CN219183832U - Expired air collection system - Google Patents
Expired air collection system Download PDFInfo
- Publication number
- CN219183832U CN219183832U CN202222262885.5U CN202222262885U CN219183832U CN 219183832 U CN219183832 U CN 219183832U CN 202222262885 U CN202222262885 U CN 202222262885U CN 219183832 U CN219183832 U CN 219183832U
- Authority
- CN
- China
- Prior art keywords
- gas
- sampling
- air
- container
- deep
- 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.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The present disclosure relates to exhaled gas collection devices and collection methods. The expired gas collection device includes: a sensor for detecting a gas collection state; an oral gas collection container in which a gas collection state is detected by a sensor; and the deep lung gas sampling container is used for connecting and/or disconnecting the air inlet passage according to the signals of the sensor. The device can remove oral gas and upper lung to throat gas in exhaled breath to obtain ideal sample gas of alveoli.
Description
Technical Field
The present disclosure relates to the field of medical devices, and in particular, to an exhaled breath collection device.
Background
The exhaled air from the human body is mainly composed of two parts, one part is gas from the upper respiratory tract, which is not in gas exchange with blood, and the other part is gas from the deep part of alveoli, which is in gas exchange with blood. The content of volatile organic compounds in deep alveoli has a certain correlation with related diseases, and the detection of exhaled breath can be used for disease screening, and has the greatest advantage of non-invasive examination.
Disclosure of Invention
The inventor finds that the concentration of organic compounds in the exhaled gas of the human body is very low, and a gas sample which is as deep as possible in alveoli needs to be collected; meanwhile, the moisture contained in the gas exhaled by the human body influences the analysis of a subsequent gas analysis instrument, for example, a chromatographic column is very sensitive to the moisture in a sample; thus, there is a need to optimize the collection of exhaled gas and subsequent processing, which is related to the effect of subsequent sample analysis.
Based on this, the present disclosure provides an exhaled gas collection protocol that enables alveolar ideal sample gas to be obtained.
According to an aspect of the disclosed embodiments, there is provided an exhaled gas collection device comprising:
a sensor for detecting a gas collection state;
an oral gas collection container in which a gas collection state is detected by a sensor;
a lung deep gas sampling vessel;
the expiration part is used for expiration of a tested person and is connected with the oral gas collection container and the deep lung gas sampling container;
an air intake passage which is a connection portion between the exhalation part and the deep lung gas sampling container, and which has no common portion with a connection portion between the exhalation part and the oral gas collection container;
the intake passage is connected/disconnected in accordance with a signal of a sensor.
In some embodiments further comprising: and an air charging unit for supplying external air and connected to the air intake passage. After the gas collection is completed, the inflatable unit is used for inflation, and ambient air and the like can be introduced into the air inlet passage to complete cleaning of the connecting pipeline in the expired gas collection device.
In some embodiments further comprising: a dehumidifying unit for dehumidifying the gas entering the deep lung gas sampling container;
in some embodiments, the dehumidification processing unit dehumidifies the gas before it enters the deep lung gas sampling vessel.
In some embodiments, the dehumidification processing unit comprises a drying pipe and a hot air purging device, and the hot air purging device purges the drying pipe with hot air to remove water gas of the gas in the drying pipe to realize the dehumidification processing of the gas.
In some embodiments, the sensor is a pressure sensor, and when the pressure reaches a predetermined value, a signal is transmitted to communicate with the air inlet passage; the sensor may also be a flow sensor, or other sensor that can detect the state of oral gas collection.
In some embodiments, the oral gas collection container, the lung deep gas sampling container, and the sensor are connected by a star connection. The star-shaped connection mode is that the oral cavity gas collecting container, the lung deep gas sampling container and the sensor are respectively positioned in three Y-shaped directions.
In some embodiments, the oral gas collection container is an oral gas collection bag and the lung deep gas sampling container is a lung deep sampling bag.
In some embodiments further comprising: the lung deep gas sampling container is positioned in the sampling box; a gas analysis unit; the air charging unit is connected with the sampling box and is connected with the air inlet passage, so that the air charging unit is connected with the air inlet passage;
the sampling box comprises: the first interface is connected with the deep lung gas sampling container inside the sampling box and connected with the gas analysis unit outside the sampling box.
In some embodiments, the sampling box further comprises: the second interface is connected with the deep lung gas sampling container in the sampling box and connected with the air inlet passage outside the sampling box; the third interface is communicated with the inside of the sampling box and is connected with the inflation unit outside the sampling box; the fourth interface is communicated with the inside and the outside of the sampling box and can be opened or closed; the connecting part of the first interface and the gas analysis unit is a first connecting section, and the first connecting section further comprises a first outlet; the first outlet is capable of opening/closing; the connecting part between the position of the first outlet in the first connecting section and the gas analysis unit is a second connecting section, and the second connecting section can be connected/disconnected.
In some embodiments, when the device is cleaned, the inflation unit inflates, and the gas passes through the sampling box, the air inlet passage, the connecting part between the expiration part and the oral gas collecting container, the deep lung gas sampling container and the like, so that the cleaning of the pipeline of the expiration gas passing route in the expiration gas collecting device is realized.
In some embodiments, the connection/disconnection of the intake passage, and/or the opening/closing of the first outlet, and/or the connection/disconnection of the second connection section is achieved by a valve. When the device is cleaned, the valve of the second connecting section is closed, the first outlet is opened, and the inflation unit is inflated, so that the cleaning of part of the connecting section between the first interface and the gas analysis unit can be realized.
In some embodiments, further comprising: the PLC is used for controlling the valve, controlling the heating of the hot air blowing device, controlling the sampling of the deep lung gas, controlling the deep lung gas to enter the analysis unit, controlling the cleaning of the expired gas collecting device and controlling the inflation unit.
In some embodiments, the inflation unit is a pump or other device capable of providing a source of gas, and the sampling tank is a sealed sampling tank.
According to another aspect of embodiments of the present disclosure, a method of collecting exhaled gas from an exhaled gas collection device comprises the steps of:
(1) The tested object blows air to the expiration part, and when the oral cavity air collecting container is not fully collected, the air inlet passage is in a disconnected state;
(2) When the oral cavity gas collecting container is full, the sensor sends out a signal, and the sensor sends out a signal to be communicated with the air inlet passage;
(3) After the blowing is completed, the intake passage is opened.
In some embodiments, the dehumidification processing unit is configured to dehumidify the gas entering the deep lung gas sampling vessel;
in some embodiments, the dehumidification processing unit comprises a drying pipe and a hot air purging device, and the hot air purging device is used for carrying out hot air purging on the drying pipe to take away water gas of the gas in the drying pipe so as to realize the dehumidification processing of the gas;
in some embodiments, the time from the beginning to the end of the blowing is recorded, and the time is related to the measured object information data for subsequent optimization of the expired gas acquisition device and the acquisition method.
In some embodiments, after the blowing is finished, the deep lung gas sampling container or the inflating unit is taken away to inflate the sampling box, so that the collected deep lung gas enters the gas analysis unit, and the gas collection process is completed;
in some embodiments, after the gas collection process is completed, the oral gas collection container and the deep lung gas sampling container are taken out, the gas in the passage of the exhaled gas collection device is replaced through the inflating unit, the exhaled gas collection device is cleaned, and a new oral gas collection container and a new deep lung gas sampling container are filled.
The connection described in this disclosure may be direct connection or indirect connection through connection with other components and then connection with the object by other components to achieve a connection relationship.
By implementing the scheme disclosed by the utility model, the following beneficial effects can be obtained:
1. removing oral gas and upper lung to throat gas in exhaled breath to obtain ideal sample gas of alveoli;
2. the alveolar gas is subjected to drying treatment, so that the influence of humidity on a sensor or a subsequent gas analysis instrument is solved;
3. the sealed sampling box and the inflation unit are linked, so that the function of automatically feeding the gas sample in the sampling bag to subsequent gas analysis is achieved.
4. The gas charging unit has the function of drying and blowing gas in the device and cleaning a gas loop after each sampling.
5. Through the inflation unit, gas is introduced into the device after sampling is finished, and the gas passes through the gas inlet channel, the connecting part between the expiration part and the oral gas collecting container, the connecting part between the expiration part and the lung deep gas sampling container and the like, so that the cleaning of a pipeline of the expiration gas passing route in the expiration gas collecting device is realized.
6. Through setting up first export for the junction between sampling box and the gas analysis unit can obtain wasing, has improved the cleaning performance of device.
Drawings
Fig. 1 is a schematic structural diagram illustrating some embodiments of an exhaled gas collection device of the present disclosure;
FIG. 2 is a schematic diagram illustrating the structure of some embodiments of a dehumidification processing unit of the present disclosure;
fig. 3 is a flow chart illustrating some embodiments of an acquisition method of an exhaled gas acquisition device of the present disclosure.
Detailed Description
The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments in this disclosure without inventive faculty, are intended to fall within the scope of this disclosure.
Fig. 1 illustrates a schematic structural view of some embodiments of an exhaled gas collection device of the present disclosure.
As shown in fig. 1, the apparatus includes:
a sensor for detecting a gas collection state; an oral gas collection container in which a gas collection state is detected by a sensor; a lung deep gas sampling vessel; the expiration part is used for expiration of the testee and is connected with the oral cavity gas collection container and the deep lung gas sampling container; an air inlet passage which is a connecting part of the exhalation part and the deep lung gas sampling container and has no common part with a connecting part of the exhalation part and the oral gas collecting container; the intake passage is opened/closed in accordance with a signal from the sensor.
In some embodiments, further comprising: and the PLC is used for controlling the valve, controlling the heating of the hot air blowing equipment, controlling the sampling of the deep lung gas, controlling the deep lung gas to enter the analysis unit and controlling the cleaning of the expired gas collecting device.
In some embodiments, the sensor is a pressure sensor that transmits a signal to communicate with the intake passage when the pressure reaches a predetermined value.
In some embodiments further comprising: and the dehumidification processing unit is used for carrying out dehumidification processing on the gas entering the deep lung gas sampling container.
In some embodiments, the oral gas collection container is an oral gas collection bag and the lung deep gas sampling container is a lung deep sampling bag.
In some embodiments, the dehumidification processing unit dehumidifies the gas before it enters the deep lung gas sampling vessel.
In some embodiments, the dehumidification processing unit comprises a drying pipe and a hot air purging device, and the hot air purging device purges the drying pipe with hot air to remove water gas of the gas in the drying pipe to realize the dehumidification processing of the gas.
In some embodiments, the oral gas collection container, the lung deep gas sampling container, and the sensor are connected by a star connection.
In some embodiments, further comprising: the lung deep gas sampling container is positioned in the sampling box, and the sampling box is preferably a sealed sampling box; a gas analysis unit for analyzing the gas; and the inflation unit is used for inflating the sampling box to enable the gas in the deep lung gas sampling container to enter the gas analysis unit, and the inflation unit is a pump or other equipment capable of providing a gas source, preferably a pump.
In some embodiments, the sampling box comprises: the first interface is connected with the deep lung gas sampling container inside the sampling box and connected with the gas analysis unit outside the sampling box.
The second interface is connected with the deep lung gas sampling container in the sampling box and connected with the air inlet passage outside the sampling box;
the third interface is communicated with the inside of the sampling box and is connected with the inflation unit outside the sampling box;
and the fourth interface is communicated with the inside and the outside of the sampling box and can be opened or closed.
In some embodiments, the connection/disconnection of the inlet channel and/or the opening/closing of said first outlet and/or the connection/disconnection of said second connection section, the opening/closing of the interface is achieved by means of a valve, preferably a solenoid valve. When the device is cleaned, the valve of the second connecting section is closed, the first outlet is opened, and the inflation unit is inflated, so that the cleaning of part of the connecting section between the first interface and the gas analysis unit can be realized.
In some embodiments, the deep lung gas sampling vessel uses a low volatile, low absorption fluoropolymer film sampling bag, such as an e-switch brand fluorine film sampling bag.
In some embodiments, the oral gas collection pouch is an aluminum foil composite membrane sampling pouch, optionally a valveless sampling pouch with a mouthpiece.
In some embodiments, the drying tube is a Nafion drying tube.
In some embodiments, the working principle of the device is: the exhaled gas collecting device mainly divides the gas exhaled by the tested object into two parts, wherein one part is the gas from the mouth and the upper part of the lung to the throat, and the other part is the gas to be removed; the other part is the deep lung gas, which is the sample gas to be tested, and the sample gas is dehumidified before entering the deep lung gas sampling bag; the dehumidification processing unit is used for removing the gas exhaled from the deep part of the lung and contains more water vapor, and the water vapor has larger influence on a subsequent gas analysis instrument or a gas sensor. The oral cavity gas and the gas at the upper part of the lung at the front part of expiration are firstly collected into the bag through the oral cavity gas collecting bag, after the bag is filled, a certain positive pressure is generated in the blowing channel, a threshold value is set by the sensor, after the pressure reaches the threshold value, the subsequent gas enters the deep lung gas collecting bag in the sampling box after being dehumidified, the deep lung collecting bag is provided with double valves, one valve is used as an air inlet, and the other valve is used as an air outlet. The main functions of the sampling box and the pump are to automatically sample the collected gas sample in the sampling box to a subsequent gas analysis instrument or a gas analysis unit. The sampling box is a box with good sealing, the pump pumps air towards the inside of the sampling box, positive pressure is generated by the sampling box, in order to balance pressure, gas in the sampling bag flows out from the air outlet valve, organic volatile matters are analyzed by the gas analysis device or the gas analysis instrument at the back, the physical health condition of a tested object is judged according to the concentration of characteristic gas of the organic volatile matters, the concentration of the indoor organic volatile matters is usually lower than that of the exhaled air of a healthy person, and the organic volatile matters of the person with related diseases are several times higher than that of the healthy person, so the non-invasive screening of the related diseases can be realized. The device solves the problem of sample pretreatment, and functionally comprises three parts: separating oral gas and upper gas from deep gas, dehumidifying deep gas, collecting deep gas, and sampling.
Wherein the oral gas collection bag functions as: the oral cavity gas collecting bag is used for collecting gas at the upper parts of the oral cavity and the lung cavity, and part of the gas is dead space gas which is not exchanged with blood in the upper respiratory tract, the part of the gas is not exchanged with blood, the characteristic gas component can be diluted, the concentration of the part of the characteristic gas component exhaled by a human body is very low, and if the part of the gas component is diluted, errors or inaccurate analysis can be caused to subsequent gas analysis. Therefore, it is important to analyze the sample gas to collect this gas and separate it from the analyzed gas. The oral cavity gas collecting bag only collects the gas, and the collected gas is not used for analysis.
In some embodiments, the oral gas collection pouch operates by: the object to be measured blows towards the air blowing port, the expired air enters the device, the oral cavity air collecting bag, the pressure sensor and the deep lung sampling bag are in star connection, when the expiration starts, the expiration channel electromagnetic air valve 1 is normally open, the electromagnetic air valve 2 before entering the dehumidification processing device is in a closed state, the expired air directly enters the oral cavity air collecting bag, and the sensor senses the air pressure of the air channel. The oral cavity gas collecting bag is designed to be of a certain size, for example, 100ml capacity is achieved, when the exhaled gas begins, the exhaled gas can only enter the oral cavity gas collecting bag, when the gas in the oral cavity gas collecting bag reaches 100ml, the pressure of the exhaled gas path rises, the pressure threshold value is reached, the electromagnetic gas valve 2 before the oral cavity gas collecting bag is led to the dehumidifying device is opened, and the subsequently exhaled gas enters the deep lung gas sampling bag, so that the separation of the gas from the upper lung to the deep lung is realized.
Dehumidification process design of the present disclosure: for analysis of voc gas by exhalation, a Nafion dry tube and a silica gel dry tube are preferable. The Nafion drying tube can absorb 13 water molecules by utilizing each sulfonic acid group, has selectivity to water vapor, has the excellent characteristics of low corrosion resistance, low adsorption and low volatilization of polytetrafluoroethylene, is suitable for drying of volatile organic compound water vapor, has a good dehumidification effect, has small influence on a detected gas sample, does not need maintenance of a common drying tube, needs to be additionally connected with dry purge gas to take away the water vapor on the surface of the drying tube, and can reduce dehumidification efficiency if particulate matters are accumulated on the drying tube. The allochroic silica gel is high in dehumidification efficiency and stable in dehumidification by utilizing micropore adsorption, is mainly used for particulate matter sampling, can be adsorbed with trace gas to cause obvious loss, is especially not suitable for active gas, is low in cost, simple in method and easy to implement, but can be reduced in dehumidification efficiency along with continuous adsorption of the allochroic silica gel, and needs to be replaced or regenerated periodically. And a Nafion drying pipe is preferred, and the blowing wind forms dry hot air through the heating sleeve, so that the moisture in the expired air is taken away by blowing, the continuous dehumidification treatment can be realized, and the efficiency is high.
Fig. 2 illustrates a schematic structural diagram of some embodiments of the dehumidification process of the present disclosure.
As shown in fig. 2, when the blowing pressure of the detected object reaches a threshold value, the electromagnetic valve 2 is triggered to open, the channel of the entering dehumidifying unit is opened, the Y11 triggers to open the pump, the electromagnetic valve 6 is opened, the deep lung gas enters from the inlet of the Nafion drying tube, the pumped air blows the Nafion drying tube with hot air through the heating sleeve, the water vapor in the expired air in the Nafion drying tube is taken away by the dry hot air through the permeable membrane, and then the expired air enters the deep lung gas sampling bag from the air inlet valve. The gas entering the deep lung gas sampling bag is dehumidified gas.
Sample box design: the sampling box adopts a cuboid plastic box with better sealing performance, the plastic box is provided with an upper cover, four interfaces are arranged on the side surface of the box body, wherein two interfaces are connected with two valves of the gas sampling bag in the box, the outer parts of the two interfaces are respectively connected with an electronic air valve, one of the interfaces is an inlet from which air is blown, and the other interfaces are connected with humidity treatment; the other is the gas outlet of the gas sampling bag. The two interfaces are also arranged, wherein the outside of one box is connected with an air outlet pipeline of the pump, and the inside of the box is only led into the box and is used as a channel for pumping air; the other interface box is connected to an electronic gas valve, and the interior of the interface box is also open to the interior of the box, and the channel is only a pressure balancing channel or a channel for closing the balancing pressure. The pump connected with the sampling box is inflated to increase the air pressure in the sampling box, and the air in the air sampling bag is extruded to a subsequent air analysis instrument or an air sensor unit.
Deep lung gas sampling bag design: the deep lung gas sampling bag has certain requirements on the material, and needs a sampling bag made of a film with low volatility and low adsorption, and a film made of fluorine polymer, such as E-Switch brand fluorine film sampling bag, can be selected. The sampling bag has two gas channel ports, which may be through nozzles or may be valves with switches, preferably valves with switches, because part of the sampling bag is cleaned before being put into the device, after cleaning, the inside of the bag is desired to be vacuum, and then after being mounted to the device, 2 valves are opened.
Sampling box sampling theory of operation: as shown in fig. 1, when the tested object blows and the oral gas collecting bag is full, the electromagnetic valve 2 is triggered to be opened and the electromagnetic valve 3 is triggered to be opened, the electromagnetic valve 4 connected with the air outlet valve of the deep lung gas sampling bag is closed, then the expired air flows into the humidity processing unit, and then the expired air flows into the deep lung gas sampling bag in the sampling box, and the tested object is expired after one time, and the sampling is ended. Then the electromagnetic valve 2 is closed, the electromagnetic valve 3 is closed, and the gas collected by gas sampling is the deep lung gas. The electromagnetic gas valve 3 serves as a balanced sampling tank pressure. In the automatic sample injection process, the pump works, the electromagnetic valve 2 is closed, the electromagnetic valve 3 is closed, the electromagnetic valve 4 is opened, the electromagnetic valve 5 is opened, the pump is inflated to increase the internal pressure of the sampling box, and the gas in the gas sampling bag flows to a subsequent analysis unit through the channel of the electromagnetic valve 4. Before the next sample is collected, the air blowing channel is cleaned, the sample air bag and the oral cavity air collecting bag are taken out, the sampling box is closed, the pump works, the electromagnetic valve 1 is closed, the electromagnetic valve 3 is closed, the electromagnetic valve 4 is closed, the electromagnetic valve 5 is opened, the electromagnetic valve 6 is closed, and the pump pumps the environmental air to flush the air blowing channel.
The disclosure also provides an acquisition method of the exhaled gas acquisition device, comprising the following steps:
(1) The tested object blows air to the expiration part, and when the oral cavity air collecting container is not fully collected, the air inlet passage is in a disconnected state;
(2) When the oral cavity gas collecting container is full, the sensor sends out a signal, and the sensor sends out a signal to be communicated with the air inlet passage;
(3) After the blowing is completed, the intake passage is opened.
In some embodiments, the gas entering the deep lung gas sampling vessel is dehumidified by a dehumidification processing unit.
In some embodiments, the dehumidification processing unit comprises a drying pipe and a hot air purging device, and the hot air purging device is used for purging the drying pipe with hot air to remove water gas of the gas in the drying pipe so as to realize the dehumidification processing of the gas.
In some embodiments, the time from the beginning to the end of the blowing is recorded, and the time is related to the measured object information data for subsequent optimization of the expired gas acquisition device and the acquisition method.
In some embodiments, after the blowing is finished, the deep lung gas sampling container or the inflating unit is taken away to inflate the sampling box, so that the collected deep lung gas enters the gas analysis unit, and the gas collection process is completed.
In some embodiments, after the gas collection process is completed, the oral gas collection container and the deep lung gas sampling container are taken out, the gas in the passage of the exhaled gas collection device is replaced through the inflating unit, the exhaled gas collection device is cleaned, and a new oral gas collection container and a new deep lung gas sampling container are filled.
As shown in fig. 1 and 3, in other embodiments, the collecting method of the exhaled gas collecting device of the present disclosure includes:
heating jacket control: the system controller is a PLC touch screen body, the heating sleeve is preheated in advance when the system is started, the heating sleeve is powered by 24V direct current, the heating sleeve is controlled by Y10, a certain temperature is kept constant, the heating output Y10 is triggered through the temperature sensor, the temperature reaches the set temperature, the Y10 is closed, the heating is closed, and the temperature is lower than the set temperature output Y10, and the heating is started. Before expiration, the related information of the tested object, such as age, sex and the like, is registered through a registration interface.
And (3) breath collection, dehumidification and treatment control: when the blowing starts, the pressure of a blowing pipeline is not up to the set pressure, the electromagnetic valve 2, the electromagnetic valve 3 and the electromagnetic valve 4 are all in a closed state, when the oral gas sampling bag is full, the pressure is increased, the pressure of the blowing pipeline reaches a pressure threshold value, an output signal of a pressure sensor is used as an input of X0 of the PLC, X0 is changed from normal open to normal close, outputs Y4 and Y5 and Y11 and Y12, Y4 and Y5 correspond to the electromagnetic valve 2 and the electromagnetic valve 3, the electromagnetic valve 2 and the electromagnetic valve 3 are changed from normal close to normal open, Y11 corresponds to a pump, the pump is electrified to work, Y12 corresponds to the electromagnetic valve 6 between the outlet of the pump and the heating sleeve, and the electromagnetic valve 6 is changed from normal close to normal open, so that the air of the pump forms dry hot air to blow the Nafion drying pipe through the heating sleeve, and the hot air blowing takes away the water gas expired in the Nafion drying pipe. After expiration, the sampling end button M1 is pressed, and the electromagnetic air valve 1, the electromagnetic air valve 2, the electromagnetic air valve 3 and the electromagnetic air valve 4 are closed. The system records the time from the beginning to the end of blowing as the reference data for the subsequent optimization of the system, and the time data are entered into the related information data of the tested object together.
And (3) expiratory sample injection control: after expiration, the sample gas received in the deep gas sampling bag of the lung can be directly beaten into a sampling box, two valves on the sampling bag are closed, the sampling bag is taken out, and a subsequent analysis instrument is taken out for gas analysis; if the device is directly connected with a subsequent gas analysis instrument, a sample injection button M2 is pressed, the output Y11, Y13 and Y6 are opened corresponding to the electromagnetic air valve 4, the output Y13 corresponds to the electromagnetic air valve 5 between the pump outlet and the sampling box connection, then the pump charges the sampling box, the pressure in the box is increased, and in order to balance the pressure, the sample gas in the sampling bag flows out of the gas outlet valve and enters the subsequent gas analysis device or analysis sensor. And when the sample injection time is up, the pump stops working, Y11, Y13 and Y6 are closed, and the whole sampling and sample injection process is finished.
And (3) cleaning and controlling an exhalation pipeline: after sampling and sampling are finished, a mining sample box is opened, a used sampling bag is taken down, then the sampling box is closed, an oral cavity gas sampling bag is taken down, then a cleaning button M3 is pressed down, Y4, Y11 and Y7 are output, an electromagnetic air valve 2 is opened, Y7 corresponds to the electromagnetic air valve 1, and the electromagnetic air valve 1 is normally opened and normally closed; the pump is started, the ambient air is pumped, the pump is inflated to the sampling box, then the gas in the box flows out from the gas inlet of the deep gas sampling bag which is connected with the lung originally, flows out and empties through the Nafion drying pipe and then flows into the interface pipeline of the oral gas collecting bag, and the cleaning time is up to Y4, Y11 and Y7. Then, a new deep lung gas sampling bag is put into the sampling box, a new oral gas sampling bag is put in, and a new tested object is prepared for breath sampling and sample injection.
In some embodiments, the solenoid valve 4 is a three-way valve or a ninth solenoid valve having an outward opening between the sample tank and the solenoid valve 4 at a position near the solenoid valve 4. When the expiratory pipeline is cleaned, the electromagnetic air valve 4 is closed towards one side of the analysis unit and opened towards the outside when being a three-way valve, and the pump works to charge air so as to clean the pipeline between the sampling box and the electromagnetic air valve 4; similarly, when the ninth electromagnetic air valve exists, the electromagnetic air valve 4 is closed and the ninth electromagnetic air valve is opened during cleaning, so that the cleaning of the pipeline between the sampling box and the ninth electromagnetic air valve can be completed. The electromagnetic gas valve 4 is preferably located in close proximity to the analysis unit, enabling a reduction in the length of the line that cannot be cleaned. By making the electromagnetic air valve 4 a three-way valve or adding a ninth electromagnetic air valve, the pipeline between the sampling box and the analysis unit can be cleaned, and a better cleaning effect is brought.
The expired gas collection device of the present disclosure solves the separation of oral gas and upper lung gas from deep lung gas, drying of deep lung gas, collection of deep lung gas, and sample injection of deep lung gas samples. The oral cavity gas sampling bag is mainly used for collecting the oral cavity and the upper part of the lung, the capacity of the oral cavity gas sampling bag is moderate, and if the bag is smaller, the upper part of the lung gas and the deep part of the lung gas enter the deep part of the lung gas sampling bag together, so that the concentration of the deep part of the lung gas is influenced. If the bag is large, the deep lung gas sampling bag may collect insufficient gas. The upwind blowing temperature and the wind flow of the drying pipe are determined according to the expiratory humidity treatment effect; the gas collected by the deep gas sampling bag of the lung can be directly taken out from the sampling box, then the blowing pipeline is cleaned, a new gas sampling bag is put into the gas sampling bag for next sampling, and the mode is convenient for centralized sampling and then centralized analysis in a laboratory. Or the gas collected by the deep lung gas sampling bag is pumped to increase the pressure of the sampling box, the gas in the sampling bag is extruded to be used as the sample injection of the gas analysis instrument, and the operation is simple and convenient.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that the foregoing embodiments may be modified and equivalents substituted for elements thereof without departing from the scope and spirit of the disclosure. The scope of the present disclosure is defined by the appended claims.
Claims (6)
1. An expired gas collection device, comprising:
a sensor for detecting a gas collection state;
an oral gas collection container in which a gas collection state is detected by a sensor;
a lung deep gas sampling vessel;
the expiration part is used for expiration of a tested person and is connected with the oral gas collection container and the deep lung gas sampling container;
an air intake passage which is a connection portion between the exhalation part and the deep lung gas sampling container, and which has no common portion with a connection portion between the exhalation part and the oral gas collection container;
the intake passage is connected/disconnected in accordance with a signal of a sensor.
2. The exhaled breath collection device of claim 1, further comprising:
and an air charging unit for supplying external air and connected to the air intake passage.
3. The exhaled breath collection device of claim 1, further comprising:
a dehumidifying unit for dehumidifying the gas entering the deep lung gas sampling container;
the dehumidification processing unit dehumidifies the gas before the gas enters the deep lung gas sampling container;
the dehumidification processing unit comprises a drying pipe and hot air purging equipment, wherein the hot air purging equipment purges the drying pipe with hot air to take away the water vapor of the gas in the drying pipe so as to realize the dehumidification processing of the gas.
4. The exhaled breath collection device of claim 1, wherein the sensor is a pressure sensor or a flow sensor, and wherein the pressure sensor detects a pressure or the flow sensor detects a capacity reaching a predetermined value, and transmits a signal to communicate with the air intake passage;
the oral cavity gas collecting container, the lung deep gas sampling container and the sensor are connected in a star-shaped connection mode.
5. The exhaled breath collection device of claim 2, further comprising:
the lung deep gas sampling container is positioned in the sampling box;
a gas analysis unit;
the air charging unit is connected with the sampling box and is connected with the air inlet passage, so that the air charging unit is connected with the air inlet passage;
the sampling box comprises: the first interface is connected with the deep lung gas sampling container inside the sampling box and connected with the gas analysis unit outside the sampling box.
6. The exhaled breath collection device of claim 5, wherein,
the sampling box further includes:
the second interface is connected with the deep lung gas sampling container in the sampling box and connected with the air inlet passage outside the sampling box;
the third interface is communicated with the inside of the sampling box and is connected with the inflation unit outside the sampling box;
the fourth interface is communicated with the inside and the outside of the sampling box and can be opened or closed;
the connecting part of the first interface and the gas analysis unit is a first connecting section, and the first connecting section further comprises a first outlet; the first outlet is capable of opening/closing; the connecting part between the position of the first outlet in the first connecting section and the gas analysis unit is a second connecting section, and the second connecting section can be connected/disconnected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222262885.5U CN219183832U (en) | 2022-08-26 | 2022-08-26 | Expired air collection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222262885.5U CN219183832U (en) | 2022-08-26 | 2022-08-26 | Expired air collection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219183832U true CN219183832U (en) | 2023-06-16 |
Family
ID=86702945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222262885.5U Active CN219183832U (en) | 2022-08-26 | 2022-08-26 | Expired air collection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219183832U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117338283A (en) * | 2023-12-04 | 2024-01-05 | 广东立腾医疗科技有限公司 | End-tidal gas concentration detection method, end-tidal gas concentration detection device, end-tidal gas concentration detection apparatus, and storage medium |
-
2022
- 2022-08-26 CN CN202222262885.5U patent/CN219183832U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117338283A (en) * | 2023-12-04 | 2024-01-05 | 广东立腾医疗科技有限公司 | End-tidal gas concentration detection method, end-tidal gas concentration detection device, end-tidal gas concentration detection apparatus, and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5716194B2 (en) | Apparatus and method for analyzing gas and alveolar air components in the oral cavity | |
| CN109938736B (en) | Portable expired air collecting device and method | |
| CN219183832U (en) | Expired air collection system | |
| CN110146651A (en) | Expiratory air detection system based on gas sensor | |
| CN110123382B (en) | Human body exhaled gas off-line acquisition device and method | |
| CN114200087A (en) | Expiration tester and using method thereof | |
| CN111921296A (en) | Human body exhaled air processing system and processing method thereof | |
| CN114113283A (en) | Expired gas collection system and mass spectrometry device | |
| CN117653212A (en) | Expired gas collecting device and collecting method | |
| CN207036849U (en) | A kind of medical breath sample detection means | |
| US11957450B2 (en) | Apparatus and method for collecting a breath sample using an air circulation system | |
| CN201684528U (en) | Steam-water separator | |
| CN220690866U (en) | Expired gas multicomponent detecting instrument | |
| US11782049B2 (en) | Apparatus and method for collecting a breath sample using a container with controllable volume | |
| US20210267485A1 (en) | Apparatus and method for collecting a breath sample using a metering device along an exhaust conduit | |
| US20210267482A1 (en) | Apparatus and method for collecting a breath sample using a metering device | |
| US20210267481A1 (en) | Apparatus and method for controlling a flow of breath to a sorbent tube | |
| JP2023516023A (en) | Breath sampling device and method using controllable volume container |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |