CN112773409A - Self-charging maintenance device for handheld expired air sampler - Google Patents
Self-charging maintenance device for handheld expired air sampler Download PDFInfo
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- CN112773409A CN112773409A CN202011615206.7A CN202011615206A CN112773409A CN 112773409 A CN112773409 A CN 112773409A CN 202011615206 A CN202011615206 A CN 202011615206A CN 112773409 A CN112773409 A CN 112773409A
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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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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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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
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Sampling And Sample Adjustment (AREA)
Abstract
The invention provides a self-charging maintenance device of a handheld expired air sampler. The handheld expired air sampler comprises a base, and a charging mechanism, a cleaning mechanism and a control mechanism which are arranged in the base, wherein the charging mechanism is used for charging the handheld expired air sampler, the cleaning mechanism is used for cleaning an expired air pipeline in the handheld expired air sampler, the control mechanism is used for controlling the running state of the cleaning mechanism, the output end of the cleaning mechanism extends out of the top end of the base, and the output end of the charging mechanism extends out of the top end of the base. After the handheld expired air sampler finishes sampling, the handheld expired air sampler can be quickly charged, and the reliability and the continuity of next acquisition are ensured. In the charging process, the internal expiration pipeline of the handheld expired air sampler is dried through the cleaning mechanism, the water vapor residue of a tested person after blowing is removed, the corrosion of the water vapor to the pipe wall is prevented, and meanwhile, the confusion in the expired air sampling process of a plurality of testers is effectively prevented.
Description
Technical Field
The invention relates to the technical field of exhaled gas detection, in particular to a self-charging maintenance device of a handheld exhaled gas sampler.
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, such as a handheld exhalation analyzer with the publication number of CN103487479A, which collects the exhaled breath of a subject to an air chamber, pumps the exhaled breath to a collection end through an air pump, and sets a one-way valve therebetween to ensure the single trend of the exhaled breath; CN204218935U "alveolar expired air collector" adopts the same concept, and it ensures that collected alveolar air does not return through the control action of the one-way valve by opening the switch after storing a part of expired air. If the existing breath analyzer is matched with a charger, the problems of complex charging matching structure, unstable placement caused by overweight of an electromagnetic valve and the like exist.
Disclosure of Invention
In view of the above-mentioned technical problems, a self-charging maintenance device for a handheld exhaled breath sampler is provided. The technical means adopted by the invention are as follows:
the utility model provides a hand-held type expired air sampler is from maintaining device that charges, includes the base and sets up charging mechanism, clean mechanism and the control mechanism in the base, charging mechanism is used for charging for hand-held type expired air sampler, clean mechanism is used for carrying out cleaning treatment for the inside exhaling pipe way of hand-held type expired air sampler, control mechanism is used for controlling the running state of clean mechanism, the output of clean mechanism stretches out in the top of base, the output of charging mechanism stretches out in the top of base.
Further, the cleaning mechanism comprises a drying pipeline, the drying pipeline comprises an input end communicated with the atmosphere and an output end connected with an internal expiration pipeline of the handheld expiration sampler, and an external circulation air pump is arranged between the input end and the output end.
Further, an air purification pipe is connected to the drying pipeline.
Furthermore, an electromagnetic valve is arranged on a pipeline connecting the external circulating air pump with the input end and/or the output end, and the input end of the electromagnetic valve is also communicated with a clean air source.
Furthermore, the charging mechanism comprises a charging adapter plate, a charging adapter connected with the exhaled air sampler is placed on the charging adapter plate, and the adapter is connected with the bottom through a mechanical piece. And a plurality of binding posts are arranged on the top of the bracket.
Further, the charging mechanism is connected with the controller, the charging module of the controller comprises a voltage detection module for detecting the voltage values of the batteries at the two ends of the battery of the handheld exhaled air sampler, a current detection module for detecting the current values of the batteries, an overvoltage protection module for controlling the charging progress according to the voltage values of the batteries, an overcurrent protection module for controlling the charging progress according to the current values of the batteries and a surge protection module for controlling the charging progress according to the load voltage values, and the controller is further connected with a display device which can enable the charging progress of the charging battery being charged to be checked by a user.
Furthermore, the inside expired gas pipeline that is equipped with of hand-held type expired gas sample thief, the bottom of expired gas pipeline is equipped with the male head of quick-operation joint, and the output of dry pipeline is equipped with the female head of quick-operation joint rather than matching, when the male head of quick-operation joint docks with the female head of quick-operation joint completely, the gas circuit of gaseous collection mechanism part link up, and when the male head of quick-operation joint separated with the female head of quick-operation joint, the gas circuit of gaseous collection mechanism part was closed.
Furthermore, the quick connector male comprises a male shell, the male shell is in threaded connection with the main shell of the hand-held type exhaled air sampler through external threads, a spring core is arranged in the male shell and comprises a spring and a valve core connected with the spring, the spring is fixed in the male shell, the valve core can freely move up and down in the male shell, a plurality of through holes for ventilation are arranged at the connecting side of the valve core and the spring,
the spring is in contact with the inner wall of the male shell at the non-opening section under the natural condition of not being subjected to external force, the whole body is sealed, and under the condition of being subjected to certain external force, the spring is compressed, and the through hole section and the upper and lower pipelines form a passage to finish the transmission of gas;
the quick-acting connector male head further comprises a button part and a sliding part connected with the button part, a slide way matched with the sliding part is arranged on a shell of the quick-acting connector male head, the button part is connected with the shell of the quick-acting connector male head through an elastic part, a pushing part is arranged on the opposite side of the button part on the shell of the quick-acting connector male head and connected in a pushing part groove formed in the shell of the quick-acting connector male head through the elastic part, the pushing part is of a dumbbell structure, namely the cross sectional area of the upper section and the middle section of the pushing part is larger than that of the middle section, a through hole matched with the shape of the upper section and the shape of the middle section of a dumbbell is formed in the sliding part on the side, after the quick-acting connector female head extends into the quick-acting connector male head, the quick-acting connector female head extrudes; when the quick connector needs to be taken out, the button part is pushed, the lower section of the pushing part falls into the sliding part, and the upper section of the pushing part extrudes the female head of the quick connector;
female head of quick-operation joint includes female first shell, and female first shell links to each other with clean mechanism output through its outside screw thread, and the tip of spiro union portion is flange portion, and flange portion can touch with the promotion portion of the public head of quick-operation joint, and the flange portion top is equipped with the sealing washer for can stretching into in the portion of stretching into of the public head of quick-operation joint in stretching into, the inside same spring core that is equipped with of female first shell.
After the handheld expired air sampler finishes sampling, the handheld expired air sampler can be quickly charged, and the reliability and the continuity of next acquisition are ensured. In the charging process, the internal expiration pipeline of the handheld expired air sampler is dried through the cleaning mechanism, the water vapor residue of a tested person after blowing is removed, the corrosion of the water vapor to the pipe wall is prevented, and meanwhile, the confusion in the expired air sampling process of a plurality of testers is effectively prevented. The gas path of the gas collection mechanism part is communicated when the male and female quick connectors are matched for use; when the device is separated, the gas path of the gas acquisition mechanism is closed, so that the expired gas of a non-subject is effectively prevented from entering the expired gas path.
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 simplified system diagram of the present invention.
Fig. 2 is a schematic view of the internal overall structure of the embodiment of the present invention.
FIG. 3 is a perspective view of a top view of the internal construction of an embodiment of the present invention.
Fig. 4 is a perspective view of a side view of an internal construction of an embodiment of the invention.
FIG. 5 is a top view of the internal structure of an embodiment of the present invention.
In the figure: 501. a base circuit board; 502. a charger transformer; 503. a high-efficiency purification connecting pipe; 504. a corner connecting joint; 505. an electromagnetic valve; 506. an air purification pipe; 507. a pneumatic connection joint; 508. an external circulation air pump.
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, an embodiment of the present invention discloses a self-charging maintenance device for a handheld exhaled breath sampler, which includes a base, and a charging mechanism, a cleaning mechanism and a control mechanism which are disposed in the base, wherein the charging mechanism is configured to charge the handheld exhaled breath sampler, the handheld exhaled breath sampler may be "a handheld exhaled breath collection device" disclosed in CN111671472A or other devices suitable for exhaled breath collection, the cleaning mechanism is configured to clean an internal exhalation pipe of the handheld exhaled breath sampler, the control mechanism is configured to control an operation state of the cleaning mechanism, an output end of the cleaning mechanism extends out of a top end of the base, and an output end of the charging mechanism extends out of the top end of the base.
As shown in fig. 2 to 5, the cleaning mechanism is divided into an external cleaning passage and an internal air source cleaning passage,
the internal gas source cleaning device mainly comprises a drying pipeline, the drying pipeline comprises an input end communicated with the atmosphere and an output end connected with an internal expiration pipeline of the handheld expiration sampler, an external circulation air pump 508 is arranged between the input end and the output end, and the drying pipeline is further connected with an air purification pipe 506. And a pipeline for connecting the external circulating air pump with the input end and/or the output end is provided with an electromagnetic valve 505, and the input end of the electromagnetic valve is also communicated with an external cleaning air source. In this embodiment, the internal air source is accessed by indoor air, and the pipeline is connected to the base of the sampler through the corner connector 504, so as to clean the sampler. The external air source that inserts can realize gaseous from tail end adapter access, washs through solenoid valve control. Wherein the content of the first and second substances,
the advantage of using internal gas source control is that the sampler can be cleaned directly without the need for an external gas cylinder. The specific work flow at this time is as follows: the air pump extracts ambient air, gets into air purification pipe, realizes purifying, and the solenoid valve is in the state of sample thief and purge tube UNICOM this moment. The advantage of adopting inside air supply control lies in that the washing is cleaner, and specific work flow is this moment: one end of the air cylinder is connected with an air cylinder or other devices for providing clean air source, and the other end is connected with the sample inlet of the electromagnetic valve. The electromagnetic valve is in a mode that an external air source is communicated with the charger base, the top-end exhaled air sampler is directly cleaned by the external air source under the condition, for this reason, if one electromagnetic valve is selected, the electromagnetic valve is at least a two-position three-way valve, and in other optional embodiments, the electromagnetic valve can be a valve with more functions and more outlets. The internal cleaning function and the external cleaning function are mainly realized by switching the electromagnetic valve through the controller.
In an alternative embodiment, a coarse cleaning and a multiple division of a fine cleaning can be provided, wherein the fine cleaning comprises a detachable high-efficiency cleaning connecting pipe 503, and the shell is reserved with a detachable channel suitable for the shape of the shell.
The charging mechanism comprises a charging adapter plate, a charging adapter connected with the exhaled air sampler is arranged on the charging adapter plate, and the adapter is connected with the bottom through a mechanical piece. And a plurality of binding posts are arranged on the top of the bracket.
The control device has the functions of supplying power to the battery and simultaneously controlling the air passage to be switched off. The feedback of the sampler, the cleaning process and the running state can be realized. Specifically, the charging mechanism links to each other with the controller, and the module of charging of controller is including the voltage detection module that is used for detecting the battery voltage value at hand-held type exhaled breath sampler battery both ends, the current detection module of detection battery current value, still including be used for according to the overvoltage protection module of battery voltage value control progress of charging, be used for according to the overcurrent protection module of battery current value control progress of charging and according to the surge protection module of load voltage value control progress of charging, the controller still is connected with display device, and this display device can supply the user with the progress of charging of the rechargeable battery who is charging to look over.
In this embodiment, the charging mechanism includes a PCB board and a contact spring pin fixed in the base, the PCB board is provided with a positive connection end, a ground end and a negative connection end as the base circuit main board 501, the contact spring pin is respectively connected to the PCB board, the PCB board is further connected to the power socket, the power input interface and the charger transformer 502, the PCB board is further connected to the press switch, and the contact spring pin and the press switch are both protruded from the top end of the base.
The inside expired gas pipeline that is equipped with of hand-held type expired gas sample thief, the bottom of expired gas pipeline is equipped with pneumatic connector, specifically is the male head of quick-operation joint, and the output of dry pipeline is equipped with pneumatic connector 507, specifically is rather than the female head of quick-operation joint who matches, when the male head of quick-operation joint docks completely with the female head of quick-operation joint, the gas circuit of gaseous collection mechanism part link up, and when the male head of quick-operation joint separated with the female head of quick-operation joint, the gas circuit of gaseous collection mechanism part was closed.
The quick connector male comprises a male shell, the male shell is in threaded connection with a main shell of the hand-held type expired air sampler through external threads, a spring core is arranged in the male shell and comprises a spring and a valve core connected with the spring, the spring is fixed in the male shell, the valve core can freely move up and down in the male shell, a plurality of through holes for ventilation are arranged at the connecting side of the valve core and the spring,
the spring is in contact with the inner wall of the male shell at the non-opening section under the natural condition of not being subjected to external force, the whole body is sealed, and under the condition of being subjected to certain external force, the spring is compressed, and the through hole section and the upper and lower pipelines form a passage to finish the transmission of gas;
the quick-acting connector male head further comprises a button part and a sliding part connected with the button part, a slide way matched with the sliding part is arranged on a shell of the quick-acting connector male head, the button part is connected with the shell of the quick-acting connector male head through an elastic part, a pushing part is arranged on the opposite side of the button part on the shell of the quick-acting connector male head and connected in a pushing part groove formed in the shell of the quick-acting connector male head through the elastic part, the pushing part is of a dumbbell structure, namely the cross sectional area of the upper section and the middle section of the pushing part is larger than that of the middle section, a through hole matched with the shape of the upper section and the shape of the middle section of a dumbbell is formed in the sliding part on the side, after the quick-acting connector female head extends into the quick-acting connector male head, the quick-acting connector female head extrudes; when the quick connector needs to be taken out, the button part is pushed, the lower section of the pushing part falls into the sliding part, and the upper section of the pushing part extrudes the female head of the quick connector;
female head of quick-operation joint includes female first shell, and female first shell links to each other with clean mechanism output through its outside screw thread, and the tip of spiro union portion is flange portion, and flange portion can touch with the promotion portion of the public head of quick-operation joint, and the flange portion top is equipped with the sealing washer for can stretching into in the portion of stretching into of the public head of quick-operation joint in stretching into, the inside same spring core that is equipped with of female first shell.
Through the use of the quick coupling, the plug-in of the expired air sampler and the charging maintenance device can be quickly completed, and meanwhile, the air path tightness in the cleaning process is also ensured.
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 (8)
1. The utility model provides a hand-held type expired air sampler is from maintenance device that charges which characterized in that, includes the base and sets up charging mechanism, clean mechanism and the control mechanism in the base, charging mechanism is used for charging for hand-held type expired air sampler, clean mechanism is used for carrying out cleaning treatment for the inside expiratory tube way of hand-held type expired air sampler, control mechanism is used for controlling the running state of clean mechanism, the output of clean mechanism stretches out in the top of base, the output of charging mechanism stretches out in the top of base.
2. The self-charging maintenance device of a hand-held exhaled breath sampler of claim 1, wherein the cleaning mechanism comprises a dry line comprising an input end to atmosphere and an output end to an internal exhaled breath line of the hand-held exhaled breath sampler, with an external circulation air pump therebetween.
3. The self-charging maintenance device of the hand-held exhaled breath sampler of claim 2, further comprising an air purification tube connected to the drying tube.
4. The self-charging maintenance device of the hand-held exhaled breath sampler according to claim 2 or 3, wherein the pipeline connecting the external circulation air pump with the input end and/or the output end is provided with an electromagnetic valve, and the input end of the electromagnetic valve is further communicated with a clean air source.
5. The self-charging maintenance device of a hand-held exhaled breath sampler of claim 1, wherein said charging mechanism comprises a charging adapter plate, on which a charging adapter connected to the exhaled breath sampler is placed, the adapter being connected to the base by mechanical means. And a plurality of binding posts are arranged on the top of the bracket.
6. The self-charging maintenance device of the handheld exhaled breath sampler of claim 1 or 5, wherein the charging mechanism is connected to the controller, the charging module of the controller comprises a voltage detection module for detecting the voltage value of the battery at two ends of the battery of the handheld exhaled breath sampler, a current detection module for detecting the current value of the battery, an overvoltage protection module for controlling the charging progress according to the voltage value of the battery, an overcurrent protection module for controlling the charging progress according to the current value of the battery, and a surge protection module for controlling the charging progress according to the load voltage value, and the controller is further connected to a display device capable of viewing the charging progress of the charging battery being charged by a user.
7. The self-charging maintenance device of the hand-held exhaled breath sampler according to claim 1, wherein an exhaled breath pipeline is arranged inside the hand-held exhaled breath sampler, a quick coupling male head is arranged at the bottom end of the exhaled breath pipeline, a quick coupling female head matched with the output end of the drying pipeline is arranged at the output end of the drying pipeline, when the quick coupling male head is completely butted with the quick coupling female head, the gas path of the gas collection mechanism part is through, and when the quick coupling male head is separated from the quick coupling female head, the gas path of the gas collection mechanism part is closed.
8. The self-charging maintenance device of the hand-held exhaled breath sampler according to claim 7, wherein the quick coupling male comprises a male housing, the male housing is screwed with the main housing of the hand-held exhaled breath sampler through external threads, a spring core is arranged in the male housing, the spring core comprises a spring and a valve core connected with the spring, the spring is fixed in the male housing, the valve core can freely move up and down in the male housing, a plurality of through holes for ventilation are arranged on the side of the valve core connected with the spring,
the spring is in contact with the inner wall of the male shell at the non-opening section under the natural condition of not being subjected to external force, the whole body is sealed, and under the condition of being subjected to certain external force, the spring is compressed, and the through hole section and the upper and lower pipelines form a passage to finish the transmission of gas;
the quick-acting connector male head further comprises a button part and a sliding part connected with the button part, a slide way matched with the sliding part is arranged on a shell of the quick-acting connector male head, the button part is connected with the shell of the quick-acting connector male head through an elastic part, a pushing part is arranged on the opposite side of the button part on the shell of the quick-acting connector male head and connected in a pushing part groove formed in the shell of the quick-acting connector male head through the elastic part, the pushing part is of a dumbbell structure, namely the cross sectional area of the upper section and the middle section of the pushing part is larger than that of the middle section, a through hole matched with the shape of the upper section and the shape of the middle section of a dumbbell is formed in the sliding part on the side, after the quick-acting connector female head extends into the quick-acting connector male head, the quick-acting connector female head extrudes; when the quick connector needs to be taken out, the button part is pushed, the lower section of the pushing part falls into the sliding part, and the upper section of the pushing part extrudes the female head of the quick connector;
female head of quick-operation joint includes female first shell, and female first shell links to each other with clean mechanism output through its outside screw thread, and the tip of spiro union portion is flange portion, and flange portion can touch with the promotion portion of the public head of quick-operation joint, and the flange portion top is equipped with the sealing washer for can stretching into in the portion of stretching into of the public head of quick-operation joint in stretching into, the inside same spring core that is equipped with of female first shell.
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|---|---|---|---|
| CN202011615206.7A CN112773409B (en) | 2020-12-30 | 2020-12-30 | Self-charging maintenance device of handheld exhaled breath sampler |
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| CN202011615206.7A CN112773409B (en) | 2020-12-30 | 2020-12-30 | Self-charging maintenance device of handheld exhaled breath sampler |
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| CN112773409B CN112773409B (en) | 2023-06-16 |
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| US20150311735A1 (en) * | 2014-04-25 | 2015-10-29 | Rohm Co., Ltd. | Charging circuit, power management circuit, and electronic device using the same |
| US20150366538A1 (en) * | 2014-06-18 | 2015-12-24 | Analogic Corporation | Hand held ultrasound imaging apparatus with portable carrier charger |
| WO2019074922A1 (en) * | 2017-10-10 | 2019-04-18 | Endo Medical, Inc. | Breath analysis device |
| CN208464033U (en) * | 2017-12-11 | 2019-02-05 | 肖华 | A kind of inspectoscope for otolaryngological department |
| CA2997070A1 (en) * | 2018-03-02 | 2019-09-02 | Picomole Inc. | Alveolar breath collection apparatus |
| CN209547996U (en) * | 2018-10-25 | 2019-10-29 | 潍坊华鼎电子技术有限公司 | A kind of X-ray machine exposure handbrake |
| CN111671472A (en) * | 2020-07-01 | 2020-09-18 | 深圳市步锐生物科技有限公司 | Handheld expired air collecting device |
| CN111772681A (en) * | 2020-07-01 | 2020-10-16 | 深圳市步锐生物科技有限公司 | Cleaning and back-blowing mechanism of handheld expired air collecting device |
| CN112128493A (en) * | 2020-09-18 | 2020-12-25 | 山东航天电子技术研究所 | Steel ball locking quick joint |
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