 intercommunication, third solenoid valve 60 respectively with second solenoid valve 30, second gas sensor 70, expiration storage module 80 intercommunication, first gas sensor 50 and air pump 40 set up between second solenoid valve 30 and third solenoid valve 60. The difficulty of gas collection can be reduced by the alveolar gas concentration detection device.
The above detailed description is provided for the detecting device and method for detecting alveolar gas concentration according to the embodiments of the present application, and the principle and the implementation manner of the present application are explained in the present application by applying specific examples, and the description of the above embodiments is only used to help understanding the method and the core concept of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (10)

1. The utility model provides an alveolar gas concentration detection device, its characterized in that, gathers module, first solenoid valve, second solenoid valve, air pump, first gas sensor, second gas sensor, third solenoid valve and exhales the storage module including exhaling, first solenoid valve respectively with exhale gather the module second solenoid valve and air intercommunication, the second solenoid valve respectively with first solenoid valve the third solenoid valve with exhale the storage module intercommunication, the third solenoid valve respectively with the second solenoid valve the second gas sensor exhale the storage module intercommunication, first gas sensor with the air pump set up in the second solenoid valve with between the third solenoid valve.
2. The alveolar gas concentration detection apparatus according to claim 1, wherein the first gas sensor is disposed between the gas pump and the second solenoid valve.
3. The alveolar gas concentration detection apparatus according to claim 1, wherein the first gas sensor is disposed between the gas pump and the third solenoid valve.
4. The alveolar gas concentration detection apparatus according to claim 1, wherein the first gas sensor is a carbon dioxide sensor.
5. The alveolar-gas concentration detection apparatus according to claim 1, wherein the first solenoid valve, the second solenoid valve, and the third solenoid valve each comprise a first valve, a second valve, and a third valve.
6. The alveolar gas concentration detection device according to claim 5, wherein the first solenoid valve communicates with a second solenoid valve through the first valve, the first solenoid valve communicates with the air through the second valve, and the first solenoid valve communicates with the breath collection module through the third valve.
7. The alveolar gas concentration detection apparatus according to claim 5, wherein the second solenoid valve communicates with the third solenoid valve through the first valve, the second solenoid valve communicates with the first solenoid valve through the second valve, and the third solenoid valve communicates with the breath storage module through the third valve.
8. The alveolar gas concentration detection apparatus according to claim 5, wherein the third solenoid valve communicates with the second solenoid valve through the first valve, the third solenoid valve communicates with the breath storage module through the second valve, and the third solenoid valve communicates with the second gas sensor through the third valve.
9. A method for detecting the concentration of alveolar gas, comprising:
in the bottom gas measuring stage, when the bottom gas measuring stage is in the bottom gas measuring stage, the first electromagnetic valve and the second electromagnetic valve are powered off, the third electromagnetic valve is powered on, air is sucked in from the first electromagnetic valve under the action of the air pump and reaches the second gas sensor through the first gas sensor, the second electromagnetic valve and the third electromagnetic valve, and the first concentration of the first gas in the air and the second concentration of the second gas in the air are respectively obtained;
in the expiration collection stage, when the expiration collection stage is performed, the first electromagnetic valve is powered on, the second electromagnetic valve and the third electromagnetic valve are powered off, and expiration is inhaled by the first electromagnetic valve under the action of the air pump and reaches the expiration storage module through the first gas sensor, the second electromagnetic valve and the third electromagnetic valve;
and in the expiration measurement stage, when the expiration measurement stage is performed, the first electromagnetic valve and the third electromagnetic valve are powered off, the second electromagnetic valve is powered on, and under the action of the air pump, the expiration in the expiration storage module reaches the second gas sensor through the second electromagnetic valve, the first gas sensor and the third electromagnetic valve to respectively obtain a third concentration of the first gas in the expiration and a fourth concentration of the second gas in the expiration.
10. The method of detecting an alveolar-gas concentration according to claim 9, wherein the first gas sensor is a carbon dioxide sensor and the first gas is carbon dioxide.
CN202111138169.XA 2021-09-27 2021-09-27 Alveolar gas concentration detection device and method Pending CN113777243A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023046170A1 (en) * 2021-09-27 2023-03-30 惠雨恩科技(深圳)有限公司 Alveolar gas concentration measurement device
WO2023240832A1 (en) * 2022-06-14 2023-12-21 惠雨恩科技(深圳)有限公司 End-expiratory acquisition device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023046170A1 (en) * 2021-09-27 2023-03-30 惠雨恩科技(深圳)有限公司 Alveolar gas concentration measurement device
WO2023240832A1 (en) * 2022-06-14 2023-12-21 惠雨恩科技(深圳)有限公司 End-expiratory acquisition device

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