CN102266630B - Breathing machine gas proportion control method and device - Google Patents
Breathing machine gas proportion control method and device Download PDFInfo
- Publication number
- CN102266630B CN102266630B CN201010620699.3A CN201010620699A CN102266630B CN 102266630 B CN102266630 B CN 102266630B CN 201010620699 A CN201010620699 A CN 201010620699A CN 102266630 B CN102266630 B CN 102266630B
- Authority
- CN
- China
- Prior art keywords
- oxygen
- oxygen concentration
- concentration value
- valve
- proportion
- 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.)
- Active
Links
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
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/12—Preparation of respiratory gases or vapours by mixing different gases
-
- 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
- A61M16/20—Valves specially adapted to medical respiratory devices
- A61M16/201—Controlled valves
- A61M16/202—Controlled valves electrically actuated
- A61M16/203—Proportional
-
- 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
- A61M2202/00—Special media to be introduced, removed or treated
- A61M2202/02—Gases
- A61M2202/0208—Oxygen
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)
- Respiratory Apparatuses And Protective Means (AREA)
- Flow Control (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention provides a breathing machine gas proportion control method and device. The method comprises the following steps: a. acquiring the relationship between the opening and flow rate of an air proportioning valve and an oxygen proportioning valve of the breathing machine; b. controlling the air proportioning valve and the oxygen proportioning valve according to the relationship between the opening and flow rate and the preset oxygen concentration; and c. finely adjusting the air proportioning valve and the oxygen proportioning valve according to current oxygen concentration and the preset oxygen concentration. The control device comprises an acquisition module, a control module and a fine adjustment module, wherein the acquisition module is used for acquiring the relationship between the opening and flow rate of the air proportioning valve and the oxygen proportioning valve of the breathing machine; the control module is used for controlling the air proportioning valve and the oxygen proportioning valve; and the fine adjustment module is used for finely adjusting the air proportioning valve and the oxygen proportioning valve. Compared with the prior art, the invention can monitor the oxygen concentration of the gas in real time, carry out dual-closed-loop control on the oxygen concentration, enables the given oxygen concentration in the gas to be consistent with the set oxygen concentration, and enhances the oxygen mixing control precision.
Description
Technical field
The invention belongs to field of medical, relate to a kind of breathing machine gas proportion control method and device.
Background technology
Respirator need to be according to user's needs, provide a kind of oxygen concentration adjustable air, the Pneumatic electrical control respirator of realizing for two proportioning valves, if need to mix oxygen, need to open two proportioning valves, and the aperture of two proportioning valves time big or small and that open directly affects the oxygen concentration of output gas simultaneously.Because aperture and the current curve of proportioning valve changed by bleed pressure, the gas oxygen concentration that adopts two proportioning valve ventilations to provide is controlled and will be offset, in addition, the minimum flow velocity that proportioning valve can provide is to be determined by the self-characteristic of proportioning valve, when proportioning valve can not provide the flow velocity needing, adopt pair oxygen concentration of the gas that proportioning valves ventilation provides to control and will be offset.In prior art, the general oxygen concentration sensor that adopts of oxygen concentration monitoring is monitored, and oxygen concentration sensor can drift about, and needs often sensor to be calibrated, otherwise deviation will occur in monitoring, has affected clinical result of use, even misleads operator.
In prior art, for above-mentioned oxygen concentration, there is the problem of skew, not yet provide effective solution.
Summary of the invention
Object of the present invention proposes a kind of breathing machine gas proportion control method and device, the oxygen concentration of the gas providing for Real-Time Monitoring, oxygen concentration is carried out to two closed loop controls, make the gas oxygen concentration that provides consistent with the oxygen concentration of setting, improved the precision of mixed oxygen control.
To achieve these goals, the present invention realizes by the following technical solutions:
A breathing machine gas proportion control method, comprising: a: AIR Proportional valve and the aperture of oxygen proportion valve and the relation of flow velocity of obtaining described respirator; B: control described AIR Proportional valve and oxygen proportion valve according to the relation of described aperture and flow velocity and default oxygen concentration value; And c: finely tune described AIR Proportional valve and oxygen proportion valve according to current oxygen concentration value and described default oxygen concentration value.
Further, described step a comprises: AIR Proportional valve and oxygen proportion valve described in verification, and to determine aperture and the flow velocity relation of described AIR Proportional valve and oxygen proportion valve.
Further, before execution step b, described control method also comprises: more current oxygen concentration value and default oxygen concentration value, and judge whether to mix oxygen and control, if so, perform step b.
Further, described in, judge whether to mix oxygen and control and comprise: air capacity and the amount of oxygen of described respirator Real-Time Monitoring output, and calculate described current oxygen concentration value.
Further, the current oxygen concentration value of described calculating comprises: according to following formula, calculate: current oxygen concentration value=[(air capacity * k)+amount of oxygen)]/(air capacity+amount of oxygen), wherein k is content of oxygen in air ratio.
Further, before execution step c, described control method also comprises, judges that whether the current controlled state of described respirator is volume control, if so, performs step c.
Further, after execution step c, described control method also comprises: according to oxygen concentration value and the described default oxygen concentration value after fine setting, judge whether up to standard described mixed oxygen is controlled, if so, described gas ratio is controlled and is finished, if not, described in coarse adjustment, AIR Proportional valve and oxygen proportion valve, then return to step c.
According to another aspect of the present invention, a kind of breathing machine gas proportion control device, comprising: acquisition module: for obtaining the AIR Proportional valve of described respirator and the aperture flow velocity relation of oxygen proportion valve; Control module: for controlling described AIR Proportional valve and oxygen proportion valve according to the relation of described aperture and flow velocity and default oxygen concentration value; And fine setting module: for finely tuning described AIR Proportional valve and oxygen proportion valve according to current oxygen concentration value and described default oxygen concentration value.
Further, described acquisition module comprises: correction verification module: AIR Proportional valve and oxygen proportion valve described in verification, and to determine described AIR Proportional valve and the aperture of oxygen proportion valve and the relation of flow velocity.
Further, described control module comprises: the first judge module, for according to described default oxygen concentration value, judges whether to mix oxygen and control.
Further, described the first judge module comprises: monitoring modular, for air capacity and the amount of oxygen of described respirator Real-Time Monitoring output, and calculates current oxygen concentration value; And computing module, for calculating current oxygen concentration value.
Further, described fine setting module comprises: the second judge module, and for judging whether the current controlled state of described respirator is volume control.
Compared with prior art, the invention has the beneficial effects as follows: the oxygen concentration of the gas that this technical scheme provides for Real-Time Monitoring, oxygen concentration is carried out to two closed loop controls, make the gas oxygen concentration that provides consistent with the oxygen concentration of setting, improved the precision of mixed oxygen control.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide the further understanding to type of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the main flow chart according to a kind of breathing machine gas proportion control method of the present invention;
Fig. 2 is according to AIR Proportional valve of the present invention and the aperture of oxygen proportion valve and the curve chart of flow velocity relation;
Fig. 3 is the particular flow sheet according to a kind of breathing machine gas proportion control method of the present invention;
Fig. 4 is according to the structural representation of a kind of breathing machine gas proportion control device of the present invention;
The specific embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
The present invention is directed to oxygen concentration clinical monitoring offset issue can occur, propose, specifically introduce a kind of breathing machine gas proportion control method and device.
Fig. 1 is the main flow chart according to a kind of breathing machine gas proportion control method of the present invention, referring to Fig. 1, a breathing machine gas proportion control method, comprising: a: AIR Proportional valve and the aperture of oxygen proportion valve and the relation of flow velocity of obtaining described respirator; B: control described AIR Proportional valve and oxygen proportion valve according to the relation of described aperture and flow velocity and default oxygen concentration value; And c: finely tune described AIR Proportional valve and oxygen proportion valve according to current oxygen concentration value and described default oxygen concentration value.
Concrete, obtaining the AIR Proportional valve of described respirator and the aperture of oxygen proportion valve and the relation of flow velocity is by the verification of described AIR Proportional valve and oxygen proportion valve is obtained, shown in Figure 2, Fig. 2 is according to AIR Proportional valve of the present invention and the aperture of oxygen proportion valve and the curve chart of flow velocity relation.The AIR Proportional valve of described respirator and the aperture of oxygen proportion valve and the relation of flow velocity as can be seen from Figure 2.Mixing before oxygen controls, first to whether needing mix oxygen control, judging, shown in Figure 3, Fig. 3 is the particular flow sheet according to a kind of breathing machine gas proportion control method of the present invention; And the standard of above-mentioned judgement is default oxygen concentration value, when the result of judgement is when being, then carry out the judgement of volume control, if pressure is controlled, enter real-time adjusting, if volume control, finely tunes the air in this cycle and oxygen, after fine setting, the situation up to standard that described mixed oxygen is controlled judges, when not meeting default oxygen concentration value, more described AIR Proportional valve and oxygen proportion valve are carried out to coarse adjustment, and get back to the step before fine setting.
Fig. 4 is the breathing machine gas proportion control device of realizing said method, shown in Figure 4, and a kind of breathing machine gas proportion control device, comprising: acquisition module 401: for obtaining the AIR Proportional valve of described respirator and the aperture flow velocity relation of oxygen proportion valve; Control module 403: for controlling described AIR Proportional valve and oxygen proportion valve according to the relation of described aperture and flow velocity and default oxygen concentration value; And fine setting module 405: for finely tuning described AIR Proportional valve and oxygen proportion valve according to current oxygen concentration value and described default oxygen concentration value.
Further, described acquisition module comprises: correction verification module (not shown): AIR Proportional valve and oxygen proportion valve described in verification, and to determine described AIR Proportional valve and the aperture of oxygen proportion valve and the relation of flow velocity.
Further, described control module comprises: the first judge module (not shown), for according to described default oxygen concentration value, judges whether to mix oxygen and control.
Further, described the first judge module comprises: monitoring modular (not shown), for air capacity and the amount of oxygen of described respirator Real-Time Monitoring output, and calculates current oxygen concentration value; And computing module, for calculating current oxygen concentration value.
Further, described fine setting module comprises: the second judge module (not shown), and for judging whether the current controlled state of described respirator is volume control.
By above-described embodiment, can find out the oxygen concentration of the gas that technical solution of the present invention provides for Real-Time Monitoring, oxygen concentration is carried out to two closed loop controls, make the gas oxygen concentration that provides consistent with the oxygen concentration of setting, improved the precision of mixed oxygen control.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. a breathing machine gas proportion control method, is characterized in that, comprising:
A: AIR Proportional valve and the aperture of oxygen proportion valve and the relation of flow velocity of obtaining described respirator;
B: control described AIR Proportional valve and oxygen proportion valve according to the relation of described aperture and flow velocity and default oxygen concentration value; And
C: according to current oxygen concentration value and described default oxygen concentration value, finely tune described AIR Proportional valve and oxygen proportion valve,
Before execution step b, described control method also comprises: more current oxygen concentration value and default oxygen concentration value, and judge whether to mix oxygen and control, if so, perform step b,
Describedly judge whether to mix oxygen and control and comprise: air capacity and the amount of oxygen of described respirator Real-Time Monitoring output, and calculate described current oxygen concentration value,
The current oxygen concentration value of described calculating comprises: according to following formula, calculate: current oxygen concentration value=[(air capacity * k)+amount of oxygen)]/(air capacity+amount of oxygen), wherein k is content of oxygen in air ratio.
2. breathing machine gas proportion control method according to claim 1, is characterized in that, described step a comprises:
AIR Proportional valve and oxygen proportion valve described in verification, to determine aperture and the flow velocity relation of described AIR Proportional valve and oxygen proportion valve.
3. breathing machine gas proportion control method according to claim 1, is characterized in that,
Before execution step c, described control method also comprises, judges that whether the current controlled state of described respirator is volume control, if so, performs step c.
4. breathing machine gas proportion control method according to claim 3, is characterized in that,
After execution step c, described control method also comprises: according to oxygen concentration value and the described default oxygen concentration value after fine setting, judge whether up to standard described mixed oxygen is controlled, if so, described gas ratio is controlled and is finished, if not, described in coarse adjustment, AIR Proportional valve and oxygen proportion valve, then return to step c.
5. a breathing machine gas proportion control device, is characterized in that, comprising:
Acquisition module: for obtaining the AIR Proportional valve of described respirator and the aperture flow velocity relation of oxygen proportion valve;
Control module: for controlling described AIR Proportional valve and oxygen proportion valve according to the relation of described aperture and flow velocity and default oxygen concentration value; And
Fine setting module: for finely tuning described AIR Proportional valve and oxygen proportion valve according to current oxygen concentration value and described default oxygen concentration value,
Described control module comprises: the first judge module, and for according to described default oxygen concentration value, judge whether to mix oxygen and control,
Described the first judge module comprises:
Monitoring modular, for air capacity and the amount of oxygen of described respirator Real-Time Monitoring output, and calculates current oxygen concentration value; And
Computing module, for calculating current oxygen concentration value,
The current oxygen concentration value of described calculating comprises: according to following formula, calculate: current oxygen concentration value=[(air capacity * k)+amount of oxygen)]/(air capacity+amount of oxygen), wherein k is content of oxygen in air ratio.
6. breathing machine gas proportion control device according to claim 5, is characterized in that, described acquisition module comprises:
Correction verification module: AIR Proportional valve and oxygen proportion valve described in verification, to determine described AIR Proportional valve and the aperture of oxygen proportion valve and the relation of flow velocity.
7. breathing machine gas proportion control device according to claim 5, is characterized in that, described fine setting module comprises:
The second judge module, for judging whether the current controlled state of described respirator is volume control.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010620699.3A CN102266630B (en) | 2010-12-31 | 2010-12-31 | Breathing machine gas proportion control method and device |
| PCT/CN2011/084698 WO2012089092A1 (en) | 2010-12-31 | 2011-12-26 | Method and device for controlling gas ratio of breathing machine |
| BR112012032964A BR112012032964A2 (en) | 2010-12-31 | 2011-12-26 | method and device for breathing machine gas ratio control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010620699.3A CN102266630B (en) | 2010-12-31 | 2010-12-31 | Breathing machine gas proportion control method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102266630A CN102266630A (en) | 2011-12-07 |
| CN102266630B true CN102266630B (en) | 2014-10-01 |
Family
ID=45049207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010620699.3A Active CN102266630B (en) | 2010-12-31 | 2010-12-31 | Breathing machine gas proportion control method and device |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN102266630B (en) |
| BR (1) | BR112012032964A2 (en) |
| WO (1) | WO2012089092A1 (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102266630B (en) * | 2010-12-31 | 2014-10-01 | 北京谊安医疗系统股份有限公司 | Breathing machine gas proportion control method and device |
| CA2869471C (en) | 2012-04-05 | 2021-07-20 | Fisher & Paykel Healthcare Limited | Respiratory assistance apparatus |
| CN103893891B (en) * | 2012-12-26 | 2016-03-02 | 北京谊安医疗系统股份有限公司 | A kind of method of calibration of respirator non-linear ratio valve |
| CN104874057A (en) * | 2014-02-28 | 2015-09-02 | 北京谊安医疗系统股份有限公司 | Respirator fault detection method and system |
| EP4235120A3 (en) | 2014-05-27 | 2023-10-04 | Fisher & Paykel Healthcare Limited | Gases mixing and measuring for a medical device |
| CN104834326B (en) * | 2015-04-01 | 2017-12-19 | 深圳市科曼医疗设备有限公司 | Lung ventilator oxygen concentration control method, device and system |
| CN105563349A (en) * | 2016-01-27 | 2016-05-11 | 北京雷蒙赛博机电技术有限公司 | Abrasive concentration control system for front mixed abrasive water jet equipment |
| CN105963837B (en) * | 2016-06-08 | 2019-02-22 | 湖南明康中锦医疗科技发展有限公司 | A kind of ventilator and control method of the mixing control of sky oxygen |
| CN107152551B (en) * | 2017-05-11 | 2019-04-05 | 广东卓信环境科技股份有限公司 | A kind of Regulation Control method and Regulation Control device |
| CN110874106B (en) * | 2018-08-31 | 2022-09-02 | 伊利诺斯工具制品有限公司 | Gas control system and method for reflow oven |
| CN109443776A (en) * | 2018-10-30 | 2019-03-08 | 中船动力研究院有限公司 | A kind of adjustment of gas concentration method |
| CN110652702B (en) * | 2019-09-30 | 2021-07-20 | 深圳市俄中博医医疗科技有限公司 | Intermittent high-low oxygen training method, device and storage medium |
| CN111366692B (en) * | 2020-04-16 | 2022-11-22 | 北方工业大学 | Gas environment parameter monitoring system and method |
| CN111450377A (en) * | 2020-04-29 | 2020-07-28 | 北京海辉科技有限公司 | Manual humidifying air-oxygen mixing system |
| CN113244496A (en) * | 2021-04-26 | 2021-08-13 | 泰州市久信医疗科技有限公司 | Method for controlling output oxygen concentration of respirator and method for calculating contribution value of input gas source of respirator to output oxygen concentration |
| CN114209955B (en) * | 2021-11-16 | 2023-07-18 | 北京谊安医疗系统股份有限公司 | Proportional valve starting-up self-checking method |
| CN114904115B (en) * | 2022-06-01 | 2023-05-23 | 广州和普乐健康科技有限公司 | Automatic control method and equipment for oxygen concentration of respiratory support equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88103592A (en) * | 1987-05-01 | 1988-11-23 | 富士胶片公司 | Be used to measure the method and apparatus of fluid |
| CN101111277A (en) * | 2004-12-01 | 2008-01-23 | 卡尔·赖纳有限责任公司 | Method for providing gas mixtures for respirators and method for carrying out said method |
| CN201337736Y (en) * | 2009-01-20 | 2009-11-04 | 江苏凯泰医疗设备有限公司 | Oxygen concentration control device of intelligent breathing machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5090058B2 (en) * | 2007-05-18 | 2012-12-05 | パーパス株式会社 | Combustion device, calculation method and calculation program for fuel consumption |
| CN102266630B (en) * | 2010-12-31 | 2014-10-01 | 北京谊安医疗系统股份有限公司 | Breathing machine gas proportion control method and device |
-
2010
- 2010-12-31 CN CN201010620699.3A patent/CN102266630B/en active Active
-
2011
- 2011-12-26 WO PCT/CN2011/084698 patent/WO2012089092A1/en active Application Filing
- 2011-12-26 BR BR112012032964A patent/BR112012032964A2/en not_active Application Discontinuation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88103592A (en) * | 1987-05-01 | 1988-11-23 | 富士胶片公司 | Be used to measure the method and apparatus of fluid |
| CN101111277A (en) * | 2004-12-01 | 2008-01-23 | 卡尔·赖纳有限责任公司 | Method for providing gas mixtures for respirators and method for carrying out said method |
| CN201337736Y (en) * | 2009-01-20 | 2009-11-04 | 江苏凯泰医疗设备有限公司 | Oxygen concentration control device of intelligent breathing machine |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2008-286478A 2008.11.27 |
Also Published As
| Publication number | Publication date |
|---|---|
| BR112012032964A2 (en) | 2016-11-22 |
| CN102266630A (en) | 2011-12-07 |
| WO2012089092A1 (en) | 2012-07-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102266630B (en) | Breathing machine gas proportion control method and device | |
| US20090205661A1 (en) | Systems and methods for extended volume range ventilation | |
| CN111888599B (en) | Pressure maintaining device of breathing machine | |
| CN202263271U (en) | Respiratory pressure fuzzy control type respirator | |
| CN103028170A (en) | Breathing pressure fuzzy control type respirator and breathing pressure fuzzy control method | |
| WO2007064986A3 (en) | Gas blender with auxiliary mixed gas outlet | |
| CN108066862A (en) | A kind of lung ventilator exports oxygen concentration control method | |
| CN104841055A (en) | Control method, device and system for breathing machine PEEP valve | |
| CN103055397B (en) | The control method of respirator oxygen concentration and device | |
| RU2013116800A (en) | VENTILATION SYSTEM | |
| CN102114288B (en) | Tidal volume control method | |
| CN102371017B (en) | Breathing machine positive end-expiratory pressure control system, circuit and control method thereof | |
| CN102397609A (en) | Volume-guaranteed pressure-limited ventilation method for anesthesia machine and respirator | |
| CN204840571U (en) | End -expiratory positive pressure control system | |
| CN104548296A (en) | Air channel control device of breathing machine | |
| CN104874059A (en) | Respirator pressure control method and system | |
| CN102397613A (en) | Method for controlling pressure of anesthesia machine and breathing machine pressure control by using expiration flow sensor | |
| CN105013057B (en) | A kind of end-expiratory positive pressure control system and method | |
| CN103893888A (en) | Pulse width modulation type method for controlling oxygen concentration in anesthesia machine or breathing machine | |
| CN103699160B (en) | The quantitative level pressure feeding mechanism of a kind of high-precision gas | |
| CN109771767A (en) | A kind of pneumatic spare flowmeter control system of Anesthesia machine | |
| CN105944197B (en) | The open-loop control method and system of lung ventilator wind turbine | |
| CN104069575A (en) | Small tidal volume ventilation control method of anesthesia machine or respirator | |
| CN204073003U (en) | A kind of Pneumatic electrical control aerating system | |
| CN113244496A (en) | Method for controlling output oxygen concentration of respirator and method for calculating contribution value of input gas source of respirator to output oxygen concentration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |