CN103736183A - Pressure control device and method for double-level respirator - Google Patents
Pressure control device and method for double-level respirator Download PDFInfo
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- CN103736183A CN103736183A CN201310683803.7A CN201310683803A CN103736183A CN 103736183 A CN103736183 A CN 103736183A CN 201310683803 A CN201310683803 A CN 201310683803A CN 103736183 A CN103736183 A CN 103736183A
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Abstract
The invention discloses a pressure control device and method for a double-level respirator. The pressure control device is characterized by comprising a turbofan, a turbofan driving controller, a sensor and an air path, wherein the turbofan is used for generating compressed air; the turbofan driving controller is used for driving the turbofan and comprises a servo controller, and the servo controller is a closed loop system under the compound control of a feedforward controller and a feedback controller; the sensor is used for real-time detection of the actual pressure of the airway of a patient; the air path is formed by connecting hoses. According to the pressure control device and method for the double-level respirator, the design is reasonable, the functions of real-time detection and real-time adjustment of first output pressure and final output pressure are achieved, the anti-interference function is also achieved, and the pressure control device is more intelligent, safe and reliable.
Description
Technical field
The present invention relates to a kind of two level respirator, relate in particular to a kind of apparatus and method of controlling two level respirator pressure, belong to medical instruments field.
Background technology
Snoring is a kind of ubiquitous sleep phenomenon, and most people thinks that this is quotidian, and takes exception to, and somebody regards snoring as the performance sleeping soundly.Snoring is healthy formidable enemy in fact, and at present, along with people are to hypopnea, the raising of the understanding that can cause various diseases as snored often can be used respirator in family care.The reason of snoring generally can be divided into three kinds: the one, because patient airway diminishes, as caused by diseases such as nasal polyps; The 2nd, due to indoor anoxia, while causing patient to sleep, open one's mouth to breathe; The 3rd, by the sleep apnea syndrome of vegetative nerve control, the snoring again after the meeting that suffocates, this situation is very serious, is even in peril of one's life, and night respiration time out exceedes 120 seconds and easily in morning, dies suddenly; In addition, because snoring makes sleep-respiratory, repeatedly suspend, cause brain, blood severe depletion of oxygen, form hypoxemia, and bring out the various diseases such as hypertension, diabetes, brain cardiopathia, arrhythmia, myocardial infarction, angina pectoris.Therefore, the harm of snoring can not be ignored, the use of household type respirator is also more and more general, respirator is a kind of artificial mechanical ventilation device, for autonomous respiration campaign auxiliary or control patient, to reach the function of gas exchange in lung, reduce the consumption of human body, be beneficial to the recovery of respiratory function.
Utilize that respirator treatment pulmonary function is poor, lung failure, sleep apnea syndrome patient's treatment principle is: respirator produces suitable continuous positive pressure venti lation (comprise constant malleation, change malleation etc.), through nasal mask or oral nose mask, offer patient, can effectively avoid patients with respiratory tract to subside or partly subside, thereby guaranteeing that patient respiratory is unobstructed.The respirator of the respiratory disorder that the reasons such as treatment is poor by pulmonary function, lung failure, sleep apnea syndrome cause is two level respirators, the concept of two level respirators is for patient provides the higher pressure of inspiration(Pi) that sets and lower expiratory pressure, conversion automatically in patient respiratory process.But; because patient's physiology of respiration complexity is higher; airway resistance often can constantly boost, reduces pressure, cause pressure oscillation more due to state impacts such as sleeping posture change, drinks, and the product of each producer all exists the defect that cannot meet therapeutic effect in various degree at present.
The output pressure control mode of respirator is generally at present: expiratory gas flow, the suction that first sets in advance machine exhaled the time, inhaled and exhale frequency and controlled pressure, after normal work, machine produces aspiratory action according to the inspiratory flow arranging, airway pressure increases, when airway pressure arrives after the controlled pressure of setting, reduce inspiratory flow, maintain constant pressure until air-breathing end.The shortcoming of this kind of control method is: variation by a relatively large margin can not occur respiratory frequency, otherwise can cause the input pressure (high pressure while being air-breathing of respirator, low pressure during expiration) do not mate with patient's breathing state, further aggravation patient's respiratory disorder, the life security that seriously even jeopardizes patient.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of and detects in real time, adjusts in real time output pressure and has two level respirator pressure control devices and the compress control method of anti-interference function.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of two level respirator pressure control device, is characterized in that: comprising:
Turbofan: for generation of compressed air;
Turbofan driving governor: for driving described turbofan, described turbofan driving governor comprises servo controller, described servo controller is the closed loop system by feedforward controller and the compound control of feedback controller;
Sensor: for detecting in real time the actual pressure of patient airway;
Gas circuit: formed by hose connection, described turbofan is connected with nasal mask by flexible pipe and forms gas circuit, between described sensor and described turbofan driving governor and between described turbofan driving governor and turbofan, by electric wire, connect, described sensor also with described soft pipe connection.
Described feedforward controller is for regulating in real time the first output pressure of turbofan according to the actual pressure of described patient airway, when patient is suction condition from expiration state-transition, the actual pressure that described sensor detects patient airway from large to small, the step control signal of a rising of described feedforward controller output is given described servo controller, turbofan moment is accelerated, thereby the first output pressure of the turbofan that raises rapidly, to help patient air-breathing smoothly; When patient is changed expiration state into from suction condition, described sensor detects that the actual pressure of patient airway changes from small to big, the step control signal of a reduction of described feedforward controller output is given described servo controller, turbofan moment is slowed down, thereby reduce rapidly the first output pressure of turbofan, to help patient to exhale smoothly.
Described feedback controller has anti-interference function, for compensating unstable that disturbance that patient respiratory produces airway pressure and the non-linear factor of turbofan cause, realizes the function of controlling the final output pressure of turbofan.
Described turbofan driving governor adopts pid algorithm to realize the real-time adjusting to the first output pressure of turbofan and final output pressure.
Described sensor is pressure and/or flow transducer.
A kind of two level respirator compress control method, is characterized in that: comprise the following steps:
Step 1: utilize sensor to detect in real time the actual pressure of patient airway;
Step 2: turbofan driving governor Real-time Collection receives the actual pressure of the patient airway that described Sensor monitoring arrives, and according to pressure, change to adjust the rotating speed of turbofan, to realize the function of controlling turbofan the first output pressure;
Step 3: utilize feedback controller to have anti-interference function function, further compensation adjustment the first output pressure, realizes the function of controlling the final output pressure of turbofan.
The two level respirator pressure control devices of one provided by the invention and compress control method, adopt sensor to detect in real time the actual pressure of patient airway, and information is passed to turbofan driving governor in real time, when the actual pressure of patient airway changes greatly, by sensor, judging is to be suction condition by expiration state-transition, or change expiration state into by suction condition, when being while being suction condition by expiration state-transition, the actual pressure moment of patient airway diminishes, the step control signal of a rising of feedforward controller output is given described servo controller, turbofan moment is accelerated, thereby the first output pressure of the turbofan that raises rapidly, to help patient air-breathing smoothly, when patient is changed expiration state into from suction condition, described sensor detects that the actual pressure moment of patient airway becomes large, the step control signal of a reduction of described feedforward controller output is given described servo controller, turbofan moment is slowed down, thereby reduce rapidly the first output pressure of turbofan, to help patient to exhale smoothly, in addition, feedback controller has anti-interference function, can compensate unstable that disturbance that patient respiratory produces airway pressure and the non-linear factor of turbofan cause, further adjusts the first output pressure, forms final output pressure, by feedforward controller and feedback controller setting, make the final output pressure of turbofan more reliable and more stable, and, detect in real time the also sensor of transmission of signal and guaranteed that the first output pressure of respirator is along with patient's respiratory frequency changes, more intelligent, there will not be the input pressure (high pressure while being air-breathing, low pressure during expiration) of respirator and patient's the unmatched phenomenon of breathing state.The two level respirator pressure control devices of one provided by the invention and compress control method, reasonable in design, possess real-time detection, adjust the first output pressure and final output pressure in real time, and there is jamproof function, more intelligent and safe and reliable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
The first output pressure of adjusting through feedforward controller that wherein Gp is turbofan, Gc and Gr are respectively feedback controller and feedforward controller, u1 and u2 are respectively feedback controller output voltage and feedforward controller output voltage, D is the pressure disturbance that patient respiratory produces air flue, Ps is turbofan, Pu is the output pressure that Gp adjusts through feedback controller, i.e. the final output pressure of turbofan.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 1, a kind of two level respirator pressure control devices, is characterized in that: comprising:
Turbofan: for generation of compressed air;
Turbofan driving governor: for driving described turbofan, described turbofan driving governor comprises servo controller, described servo controller is the closed loop system by feedforward controller and the compound control of feedback controller;
Sensor: for detecting in real time the actual pressure of patient airway;
Gas circuit: formed by hose connection, described turbofan is connected with nasal mask by flexible pipe and forms gas circuit, between described sensor and described turbofan driving governor and between described turbofan driving governor and turbofan, by electric wire, connect, described sensor also with described soft pipe connection.
Described feedforward controller is for regulating in real time the first output pressure of turbofan according to the actual pressure of described patient airway, when patient is suction condition from expiration state-transition, the actual pressure that described sensor detects patient airway from large to small, the step control signal of a rising of described feedforward controller output is given described servo controller, turbofan moment is accelerated, thereby the first output pressure of the turbofan that raises rapidly, to help patient air-breathing smoothly; When patient is changed expiration state into from suction condition, described sensor detects that the actual pressure of patient airway changes from small to big, the step control signal of a reduction of described feedforward controller output is given described servo controller, turbofan moment is slowed down, thereby reduce rapidly the first output pressure of turbofan, to help patient to exhale smoothly.
Described feedback controller has anti-interference function, for compensating unstable that disturbance that patient respiratory produces airway pressure and the non-linear factor of turbofan cause, realizes the function of controlling the final output pressure of turbofan.
Described turbofan driving governor adopts pid algorithm to realize the real-time adjusting to the first output pressure of turbofan and final output pressure.
Described sensor is pressure and/or flow transducer.
A kind of two level respirator compress control method, is characterized in that: comprise the following steps:
Step 1: utilize sensor to detect in real time the actual pressure of patient airway;
Step 2: turbofan driving governor Real-time Collection receives the actual pressure of the patient airway that described Sensor monitoring arrives, and according to pressure, change to adjust the rotating speed of turbofan, to realize the function of controlling turbofan the first output pressure;
Step 3: utilize feedback controller to have anti-interference function function, further compensation adjustment the first output pressure, realizes the function of controlling the final output pressure of turbofan.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. two level respirator pressure control devices, is characterized in that: comprising:
Turbofan: for generation of compressed air;
Turbofan driving governor: for driving described turbofan, described turbofan driving governor comprises servo controller, described servo controller is the closed loop system by feedforward controller and the compound control of feedback controller;
Sensor: for detecting in real time the actual pressure of patient airway;
Gas circuit: formed by hose connection, described turbofan is connected with nasal mask by flexible pipe and forms gas circuit, between described sensor and described turbofan driving governor and between described turbofan driving governor and turbofan, by electric wire, connect, described sensor also with described soft pipe connection.
2. the two level respirator pressure control devices of one according to claim 1, it is characterized in that: described feedforward controller is for regulating in real time the first output pressure of turbofan according to the actual pressure of described patient airway, when patient is suction condition from expiration state-transition, the actual pressure that described sensor detects patient airway from large to small, the step control signal of a rising of described feedforward controller output is given described servo controller, turbofan moment is accelerated, thereby the first output pressure of the turbofan that raises rapidly, to help patient air-breathing smoothly, when patient is changed expiration state into from suction condition, described sensor detects that the actual pressure of patient airway changes from small to big, the step control signal of a reduction of described feedforward controller output is given described servo controller, turbofan moment is slowed down, thereby reduce rapidly the first output pressure of turbofan, to help patient to exhale smoothly.
3. the two level respirator pressure control devices of one according to claim 1, it is characterized in that: described feedback controller has anti-interference function, for compensating unstable that disturbance that patient respiratory produces airway pressure and the non-linear factor of turbofan cause, realize the function of controlling the final output pressure of turbofan.
4. the two level respirator pressure control devices of one according to claim 1, is characterized in that: described turbofan driving governor adopts pid algorithm to realize the real-time adjusting to the first output pressure of turbofan and final output pressure.
5. the two level respirator pressure control devices of one according to claim 1, is characterized in that: described sensor is pressure and/or flow transducer.
6. two level respirator compress control methods, is characterized in that: comprise the following steps:
Step 1: utilize sensor to detect in real time the actual pressure of patient airway;
Step 2: turbofan driving governor Real-time Collection receives the actual pressure of the patient airway that described Sensor monitoring arrives, and according to pressure, change to adjust the rotating speed of turbofan, to realize the function of controlling turbofan the first output pressure;
Step 3: utilize feedback controller to have anti-interference function function, further compensation adjustment the first output pressure, realizes the function of controlling the final output pressure of turbofan.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105031788A (en) * | 2015-07-24 | 2015-11-11 | 湖南明康中锦医疗科技发展有限公司 | Breathing machine voltage regulating system and control method |
| CN105183024A (en) * | 2015-10-09 | 2015-12-23 | 航宇救生装备有限公司 | Flow-pressure double close loop gas pressure control method and device |
| CN105999490A (en) * | 2016-06-20 | 2016-10-12 | 湖南明康中锦医疗科技发展有限公司 | Method for adjusting pressure of draught fan of respirator |
| CN106422009A (en) * | 2016-10-14 | 2017-02-22 | 广州南北电子科技有限公司 | Method for following breathing pressure |
| CN107679624A (en) * | 2017-10-24 | 2018-02-09 | 苏州妙文信息科技有限公司 | Lung ventilator pressure stability method based on BP algorithm |
| CN109621114A (en) * | 2018-12-17 | 2019-04-16 | 湖南城市学院 | A kind of mechanical ventilation mode, pressure control method |
| CN109893736A (en) * | 2017-12-07 | 2019-06-18 | 北京怡和嘉业医疗科技股份有限公司 | Data processing method and device based on positive airway pressure machine |
| CN109939315A (en) * | 2017-12-20 | 2019-06-28 | 北京谊安医疗系统股份有限公司 | A kind of automatic height above sea level compensation method of ventilator turbine pressure control |
| CN113230116A (en) * | 2021-06-07 | 2021-08-10 | 山东大学 | Chest and abdomen combined pressing system coordinately controlled by double steering engines |
| CN113342080A (en) * | 2021-06-20 | 2021-09-03 | 三河科达实业有限公司 | Breathing module turbine variable speed control method of portable universal life support system |
| CN117180577A (en) * | 2023-10-18 | 2023-12-08 | 深圳华声医疗技术股份有限公司 | Ventilation control method for anesthesia machine, anesthesia machine and storage medium |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105031788A (en) * | 2015-07-24 | 2015-11-11 | 湖南明康中锦医疗科技发展有限公司 | Breathing machine voltage regulating system and control method |
| CN105183024A (en) * | 2015-10-09 | 2015-12-23 | 航宇救生装备有限公司 | Flow-pressure double close loop gas pressure control method and device |
| CN105999490B (en) * | 2016-06-20 | 2018-07-03 | 湖南明康中锦医疗科技发展有限公司 | A kind of lung ventilator blower pressure adjusting method |
| CN105999490A (en) * | 2016-06-20 | 2016-10-12 | 湖南明康中锦医疗科技发展有限公司 | Method for adjusting pressure of draught fan of respirator |
| CN106422009A (en) * | 2016-10-14 | 2017-02-22 | 广州南北电子科技有限公司 | Method for following breathing pressure |
| CN107679624A (en) * | 2017-10-24 | 2018-02-09 | 苏州妙文信息科技有限公司 | Lung ventilator pressure stability method based on BP algorithm |
| CN109893736A (en) * | 2017-12-07 | 2019-06-18 | 北京怡和嘉业医疗科技股份有限公司 | Data processing method and device based on positive airway pressure machine |
| US11865258B2 (en) | 2017-12-07 | 2024-01-09 | Bmc Medical Co., Ltd. | Data processing method and device based on positive pressure ventilation therapy machine |
| CN109939315A (en) * | 2017-12-20 | 2019-06-28 | 北京谊安医疗系统股份有限公司 | A kind of automatic height above sea level compensation method of ventilator turbine pressure control |
| CN109621114A (en) * | 2018-12-17 | 2019-04-16 | 湖南城市学院 | A kind of mechanical ventilation mode, pressure control method |
| CN113230116A (en) * | 2021-06-07 | 2021-08-10 | 山东大学 | Chest and abdomen combined pressing system coordinately controlled by double steering engines |
| CN113230116B (en) * | 2021-06-07 | 2022-08-02 | 山东大学 | Chest and abdomen combined pressing system coordinately controlled by double steering engines |
| CN113342080A (en) * | 2021-06-20 | 2021-09-03 | 三河科达实业有限公司 | Breathing module turbine variable speed control method of portable universal life support system |
| CN117180577A (en) * | 2023-10-18 | 2023-12-08 | 深圳华声医疗技术股份有限公司 | Ventilation control method for anesthesia machine, anesthesia machine and storage medium |
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Application publication date: 20140423 |