CN112704791B - CPAP mode gas transmission control method of respiratory support equipment and respiratory support equipment - Google Patents
CPAP mode gas transmission control method of respiratory support equipment and respiratory support equipment Download PDFInfo
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- 230000000241 respiratory effect Effects 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000005540 biological transmission Effects 0.000 title claims abstract description 23
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 47
- 238000004088 simulation Methods 0.000 claims description 23
- 210000004072 lung Anatomy 0.000 claims description 17
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- 230000036387 respiratory rate Effects 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 description 6
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- 230000000694 effects Effects 0.000 description 2
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- 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. ventilators; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
-
- 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. ventilators; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
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- 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. ventilators; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/0027—Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter
-
- 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
- A61M2205/3341—Pressure; Flow stabilising pressure or flow to avoid excessive variation
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
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- 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)
- Control Of Positive-Displacement Air Blowers (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention relates to a CPAP mode gas transmission control method of a respiratory support device and the respiratory support device. A method of CPAP mode gas delivery control for a respiratory support apparatus, comprising the steps of: setting a set pressure of the respiratory support apparatus; based on the set pressure, acquiring an optimal PID control parameter of the turbine under the corresponding set pressure in a PID parameter curve; and driving the turbine to output the air flow with the set pressure in the CPAP mode based on the optimal PID control parameter. The CPAP mode gas transmission control method of the respiratory support equipment firstly sets the PID parameter curve in the respiratory support equipment, ensures the stability of the pressure of the output gas flow of the turbine when the turbine is controlled by the PID to work in the CPAP mode, and can ensure that the pressure fluctuation of the output gas flow is limited to 0.5cmH 2 O, is convenient and quick, and has great progress.
Description
Technical Field
The invention relates to the field of respiratory support, in particular to a CPAP mode gas transmission control method of respiratory support equipment and the respiratory support equipment.
Background
In use of the noninvasive respiratory support apparatus, the CPAP (Continuous Positive Airway Pressure ) mode is a very common mode that provides a largely constant pressure output. When the breathing support device is used, the pressure of the breathing support device can be greatly fluctuated when a user inhales and exhales, the pressure can be greatly reduced when the user inhales, and the pressure can be greatly increased when the user exhales. For a respiratory support device without a valve, it is difficult to maintain stable output of pressure in Continuous Positive Airway Pressure (CPAP) mode, in the prior art, the pressure of the respiratory support device is mainly regulated by PID, that is, the power of a turbine is increased and decreased according to the set pressure, so that the pressure is stabilized to the set value. PID is: pro-port, integral, differential abbreviations. As the name implies, the PID control algorithm is a control algorithm combining three links of proportion, integration and differentiation, and is the control algorithm with the most mature technology and the most widely applied technology in a continuous system. The control of the turbine motor by the breathing support equipment in the market at present mostly adopts a PID control mode, and the difference between the target pressure and the current actual pressure is set as a feedback quantity to carry out operation according to the functional relation of proportion, integral and derivative, and the operation result is used for controlling output. Most PID algorithms are calculated by adopting fixed Kp, ki and Kd, and for turbine motor control in the respiratory support equipment, the scheme has larger fluctuation of turbine motor output for different target pressures and different patients, and influences the stability of pressure in the CPAP mode.
Patent document No. cn201710365650.X discloses a ventilator and a pressure control method in Continuous Positive Airway Pressure (CPAP) mode, the ventilator comprising: the flow sensor, the pressure sensor, the processor, the memory and the control program stored on the memory and capable of running on the processor, when the control program is executed by the processor, the following steps are realized: when the breathing machine is in the CPAP mode, a flow curve and a pressure curve of the breathing machine are obtained, an inhalation starting moment P is determined, and the output power of a fan of the breathing machine is increased at the inhalation starting moment P; respectively acquiring the change rates of flow and pressure based on the flow curve and the pressure curve, and intermittently increasing the output power of a fan of the breathing machine when the change rate of flow is continuously more than 0 and the change rate of pressure is less than 0; in a state where the rate of change of the pressure is greater than 0, the output power of the blower of the ventilator is intermittently reduced. The above problems still remain.
Thus, the existing respiratory support equipment has the defect in the field of gas transmission control, and needs to be improved and improved.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a CPAP mode gas transmission control method of a respiratory support apparatus and a respiratory support apparatus, which can ensure the stability of the respiratory support apparatus when outputting a gas flow with a set pressure, and reduce the fluctuation of the output gas flow.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a method of CPAP mode gas delivery control for a respiratory support apparatus, comprising the steps of:
setting a set pressure of the respiratory support apparatus;
based on the set pressure, acquiring an optimal PID control parameter of the turbine under the corresponding set pressure in a PID parameter curve;
and driving the turbine to output the air flow with the set pressure in the CPAP mode based on the optimal PID control parameter.
Preferably, the method for controlling CPAP mode gas transmission of the respiratory support device comprises the following steps:
the breathing simulation device is connected into a gas transmission port of breathing support equipment;
recording optimal PID control parameters of the turbine under the condition of outputting airflows with different set pressures respectively;
and performing data fitting to obtain the PID parameter curve.
Preferably, the breathing simulation device is used for actively simulating the lung.
In the preferred CPAP mode gas transmission control method of the respiratory support device, the turbine is driven based on the optimal PID control parameter, specifically, the turbine is driven by calculating the duty ratio through PID and outputting PWM waves.
Preferably, in the method for controlling CPAP mode gas transmission of the respiratory support device, the calculation formula of the PWM wave is:
PWM(k)＝PWM(k-1)+△PWM；
△PWM＝Kp[e(k)-e(k-1)]+Ki*e(k)+Kd[e(k)-2e(k-1)+e(k-2)]；
wherein Kp represents a proportionality coefficient; ki represents an integral coefficient; kd represents a differential coefficient, preferably 0; e (k) represents the present deviation; e (k-1) represents the last deviation; e (k-2) represents the deviation of the last two times; delta PWM represents this increment; PWM (k) represents the current output duty cycle; PWM (k-1) represents the last output duty cycle.
Preferably, the respiratory support equipment CPAP mode gas transmission control method comprises the following steps of PID control parameters including proportional parameters, integral parameters and differential parameters; PID parameter curves are constructed separately for each parameter, wherein the derivative parameter is preferably 0.
A computer readable medium storing computer executable software which when executed by a computer is capable of performing the respiratory support apparatus CPAP mode gas delivery control method.
A PID parameter detection system for the CPAP mode gas transmission control method of the respiratory support equipment is used for acquiring the PID parameter curve of the respiratory support equipment and comprises the respiratory support equipment and a respiratory simulation device; the air outlet of the breathing support device is sleeved with a breathing pipeline, the other end of the breathing pipeline is connected with a tee joint, and the other two interfaces of the tee joint are respectively connected with the breathing simulation device and a plug; the plug is provided with a leakage hole.
Preferably, in the PID parameter detection system, the respiratory simulation device is configured to actively simulate a lung, and the basic parameters are set as follows: airway resistance 10cmH2O, lung compliance 50ml, respiratory rate 10BPM, inspiration duration 1.0S.
A respiratory support apparatus controls turbine operation using the respiratory support apparatus CPAP mode gas delivery control method.
Compared with the prior art, the CPAP mode gas transmission control method of the respiratory support equipment and the respiratory support equipment provided by the invention have the following beneficial effects:
the CPAP mode gas transmission control method of the respiratory support equipment firstly sets the PID parameter curve in the respiratory support equipment, ensures the stability of the pressure of the output gas flow of the turbine when the turbine is controlled by the PID to work in the CPAP mode, and can ensure that the pressure fluctuation of the output gas flow is limited to 0.5cmH 2 O, is convenient and quick, and has great progress.
Drawings
FIG. 1 is a flow chart of a method for CPAP mode gas delivery control of a respiratory support apparatus provided by the present invention;
FIG. 2 is a graph showing the set pressure setting for the respiratory support apparatus of the present invention at 6cm H 2 Actively simulating a pressure waveform diagram of the lung at the time of O;
FIG. 3 is a graph of the results of fitting of scale parameters provided by the present invention;
fig. 4 is a graph of the geometric results of the differential parameters provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer and more specific, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Those of ordinary skill in the art will realize that the foregoing general description and the following detailed description are illustrative of specific embodiments of the present invention and are not intended to be limiting.
The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process or method that comprises a list of steps does not include only those steps, but may include other steps not expressly listed or inherent to such process or method. Likewise, without further limitations, one or more devices or subsystems beginning with "comprising". A "neither does an element or structure or component have no further limitations, excluding the presence of other devices or other subsystems or other elements or other structures or other components or other devices or other subsystems or other elements or other structures or other components. The appearances of the phrases "in one embodiment," "in another embodiment," and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
Referring to fig. 1, the present invention provides a method for controlling CPAP mode gas transmission of a respiratory support apparatus, comprising the steps of:
setting a set pressure of the respiratory support apparatus;
based on the set pressure, acquiring an optimal PID control parameter of the turbine under the corresponding set pressure in a PID parameter curve; further, the PID parameter curve is built in a control module of the respiratory support apparatus or stored in a storage module, and of course, the PID parameter curve needs to be detected independently for a single respiratory support apparatus or a single production lot of respiratory support apparatuses. The specific detection method can be a detection method commonly used in the field, and the PID parameter curve acquisition step provided by the invention can also be used.
And driving the turbine to output the air flow with the set pressure in the CPAP mode based on the optimal PID control parameter. After the set pressure is obtained, the breathing support device obtains the optimal PID control parameter of the breathing support device aiming at the set pressure based on the PID curve, and then carries out gas transmission operation by using a PID control method commonly used in the field, so that the turbine motor output gas flow fluctuation is smaller, the time is not big and small, and discomfort is caused. Through experiments, the output fluctuation of the gas transmission pressure of the breathing support device can be made to be +/-0.5 cm H 2 And O, the experience effect is excellent.
In this embodiment, in driving the turbine based on the optimal PID control parameter, specifically, the turbine is driven by calculating the duty ratio by PID and outputting PWM wave. The calculation formula of the PWM wave is as follows:
PWM(k)＝PWM(k-1)+△PWM；
△PWM＝Kp[e(k)-e(k-1)]+Ki*e(k)+Kd[e(k)-2e(k-1)+e(k-2)]；
wherein Kp represents a proportionality coefficient; ki represents an integral coefficient; kd represents the differential coefficient, preferably 0, i.e. in this embodiment the differential coefficient is disregarded, while its corresponding PID parameter curve is constant 0; e (k) represents the present deviation; e (k-1) represents the last deviation; e (k-2) represents the deviation of the last two times; delta PWM represents this increment; PWM (k) represents the current output duty cycle; PWM (k-1) represents the last output duty cycle.
Specifically, in the CPAP mode of the respiratory support apparatus, the rotation speed of the turbine motor is controlled with the set pressure as a target. The closed loop control of the motor rotation speed is to measure the rotation speed information of the motor according to the pulse number obtained in unit time, compare the actual pressure output by the turbine at the rotation speed with the target value to obtain the control deviation, then control the proportion, integral and differential of the deviation through the main control MCU, namely PID calculation, output PWM waves through the control of the duty ratio, control the rotation speed of the motor and make the pressure deviation trend to zero.
In a preferred embodiment, the PID parameter curve is obtained by:
the breathing simulation device is connected into a gas transmission port of breathing support equipment;
recording optimal PID control parameters of the turbine under the condition of outputting airflows with different set pressures respectively;
and performing data fitting to obtain the PID parameter curve. The PID control parameters comprise a proportional parameter Kp, an integral parameter Ki and a differential parameter Kd; PID parameter curves are constructed separately for each parameter, wherein the derivative parameter is preferably 0.
Correspondingly, the invention also provides a PID parameter detection system for the CPAP mode gas transmission control method of the respiratory support equipment, which is used for acquiring the PID parameter curve of the respiratory support equipment and comprises the respiratory support equipment and a respiratory simulation device; the air outlet of the breathing support device is sleeved with a breathing pipeline, the other end of the breathing pipeline is connected with a tee joint, and the other two interfaces of the tee joint are respectively connected with the breathing simulation device and a plug; the plug is provided with a leakage hole. The respiration simulation device actively simulates lungs, and basic parameters are set as follows: airway resistance 10cmH2O, lung compliance 50ml, respiratory rate 10BPM, inspiration duration 1.0S.
Specifically, a breathing simulation device for simulating external pressure is used for connecting a gas transmission port of the breathing support device and is used for simulating different external pressures, and the breathing simulation device is preferably an active simulation lung commonly used in the field; simulating different pressure outputs by using the respiration simulation device to simulate the respiration state of the animal; the gas outlet of the breathing support device is sleeved with a breathing pipeline with the length of 1.8m, the other end of the pipeline is connected with a three-way joint, and the other two interfaces of the three-way joint are respectively connected with the pressure simulation side and a plug for fixing the leakage hole. The main function of the plug is to simulate a negative leakage hole. In the case that the respiratory simulation device is an active simulation lung, the setting parameter of the active simulation lung is preferably airway resistance 10cmH2O, lung compliance 50ml, respiratory rate 10BPM and inspiration time length 1.0S. Merely as a reference setting.
The respiratory support apparatus was connected to the active simulated lung as described above and the simulated lung parameters were set. For CPAP mode of the respiratory support apparatus, the typical setting parameters are 4-20cmH 2 O. The preset set pressures were 4,6, 8..20, respectively, and Kp and Ki were adjusted until the pressure fluctuation at the time of respiratory conversion was adjusted to be + -0.5 cm H for the simulated lungs 2 Within O. As shown in FIG. 2 below, the set pressure for the respiratory support apparatus was set to 6cm H 2 The pressure waveform of the lung is actively simulated in O, and the method provided by the invention can ensure that the pressure fluctuation is 0.5cm H 2 Within O, the body feeling is better.
Kp and Ki at different set pressures were recorded separately as shown in the following table:
| setting the pressure | Kp | Ki |
| 4 | 75.4 | 6.31 |
| 6 | 48.5 | 3.81 |
| 8 | 29.1 | 2.33 |
| 10 | 20.5 | 1.54 |
| 12 | 18.7 | 1.44 |
| 14 | 25.5 | 2.04 |
| 16 | 41.7 | 3.35 |
| 18 | 66.9 | 5.34 |
| 20 | 101 | 8.11 |
And according to the obtained data, fitting the data to obtain a fitting curve as shown in fig. 3 and 4 and a corresponding formula. The method comprises the following steps: setting the pressure as Tpress, the fitting formula of Kp and Ki is as follows:
Kp＝1.0889*Tpress2-24.569*Tpress+156.46；
Ki＝0.09*Tpress2-2.041*Tpress+12.937；
and then leading the fitted formulas of Kp and Ki into a control module of the breathing support equipment, calling the formulas when PID regulation control is carried out, accurately controlling the output of the turbine motor to reach the set target pressure, effectively reducing the shake of the turbine output pressure in the CPAP mode, and achieving better somatosensory effect.
In summary, through the connection test of the breathing support device and the breathing simulation device, the PID parameters of the fan turbine under different set pressures are monitored, the optimal PID control parameters under different set pressures are found, and the data are fitted, so that a linear formula of the turbine base parameters corresponding to the optimal parameters under different set pressure states can be obtained, when the breathing support device is in each time, the set pressures are determined, the turbine base set parameters are consistent, and at the moment, the turbine base parameters are output to the corresponding base parameters in a sliding mode by using the PID control algorithm, so that the breathing support device is convenient and quick. And a control program of the breathing support equipment is imported, so that the stability of output of the turbine motor when different air flows with different set pressures are set is ensured. Further, it is ensured that the output pressure of the turbine fluctuates by + -0.5 cm H2O when the respiratory support apparatus is in CPAP mode.
The present invention also provides a computer readable medium storing computer executable software which when executed by a computer is capable of performing the respiratory support apparatus CPAP mode gas delivery control method. The specific implementation principle is consistent with the foregoing, and details are not repeated here. It should be noted that the computer readable medium may exist alone or may be attached to an electronic device as long as the complete control method described above is achieved when executed by a processor.
The invention also provides a breathing support device, and the CPAP mode gas transmission control method of the breathing support device is used for controlling the operation of the turbine. Monitoring PID parameters of the fan turbine under different set pressures, finding out optimal PID control parameters under different set pressures, fitting the data, and obtaining a linear formula of the optimal parameters under different set pressure states corresponding to the basic parameters of the turbine so as to obtain the set pressures. And a control program of the breathing support equipment is imported, so that the stability of output of the turbine motor when different air flows with different set pressures are set is ensured. Further, it is ensured that the output pressure of the turbine fluctuates by + -0.5 cm H2O when the respiratory support apparatus is in CPAP mode.
It will be understood that equivalents and modifications will occur to those skilled in the art in light of the present invention and their spirit, and all such modifications and substitutions are intended to be included within the scope of the present invention as defined in the following claims.
Claims (8)
1. A method of CPAP mode gas delivery control for a respiratory support apparatus, comprising the steps of:
setting a set pressure of the respiratory support apparatus;
based on the set pressure, acquiring an optimal PID control parameter of the turbine under the corresponding set pressure in a PID parameter curve;
the PID parameter curve is obtained through the following steps: the breathing simulation device is connected into a gas transmission port of breathing support equipment; recording optimal PID control parameters of the turbine under the condition of outputting airflows with different set pressures respectively; performing data fitting to obtain the PID parameter curve; the PID control parameters comprise proportional parameters, integral parameters and differential parameters; respectively constructing PID parameter curves for all parameters;
driving the turbine to output a set pressure air flow in CPAP mode based on the optimal PID control parameter;
driving a turbine based on the optimal PID control parameters, specifically, calculating a duty ratio through PID and outputting PWM waves to drive the turbine; the calculation formula of the PWM wave is as follows:
；
wherein ,representing the current increment; />Representing the current output duty cycle; />Representing the last output duty cycle;
the CPAP mode of the breathing support device is used for controlling the rotating speed of the turbine motor by taking the set pressure as a target; the closed loop control of the rotation speed of the turbine motor is to measure the rotation speed information of the motor according to the pulse number obtained in unit time, compare the actual pressure output by the turbine at the rotation speed with a target value to obtain control deviation, perform PID calculation, output PWM waves through the control of duty ratio, and control the rotation speed of the turbine motor to enable the pressure to trend to zero.
2. A method of CPAP mode gas delivery control for a respiratory support apparatus according to claim 1, wherein the respiratory simulation device is an active simulated lung.
3. A method of CPAP mode gas delivery control for a respiratory support apparatus according to claim 1, wherein Δpwm is:
△PWM = Kp[e(k)-e(k-1)]+Ki*e(k)+Kd[e(k)-2e(k-1)+e(k-2)]；
wherein Kp represents a proportionality coefficient; ki represents an integral coefficient; kd represents a differential coefficient; e (k) represents the present deviation; e (k-1) represents the last deviation; e (k-2) represents the deviation of the last two times.
4. A method of CPAP mode gas delivery control for a respiratory support apparatus as claimed in claim 3, wherein the derivative parameter is preferably 0.
5. A computer readable medium storing computer executable software which when executed by a computer is capable of performing the respiratory support apparatus CPAP mode gas delivery control method of any one of claims 1-4.
6. A PID parameter detection system for use in a method of CPAP mode gas delivery control of a respiratory support apparatus as defined in claim 1, wherein the PID parameter profile for a respiratory support apparatus is obtained, comprising a respiratory support apparatus and a respiratory simulation device; the air outlet of the breathing support device is sleeved with a breathing pipeline, the other end of the breathing pipeline is connected with a tee joint, and the other two interfaces of the tee joint are respectively connected with the breathing simulation device and a plug; the plug is provided with a leakage hole.
7. The PID parameter detection system of claim 6, wherein the respiratory simulation device is an active simulated lung, and the base parameter is set to: airway resistance 10cmH2O, lung compliance 50ml, respiratory rate 10BPM, inspiration duration 1.0S.
8. A respiratory support apparatus, wherein the turbine operation is controlled using the respiratory support apparatus CPAP mode gas delivery control method of any one of claims 1-4.
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| CN202011602388.4A CN112704791B (en) | 2020-12-29 | 2020-12-29 | CPAP mode gas transmission control method of respiratory support equipment and respiratory support equipment |
| PCT/CN2021/117964 WO2022142470A1 (en) | 2020-12-29 | 2021-09-13 | Air transmission control method under continuous positive airway pressure (cpap) mode for respiratory support device, and respiratory support device |
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| CN202011602388.4A CN112704791B (en) | 2020-12-29 | 2020-12-29 | CPAP mode gas transmission control method of respiratory support equipment and respiratory support equipment |
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| CN112704791B (en) * | 2020-12-29 | 2023-08-22 | 湖南明康中锦医疗科技发展有限公司 | CPAP mode gas transmission control method of respiratory support equipment and respiratory support equipment |
| CN115465838A (en) * | 2022-09-14 | 2022-12-13 | 深圳市东吉联医疗科技有限公司 | An Oxygen Generation System Adaptable to Compressor Speed |
| CN116236651A (en) * | 2022-12-29 | 2023-06-09 | 北京谊安医疗系统股份有限公司 | A pressure control system and method for a turbo ventilator |
| CN116643507B (en) * | 2023-03-31 | 2025-05-27 | 中国科学院合肥物质科学研究院 | Respiratory motion simulation system, simulation method and simulation die body |
| CN120204551B (en) * | 2025-03-28 | 2025-10-03 | 广州瑞普医疗科技有限公司 | Turbine rotating speed control method and device and motor turbine system |
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| JP2008518646A (en) * | 2004-11-04 | 2008-06-05 | レスメド リミテッド | Use of motor speed in PAP equipment to estimate flow rate |
| CN103505788B (en) * | 2013-10-11 | 2015-09-23 | 中山大学 | A kind of mechanical ventilation control method of positive pressure respirator and respirator |
| CN103920214A (en) * | 2014-04-28 | 2014-07-16 | 深圳市帝迈生物技术有限公司 | Breathing machine and breathing pressure regulating control system and regulating control method thereof |
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| CN112704791B (en) * | 2020-12-29 | 2023-08-22 | 湖南明康中锦医疗科技发展有限公司 | CPAP mode gas transmission control method of respiratory support equipment and respiratory support equipment |
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2020
- 2020-12-29 CN CN202011602388.4A patent/CN112704791B/en active Active
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2021
- 2021-09-13 WO PCT/CN2021/117964 patent/WO2022142470A1/en not_active Ceased
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| CN112704791A (en) | 2021-04-27 |
| WO2022142470A1 (en) | 2022-07-07 |
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