CN111781303A - Handheld exhaled air collection multi-parameter classification collection mechanism - Google Patents
Handheld exhaled air collection multi-parameter classification collection mechanism Download PDFInfo
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- CN111781303A CN111781303A CN202010621138.9A CN202010621138A CN111781303A CN 111781303 A CN111781303 A CN 111781303A CN 202010621138 A CN202010621138 A CN 202010621138A CN 111781303 A CN111781303 A CN 111781303A
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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—Specially adapted to detect a particular component
- G01N33/004—Specially adapted to detect a particular component for CO, CO2
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- 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
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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
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
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- 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
Abstract
The invention provides a handheld exhaled breath collection multi-parameter classification collection mechanism. The invention comprises the following steps: the gas detection section is provided with a sensor for detecting the state parameters of the breathing gas, the gas detection section further comprises a main processor, the main processor is used for controlling the rotary valve to rotate based on the state parameters of the breathing gas so as to change the on-off state of the gas passage, and when the gas passage is smooth, the breathing gas is collected; when the gas passage is blocked, the inhaled gas is not collected. The invention transmits the state parameter of the detected breathing gas to the main processor for judgment through the sensor, thereby controlling the collected gas to enter the waste gas pipeline or the collecting pipeline through the rotation angle of the motor driven steering valve.
Description
Technical Field
The invention relates to the technical field of exhaled air detection, in particular to a handheld exhaled air collection multi-parameter classification 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 pulmonary alveolus expired air collecting device with the bulletin number of CN207779768U can blow air into an air bag, and experiments of large samples are 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, while the prior art mostly adopts the bulletin number of CN 110226931A, namely 'three-way valve', 'first valve', 'second valve' and other valve controls, so as to ensure different states of switching air passages, but electromagnetic valves with various large diameters have large heat productivity, large overall weight, inconvenience in carrying, light weight and miniaturization.
Disclosure of Invention
In light of the above-mentioned technical problems, a handheld exhaled breath collection multi-parameter classification collection mechanism is provided. The invention mainly utilizes the embedded rotary valve, thereby effectively reducing the whole weight of the device. The technical means adopted by the invention are as follows:
a handheld exhaled air collection multi-parameter classification collection mechanism comprises a gas incoming section, a gas detection section, a rotary valve and a gas collection section which are sequentially connected, wherein an exhaled air passage can be formed between the gas incoming section and the rotary valve; when the gas passage is blocked, the inhaled gas is not collected.
Further, the sensor comprises CO2A sensor and/or a flow sensor.
Further, the gas detection section sets up the optical window with sensor probe contact side, the optical window is sphere/cambered surface from interior to exterior, or according to predetermineeing the convex lens face that the central authorities that the proportion adjusted becomes are thick, the edge is thin, and the upper and lower side rigid coupling of optical window has the plastics strengthening rib, and the plastics strengthening rib is square frame type or the square frame type that partly surrounds or other predetermined stable structure, and wherein one side of strengthening rib is fixed on the firm mechanism of exhalation collector.
Further, the rotary valve comprises: valve body, motor support frame and have gas passage's main body frame, the one end and the motor intercommunication of valve body, the other end stretch into main body frame, the through-hole phase-match that this end and main body frame seted up, motor detachably connects on the motor support frame, motor support frame and main body frame fixed connection, the valve body includes first steering valve, at least one waste gas derivation face has been seted up to first steering valve, and any point does not intersect on waste gas derivation face and the through-hole of first steering valve, specifically, first steering valve shape is for being by the cylinder after the vertical cutting in plane.
The gas inlet side of the gas passage is close to the gas inlet side of the gas passage, the gas outlet side of the gas passage is close to the second steering valve, a through hole penetrating the second steering valve is formed in the position, corresponding to the first steering valve, of the second steering valve, and the main body of the second steering valve is cylindrical.
Furthermore, one end of the first steering valve, which extends into the main body frame, is provided with at least one positioning hole, the steering valve further comprises a detection mechanism, the main body frame is provided with a groove for accommodating the detection mechanism, and the detection mechanism is used for emitting light under the control of an external electric control device and identifying the rotating state of the first steering valve based on the state that the light penetrates through the positioning hole.
Furthermore, the positioning hole of the first steering valve comprises an air path positioning hole and an angle positioning hole, the air path positioning hole is perpendicular to the through hole of the first steering valve in space, the air path positioning hole penetrates through the cutting surface of the air path positioning hole and has a certain distance with the air path channel of the first steering valve, and a preset angle is formed between the angle positioning hole and the air path positioning hole.
Furthermore, one end of the second steering valve, which extends into the main body frame, is provided with a positioning hole, the second detection mechanism emits light under the control of the external electric control device, and recognizes the rotation state of the second steering valve based on the state that the light penetrates through the positioning hole, and the positioning hole of the second steering valve is mutually perpendicular to the through hole of the second steering valve in space.
Furthermore, a slotted hole is arranged on one side of the valve body connected with the motor, a rotating shaft is embedded between the slotted hole and the valve body, the outer diameter of the rotating shaft is matched with the inner diameter of the slotted hole of the valve body, and the rotating shaft is connected with the motor.
Furthermore, the material of the rotating shaft is the same as or different from that of the valve body, and the material of the valve body is the same as or different from that of the main body frame, and when the material of the valve body is the same as that of the main body frame, the material of the valve body is rigid; at different times, the valve body is made of flexible materials, and the rotating shaft and the main body frame are made of rigid materials.
According to the invention, the state parameters of the detected breathing gas are transmitted to the main processor for judgment through the sensor, so that the rotation angle of the first steering valve/the second steering valve is driven by the motor, and the collected gas is controlled to enter the waste gas pipeline or the collecting pipeline.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be 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 creative efforts.
FIG. 1 is a schematic view of the main structure of the present invention.
FIG. 2 is a schematic view of a rotary valve according to the present invention.
Fig. 3 is an exploded view of a rotary valve of the present invention.
In the figure: 201. CO22A sensor; 202. a flow/velocity sensor; 203. connecting a corner joint; 204. the sensor is connected with the joint; 301. an optocoupler switch; 302. a first steering valve; 303. a main body portion; 304. a first motor; 305. a motor support frame; 306. and assembling the nut.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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 invention.
As shown in fig. 1, the embodiment discloses a handheld exhaled air collection multi-parameter classification collection mechanism, which comprises a gas inhalation section, a gas detection section, a rotary valve and a gas collection section which are sequentially connected, wherein an exhaled air passage can be formed between the gas inhalation section and the gas detection section, a sensor for detecting the state parameters of exhaled air is arranged on the gas detection section, and the handheld exhaled air collection mechanism further comprises a main processor, wherein the main processor is used for controlling the rotary valve to rotate based on the state parameters of exhaled air so as to change the on-off state of the gas passage, and when the gas passage is unobstructed, the inhaled air is collected; when the gas passage is blocked, the inhaled gas is not collected.
The sensor comprises CO2A sensor 201 and/or a flow sensor 202 fixed to the main body of the gas detection mechanism by a connecting corner joint 203 and a sensor connecting joint 204, respectivelyOn the body supporting part, in the embodiment, the carbon dioxide sensor adopts the infrared principle of non-dispersion, wherein the model can be C500, C600, be convenient for the monitoring of sensor, gaseous detection mechanism is transparent material, specifically can be the plastics material, the exhaled vapor meets the plastic layer and can produce gas of breathing out, the event also the diversion has strengthened the detection precision of sensor through liquefied vapor, for the precision that further strengthens the detection, gaseous detection mechanism sets up to the optical window structure with sensor probe contact side, sphere/cambered surface from inside to outside promptly, or the central authorities that become according to predetermineeing the proportion regulation are thick, the thin convex lens face in edge, the transparency is higher. In this embodiment, the pipe diameter of the gas passage is 4mm, other embodiments can be adjusted within a certain range, in order to enhance the stability of the structure, the upper and lower sides of the optical window are fixedly connected with plastic reinforcing ribs, the plastic reinforcing ribs are square frame type or semi-enclosed square frame type or other stable structures, one side of the plastic reinforcing ribs is fixed on the main shell body of the device or other stable mechanisms, and the stable mechanisms can also bear structural components such as a main processor, a power supply and the like.
As shown in fig. 2 and 3, the rotary valve includes: valve body, motor support frame and the main body frame 303 that has the gas passage, the one end and the first motor 304 intercommunication of valve body, the other end stretch into main body frame, the through-hole phase-match that this end and main body frame seted up, first motor detachably connects on motor support frame 305, motor support frame passes through fitting nut 306 fixed connection with main body frame, the valve body includes first diverter valve 302, sets up a through-hole that link up it on it, and this through-hole diameter and gas passage's diameter phase-match, at least one waste gas derivation face has been seted up to first diverter valve, and any point non-intersect on waste gas derivation face and the through-hole of first diverter valve. The first diverter valve is in the shape of a cylinder which is longitudinally cut by a plane, namely an exhaust gas outlet surface, and the exhaust gas outlet surface can also be in other practical shapes.
The one end that first steering valve stretched into main body frame has seted up at least one locating hole, still includes detection mechanism, main body frame sets up the recess that holds detection mechanism, detection mechanism is used for emitting light under external electrically controlled device's control to the rotation state of first steering valve is discerned based on the state that this light pierces through the locating hole, and in this embodiment, detection mechanism chooses for use photoelectric coupler 301.
In an alternative embodiment, the number of exhaust gas discharge surfaces is one or two, and in the case of two, the two cutting planes are arranged symmetrically, i.e. in an oblong shape, with respect to a longitudinal section of the cylinder through the center of the circle. If the cutting surface is cut by two planes, the number of the positioning holes can be one, if the cutting surface is cut by one plane, the number of the positioning holes is at least two, the second positioning hole and the first positioning hole are on the same plane and have preset angles, in other optional embodiments, the number of the positioning holes can be more, the positioning is more accurate, for example, the third positioning hole is perpendicular to the first positioning hole in space, the distance between the second positioning hole and the first positioning hole is different, namely, the second positioning hole is arranged on one side close to the cutting surface or on the cylindrical main body close to the non-cutting surface.
In order to facilitate fine adjustment of the rotation angle of the rotary valve body, a gear reduction motor is used as a motor for driving the steering valve in the embodiment, and the specific reduction ratio can be selected according to actual conditions, for example, two models of 1:380 and 1:1000 are selected in the embodiment.
The rotary valve body and the main body are made of the same or different materials. If different, then the main part can select for use pk material (polyketone), as supporting the stator, and the plastics material is selected for use to the rotary valve body, as the rotor, and its one side that links to each other with the motor is inlayed and is had the pivot of metal material, and the external diameter of pivot and the slotted hole internal diameter of plastics valve body match, in this embodiment, select for use copper as the rotor, and the pivot of metal material can also effectively prevent the lubricating oil inflow gas passage of motor when guaranteeing sufficient rigidity. If the same, other feasible materials including ceramics may be selected.
The invention applied to the exhaled breath collecting device is taken as an example to explain the whole sampling process, wherein the exhaled breath collecting device comprises a gas detection mechanism and a main processor, a rotary valve 3 is arranged between the gas detection mechanism and the gas collecting mechanism, and the gas detection mechanism comprises CO2A sensor 201 and/or a flow sensor 202, wherein the subject is arranged with a mouthpiece and exhales into the device, and the exhaled air enters from the exhaled air inlet and passes throughCO2After the sensor and/or the flow sensor, the main processor determines whether the exhaled air is dead space air or alveolar air according to a preset standard, and if the exhaled air is dead space air, the exhaled air flows out of the device along the air passage and the plane of the first steering valve; if the air is alveolar air, the main processor controls the first rotary valve to rotate to form a passage for collecting the air.
Specifically, in the embodiment, the processor may select an STM32 embedded low-power-consumption chip based on an ARM core. In the above steps, the preset criteria include the following:
a) when the concentration of the carbon dioxide is higher than the designated threshold value, the rotary valve rotates to realize the collection of the exhaled air, and the concentration threshold value can be set to be 2%.
b) And integrating the time and the flow velocity by using the flow velocity sensor, so that the flow can be acquired. Setting the volume of the evacuated gas flow to be 500-1000 mL
c) The rotation of the rotary valve is judged simultaneously by the flow rate and the carbon dioxide concentration. I.e. the flow rate is in the range of 3L/min to 4L/min and the carbon dioxide concentration is higher than 2%, the selection of the rotary valve is performed. And to execute the acquisition program.
In order to prevent the residual gas in the gas channel from interfering the next subject, the expired gas collecting device also comprises a back-blowing mechanism, at the moment, a back-blowing pipeline is arranged on the main body framework, and the first steering valve is arranged between the upper longitudinal gas passage and the back-blowing gas passage; the back-blowing mechanism comprises a micro air pump, an air outlet of the micro air pump is connected with the back-blowing air passage through an air pipe connecting joint, and a back-blowing mechanism filter for purifying air can be arranged between the micro air pump and the back-blowing air passage. Before the next testee exhales, the miniature air pump is started, the air passage of the first rotary valve is vertical, and residues in the air passage are rapidly removed.
The method comprises the following specific use steps: step 1, before the device is used, the device is reset through the LED screen, namely the flat side of the first rotary valve is upward, the micro air pump of the back flushing mechanism is closed, and other electrical components are in a standby state. Step 2, in CO2The sensor and/or flow sensor detects whether the exhaled air is dead space air or alveolar air, and if the exhaled air is dead space air, the sensor and/or flow sensor detect that the exhaled air is dead space air along the air passage and the first steering valveThe plane of (a) flows out of the device; if the air is alveolar air, the main processor controls the first rotary valve to form a passage for collecting the air. And 3, separating the quick connector male head from the quick connector female head by pressing a button of the quick connector male head, removing the gas collection bag, starting the miniature gas pump before the next testee exhales, and exhausting residual gas in the gas passage in a longitudinal direction of a gas path of the first rotary valve.
During, detect the concrete gesture of first rotary valve through optoelectronic coupler, specifically, the rotary valve slowly rotates under the drive of motor, when optoelectronic coupler detected the light path, prove that first rotary valve is in the through-hole horizontal position, the rotary valve continues to rotate, if detect the light path again in the time of predetermineeing, then prove to have passed through the angle locating hole, judge that the through-hole horizontal position that the rotary valve was in before from this is that the cylinder upwards or the plane upwards, confirm the gesture of first rotary valve from this.
The method of stopping the acquisition also includes different schemes, in particular,
after the acquisition procedure is performed, the rotary valve is switched on, and the exhaled air flows into the exhaled air sampling air bag through the rotary valve.
At this time, the flow rate is determined by the flow rate 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.
After entering the collection mode, the rotary valve is rotated when the gas volume exceeds 1L by the flow sensor. This time in non-acquisition mode. The exhaled air cannot be filled into the air bag.
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; while the invention has been described in detail and with reference to the foregoing embodiments, it will 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; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A handheld exhaled air collection multi-parameter classification collection mechanism is characterized by comprising a gas incoming section, a gas detection section, a rotary valve and a gas collection section which are sequentially connected, wherein an exhaled air passage can be formed between the gas incoming section and the gas detection section; when the gas passage is blocked, the inhaled gas is not collected.
2. The hand-held exhaled breath collection multi-parameter classification collection mechanism according to claim 1, wherein the sensor comprises a CO2 sensor and/or a flow sensor.
3. The mechanism of claim 1 or 2, wherein an optical window is disposed on the contact side of the gas detection section and the sensor probe, the optical window is a spherical surface/cambered surface from inside to outside, or a convex lens surface with a thick center and a thin edge, the convex lens surface is adjusted according to a preset proportion, plastic reinforcing ribs are fixedly connected to the upper side and the lower side of the optical window, the plastic reinforcing ribs are square frames or semi-enclosed square frames or other preset stable structures, and one side of each reinforcing rib is fixed to a stabilizing mechanism of the exhaled gas collector.
4. The hand-held exhaled breath collection multi-parameter classification collection mechanism according to claim 1, wherein the rotary valve comprises: valve body, motor support frame and have gas passage's main body frame, the one end and the motor intercommunication of valve body, the other end stretch into main body frame, the through-hole phase-match that this end and main body frame seted up, motor detachably connects on the motor support frame, motor support frame and main body frame fixed connection, the valve body includes first steering valve, at least one waste gas derivation face has been seted up to first steering valve, and any point does not intersect on waste gas derivation face and the through-hole of first steering valve, specifically, first steering valve shape is for being by the cylinder after the vertical cutting in plane.
5. The hand-held exhaled breath collection multi-parameter classification collection mechanism according to claim 4, further comprising a second diverter valve, wherein the first diverter valve is close to the air inlet side of the air passage, the second diverter valve is close to the air outlet side of the air passage, a through hole is formed in the second diverter valve corresponding to the first diverter valve, and the second diverter valve is cylindrical in main body shape.
6. The hand-held exhaled breath collection multiparameter classified collection mechanism according to claim 5, wherein the end of the first diverter valve that protrudes into the main frame defines at least one positioning hole, and further comprising a detection mechanism, wherein the main frame defines a recess for receiving the detection mechanism, and wherein the detection mechanism is configured to emit light under the control of the external electrical control device, and to recognize the rotation state of the first diverter valve based on the state of the light that penetrates through the positioning hole.
7. The mechanism of any one of claims 4 to 6, wherein the positioning holes of the first turning valve comprise an air passage positioning hole and an angle positioning hole, the air passage positioning hole is perpendicular to the through hole of the first turning valve in space, the air passage positioning hole penetrates through the cutting surface of the positioning hole and is at a certain distance from the air passage of the first turning valve, and a preset angle is formed between the angle positioning hole and the air passage positioning hole.
8. The hand-held exhaled breath collection multiparameter classified collection mechanism according to claim 7, wherein a positioning hole is formed at an end of the second diverter valve that protrudes into the main body frame, the second detection mechanism emits light under the control of the external electronic control device and recognizes the rotation state of the second diverter valve based on the state of the light penetrating through the positioning hole, and the positioning hole of the second diverter valve and the through hole of the second diverter valve are perpendicular to each other in space.
9. The hand-held exhaled breath collection multi-parameter classification collection mechanism according to claim 4, wherein the valve body is provided with a slot at a side connected to the motor, and a rotation shaft is embedded therein, an outer diameter of the rotation shaft matches an inner diameter of the slot of the valve body, and the rotation shaft is connected to the motor.
10. The mechanism of claim 9, wherein the shaft and the valve body are made of the same or different materials, and the valve body and the main frame are made of the same or different materials, and are made of rigid materials when the same; at different times, the valve body is made of flexible materials, and the rotating shaft and the main body frame are made of rigid materials.
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| CN202010621138.9A CN111781303B (en) | 2020-07-01 | 2020-07-01 | Handheld exhaled air collection multi-parameter classification collection mechanism |
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| CN202010621138.9A CN111781303B (en) | 2020-07-01 | 2020-07-01 | Handheld exhaled air collection multi-parameter classification collection mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113219042A (en) * | 2020-12-03 | 2021-08-06 | 深圳市步锐生物科技有限公司 | Device and method for analyzing and detecting components in human body exhaled air |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06221449A (en) * | 1993-01-22 | 1994-08-09 | Japan Tobacco Inc | Rotary valve |
| CN101592601A (en) * | 2008-05-28 | 2009-12-02 | 北京市加华博来科技有限公司 | High-efficiency infrared gas sensor with small volume |
| CN101608695A (en) * | 2009-07-17 | 2009-12-23 | 深圳市中科力函热声技术工程研究中心有限公司 | Rotary valve |
| CN201651418U (en) * | 2010-05-10 | 2010-11-24 | 天津大学 | Rotary type two-position multichannel reversing valve |
| JP2015040770A (en) * | 2013-08-22 | 2015-03-02 | セイコーエプソン株式会社 | Exhaled-gas sampling analyzer and portable type exhaled-gas analyzer |
| CN205026146U (en) * | 2015-09-30 | 2016-02-10 | 王竞 | Ten -way valve |
| CN107389587A (en) * | 2017-09-04 | 2017-11-24 | 苏州诺联芯电子科技有限公司 | The non-dispersive infrared gas sensor and its detection method of Monitoring lower-cut can be reduced |
| CN107420585A (en) * | 2017-08-28 | 2017-12-01 | 苏州市合叶精密机械有限公司 | A kind of tap |
| CN109938736A (en) * | 2019-04-03 | 2019-06-28 | 浙江大学 | A kind of portable expiratory air acquisition device and method |
| CN110226931A (en) * | 2019-07-09 | 2019-09-13 | 合肥妙可莱生物科技有限公司 | A kind of breath analysis device and application method |
| CN209595789U (en) * | 2018-12-28 | 2019-11-08 | 无锡市尚沃医疗电子股份有限公司 | A kind of hand-held end-tidal sampling apparatus |
-
2020
- 2020-07-01 CN CN202010621138.9A patent/CN111781303B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06221449A (en) * | 1993-01-22 | 1994-08-09 | Japan Tobacco Inc | Rotary valve |
| CN101592601A (en) * | 2008-05-28 | 2009-12-02 | 北京市加华博来科技有限公司 | High-efficiency infrared gas sensor with small volume |
| CN101608695A (en) * | 2009-07-17 | 2009-12-23 | 深圳市中科力函热声技术工程研究中心有限公司 | Rotary valve |
| CN201651418U (en) * | 2010-05-10 | 2010-11-24 | 天津大学 | Rotary type two-position multichannel reversing valve |
| JP2015040770A (en) * | 2013-08-22 | 2015-03-02 | セイコーエプソン株式会社 | Exhaled-gas sampling analyzer and portable type exhaled-gas analyzer |
| CN205026146U (en) * | 2015-09-30 | 2016-02-10 | 王竞 | Ten -way valve |
| CN107420585A (en) * | 2017-08-28 | 2017-12-01 | 苏州市合叶精密机械有限公司 | A kind of tap |
| CN107389587A (en) * | 2017-09-04 | 2017-11-24 | 苏州诺联芯电子科技有限公司 | The non-dispersive infrared gas sensor and its detection method of Monitoring lower-cut can be reduced |
| CN209595789U (en) * | 2018-12-28 | 2019-11-08 | 无锡市尚沃医疗电子股份有限公司 | A kind of hand-held end-tidal sampling apparatus |
| CN109938736A (en) * | 2019-04-03 | 2019-06-28 | 浙江大学 | A kind of portable expiratory air acquisition device and method |
| CN110226931A (en) * | 2019-07-09 | 2019-09-13 | 合肥妙可莱生物科技有限公司 | A kind of breath analysis device and application method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113219042A (en) * | 2020-12-03 | 2021-08-06 | 深圳市步锐生物科技有限公司 | Device and method for analyzing and detecting components in human body exhaled air |
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| CN111781303B (en) | 2023-02-10 |
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