CN208751924U - A kind of exhaled gas sampler - Google Patents
A kind of exhaled gas sampler Download PDFInfo
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- CN208751924U CN208751924U CN201821338681.2U CN201821338681U CN208751924U CN 208751924 U CN208751924 U CN 208751924U CN 201821338681 U CN201821338681 U CN 201821338681U CN 208751924 U CN208751924 U CN 208751924U
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- gas
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- bottle body
- storage bottle
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Abstract
The utility model discloses a kind of exhaled gas samplers, it is related to blood sugar test equipment technical field, it is serious to solve existing gas sampling device loss, and the technical issues of without sampling amount prompt, it includes the gas storage bottle body separated up and down, air inlet pipe, escape pipe, air pressure sensing switch and the suggestion device being electrically connected with air pressure sensing switch, it is provided with molecular sieve filtration layer in the middle part of gas storage bottle body, gas storage bottle body is divided into the air storage chamber on top and the transition gas chamber of lower part；The bottleneck of band connection screw thread is provided at the top of gas storage bottle body；Air inlet pipe passes through molecular sieve filtration layer and lower end is provided with check valve one, and escape pipe is located at air storage chamber and is pierced by from bottleneck.The exhaled gas sampler of the utility model is provided with air pressure sensing switch and suggestion device, convenient for ensureing the gas gross of single sample detection, prevents the gas sampled of detection excessive or very few and influences testing result, improve the accuracy and sensitivity of detection.
Description
Technical field
The utility model relates to blood sugar test equipment technical fields, sample and fill more particularly to a kind of exhaled gas
It sets.
Background technique
At present during the diagnosis of certain diseases (such as diabetes), the venous blood or tip that extract patient are generally required
Blood carries out the chemical examination of several indexs, and result of laboratory test and conventional index is compared, so that doctor be helped accurately to diagnose
Disease.The methods for the diagnosis of diseases of this blood count has stronger specific aim and higher accuracy, wide in medical diagnosis on disease field
General use.Since blood count needs the blood of the amount of adopting patient, this diagnostic method needs to puncture the skin of patient, venous blood
Pipe, and there are wounds, this can bring a degree of pain to patient, and dizzy mass formed by blood stasis patient can even fall in a swoon；If health care
Condition is poor, it is also possible to cause to hand over and infect again.In today that medical technology is constantly reformed, painless non-invasive therapy has become and becomes
The main trend of medical technology development, this methods for the diagnosis of diseases of blood count also Challenge.
Taking diabetes as an example, after suffering from diabetes due to people, internal insufficient insulin or insufficiency, so that body fat quilt
It largely employs, human body internal cause fat acid cleavage excessively causes amounts of acetone to increase relatively, and the acetone in human body respiration gas is caused to contain
Amount also increases, and the exhaled gas sampler of the invention is realized noninvasive using the detection to content of acetone in exhaled gas
Diagnose diabetes.It is converted into signal by the content that high-precision acetone gas sensor will test acetone in gas, by micro-
It is output to display component after processor processing, is compared with reference data, blood glucose situation is reacted, can effectively reduce patient's
Pain, but often there is loss function that is serious, and prompting without sampling amount in existing expiration sampler, cause sampling inaccurate, shadow
Ring detection.
Utility model content
The purpose of this utility model is that: in order to which existing gas sampling device is lost seriously in use, and nothing takes
The technical issues of sample amount prompts provides a kind of can prompt to target sampling amount and convenient for the exhaled gas of Reusability sampling dress
It sets.
The utility model specifically uses following technical scheme to achieve the goals above:
A kind of exhaled gas sampler, including gas storage bottle body, further include air inlet pipe, escape pipe, air pressure sensing switch and
The suggestion device being electrically connected with air pressure sensing switch, the gas storage bottle body are divide into upper part and lower part, and upper and lower two parts pass through spiral shell
Line is connected with sealing ring, and is provided with molecular sieve filtration layer in the middle part of the gas storage bottle body, and the molecular sieve filtration layer is by storage cylinder
Body is divided into the air storage chamber on top and the transition gas chamber of lower part；The bottleneck of protrusion, the bottleneck are provided at the top of the gas storage bottle body
The connection screw thread for being connected and fixed is provided on outer wall；The air inlet pipe lower end is located at transition gas chamber and is provided with check valve
One, the upper end of air inlet pipe passes through molecular sieve filtration layer；The escape pipe is located at air storage chamber and is pierced by from bottleneck.
Further, a kind of prioritization scheme as gas storage bottle body top and the bottom connection structure, the gas storage bottle body it is upper
Lower two parts are separately positioned, and the top sub-bottle wall lower edge of the gas storage bottle body is provided with annular projection one, the gas storage bottle body
Lower part sub-bottle wall top edge be provided with annular projection two and annular projection three；The annular projection one is arranged in bottle wall middle layer,
And the outside of annular projection one is provided with screw thread, the annular projection two and annular projection three and annular projection one cooperates, it is described
The inside of annular projection two is provided with the screw thread matched on the outside of annular projection one, the annular projection three and annular projection one
Lower surface match；The fit inside of the annular projection one and annular projection three constitutes the placement for placing molecular sieve filtration layer
Slot.
Further, the air pressure sensing switch is arranged in air storage chamber.
The application method of exhaled gas sampler: baby check valve is arranged in air inlet pipe lower end, by the thin upper end of air inlet pipe
Across molecular sieve filtration layer, molecular sieve filtration layer and air inlet pipe lower end are put into the lower half portion bottle body of gas storage bottle body, and paid attention to
The leakproofness of molecular sieve filtration layer and bottle body, connect gas storage bottle body top sub-bottle body and lower part sub-bottle body, air inlet pipe upper end from
Bottleneck passes through；Then it is connect by the connection screw thread on bottleneck with external gas-detecting device, air pressure sensing switch and outlet
The junction of gas-detecting device and bottleneck is arranged in pipe, and after connection, gas storage is protruded into the lower end of air pressure sensing switch and escape pipe
The air storage chamber of bottle body, air pressure sensing switch and the buzzer or signal lamp of suggestion device are electrically connected；Bottleneck and external gas
Upper end seals after detection device connection, is provided with check valve two on escape pipe.In use, importing exhaled gas to mistake from air inlet pipe
Gas chamber is crossed, gas enters air storage chamber after the upward filtration treatment of molecular sieve filtration layer, increases with gas is imported, air pressure in bottle body
Increase the target zone air pressure for reaching air pressure sensing switch, air pressure sensing switch control is sent out as the buzzer of suggestion device at this time
Sound or signal lamp flashing out, prompt user to stop exhaling.
A kind of application mode of exhaled gas sampler: diabetes breath detection device, diabetes breath detection device
Including sampling part and detection part, sampling part is connected with detection part detachable, and the sampling part is exhaled gas
Sampler, the detection part include the micro air pump connecting with escape pipe, by the gas outlet of tracheae and micro air pump company
Logical sensing chamber, gas sensor, signal processing circuit, converter, microprocessor and the display group being arranged in inside sensing chamber
Part, the gas sensor, signal processing circuit, converter and microprocessor are sequentially connected.When in exhaled gas sampler
Air pressure reaches the target zone air pressure of air pressure sensing switch, while air pressure sensing switch control suggestion device works, opens micro-
Type air pump switch uniformly inputs dry exhaled gas to sensing chamber, and micro air pump uses miniature constant displacement pump, and gas sensor is
Acetone gas sensor, miniature constant displacement pump, which ensures, detects indoor air inlet uniformity, improves the accuracy in detection of acetone gas sensor.
Inlet pipe connection is provided in the detection device, inlet pipe connection is removably connected with expiration cover, air inlet outward
Connecting tube inwardly with air inlet pipe detachable connection, forms air inlet, detachable expiration cover is conveniently replaceable or cleaning and sterilizing.Simultaneously
More convenient when in order to use, the diabetes breath detection device is equipped with to hold the handle groove taken, the handle groove setting
In the side far from air inlet pipe.It exhales convenient for hand-held detection device to air inlet pipe.
Further, it is influenced to reduce the error brought by temperature change, the detection interior is additionally provided with temperature benefit
Sensor is repaid, the temperature compensation sensor is connect by I/O interface with microprocessor.Temperature compensation sensor is using digitlization
Temperature sensor DS18B20, to correct temperature drift bring data error.
The working principle of diabetes breath detection device: after suffering from diabetes due to people, internal insufficient insulin or function are not
Entirely, so that body fat is largely employed, human body internal cause fat acid cleavage excessively causes amounts of acetone to increase relatively, and human body is caused to exhale
Content of acetone in air-breathing body also increases, and the exhaled gas sampler of the invention is utilized to content of acetone in exhaled gas
Detection, realize non-invasive diagnosis diabetes.Its content that will test acetone in gas by high-precision acetone gas sensor
It is converted into signal, by being output to display component after microprocessor processes, is compared with reference data, reacts blood glucose situation；Wherein
The filter layer is realized by molecular sieve and is dehumidified.
Wherein: the mechanism of gas sensor method is occurred using between the sensitive materials and tested gas for constituting sensor
The measurement of tested gas is realized in a kind of predetermined substance exchange so as to cause the variation of sensitive materials electrical properties.These electrical properties
It is primarily referred to as the intrinsic frequency, conductivity and capacitor etc. of sensitive materials.Effect between sensitive body and tested gas is mainly object
Reason absorption and chemisorption.So-called physical absorption refers to the suction that gas molecule generates on sensitive body surface because of electronegativity gravitation
It is attached；Chemisorption is that gas molecule on sensitive body surface generates a kind of redox reaction.Therefore, it is led caused by physical absorption
Electric type is ionic conduction type, and chemisorption is then electron-conductive.Leading to common chemical material is dielectric, metal oxygen
Compound and high molecular polymerization film etc..
There are three types of the conversion detection limits of chemical material: first is that detection sensitive materials generate the change of impedance because of adsorption gas molecule
Change and leads to potential change；Second is that detection sensitive body is because adsorbed gas causes crystal oscillator frequency caused by mass change to change；
Third is that the variation of frequency of oscillation when detection is using sensitive body as capacitor pole piece.As long as accurately measuring potential change, crystal oscillator
The numerical value of frequency variation and frequency of oscillation variation, so that it may obtain the concentration of tested gas indirectly.
The beneficial effects of the utility model are as follows:
In general, the exhaled gas sampler of the utility model is provided with separable two parts band convex annular up and down
The glass body for playing part the advantage is that convenient for cleaning, sterilize replacement and assembly, meanwhile, exhaled gas sampler is set
It is equipped with air pressure sensing switch and suggestion device, convenient for ensureing the gas gross of single sample detection, prevents the gas sampled of detection
It is excessive or very few and influence testing result, improve the accuracy and sensitivity of detection.
1. select glass gas cylinder, safety and environmental protection, not with gas reaction to be detected and influence result；Exhaled gas overweights sky
Gas, by the way of filtering from bottom to top, filter effect is more preferable.
2. the upper end of air inlet pipe is provided in horn-like detachable expiration cover, detachable cover of exhaling is conveniently replaceable or clearly
Wash disinfection, health.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of exhaled gas sampler；
Fig. 2 is the structural schematic diagram of exhaled gas detection device；
Appended drawing reference: 1-air inlet, 2-bottlenecks, 3-connection screw threads, 4-air inlet pipe, 5-check valves one, 6-transition
Gas chamber, 7-molecular sieve filtration layers, 8-gas storage bottle bodies, 9-air storage chambers, 10-escape pipes, 11-air pressure sensings switch, 12-rings
Shape protrusion one, 13-annular projections two, 14-annular projections three, 15-inlet pipe connections, 16-miniature constant displacement pumps, 17-detections
Room, 18-handles, 19-gas sensors, 20-, which exhale, covers.
Specific embodiment
In order to which those skilled in the art better understand the utility model, with reference to the accompanying drawing with following embodiment to this
Utility model is described in further detail.
Embodiment
As shown in Figure 1, the utility model provides a kind of exhaled gas sampler, including gas storage bottle body 8, it further include air inlet
Pipe 4, escape pipe 10, air pressure sensing switch 11 and the suggestion device being electrically connected with air pressure sensing switch 11, gas storage bottle body 8, which divides, is
Upper and lower two parts, upper and lower two parts are connected by screw thread with sealing ring, and molecular sieve filtration layer 7 is provided in the middle part of gas storage bottle body 8,
Molecular sieve filtration layer 7 divides gas storage bottle body 8 to the air storage chamber 9 for top and the transition gas chamber 6 of lower part；It is arranged at the top of gas storage bottle body 8
There is the bottleneck 2 of protrusion, the connection screw thread 3 for being connected and fixed is provided on 2 outer wall of bottleneck；4 lower end of air inlet pipe is located at transitional gas
Room 6 and it is provided with check valve 1, the upper end of air inlet pipe 4 passes through molecular sieve filtration layer 7；Escape pipe 10 is located at air storage chamber 9 and from bottle
Mouth 2 is pierced by.
Further, a kind of prioritization scheme as 8 top and the bottom connection structure of gas storage bottle body, gas storage bottle body 8 up and down
Two parts are separately positioned, and the top sub-bottle wall lower edge of gas storage bottle body 8 is provided with annular projection 1, the lower part of gas storage bottle body 8
Sub-bottle wall top edge is provided with annular projection 2 13 and annular projection 3 14；Annular projection 1 is arranged in bottle wall middle layer, and ring
The outside of shape protrusion 1 is provided with screw thread, annular projection 2 13 and annular projection 3 14 and annular projection 1 cooperates, cyclic annular
The inside of protrusion 2 13 is provided with the screw thread matched with one 12 outside of annular projection, annular projection 3 14 and annular projection 1
Lower surface match；The fit inside of annular projection 1 and annular projection 3 14, which is constituted, places putting for molecular sieve filtration layer 7
Set slot.
Further, air pressure sensing switch 11 is arranged in air storage chamber 9.
The application method of exhaled gas sampler: baby check valve is arranged in 4 lower end of air inlet pipe, by thin upper of air inlet pipe 4
Molecular sieve filtration layer 7 and 4 lower end of air inlet pipe are put into the lower half portion bottle body of gas storage bottle body 8 across molecular sieve filtration layer 7 by end,
And pay attention to the leakproofness of molecular sieve filtration layer 7 Yu bottle body, connect the top sub-bottle body and lower part sub-bottle body of gas storage bottle body 8, air inlet
4 upper end of pipe is passed through from bottleneck 2；Then it is connect by the connection screw thread 3 on bottleneck 2 with external gas-detecting device, air pressure transmission
The junction of gas-detecting device Yu bottleneck 2 is arranged in sense switch 11 and escape pipe 10, after connection, air pressure sensing switch 11 with out
The air storage chamber 9 of gas storage bottle body 8, buzzer or the signal lamp electricity of air pressure sensing switch 11 and suggestion device are protruded into the lower end of tracheae 10
Property connection；Upper end seals after bottleneck 2 is connect with external gas-detecting device, is provided with check valve two on escape pipe 10.It uses
When, exhaled gas is imported to transition gas chamber 6 from air inlet pipe 4, and gas enters gas storage after the upward filtration treatment of molecular sieve filtration layer 7
Room 9 is increased with gas is imported, and air pressure increase reaches the target zone air pressure of air pressure sensing switch 11, at this time air pressure in bottle body
The control of sensitive switch 11 makes a sound as the buzzer of suggestion device or signal lamp flashing, and user is prompted to stop exhaling.
A kind of application mode of exhaled gas sampler: diabetes breath detection device, diabetes breath detection device
Including sampling part and detection part, sampling part is connected with detection part detachable, and sampling part is exhaled gas sampling
Device, detection part includes the micro air pump connecting with escape pipe 10, the inspection that is connected to by tracheae with the gas outlet of micro air pump
Survey room 17, the gas sensor 19 being arranged in inside sensing chamber 17, signal processing circuit, converter, microprocessor and display group
Part, gas sensor 19, signal processing circuit, converter and microprocessor are sequentially connected.When gas in exhaled gas sampler
Pressure reaches the target zone air pressure of air pressure sensing switch 11 and opens while air pressure sensing switch 11 controls suggestion device work
Micro air pump switch, to sensing chamber 17, uniformly the dry exhaled gas of input, micro air pump use miniature constant displacement pump 16, and gas passes
Sensor 19 is acetone gas sensor, and miniature constant displacement pump 16 ensures air inlet uniformity in sensing chamber 17, improves acetone gas sensor
Accuracy in detection.Wherein microprocessor uses AT89C501 single-chip microcontroller, and converter selects ADC121S101, gas sensor 9
For acetone gas sensor, sensor material SnO2Or ZnO2。
Inlet pipe connection 15 is provided in detection device, inlet pipe connection 15 is removably connected with expiration cover 20 outward, into
Gas connecting tube 15 inwardly with 4 detachable connection of air inlet pipe, forms air inlet 1, and detachable expiration cover 20 is conveniently replaceable or cleans
Disinfection.More convenient when simultaneously in order to use, diabetes breath detection device is equipped with to hold 18 slot of handle taken, 18 slot of handle
It is arranged far from the side of air inlet pipe 4.It exhales convenient for hand-held detection device to air inlet pipe 4.
Further, it is influenced to reduce the error brought by temperature change, is additionally provided with temperature-compensating in sensing chamber 17
Sensor, temperature compensation sensor are connect by I/O interface with microprocessor.Temperature compensation sensor is passed using digital temperature
Sensor DS18B20, to correct temperature drift bring data error.
The above, the only preferred embodiment of the utility model, are not intended to limit the utility model, the utility model
Scope of patent protection be subject to claims, it is equivalent made by all specifications and accompanying drawing content with the utility model
Structure change similarly should be included in the protection scope of the utility model.
Claims (3)
1. a kind of exhaled gas sampler, including gas storage bottle body (8), it is characterised in that: further include air inlet pipe (4), escape pipe
(10), air pressure sensing switch (11) and the suggestion device being electrically connected with air pressure sensing switch (11), the gas storage bottle body (8) point
For upper and lower two parts, upper and lower two parts are connected by screw thread with sealing ring, and are provided with molecular sieve in the middle part of the gas storage bottle body (8)
Gas storage bottle body (8) is divided into the air storage chamber (9) on top and the transition gas chamber of lower part by filter layer (7), the molecular sieve filtration layer (7)
(6)；It is provided with the bottleneck (2) of protrusion at the top of the gas storage bottle body (8), is provided on bottleneck (2) outer wall solid for connecting
Fixed connection screw thread (3)；Air inlet pipe (4) lower end is located at transition gas chamber (6) and is provided with check valve one (5), air inlet pipe (4)
Upper end pass through molecular sieve filtration layer (7)；The escape pipe (10) is located at air storage chamber (9) and is pierced by from bottleneck (2).
2. exhaled gas sampler according to claim 1, it is characterised in that: up and down the two of the gas storage bottle body (8)
It is partially separated setting, the top sub-bottle wall lower edge of the gas storage bottle body (8) is provided with annular projection one (12), the storage cylinder
The lower part sub-bottle wall top edge of body (8) is provided with annular projection two (13) and annular projection three (14)；The annular projection one
(12) it is arranged in bottle wall middle layer, and is provided with screw thread on the outside of annular projection one (12), the annular projection two (13) and ring-type
Raised three (14) and annular projection one (12) cooperate, and are provided with and annular projection one (12) on the inside of the annular projection two (13)
The screw thread that outside matches, the annular projection three (14) match with the lower surface of annular projection one (12)；The ring-type is convex
The fit inside for playing one (12) and annular projection three (14) constitutes the placing groove for placing molecular sieve filtration layer (7).
3. exhaled gas sampler according to claim 1 or 2, it is characterised in that: the air pressure sensing switchs (11)
Setting is in air storage chamber (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821338681.2U CN208751924U (en) | 2018-08-20 | 2018-08-20 | A kind of exhaled gas sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821338681.2U CN208751924U (en) | 2018-08-20 | 2018-08-20 | A kind of exhaled gas sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208751924U true CN208751924U (en) | 2019-04-16 |
Family
ID=66079702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821338681.2U Expired - Fee Related CN208751924U (en) | 2018-08-20 | 2018-08-20 | A kind of exhaled gas sampler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208751924U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110412089A (en) * | 2019-08-22 | 2019-11-05 | 北京知几未来医疗科技有限公司 | One kind being based on TiO2Gas sensor, preparation method and the breath detection device of nano sensitive material |
| CN117006403A (en) * | 2023-07-19 | 2023-11-07 | 西藏轻便氧健康科技有限公司 | Portable liquid oxygen storage device |
-
2018
- 2018-08-20 CN CN201821338681.2U patent/CN208751924U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110412089A (en) * | 2019-08-22 | 2019-11-05 | 北京知几未来医疗科技有限公司 | One kind being based on TiO2Gas sensor, preparation method and the breath detection device of nano sensitive material |
| CN117006403A (en) * | 2023-07-19 | 2023-11-07 | 西藏轻便氧健康科技有限公司 | Portable liquid oxygen storage device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190416 Termination date: 20200820 |