CN108421142A - Multifunction oxygen inhalation head-shield - Google Patents
Multifunction oxygen inhalation head-shield Download PDFInfo
- Publication number
- CN108421142A CN108421142A CN201810481258.6A CN201810481258A CN108421142A CN 108421142 A CN108421142 A CN 108421142A CN 201810481258 A CN201810481258 A CN 201810481258A CN 108421142 A CN108421142 A CN 108421142A
- Authority
- CN
- China
- Prior art keywords
- oxygen
- head
- shield
- ontology
- inhalation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 141
- 239000001301 oxygen Substances 0.000 title claims abstract description 141
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 133
- 239000000523 sample Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims description 6
- 229920006351 engineering plastic Polymers 0.000 claims description 4
- 231100000252 nontoxic Toxicity 0.000 claims description 4
- 230000003000 nontoxic effect Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 206010028748 Nasal obstruction Diseases 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000002664 inhalation therapy Methods 0.000 description 2
- 150000002926 oxygen Chemical class 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- 230000036387 respiratory rate Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000006199 nebulizer Substances 0.000 description 1
- 238000002640 oxygen therapy Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000028327 secretion Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/06—Respiratory or anaesthetic masks
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/1005—Preparation of respiratory gases or vapours with O2 features or with parameter measurement
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/1005—Preparation of respiratory gases or vapours with O2 features or with parameter measurement
- A61M2016/102—Measuring a parameter of the content of the delivered gas
- A61M2016/1025—Measuring a parameter of the content of the delivered gas the O2 concentration
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/18—General characteristics of the apparatus with alarm
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
- A61M2205/3334—Measuring or controlling the flow rate
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2210/00—Anatomical parts of the body
- A61M2210/06—Head
Landscapes
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
Abstract
The invention belongs to medical assistant product technical fields, are related to multifunction oxygen inhalation head-shield, including head-shield ontology, it is characterised in that：The head-shield ontology is equipped with oxygen jack, and the oxygen jack is connected by the oxygen output of oxygen hose and oxygen humidification bottle, and flow controller is housed on oxygen hose；Liner is housed, and there are gaps with liner for head-shield ontology on the inside of the head-shield ontology, the position positioned at nose between head-shield ontology and liner is equipped with oxygen concentration probe, and the oxygen concentration probe is connect with oxygen concentration monitor signal；The present invention inside head-shield by being arranged oxygen concentration detection probe to patients accepting oxygen inhalation density real-time monitoring, and oxygen humidification bottle oxygen output flow is controlled by flow controller, the supply of head-shield internal oxygen is adjusted, adjusts the oxygen concentration in head-shield in real time, realizes precisely treatment.
Description
Technical field
The present invention relates to a kind of multifunction oxygen inhalation head-shields, belong to medical assistant product technical field.
Background technology
The patient of many anoxics of Hospitals at Present needs oxygen inhalation therapy, and oxygen inhalation therapy is broadly divided into hyperbaric oxygen treatment and low
Oxygen therapy, hyperbaric oxygen treatment is pressed generally Hyperbaric oxygen chamber to be used to treat, low oxygen treatment generally uses nose conduit or nasal obstruction
Oxygen uptake is realized.When using nose conduit or nasal obstruction oxygen uptake, there is patient that can be reluctant to wear because foreign body sensation is strong, patient's meeting also
Because airway secretions are more, easily air flue is blocked and inconvenient wearing.When using nose conduit or nasal obstruction oxygen uptake, oxygen concentration is to pass through
What flow rate conversion obtained, different patients can cause practical oxygen intake concentration to generate due to the difference of respiratory rate and respiratory capacity
Deviation；Even same patient also can in different times, different state different respiratory rate and respiratory capacity occurs, finally
Cause patient's oxygen intake concentration to fluctuate up and down, influences therapeutic effect.
Existing nose conduit or nasal obstruction oxygen inhalation mode do not consider this oxygen concentration under different patients, different conditions
Fluctuation, practical concentration of oxygen inhalation and state of an illness demand even can be more than rational oxygen concentration range under extreme case there are deviation,
It causes danger.
Invention content
In response to the problems existing in the prior art, the purpose of the present invention is to provide a kind of multifunction oxygen inhalation head-shields, by head
The internal setting oxygen concentration detection probe of cover controls oxygen humidification to patients accepting oxygen inhalation density real-time monitoring, and by flow controller
Bottle oxygen output flow, adjusts the supply of head-shield internal oxygen, adjusts the oxygen concentration in head-shield in real time, realizes precisely treatment.
To realize the above technical purpose, the technical scheme is that：Multifunction oxygen inhalation head-shield, including head-shield ontology,
It is characterized in that：The head-shield ontology is equipped with oxygen jack, the oxygen that the oxygen jack passes through oxygen hose and oxygen humidification bottle
Gas output end connects, and flow controller is housed on oxygen hose；Liner is housed on the inside of the head-shield ontology, and head-shield ontology with
There are gaps for liner, and the position positioned at nose between head-shield ontology and liner is equipped with oxygen concentration probe, the oxygen concentration
Probe is connect with oxygen concentration monitor signal.
Further, the oxygen input terminal of the oxygen humidification bottle passes through oxygen socket and medical equipment band connection.
Further, the radiator grille of the head-shield ontology is made of transparent non-toxic high molecular material, and rear mask is by engineering plastic
Material composition.
Further, the thickness of the head-shield ontology is 1.8mm ~ 2.2mm.
Further, the outer diameter of the head-shield ontology is 38cm ~ 42cm.
Further, the gap between the head-shield ontology and liner is 2cm ~ 3cm.
Further, it is additionally provided with the Neulized inhalation jack being connect with atomizer on the head-shield ontology, and head-shield this position
In ear location hole is listened equipped with sound.
Further, a diameter of 5mm ~ 7mm of the oxygen jack and Neulized inhalation jack.
Further, the sound-light alarm for being integrated with microprocessor in the oxygen concentration probe and being connect with microprocessor
Device, the microprocessor control real-time display oxygen concentration on oxygen concentration display.
Compared with prior art, the present invention has the following advantages：
1）The present invention monitors oxygen concentration by the way that oxygen concentration detection probe is arranged inside head-shield in real time, passes through simultaneously
Flow controller controls the output flow of oxygen humidification bottle, adjusts the supply of head-shield internal oxygen, and then adjust in head-shield in real time
Oxygen concentration realizes precisely treatment；
2）The oxygen inhalation mode that the present invention provides oxygen head box is very convenient, and patient's comfortable wearing；
3）The present invention can also connect atomizer and carry out nebulizer administration treatment.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the overlooking structure diagram of head-shield ontology of the present invention.
Fig. 3 is the schematic cross-sectional view of head-shield ontology of the present invention.
Fig. 4 is the side structure schematic view of head-shield ontology of the present invention.
Reference sign：1-medical device belt；2-oxygen sockets；3-oxygen humidification bottles；4-oxygen hoses；
5-flow controllers；6-head-shield ontologies；7-oxygen concentration probes；8-oxygen concentration displays；9-oxygen jacks；10—
Neulized inhalation jack；11-liners；12-sound listen hole.
Specific implementation mode
With reference to specific drawings and examples, the invention will be further described.
As shown in Figure 1, multifunction oxygen inhalation head-shield, including head-shield ontology 6, it is characterised in that：The head-shield ontology 6 is equipped with
Oxygen jack 9, the oxygen jack 9 is connect by oxygen hose 4 with the oxygen output of oxygen humidification bottle 3, and oxygen hose 4
Upper that flow controller 5 is housed, the oxygen input terminal of the oxygen humidification bottle 3 is connect by oxygen socket 2 with medical device belt 1；
6 inside of the head-shield ontology is equipped with liner 11, and there are gaps with liner 11 for head-shield ontology 6, between head-shield ontology 6 and liner 11
Oxygen concentration probe 7 is installed positioned at the position of nose, the oxygen concentration probe 7 is connect with 8 signal of oxygen concentration display,
The audible-visual annunciator for being integrated with microprocessor in the oxygen concentration probe 7 and being connect with microprocessor, the microprocessor control
Real-time display oxygen concentration on oxygen concentration display 8 processed.
As shown in Fig. 2, the radiator grille of the head-shield ontology 6 is made of transparent non-toxic high molecular material, rear mask is by engineering
Plastics form, and the thickness of the head-shield ontology 6 is 1.8mm ~ 2.2mm, 11 selection activity textile material of the liner, the head-shield
Gap between ontology 6 and liner 11 is 2cm ~ 3cm, and the outer diameter of the head-shield ontology 6 is 38cm ~ 42cm.
As shown in Figure 3 and Figure 4, the Neulized inhalation jack 10 being connect with atomizer, and head are additionally provided on the head-shield ontology 6
Cover body 6 is located at ear location and listens hole 12 equipped with sound, and a diameter of 5mm of the oxygen jack 9 and Neulized inhalation jack 10 ~
7mm。
The embodiment of the present invention is made the rear mask of head-shield ontology 6 of the engineering plastics of about 2 millimeters of thickness, and radiator grille uses
The transparent non-toxic high molecular material that about 2 millimeters of thickness makes, about 40 centimetres of the outer diameter of head-shield ontology 6, liner 11 and head-shield ontology 6
2-3 centimeter intervals are kept, the position installation oxygen concentration probe 7 of nose, this reality are approximately located i between liner 11 and head-shield ontology 6
It applies oxygen concentration probe 7 in example and uses Beijing Zhuo An pocket cable type oxygen detection alarm probes, model CY30-S, in head
The oxygen jack 9 of two about 6 millimeters of diameters is opened at the top of cover body 6 and Neulized inhalation jack 10, oxygen jack 9 pass through oxygen hose
4 connection oxygen humidification bottles 3.
The present invention workflow be：Medical oxygen in medical device belt 1（Concentration 99.5%, 0.2MPa）By oxygen
After the decompression of humidification bottle 3, humidifying, enter 6 He of head-shield ontology through oxygen hose 4, and by the oxygen jack 9 at 6 top of head-shield ontology
Then the gap of liner 11 is uniformly diffused into inside head-shield ontology 6, head-shield ontology 6 wraps up liner 11, and liner 11 is slightly shorter than head
Cover body 6, in the incomplete enclosure space that head-shield ontology 6 is formed, extraneous air can also pass through in head-shield ontology 6, medical
Oxygen（Concentration 99.5%）It is mixed with extraneous air, generates new oxygen concentration, this oxygen concentration is only patient and really inhales
Oxygen concentration, the oxygen concentration probe 7 for being mounted on 6 nose shape of head-shield ontology monitor the concentration of oxygen inhalation of patient in real time, and by oxygen
Concentration real-time display is transmitted to microprocessor in real time on oxygen concentration display 8, and by detection data, and doctor can be according to patient
The state of an illness set best concentration of oxygen inhalation range, such as set oxygen concentration 26% ± 2, microprocessor to detection data and setting number
According to being compared, judge whether to be more than that setting range controls audible-visual annunciator and send out sound-light alarm if being more than setting range,
And the display alarm word of oxygen concentration display 8 is controlled, in the regulating valve and oxygen hose 4 at this moment adjusting oxygen humidification bottle 3
Flow controller 5 is finally reached oxygen concentration dynamic equilibrium to adjust oxygen supply amount, realizes that oxygen concentration accurately controls, complete
At accurate treatment；In addition, the Neulized inhalation jack 11 at 6 top of head-shield ontology can also individually connect atomizer and carry out Neulized inhalation
Treatment, it is that patient is facilitated to be exchanged with doctor to listen hole 12 in the sound of 6 ear location of head-shield ontology.
The present invention and its embodiments have been described above, description is not limiting, shown in attached drawing also only
It is one of embodiments of the present invention, practical structures are not limited thereto.All in all if those skilled in the art
It is enlightened by it, without departing from the spirit of the invention, is not inventively designed similar with the technical solution
Frame mode and embodiment, are within the scope of protection of the invention.
Claims (9)
1. multifunction oxygen inhalation head-shield, including head-shield ontology（6）, it is characterised in that：The head-shield ontology（6）It is equipped with oxygen jack
（9）, the oxygen jack（9）Pass through oxygen hose（4）With oxygen humidification bottle（3）Oxygen output connection, and oxygen hose
（4）It is upper that flow controller is housed（5）；The head-shield ontology（6）Inside is equipped with liner（11）, and head-shield ontology（6）With liner
（11）There are gaps, in head-shield ontology（6）With liner（11）Between be located at nose position oxygen concentration probe is installed（7）, institute
State oxygen concentration probe（7）With oxygen concentration display（8）Signal connects.
2. multifunction oxygen inhalation head-shield according to claim 1, it is characterised in that：The oxygen humidification bottle（3）Oxygen it is defeated
Enter end and passes through oxygen socket（2）With medical device belt（1）Connection.
3. multifunction oxygen inhalation head-shield according to claim 1, it is characterised in that：The head-shield ontology（6）Radiator grille by
Transparent non-toxic high molecular material composition, rear mask are made of engineering plastics.
4. multifunction oxygen inhalation head-shield according to claim 1, it is characterised in that：The head-shield ontology（6）Thickness be
1.8mm~2.2mm。
5. multifunction oxygen inhalation head-shield according to claim 1, it is characterised in that：The head-shield ontology（6）Outer diameter be
38cm~42cm。
6. multifunction oxygen inhalation head-shield according to claim 1, it is characterised in that：The head-shield ontology（6）With liner（11）
Between gap be 2cm ~ 3cm.
7. multifunction oxygen inhalation head-shield according to claim 1, it is characterised in that：The head-shield ontology（6）On be additionally provided with
The Neulized inhalation jack of atomizer connection（10）, and head-shield ontology（6）Positioned at ear location hole is listened equipped with sound（12）.
8. multifunction oxygen inhalation head-shield according to claim 7, it is characterised in that：The oxygen jack（9）And Neulized inhalation
Jack（10）A diameter of 5mm ~ 7mm.
9. multifunction oxygen inhalation head-shield according to claim 1, it is characterised in that：The oxygen concentration probe（7）It is interior integrated
The audible-visual annunciator for having microprocessor and being connect with microprocessor, the microprocessor control oxygen concentration display（8）Upper reality
When show oxygen concentration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810481258.6A CN108421142A (en) | 2018-05-18 | 2018-05-18 | Multifunction oxygen inhalation head-shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810481258.6A CN108421142A (en) | 2018-05-18 | 2018-05-18 | Multifunction oxygen inhalation head-shield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108421142A true CN108421142A (en) | 2018-08-21 |
Family
ID=63163661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810481258.6A Pending CN108421142A (en) | 2018-05-18 | 2018-05-18 | Multifunction oxygen inhalation head-shield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108421142A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112229967A (en) * | 2020-11-20 | 2021-01-15 | 南京工业职业技术大学 | Oxygen concentration measurement and remote human body temperature measurement equipment |
| CN116059496A (en) * | 2023-01-05 | 2023-05-05 | 深圳哈维生物医疗科技有限公司 | Method and device for controlling output oxygen concentration of breathing machine and related products |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20030127093A1 (en) * | 2002-01-08 | 2003-07-10 | Maniscalco Annie F. | Oxygen containment enclosure |
| CN201880160U (en) * | 2010-11-06 | 2011-06-29 | 刘新华 | Oxygen inhalation mask |
| CN202590116U (en) * | 2012-04-17 | 2012-12-12 | 宁波圣宇瑞医疗器械有限公司 | Adjustable oxygen concentration mask |
| CN203329153U (en) * | 2013-07-10 | 2013-12-11 | 四川大学华西第二医院 | Intelligent oxygen uptake device |
| CN104274291A (en) * | 2014-10-30 | 2015-01-14 | 王有存 | Emergency hood porous oxygen inhalation and exhaust device for hyperbaric oxygen chamber |
| CN204364594U (en) * | 2014-12-31 | 2015-06-03 | 山东省千佛山医院 | A kind of infant hood type inhalation device |
| CN205759100U (en) * | 2016-05-23 | 2016-12-07 | 新乡市华西卫材有限公司 | A kind of disposable oxygen face mask |
| CN106669003A (en) * | 2015-11-09 | 2017-05-17 | 方定元 | Oxygen machine for internal medicine |
| CN206423613U (en) * | 2017-02-09 | 2017-08-22 | 武汉普优瑞科技有限公司 | A kind of mouth mask for monitoring breathing |
| CN206777616U (en) * | 2016-12-02 | 2017-12-22 | 尚丹 | Multi-functional oxygen therapy blue light head-shield |
| CN208852198U (en) * | 2018-05-18 | 2019-05-14 | 无锡市人民医院 | Multifunction oxygen inhalation head-shield |
-
2018
- 2018-05-18 CN CN201810481258.6A patent/CN108421142A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2123332U (en) * | 1992-06-30 | 1992-12-02 | 北京欧克斯医疗保健品有限公司 | High purification and concentrated oxygen apparatus |
| US20030127093A1 (en) * | 2002-01-08 | 2003-07-10 | Maniscalco Annie F. | Oxygen containment enclosure |
| CN201880160U (en) * | 2010-11-06 | 2011-06-29 | 刘新华 | Oxygen inhalation mask |
| CN202590116U (en) * | 2012-04-17 | 2012-12-12 | 宁波圣宇瑞医疗器械有限公司 | Adjustable oxygen concentration mask |
| CN203329153U (en) * | 2013-07-10 | 2013-12-11 | 四川大学华西第二医院 | Intelligent oxygen uptake device |
| CN104274291A (en) * | 2014-10-30 | 2015-01-14 | 王有存 | Emergency hood porous oxygen inhalation and exhaust device for hyperbaric oxygen chamber |
| CN204364594U (en) * | 2014-12-31 | 2015-06-03 | 山东省千佛山医院 | A kind of infant hood type inhalation device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112229967A (en) * | 2020-11-20 | 2021-01-15 | 南京工业职业技术大学 | Oxygen concentration measurement and remote human body temperature measurement equipment |
| CN116059496A (en) * | 2023-01-05 | 2023-05-05 | 深圳哈维生物医疗科技有限公司 | Method and device for controlling output oxygen concentration of breathing machine and related products |
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