CN213189758U - Categorised collection mechanism of expired gas collection system - Google Patents
Categorised collection mechanism of expired gas collection system Download PDFInfo
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- CN213189758U CN213189758U CN202021256736.2U CN202021256736U CN213189758U CN 213189758 U CN213189758 U CN 213189758U CN 202021256736 U CN202021256736 U CN 202021256736U CN 213189758 U CN213189758 U CN 213189758U
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Abstract
The utility model provides a categorised collection mechanism of expiratory air collection system. The method comprises the following steps: the breathing gas detection device comprises a gas pipeline, a gas circuit conversion mechanism and a gas detection mechanism, wherein the gas pipeline comprises a breathing gas inlet section, a breathing gas detection section, a breathing gas output section and a waste gas discharge section which are communicated, the gas detection mechanism comprises a sensor arranged on the breathing gas detection section, the gas circuit conversion mechanism is used for changing the unobstructed/blocked state of a breathing gas passage and comprises a first electromagnetic valve arranged between the breathing gas detection section and the breathing gas output section and a second electromagnetic valve arranged between the breathing gas detection section and the waste gas discharge section, each electromagnetic valve and the sensor are connected with a main processor, the sensor is used for detecting the state parameters of breathing gas and transmitting the acquired data to the main processor, the main processor can control the on-off of the first electromagnetic valve and the second electromagnetic valve based on the state parameters of the breathing gas, and the breathing gas output section is used for externally connecting a gas acquisition container, the collection of the exhaled breath is completed.
Description
Technical Field
The utility model relates to an exhalation gas detects technical field, especially relates to an expiratory air collection system's categorised collection mechanism.
Background
From the perspective of human breathing, a person inhales oxygen and exhales carbon dioxide, but none is pure gas. The actual inhaled air, depending on the individual situation, contains water vapour and carbon dioxide, and most people also include nitrogen, oxygen, inert gases and other components. The human body respiratory gas is used as a reflecting way of the health condition of the human body, can reflect some important pathological symptoms, so the exhaled breath of the human body can be used for various medical diagnosis technologies including exhaled breath analysis.
The exhaled air is mainly composed of two parts, one part is "dead space air" from the upper respiratory tract, which is not exchanged with blood, and the other part is air from the deep part of the alveoli, which is exchanged with blood, and is called "alveolar air", which is about 150 ml. The main object of respiratory gas research is alveolar gas, and dead space gas can dilute the concentration of disease markers in the alveolar gas and also influence the effectiveness of respiratory gas analysis.
The devices for collecting exhaled breath in the prior art have certain defects, for example, a pulmonary alveolus exhaled breath collecting device with the publication number of CN 207779768U can blow air into an air bag, and a large sample experiment is completed through multiple blowing results, so that dead space air and pulmonary alveolus air cannot be effectively distinguished, and the actual application effect is poor.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned technical problems, a classified collection mechanism of an exhaled breath collection device is provided. The utility model discloses a technical means as follows:
a classified collection mechanism of an exhaled breath collection device comprises a gas pipeline, a gas circuit transformation mechanism and a gas detection mechanism, wherein the gas pipeline comprises a respiratory gas inlet section, a respiratory gas detection section, a respiratory gas output section and a waste gas discharge section which are communicated, the gas detection mechanism comprises a sensor arranged on the respiratory gas detection section, the gas circuit transformation mechanism is used for changing the unobstructed/blocked state of an exhaled gas passage and comprises a first electromagnetic valve arranged between the respiratory gas detection section and the respiratory gas output section and a second electromagnetic valve arranged between the respiratory gas detection section and the waste gas discharge section, each electromagnetic valve and the sensor are connected with a main processor, the sensor is used for detecting the state parameters of exhaled gas and transmitting the collected data to the main processor, and the main processor can control the on-off of the first electromagnetic valve and the second electromagnetic valve based on the state parameters of the exhaled gas, the respiratory gas output section is used for being externally connected with a gas collection container to complete collection of exhaled gas.
Further, the sensor is a flow sensor.
Furthermore, the first electromagnetic valve and the second electromagnetic valve are both two-position two-way electromagnetic valves, a four-way adapter is arranged between the two-position two-way electromagnetic valves, and the four-way adapter is respectively connected with the expiration input end of the first electromagnetic valve, the expiration input end of the second electromagnetic valve, the input end of the flow sensor and the expiration inlet.
The utility model discloses a cooperation of sensor, host processor and solenoid valve, when the sensor detects gas and belongs to predetermined "dead space gas" classification, will exhale and transmit to the exhaust gas discharge section, when the sensor detects gas and belongs to predetermined "alveolus gas" classification, automatic switch-over to respiratory gas output section to effectively gather the alveolus gas of testee.
Based on the above reason the utility model discloses can extensively promote in expired gas detection technical field.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic view of the structure of the present invention.
Fig. 2 is the external structure schematic diagram of the utility model applied to the exhaled air collecting device.
Fig. 3 is an internal structure diagram of the device for collecting exhaled breath according to the present invention.
Fig. 4 is a circuit diagram of the control system of the present invention.
In the figure: 1. a respiratory gas intake section; 2. a respiratory gas detection section; 3. a respiratory gas output section; 4. an exhaust gas discharge section; 001. a micro air pump; 002. a filter; 003. a one-way valve; 004. connecting an air pipe; 005. a cannula conducting joint; 006. a tee joint is connected with the joint; 007. a flow sensor; 008. a second solenoid valve; 009. a four-way adapter; 010. a first solenoid valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, a classified collection mechanism of an exhaled breath collection device comprises a gas pipeline, a gas circuit transformation mechanism and a gas detection mechanism, wherein the gas pipeline comprises a respiratory gas inlet section 1, a respiratory gas detection section 2, a respiratory gas output section 3 and a waste gas discharge section 4 which are communicated, the gas detection mechanism comprises a sensor arranged on the respiratory gas detection section, the gas circuit transformation mechanism is used for changing the unobstructed/blocked state of an exhaled gas passage and comprises a first electromagnetic valve 010 arranged between the respiratory gas detection section and the respiratory gas output section 3 and a second electromagnetic valve 008 arranged between the respiratory gas detection section and the waste gas discharge section, each electromagnetic valve and the sensor are connected with a main processor, the sensor is used for detecting the state parameters of exhaled gas and transmitting the collected data to the main processor, the main processor can control the on-off of the first electromagnetic valve and the second electromagnetic valve based on the state parameters of the exhaled gas, the respiratory gas output section is used for being externally connected with a gas collection container to complete collection of exhaled gas.
In this embodiment, the sensor applied in the respiratory gas detection section is a flow sensor 007, and in this embodiment, a gas pressure sensor MPXV7002DP may be selected.
In this embodiment, the first solenoid valve and the second solenoid valve are two-position two-way solenoid valves, and a four-way adapter 009 is provided therebetween, and the four-way adapter connects the expiration input of the first solenoid valve, the expiration input of the second solenoid valve, the input of the flow sensor, and the expiration inlet respectively, the respiratory gas inlet section can be connected with the mouthpiece, and the respiratory gas outlet section 3 can be a plug-in/plug-out stop valve (quick coupling/quick stop valve).
As shown in fig. 4, in the present embodiment, through cooperation of the sensor, the main processor and the solenoid valve, when the sensor detects that the gas belongs to the preset "dead space gas" category, the expired gas is transmitted to the exhaust gas discharge segment, and when the sensor detects that the gas belongs to the preset "alveolar gas" category, the expired gas is automatically switched to the respiratory gas output segment, so as to effectively collect the alveolar gas of the subject.
As shown in fig. 2 and 3, the exhaust gas discharging section is packaged in the shell, after the exhaust gas discharging section is packaged, the pipeline and the valve body are sealed, at the moment, the exhaust gas discharging section can extend out of the shell through the extension pipe or is directly discharged into the shell, and the exhaust gas is discharged out of the shell through a gas leakage point of the shell. In order to prevent the confusion of the next subject's expiration and to rapidly purge the airway, a back-blowing mechanism may be further included as a preferred embodiment, wherein the back-blowing mechanism includes a miniature air pump 001, such as a 12V brushless motor air pump, with a flow rate in the range of 1000mL/min to 2000 mL/min. The gas vent of miniature air pump with gaseous blowback section links to each other, still installs the filter 002 that is used for air-purifying between them, the expiration output of first solenoid valve is equipped with three way connection 006, three way connection respectively with be used for with the intubate on-state connection 005 that connects the gas bag to link to each other, the export of filter links to each other with the export of filter, still be equipped with check valve 003 between the export of filter and the three way connection, when preventing the non-blowback state, the gaseous blowback section of breathing gas entering, the filter links to each other through the entry end of connecting trachea 004 and check valve. The filter is a detachable filter, the main shell is also provided with an opening for observing the use condition of the detachable filter, and the filter is replaced after the internal structure of the filter is observed to reach or the service life of the filter is about to reach. The filter can be ZFC54 or ZFC53 of SMC company, and the filter needs to be replaced when the device is continuously used for 1 month.
The utility model discloses specifically use including following step: step 1, before the device is used, the device is reset, namely the first electromagnetic valve rotates to a closed position, the second electromagnetic valve rotates to an open position, the air path is unobstructed and sequentially comprises a respiratory air inlet section, a respiratory air detection section and a waste gas discharge section, and other electrical components are in a standby state. And 2, turning on the sensor before the subject prepares to exhale. Step 3, the testee breathes out of the device after installing the mouthpiece, detects that the exhaled air is dead space air or alveolar air under the detection of the flow sensor, and if the exhaled air is dead space air, the exhaled air is discharged from the waste gas discharge section; if the respiratory gas is alveolar gas, the main processor controls the first electromagnetic valve to rotate to an open position, the second electromagnetic valve rotates to a closed position, and the gas path is unobstructed and sequentially comprises a respiratory gas inlet section, a respiratory gas detection section and a respiratory gas output section for gas collection. And 4, after the preset standard is reached, rotating the first electromagnetic valve to a closed position, removing the air bag by the collector, and finishing the gas collection of the subject.
And 3, in the collection process, integrating time and flow velocity by using a flow sensor, and collecting the flow. Setting the flow volume of the evacuated gas to be 500mL-1000mL, namely, exhausting dead space gas in the exhaled air.
And 4, judging the flow by using a flow sensor. Determined according to the air bag accommodation volume. Typically, a 2L air bag volume is selected and a 1L sample air bag fill volume. When the gas volume exceeds 1L, the control valve body switches the state.
In other optional embodiments, step 5 is further included, before the next subject exhales, the micro air pump is turned on, the first electromagnetic valve is still in the open position, the second electromagnetic valve rotates to the closed position or the open position, and if the second electromagnetic valve is in the open position, a part of the blowback gas is exhausted through the exhaust gas exhaust section.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (3)
1. The utility model provides an expiratory gas collection system's categorised collection mechanism which characterized in that includes: the breathing gas detection device comprises a gas pipeline, a gas circuit conversion mechanism and a gas detection mechanism, wherein the gas pipeline comprises a breathing gas inlet section, a breathing gas detection section, a breathing gas output section and a waste gas discharge section which are communicated, the gas detection mechanism comprises a sensor arranged on the breathing gas detection section, the gas circuit conversion mechanism is used for changing the unobstructed/blocked state of a breathing gas passage and comprises a first electromagnetic valve arranged between the breathing gas detection section and the breathing gas output section and a second electromagnetic valve arranged between the breathing gas detection section and the waste gas discharge section, each electromagnetic valve and the sensor are connected with a main processor, the sensor is used for detecting the state parameters of breathing gas and transmitting the acquired data to the main processor, the main processor can control the on-off of the first electromagnetic valve and the second electromagnetic valve based on the state parameters of the breathing gas, and the breathing gas output section is used for externally connecting a gas acquisition container, the collection of the exhaled breath is completed.
2. The mechanism for classifying and collecting an exhaled breath collecting device according to claim 1, wherein said sensor is a flow sensor.
3. The mechanism of claim 1, wherein the first solenoid valve and the second solenoid valve are two-position two-way solenoid valves, and a four-way adapter is disposed therebetween and is connected to the breath input of the first solenoid valve, the breath input of the second solenoid valve, the input of the flow sensor, and the breath inlet, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021256736.2U CN213189758U (en) | 2020-07-01 | 2020-07-01 | Categorised collection mechanism of expired gas collection system |
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| CN202021256736.2U CN213189758U (en) | 2020-07-01 | 2020-07-01 | Categorised collection mechanism of expired gas collection system |
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Cited By (1)
| 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 |
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Cited By (1)
| 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 |
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