CN111821552A - A multifunctional respiratory therapy system and method for use in hospital and home environments - Google Patents

Abstract

The invention discloses a multifunctional respiratory therapy system for hospital and home environments, comprising: the control unit, the unit of ventilating, system oxygen unit have solved the problem that current respiratory therapy equipment relied on external oxygen source completely through oxygen suppliment unit system oxygen by oneself, and integrated low/high flow oxygen therapy, intelligent oxygen suppliment control, do not have the malleation machinery of wound treatment function in an organic whole of ventilating can start corresponding treatment mode according to the different demands of patient respiratory disease different stages to realize seamless switching, a tractor serves several purposes in various treatment schemes. A multifunctional respiratory therapy system and method for hospital and family environment features that the blood oxygen concentration closed-loop control, synchronous respiration trigger pulse oxygen supply or synchronous respiration demand oxygen supply technique is used, and the patient only has inspiration phase to supply oxygen, so decreasing the stimulation of airflow to upper respiratory tract, improving the comfort and compliance of patient and maximally reducing the waste of oxygen resource.

Description

A multifunctional respiratory therapy system and method for use in hospital and home environments

technical field

The present invention relates to the technical field of respiratory therapy, in particular to a multifunctional respiratory therapy system and method for use in hospital and home environments.

Background technique

According to the patient's respiratory disease from mild to severe, the respiratory treatment generally adopts low-flow oxygen therapy, high-concentration oxygen therapy, non-invasive mechanical ventilation and invasive mechanical ventilation treatment programs in sequence; in the recovery period, invasive mechanical ventilation, non-invasive mechanical ventilation, High-concentration oxygen therapy and low-flow oxygen therapy treatment programs, but the current hospital respiratory therapy equipment has a relatively single function, and it is very troublesome to use different respiratory therapy programs to replace the therapeutic equipment.

At the same time, most of the existing respiratory therapy equipment uses an external oxygen source for respiratory therapy. Usually, hospitals will select liquid oxygen prepared by deep cooling separation method, or high-pressure gas cylinders, or pressure swing adsorption equipment according to the oxygen demand. Produce oxygen. Moreover, the continuous flow oxygen supply method is adopted, and this oxygen supply method will actually produce a great waste of oxygen. Because the duration of the inspiratory phase and the expiratory phase are different when a normal person breathes, the oxygen provided by the continuous oxygen supply is only (1/3)×(3/4) during the whole breathing process, that is, 1/4 of the oxygen is What really works, that is to say, at least 3/4 of the oxygen is wasted, so that the supplied oxygen cannot have the corresponding therapeutic effect. At the same time, the continuous supply of oxygen will also cause the airflow to stimulate the patient's upper respiratory tract, thereby causing discomfort to the patient.

SUMMARY OF THE INVENTION

The present invention provides a multifunctional respiratory therapy system and method for use in hospital and home environments to overcome the above technical problems.

The present invention is a multifunctional respiratory therapy system for hospitals and home environments, comprising: a control unit, a ventilation unit, and an oxygen generating unit; the control unit is used to set different working modes and the different working modes. the preset treatment parameters; used to control the oxygen generating unit and the ventilation unit, and adjust the actual treatment parameter values to reach the preset treatment parameter values according to the different working modes; the different working modes include: : High-flow humidified oxygen therapy, low-flow oxygen therapy, and non-invasive positive pressure mechanical ventilation working modes; the oxygen generating unit is used to generate oxygen and deliver oxygen to the ventilation unit or patient breathing circuit; non-invasive positive pressure mechanical ventilation The patient breathing circuit used in the working mode includes: an oxygen channel and an air channel, and the oxygen generating unit supplies oxygen/air to the patient through the oxygen channel/air channel according to the breathing phase of the patient; the ventilation unit is used to The oxygen/external oxygen source and air delivered by the oxygen generating unit are mixed into an air-oxygen mixed gas, and the concentration of the air-oxygen mixed gas is adjusted to reach the preset treatment parameter value; it is used to adjust the air-oxygen mixed gas. The flow reaches the preset treatment parameter value; it is used to heat and humidify the air-oxygen mixed gas to generate a heated and humidified gas, so that the heated and humidified gas enters the patient's breathing circuit, and adjusts the heated and humidified gas. temperature and the temperature of the patient's breathing circuit reach the preset treatment parameter value; for monitoring the air-oxygen mixed gas pressure value and flow rate value, and adjusting the air-oxygen mixed gas pressure value to reach the preset treatment parameter value .

Further, the preset treatment parameters under different working modes include: preset treatment parameters under the high-flow humidification oxygen therapy working mode, including: air-oxygen mixed gas oxygen concentration, air-oxygen mixed gas flow rate, heating Humidification temperature, patient breathing circuit temperature; preset treatment parameters under low-flow oxygen therapy working mode, including: oxygen flow; preset treatment parameters under non-invasive positive pressure mechanical ventilation working mode, including: air-oxygen mixed gas oxygen concentration , Air-oxygen mixed gas flow, inspiratory airway pressure, expiratory airway pressure, heating and humidification temperature, patient breathing circuit temperature.

Further, the high-flow humidification oxygen therapy working mode includes: the control unit controls the ventilation unit to mix the oxygen/external oxygen source and air delivered by the oxygen generating unit to form an air-oxygen mixed gas, and adjusts the air. The oxygen concentration and flow value of the oxygen mixed gas reach the preset treatment parameter value; the control unit controls the ventilation unit to heat and humidify the air-oxygen mixed gas to generate a warmed and humidified gas, and then heat and humidify the warm and humidified gas. The control unit controls the ventilation unit to adjust the temperature value of the heated humidified gas and the patient breathing circuit to the preset treatment parameter value; the control unit controls the ventilation unit The warmed and humidified gas is delivered to the patient breathing circuit.

Further, the non-invasive positive pressure mechanical ventilation working mode includes: the control unit controls the ventilation unit to mix the oxygen/external oxygen source and air delivered by the oxygen generating unit to form an air-oxygen mixed gas, and adjust the air-oxygen mixture. The oxygen concentration and flow value of the mixed gas reach the preset treatment parameter value; the ventilation unit monitors the pressure value and flow rate value of the air-oxygen mixed gas, and sends the pressure value and flow rate value to the control unit; value and flow rate value to determine the patient's expiratory phase or inspiratory phase; when it is determined to be the inspiratory phase, the control unit controls the ventilation unit to adjust the air-oxygen mixed gas pressure value and the inspiratory phase airway pressure value are equal; when it is determined that the expiratory phase is in the expiratory phase, the control unit controls the ventilation unit to adjust the air-oxygen mixed gas pressure value to be equal to the airway pressure value in the expiratory phase.

Further, the low-flow oxygen therapy working mode includes: the control unit controls the oxygen production unit to use vacuum pressure swing adsorption or pressure swing adsorption technology to produce oxygen; the control unit controls the oxygen production unit to adjust the oxygen flow value to reach the Preset treatment parameter values; the control unit controls the oxygen generating unit to deliver oxygen to the patient breathing circuit.

Further, it also includes: a monitoring and alarm unit, a blood oxygen module communication unit, a wireless communication unit, and a human-computer interaction unit; the monitoring and alarm unit is used to monitor the operation of the system, alarm when the system fails, and classify the alarm category. and the alarm threshold value is sent to the control unit; the blood oxygen module communication unit is used to monitor the blood oxygen concentration and pulse rate of the patient in real time, and send the blood oxygen concentration and pulse rate data to the control unit; the wireless communication unit , used for remote wireless connection to the data center of the hospital; the human-computer interaction unit is used to send the parameters set by the user to the control unit; the control unit outputs performance and status parameters to the human-computer interaction unit.

Further, the oxygen producing unit includes: a positive air pressure interface and a negative air pressure interface; the positive air pressure interface is used to connect an atomizing device, and the oxygen producing unit provides a positive pressure air source for the atomizing device; the negative air pressure The interface is used to connect the sputum suction device, and the oxygen generating unit provides a negative pressure air source for the sputum suction device.

A versatile approach to respiratory therapy for use in hospital and home settings, including:

The control unit sets different working modes and preset treatment parameters under the different working modes; sends the preset treatment parameters to the oxygen generating unit and the ventilation unit according to the different working modes; the different working modes Modes, including: high-flow humidified oxygen therapy, low-flow oxygen therapy, non-invasive positive pressure mechanical ventilation working mode;

The control unit controls the oxygen production unit to produce oxygen and deliver the oxygen to the ventilation unit or the patient breathing circuit;

When oxygen is delivered to the ventilation unit, the control unit controls the ventilation unit to mix the oxygen/external oxygen source and air delivered by the oxygen generating unit into an air-oxygen mixed gas, and adjusts the actual treatment parameter values according to the different working modes to the preset treatment parameter value, and then the air-oxygen mixed gas is delivered to the patient's breathing circuit, so that the air-oxygen mixed gas enters the patient's lungs for gas exchange;

In the non-invasive positive pressure mechanical ventilation working mode, the ventilation unit mixes the oxygen and air delivered by the oxygen generating unit into an air-oxygen mixed gas. When the air-oxygen mixed gas is delivered to the patient's breathing circuit, the control unit controls the The oxygen generating unit supplies oxygen/air to the patient through the oxygen channel/air channel according to the breathing phase of the patient.

Further, the control unit controls the oxygen production unit to supply oxygen/air to the patient through the oxygen channel/air channel according to the breathing phase of the patient, including: the control unit controls the oxygen production unit to monitor the breathing phase of the patient, so The breathing phase includes: an inhalation phase and an expiratory phase; the inspiratory phase supplies oxygen to the patient through the oxygen channel, and supplies air to the patient through the air channel; in the expiration phase, the oxygen channel stops supplying oxygen, and the air channel is Air supply to the patient.

The invention solves the problem that the existing respiratory therapy equipment completely relies on an external oxygen source through the self-producing oxygen of the oxygen supply unit. It integrates the functions of low/high flow oxygen therapy, intelligent oxygen supply control, and non-invasive positive pressure mechanical ventilation. It can start the corresponding treatment work mode according to the different needs of patients in different stages of respiratory disease, so as to realize seamless treatment in various treatment plans. Switch, multi-purpose machine. Using closed-loop control of blood oxygen concentration, respiration-synchronized-triggered pulse oxygen supply or respiration-synchronized on-demand oxygen supply technology, oxygen is supplied only during the inspiratory phase of the patient, reducing the stimulation of the upper airway caused by airflow during continuous flow oxygen therapy, and improving patient comfort and compliance while minimizing the waste of oxygen resources.

Description of drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic structural diagram of a multifunctional respiratory therapy system of the present invention;

Fig. 2 is the schematic diagram of the multifunctional respiratory therapy application system of the present invention;

Figure 3 is a schematic structural diagram of the ventilation unit of the present invention;

Fig. 4 is the control schematic diagram of the ventilation unit of the present invention;

Fig. 5 is a schematic diagram of the structure of the oxygen production unit of the present invention;

Fig. 6 is the control schematic diagram of the oxygen production unit of the present invention;

7 is a schematic structural diagram of the oxygen and air isolation dual-channel breathing tube of the present invention;

Figure 8 is a flow chart of a multifunctional respiratory therapy method for use in hospital and home environments.

Description of reference numbers:

170, control unit; 180, ventilation unit; 190, oxygen production unit; 130, wireless communication unit; 140, blood oxygen module communication unit; 150, monitoring and alarm unit; 160, human-computer interaction unit; 107, positive air pressure interface; 108, negative air pressure interface; 701, oxygen input interface; 702, oxygen channel; 703, air channel.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in FIG. 1 , this embodiment provides a multifunctional respiratory therapy system for hospital and home environments, including: a control unit 170 , a ventilation unit 180 , and an oxygen generating unit 190 ; the control unit 170 can be set to high-flow humidity Chemotherapeutic oxygen therapy, low flow oxygen therapy, and non-invasive positive pressure mechanical ventilation working modes. Different working modes correspond to different types of patient breathing circuits, such as high-flow humidified oxygen therapy mode using high-flow nasal oxygen tube, non-invasive positive pressure mechanical ventilation mode (mixed oxygen/air) can use nasal mask, nasal mask or full face mask , the patient's breathing circuit has two channels of oxygen and air; the low-flow oxygen therapy mode can use a nasal oxygen tube, and the patient's breathing circuit has only an oxygen channel. The control unit 170 sets preset treatment parameters according to the different set working modes, and sends the preset treatment parameters to the ventilation unit 180 and the oxygen generating unit 190 . The oxygen making unit 190 receives the control signal from the main control unit 170, and the oxygen making unit 190 outputs the signal to the main control unit 170; The nitrogen adsorbed in the oxygen process outputs the generated medical oxygen to the patient breathing circuit through the patient oxygen supply interface 106; the ventilation unit 180 receives the control signal from the main control unit 170, and the ventilation unit 180 outputs the signal to the main control unit 170; ventilation The unit 180 receives the medical oxygen input through the external oxygen source interface 101, or receives the medical oxygen output from the oxygen generating unit 190, and receives the air input through the air inlet (including the filter) 102; the ventilation unit 180 outputs the therapeutic gas through the main ventilation interface 105 to the patient breathing circuit. As shown in Figure 7, in the working mode of high-flow humidified oxygen therapy and non-invasive positive pressure mechanical ventilation, the patient's breathing circuit adopts a dual-channel breathing tube structure with oxygen and air isolation, including an oxygen input interface 701, an oxygen channel 702, and an air channel 703 , other structures such as ports and NTC are the same as the patient breathing circuit.

In this embodiment, the preset treatment parameters in the high-flow humidification oxygen therapy working mode include: air-oxygen mixed gas oxygen concentration, air-oxygen mixed gas flow rate, heating and humidifying temperature, and patient breathing circuit temperature;

Preset treatment parameters in low-flow oxygen therapy working mode, including: oxygen flow;

Preset treatment parameters in non-invasive positive pressure mechanical ventilation working mode, including: air-oxygen mixed gas oxygen concentration, air-oxygen mixed gas flow, inspiratory airway pressure, expiratory airway pressure, warming and humidifying temperature, patient Breathing circuit temperature.

In this embodiment, as shown in FIG. 5 , the oxygen production unit 190 adopts the principle of pressure swing adsorption (PSA) or vacuum pressure swing adsorption (VPSA) to produce oxygen, including a muffler, an air compressor, a cooler, an air control valve, an adsorption Tower, exhaust muffler, oxygen storage tank, flow control valve, oxygen concentration flow sensor, pressure sensor. Wherein, the raw air enters the oxygen generating unit 190 through the air inlet (including filtering) to filter impurities such as dust and particles in the air. The air filtered by the air inlet (including the filter) enters the muffler, which is used to reduce the noise of the intake air flow. The filtered and noise-reduced air enters the air compressor, which is used to generate high-pressure air for separation of oxygen and oxygen at a pressure raised above atmospheric pressure. The high-pressure air enters the air control valve, and one of the gas passages of the air control valve transports the high-pressure air to the adsorption tower. The adsorption tower is used to adsorb nitrogen in the high-pressure air. The oxygen in the high-pressure air cannot be adsorbed, and flows to its outlet through the adsorption tower. The adsorbed nitrogen gas is connected to the exhaust muffler through another gas channel of the air control valve, and the exhaust muffler is connected to the exhaust port to discharge the nitrogen gas to the outside of the multifunctional respiratory therapy system. Exhaust silencing is used to reduce the airflow noise of nitrogen gas during the depressurization and activation process of the air-oxygen separator. The oxygen storage tank is used to store the finished oxygen produced by the air-oxygen separator. The oxygen storage tank is connected to a flow control valve, which is used to regulate the output gas flow. The oxygen concentration flow sensor is connected to the flow control valve, and is used to detect the oxygen concentration and flow rate of finished oxygen in the airway. The solenoid valve is connected to the oxygen concentration flow sensor, which is used to control the finished oxygen output channel. One of the channels is connected to the ventilation unit to provide the oxygen source for the subsystem; the other channel is connected to the patient oxygen supply interface to provide the patient with finished oxygen for oxygen therapy. , a pressure sensor is connected to this channel, and the pressure sensor is used to monitor the breathing phase of the patient at the terminal of the gas output channel in real time.

As shown in FIG. 6 , the working process of the oxygen generating unit 190 includes: the raw air enters the air compressor through intake air filtration and noise reduction treatment, and the high-pressure air output from the air compressor enters the air control valve, and enters through the gas channel of the air control valve. The adsorption tower, the adsorption tower absorbs nitrogen in the high-pressure air entering from its inlet, and cannot adsorb the oxygen in the high-pressure air. The high-concentration finished oxygen flows out from its outlet and enters the oxygen storage tank, and then the adsorption tower passes the adsorbed nitrogen through the gas control. The other gas channel of the valve is discharged into the atmosphere, and the oxygen storage tank delivers high-concentration finished medical oxygen to the patient's respiratory tract through the gas pipeline.

As shown in FIG. 3 , the ventilation unit 180 includes: a proportional valve, an air-oxygen mixer, an oxygen concentration sensor, a flow sensor, a controllable airflow generator, a pressure sensor, and a heating and humidifying unit. The oxygen proportional valve is used to adjust the amount of oxygen input to the ventilation unit; the air-oxygen mixer is used to mix the input oxygen with air to produce air-oxygen mixed gas with a certain oxygen concentration; the oxygen concentration sensor is used to monitor air-oxygen in real time The oxygen concentration of the gas in the mixer; the flow sensor is used to monitor the flow of the gas in the airway of the breathing circuit connected to the patient in real time; the controllable airflow generator is used to increase the pressure of the air-oxygen mixture; the pressure sensor is used to monitor the gas in the patient's breathing airway The heating and humidifying unit is used to heat and humidify the air and oxygen gas in the breathing circuit.

In this embodiment, as shown in FIG. 3 , when working in the high-flow humidification oxygen therapy mode, the external oxygen source enters the ventilation unit 180 through the external oxygen source interface 101 ; the air enters the ventilation unit 180 through the air inlet (including filter) 102 . The ventilation unit 180 generates a heated and humidified mixed gas of oxygen and air according to the set oxygen concentration and flow rate, and the heated and humidified air-oxygen mixed gas is output to the patient breathing circuit (high-flow nasal oxygen tube) through the main ventilation interface 105 , nasal mask, nasal mask or full face mask), the heating interface 104 is connected to the interface 311 of the patient's breathing circuit, the interface 311 of the patient's breathing circuit is connected to the NTC near the patient's interface, and the gas in the patient's breathing circuit is heated to the set value. Temperature, the heated and humidified gas is output from the patient's breathing circuit to the patient interface, and then enters the patient's lungs for gas exchange; part of the gas discharged from the patient's lungs enters the external atmosphere of the human body, and part enters the patient's breathing circuit.

When the ventilation unit 180 works in the high-flow humidification oxygen therapy mode, the workflow includes:

The controller of the ventilation unit 180 performs closed-loop control according to the real-time oxygen concentration data detected by the oxygen concentration sensor and the real-time flow data detected by the flow sensor, and adjusts the oxygen input to the air-oxygen mixer through the external high-pressure oxygen source interface through the proportional valve. The generator controls the air-oxygen mixer to output the air-oxygen mixed gas with the set oxygen concentration and flow rate, the air-oxygen mixed gas enters the heating and humidifying unit, and the heating and humidifying unit warms the air-oxygen mixed gas to the set temperature , which delivers the therapeutic gas to the patient's airway through a heated breathing circuit.

In this embodiment, as shown in FIG. 3 , when working in the non-invasive positive pressure mechanical ventilation (mixed oxygen) mode, the oxygen source can enter the ventilation unit 180 from an external oxygen source through the external oxygen source interface 101 , or can be generated by the internal oxygen generating unit 190 offers. The air enters the ventilation unit 180 through the air inlet (including filtering) 102; the ventilation unit 180 generates a heated and humidified mixed gas of oxygen and air according to the set oxygen concentration and flow rate, and the heated and humidified air-oxygen mixed gas passes through the main ventilation interface. 105 is output to the patient breathing circuit, the heating interface 104 is connected to the interface of the patient breathing circuit, and the interface of the patient breathing circuit is connected to the patient end NTC, the gas in the heating tube is heated to the set temperature, and the heating and humidification is output from the heating tube. The gas is sent to the patient interface and enters the patient's lungs for gas exchange; part of the gas discharged from the patient's lungs enters the external atmosphere of the human body, and part enters the patient's breathing circuit.

When working in the non-invasive positive pressure mechanical ventilation (air) mode, the external oxygen source interface 101 is turned off, and the oxygen source of the internal oxygen production subsystem is turned off at the same time.

As shown in FIG. 4 , when working in the non-invasive positive pressure mechanical ventilation (mixed oxygen) mode, the workflow includes: the oxygen source is provided by an external oxygen source or the oxygen generating unit 190, and the oxygen concentration monitor monitors the air inside the air-oxygen mixer in real time. The oxygen concentration of the oxygen mixture, the main controller performs closed-loop control according to the real-time airway pressure data detected by the airway pressure monitor, and controls the air-oxygen mixer to output the air-oxygen mixture of the set pressure through the controllable airflow generator. The mixed gas enters the humidifier, the humidifier warms the air-oxygen mixed gas to a set temperature, and delivers the therapeutic gas to the patient's airway through the heating breathing circuit.

When working in non-invasive positive pressure mechanical ventilation (air) mode, the workflow includes: the main controller turns off the external oxygen source and the oxygen generation subsystem, and the main controller performs closed-loop control based on the real-time airway pressure data detected by the airway pressure monitor. The air-oxygen mixer is controlled by the controllable airflow generator to output the air of the set pressure, the air enters the humidifier, the humidifier warms the air-oxygen mixture to the set temperature, and the treatment is performed by heating the breathing circuit. The gas is delivered to the patient's airway.

In this embodiment, as shown in FIG. 5 , when working in the low-flow oxygen therapy mode, air enters the oxygen generating unit 190 through the air inlet (including filtering) 102 ; the oxygen generating unit 190 adopts VPSA (Vacuum Pressure Swing Adsorption) or PSA (Pressure swing adsorption) The principle of oxygen production is to produce medical oxygen, and the nitrogen adsorbed in the oxygen production process is discharged into the atmosphere through the exhaust port 103; the medical oxygen is input into the patient breathing circuit (nasal oxygen tube) through the patient oxygen supply outlet 106, The gas in the patient's breathing circuit is transported to the patient's lungs through the patient interface for gas exchange; part of the gas discharged from the patient's lungs enters the external atmospheric environment of the human body, and part enters the patient's breathing circuit.

In this embodiment, as shown in FIG. 1 , the system further includes: a monitoring and alarm unit 150, a blood oxygen module communication unit 140, a wireless communication unit 130, and a human-computer interaction unit 160; a monitoring and alarm unit 150 is used to monitor the operation of the system , when the system fails, alarm, and send the alarm category and alarm threshold to the control unit 170; the blood oxygen module communication unit 140 is used to monitor the blood oxygen concentration and pulse rate of the patient in real time, and send the blood oxygen concentration and pulse rate data Send to the control unit 170; the main control unit 170 monitors the blood oxygen concentration of the patient in real time through the blood oxygen communication unit 140, and performs closed-loop oxygen supply control of the blood oxygen concentration with a set blood oxygen concentration, such as 95%, as the control target. The wireless communication unit 130 is used for remote wireless connection to the data center of the hospital; the human-computer interaction unit 160 is used for sending the parameters set by the user to the control unit 170, including the parameters set by the users such as doctors, maintenance personnel and patients; the control unit 170 outputs Parameters such as performance and status are sent to the human-computer interaction unit 160 to provide relevant information to the user.

In combination with the above-mentioned embodiments, the specific workflows of the system under the three operating modes are as follows:

As shown in Figure 1, when the high-flow humidification oxygen therapy working mode is set, the user sets the working mode to high-flow humidification oxygen therapy through the man-machine exchange unit 160, and sets the oxygen concentration and flow rate of the air-oxygen mixed gas, and sets the plus Parameters such as the temperature of the temperature and humidification unit and the temperature of the NTC near the patient end of the patient breathing circuit are sent to the control unit 170. As shown in FIG. 4, the central control unit of the control unit 170 saves the received parameters in the memory. As shown in FIG. 3 and FIG. 4 , the external oxygen source gas enters the proportional valve through the external oxygen source interface 101, and the proportional valve is controlled by the control unit 170 to be fully opened or partially opened, and all or part of the external oxygen source gas is delivered to the air-oxygen mixer. . The air is input from the air inlet (including filter) 102 to become filtered air and delivered to the air-oxygen mixer. The oxygen concentration sensor connected to the air-oxygen mixer monitors the oxygen concentration of the air-oxygen mixed gas in the air-oxygen mixer in real time. The control unit 170 reads the oxygen concentration information of the oxygen concentration sensor at certain time intervals, such as 50 milliseconds. The set oxygen concentration is the control target, the proportional valve opening signal is output to the proportional valve, and the opening of the proportional valve is adjusted so that the oxygen concentration of the air-oxygen mixer is equal to the oxygen concentration set by the user. The air-oxygen mixer outputs the air-oxygen mixed gas to the flow sensor. The flow sensor detects the flow of the air-oxygen mixed gas in real time. The control unit 170 reads the flow information of the flow sensor at certain time intervals, such as 5 milliseconds. The control unit 170 sets the The flow rate is the control target, output the motor control signal to the motor inside the fan, and adjust the speed of the fan so that the flow rate of the air-oxygen mixed gas is equal to the set flow rate. The oxygen mixed gas with the set flow rate enters the heating and humidifying unit, and is heated and humidified to generate the heated and humidified gas, and the heated and humidified gas is connected to the patient breathing circuit through the main ventilation interface 105; The heating control signal and the temperature signal are connected to the heating interface 104, and the heating control signal of the heating port 104 is connected to the interface of the patient's breathing circuit to heat the heating wire of the breathing circuit. The temperature signal of the heating port 104 is provided by the NTC, and the NTC detects the gas close to the patient's interface in real time. The temperature is input to the control unit 170; the NTC inside the heating unit monitors its temperature in real time and outputs a temperature signal. The control unit 170 takes the set temperature of the heating and humidifying unit and the temperature of the NTC near the patient end of the patient breathing circuit as the control target, respectively outputs the heating control signal to the heating wire of the heating and humidifying unit, and outputs the heating control signal to the heating and humidifying unit. The temperature and humidification unit makes the gas temperature signal of the patient interface equal to the set temperature.

As shown in FIG. 1 , when the non-invasive positive pressure mechanical ventilation (mixed oxygen) mode is set, that is, the user sets the working mode to non-invasive positive pressure mechanical ventilation (mixed oxygen) through the man-machine exchange unit 160, and sets the bi-level positive pressure mechanical ventilation Mode parameters, such as inspiratory airway pressure, expiratory airway pressure, etc., set the oxygen concentration of the air-oxygen mixture, set the temperature of the heating and humidification unit and the temperature of the NTC near the patient's breathing circuit. Sent to the control unit 170, as shown in FIG. 3, the control unit 170 stores the accepted parameters in the memory. The external oxygen source gas enters the proportional valve through the external oxygen source interface 101, and the proportional valve is fully or partially opened by the control unit 170 to deliver all or part of the external oxygen source gas to the air-oxygen mixer. The air is filtered by the air inlet 102 (including filtering), and sent to the air-oxygen mixer; the oxygen concentration sensor connected to the air-oxygen mixer monitors the oxygen concentration in the air-oxygen mixer in real time, and the control unit 170 at a certain time interval, For example, if the oxygen concentration information of the oxygen concentration sensor is read in 50 milliseconds, the control unit 170 takes the set oxygen concentration as the control target, outputs the proportional valve opening signal to the proportional valve, and adjusts the opening of the proportional valve, so that the oxygen concentration of the air-oxygen mixer is adjusted. The concentration is equal to the oxygen concentration set by the user. The air-oxygen mixer outputs the air-oxygen mixed gas to the flow sensor, the flow sensor detects the flow of the air-oxygen mixed gas in real time, the air-oxygen mixed gas is input to the fan, the fan runs at a certain speed, and the air-oxygen mixed gas is delivered to Heated humidification unit. The pressure sensor connected to the gas pipeline monitors the pressure of the gas in the airway in real time, and the control unit 170 reads the pressure information of the pressure sensor at certain time intervals, such as 5 milliseconds. The control unit 170 reads the flow rate information of the flow sensor at a certain time interval, such as 5 milliseconds, and discriminates the breathing action of the patient through an algorithm. When the patient's inhalation action is detected, take the set inspiratory phase airway pressure as the control target, output the motor control signal to the motor inside the fan, and adjust the speed of the fan, so that the pressure of the air-oxygen mixture in the airway is equal to the user's Set inspiratory phase airway pressure. When the patient's exhalation is detected, take the set expiratory airway pressure as the control target, output the motor control signal to the motor of the fan, and adjust the speed of the fan so that the pressure of the air-oxygen mixture in the airway is equal to the user-set pressure. Expiratory airway pressure. The air-oxygen mixed gas that reaches the set airway pressure is input to the heating and humidifying unit, and the heating and humidifying unit is connected to the heating interface 104 through a heating wire, which is used to heat the breathing circuit of the patient, and the heating unit feeds back the breathing of the patient through the temperature acquisition signal wire Temperature information for the NTC near the patient end of the circuit. The control unit 170 reads the temperature information of the temperature sensor NTC inside the heating and humidifying unit and the temperature information of the NTC near the patient end of the patient breathing circuit at a certain time interval, such as 20 milliseconds, to set the temperature of the heating and humidifying unit. For the control target, output the heating control signal of the heating and humidifying unit to the heating wire, so that the temperature information of the temperature sensor NTC inside the heating and humidifying unit is equal to the set temperature of the heating and humidifying unit; with the set patient breathing tube The temperature of the NTC near the patient end of the circuit is the control target, and the heating control signal of the heating interface 104 is output, so that the temperature information of the NTC near the patient end of the patient breathing circuit is equal to the set temperature of the NTC near the patient end of the patient breathing circuit. The heated and humidified gas reaching the set temperature is delivered to the main ventilation interface 105 and connected to the patient breathing circuit. The heated and humidified gas reaching the set temperature is delivered to the patient interface, and enters the patient's lungs through the patient interface for gas exchange.

As shown in FIG. 1 , when the low-flow oxygen therapy mode is set, that is, the user sets the working mode to the low-flow oxygen therapy mode through the man-machine exchange unit 160 , and sets the flow rate. This information is sent to the control unit 170 via 161 . As shown in FIG. 6, the control unit 170 stores the accepted parameters in the memory. The control unit 170 controls the air compressor to enter the operating state through the control signal. As shown in Fig. 5, the air compressor inhales the air from the air inlet (including the filter) 102, and the air passes through the muffler to reduce the intake noise. The silenced gas enters the oil-free air compressor, and outputs high-pressure air. The high-pressure air passes through the cooler to reduce the temperature of the high-pressure air, and outputs the high-pressure air to the atomization interface 107 for atomization function; the high-pressure air is input to the air control valve, The control unit 170 outputs a control signal to the valve body of the air control valve, and inputs the high-pressure gas into the air channel and transports it to the adsorption tower for air-oxygen separation. The produced product oxygen enters the oxygen storage tank through the one-way valve; the product oxygen is transported through the air channel To the flow control valve, after passing through the flow control valve, it is input to the oxygen concentration and flow sensor, and the oxygen concentration and flow information of the product oxygen are measured in real time. The product oxygen flowing out from the oxygen concentration and flow sensor enters the solenoid valve, and the main control unit 170 outputs a control signal Stop the solenoid valve from delivering the finished oxygen to the ventilation unit 180, but instead deliver the finished oxygen to the air path, and the pressure sensor is connected to the airway to monitor the pressure information of the finished oxygen in the airway in real time. The main control unit 170 reads the pressure information of the gas in the airway monitored by the pressure sensor at a certain time interval, such as 5 milliseconds, so as to identify the inhalation action of the patient. When the patient inhales, according to the flow parameters set by the user, the control signal is output to the flow control valve, and the flow control valve controls the oxygen supply gas according to the set flow-time curve.

In this embodiment, as shown in FIG. 1 , the oxygen producing unit 190 is provided with a positive air pressure interface 107 and a negative air pressure interface 108 , wherein the positive air pressure interface 107 is used to connect the atomizing device, and the oxygen producing unit 190 provides positive air pressure for the atomizing device. Pressure air source; the negative air pressure interface 108 is used to connect the sputum suction device, and the oxygen generating unit 190 provides a negative pressure air source for the sputum suction device. When working in the suction mode, the external suction device is connected through the suction interface 108, and the suction device is connected to the patient interface. When working in the nebulizing mode, an external nebulizing device is connected through the nebulizing interface 107, and the nebulizing device is connected to the breathing circuit of the patient.

As shown in FIG. 8 , this embodiment also provides a multifunctional respiratory therapy method for use in hospital and home environments, including:

101. The control unit sets different working modes and preset treatment parameters under the different working modes; sends the preset treatment parameters to the oxygen generating unit and the ventilation unit according to the different working modes; the different working modes working modes, including: high-flow humidified oxygen therapy, low-flow oxygen therapy, and non-invasive positive pressure mechanical ventilation working modes;

102. The control unit controls the oxygen production unit to produce oxygen, and delivers the oxygen to the ventilation unit or the patient breathing circuit;

103. When oxygen is delivered to the ventilation unit, the control unit controls the ventilation unit to mix the oxygen/external oxygen source and air delivered by the oxygen generating unit into an air-oxygen mixed gas, and adjusts the actual treatment parameters according to the different working modes. The value is adjusted to the preset treatment parameter value, and then the air-oxygen mixed gas is delivered to the patient's breathing circuit, so that the air-oxygen mixed gas enters the patient's lungs for gas exchange;

104. In the non-invasive positive pressure mechanical ventilation working mode, the ventilation unit mixes the oxygen and air delivered by the oxygen generating unit into an air-oxygen mixed gas, and when the oxygen/air-oxygen mixed gas is delivered to the shown patient breathing circuit , the control unit controls the oxygen generating unit to supply oxygen/air to the patient through the oxygen channel/air channel according to the breathing phase of the patient.

Wherein, the method for the control unit to control the oxygen generating unit to supply oxygen/air to the patient through the oxygen channel/air channel according to the breathing phase of the patient, includes:

The control unit controls the oxygen generating unit to monitor the breathing phase of the patient, the breathing phase includes: inspiratory phase and expiratory phase;

In the inspiratory phase, oxygen is supplied to the patient through the oxygen channel, and air is supplied to the patient through the air channel;

During exhalation, the oxygen channel stops supplying oxygen, and the air channel supplies air to the patient.

Overall beneficial effects:

1. The present invention realizes low/high flow humidified oxygen therapy, non-invasive positive pressure mechanical ventilation, and auxiliary atomization and sputum suction integrated breathing treatment plan, which satisfies the needs of respiratory patients in the acute stage of the disease and the weaning stage corresponding to different disease courses. It reduces the complexity of configuring various treatment equipment for different disease stages.

2. The present invention integrates oxygen generation function, non-invasive positive pressure mechanical ventilation function, oxygen saving function and heating and humidification function, and is suitable for various environments of hospital wards, emergency hospitals, makeshift hospitals and families.

3. The multifunctional respiratory therapy system of the present invention is easy to use, can be set up once according to the doctor's advice, and can be automatically run, automatically monitored, fault alarmed, simple to operate, greatly reduces the workload of medical staff, and improves safety.

4. The modular design of the present invention can improve the utilization rate of equipment, and each module can operate independently, and can also be combined with other respiratory treatment equipment to meet the needs of different treatment stages.

5. The present invention has the function of wireless data connection, which can be connected to the hospital data system to realize monitoring and alarm, provides data records for diagnosis and medical record analysis, and can also be connected to the big data system for in-depth utilization.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. scope.

Claims (9)

1. A multifunctional respiratory therapy system for hospital and home environments, characterized in that, comprising: a control unit (170), a ventilation unit (180), an oxygen production unit (190); The control unit (170) is used to set different working modes and preset treatment parameters under the different working modes; it is used to control the oxygen generating unit (190) and the ventilation unit (180), Adjust the actual treatment parameter value to the preset treatment parameter value according to the different working modes; the different working modes include: high-flow humidification oxygen therapy, low-flow oxygen therapy, and non-invasive positive pressure mechanical ventilation working modes ; The oxygen producing unit (190) is used for producing oxygen and delivering the oxygen to the ventilation unit (180) or the patient breathing circuit; the patient breathing circuit adopted in the non-invasive positive pressure mechanical ventilation working mode includes: Oxygen channel and air channel, the oxygen generating unit (190) supplies oxygen/air to the patient through the oxygen channel/air channel according to the breathing phase of the patient; The ventilation unit (180) is configured to mix the oxygen/external oxygen source and air delivered by the oxygen production unit (190) into an air-oxygen mixed gas, and adjust the concentration of the air-oxygen mixed gas to reach the preset Treatment parameter value; used to adjust the flow of the air-oxygen mixed gas to reach the preset treatment parameter value; used to heat and humidify the air-oxygen mixed gas to generate a heated and humidified gas, so that the heating and humidification The gas enters the patient's breathing circuit, and adjusts the heating and humidifying temperature and the temperature of the patient's breathing circuit to reach the preset treatment parameter value; it is used to monitor the air-oxygen mixed gas pressure value and flow rate value, and adjust the The air-oxygen mixed gas pressure value reaches the preset treatment parameter value. 2. The multifunctional respiratory therapy system for use in hospitals and home environments according to claim 1, wherein the preset therapy parameters in the different working modes include: Preset treatment parameters in the high-flow humidification oxygen therapy working mode, including: air-oxygen mixed gas oxygen concentration, air-oxygen mixed gas flow, heating and humidification temperature, and patient breathing circuit temperature; Preset treatment parameters in low-flow oxygen therapy working mode, including: oxygen flow; Preset treatment parameters in non-invasive positive pressure mechanical ventilation working mode, including: air-oxygen mixed gas oxygen concentration, air-oxygen mixed gas flow, inspiratory airway pressure, expiratory airway pressure, warming and humidifying temperature, patient Breathing circuit temperature. 3. The multifunctional respiratory therapy system for use in hospitals and home environments according to claim 1, wherein the high-flow humidification oxygen therapy working mode comprises: The control unit (170) controls the ventilation unit (180) to mix the oxygen/external oxygen source and air delivered by the oxygen production unit (190) to form an air-oxygen mixed gas, and adjusts the oxygen concentration and flow rate of the air-oxygen mixed gas The value reaches the preset treatment parameter value; The control unit (170) controls the ventilation unit (180) to heat and humidify the air-oxygen mixed gas to generate heated and humidified gas, and then deliver the heated and humidified gas to the patient's breathing circuit; The control unit (170) controls the ventilation unit (180) to adjust the temperature values of the heated humidified gas and the patient breathing circuit to reach the preset treatment parameter value; The control unit (170) controls the ventilation unit (180) to deliver the warmed and humidified gas to the patient breathing circuit. 4. a kind of multifunctional respiratory therapy system for hospital and home environment according to claim 2, is characterized in that, described non-invasive positive pressure mechanical ventilation working mode, comprises: The control unit (170) controls the ventilation unit (180) to mix the oxygen/external oxygen source and air delivered by the oxygen production unit (190) to form an air-oxygen mixed gas, and adjusts the oxygen concentration and flow rate of the air-oxygen mixed gas The value reaches the preset treatment parameter value; The ventilation unit (180) monitors the pressure value and the flow rate value of the air-oxygen mixed gas, and sends the pressure value and the flow rate value to the control unit (170); The control unit (170) judges the patient's expiratory phase or inspiratory phase according to the pressure value and the flow rate value; When it is determined that the inspiratory phase is the inspiratory phase, the control unit (170) controls the ventilation unit (180) to adjust the air-oxygen mixed gas pressure value to be equal to the airway pressure value of the inspiratory phase; During the gas phase, the control unit (170) controls the ventilation unit (180) to adjust the pressure value of the air-oxygen mixed gas to be equal to the airway pressure value in the expiratory phase. 5. The multifunctional respiratory therapy system for hospital and home environments according to claim 1, wherein the low-flow oxygen therapy working mode comprises: The control unit (170) controls the oxygen producing unit (190) to produce oxygen using vacuum pressure swing adsorption or pressure swing adsorption technology; The control unit (170) controls the oxygen generating unit (190) to adjust the oxygen flow value to reach the preset treatment parameter value; A control unit (170) controls the oxygen generating unit (190) to deliver oxygen to the patient breathing circuit. 6. a kind of multifunctional respiratory therapy system for hospital and home environment according to claim 1, is characterized in that, also comprises: a monitoring and alarm unit (150), a blood oxygen module communication unit (140), a wireless communication unit (130), and a human-computer interaction unit (160); The monitoring and alarming unit (150) is used to monitor the operation of the system, give an alarm when the system fails, and send the alarm category and the alarm threshold to the control unit (170); The blood oxygen module communication unit (140) is used to monitor the blood oxygen concentration and pulse rate of the patient in real time, and send the blood oxygen concentration and pulse rate data to the control unit (170); The wireless communication unit (130) is used for remote wireless connection to the data center of the hospital; The human-computer interaction unit (160) is configured to send parameters set by the user to the control unit (170); the control unit (170) outputs performance and state parameters to the human-computer interaction unit (160). 7. A multifunctional respiratory therapy system for hospital and home environments according to claim 6, wherein the oxygen generating unit (190) comprises: Positive air pressure interface (107) and negative air pressure interface (108); The positive air pressure interface (107) is used to connect the atomizing device, and the oxygen generating unit (190) provides a positive pressure air source for the atomizing device; the negative air pressure interface (108) is used to connect the sputum suction device, and the The oxygen generating unit (190) provides a negative pressure air source for the sputum suction device. 8. A multifunctional respiratory therapy method for hospital and home environments, characterized in that, comprising: The control unit sets different working modes and preset treatment parameters under the different working modes; sends the preset treatment parameters to the oxygen generating unit and the ventilation unit according to the different working modes; the different working modes Modes, including: high-flow humidified oxygen therapy, low-flow oxygen therapy, non-invasive positive pressure mechanical ventilation working mode; The control unit controls the oxygen production unit to produce oxygen and deliver the oxygen to the ventilation unit or the patient breathing circuit; When oxygen is delivered to the ventilation unit, the control unit controls the ventilation unit to mix the oxygen/external oxygen source and air delivered by the oxygen generating unit into an air-oxygen mixed gas, and adjusts the actual treatment parameter values according to the different working modes to the preset treatment parameter value, and then the air-oxygen mixed gas is delivered to the patient's breathing circuit, so that the air-oxygen mixed gas enters the patient's lungs for gas exchange; In the non-invasive positive pressure mechanical ventilation working mode, the ventilation unit mixes the oxygen and air delivered by the oxygen generating unit into an air-oxygen mixed gas. When the air-oxygen mixed gas is delivered to the patient's breathing circuit, the control unit controls the The oxygen generating unit supplies oxygen/air to the patient through the oxygen channel/air channel according to the breathing phase of the patient. 9. A multifunctional respiratory therapy method for hospital and home environments according to claim 8, wherein the control unit controls the oxygen production unit to pass the oxygen channel/air channel according to the breathing phase of the patient to be: Patient oxygen/air, including: The control unit controls the oxygen generating unit to monitor the breathing phase of the patient, and the breathing phase includes: an inspiratory phase and an expiratory phase; The inspiratory phase supplies oxygen to the patient through the oxygen channel, and supplies air to the patient through the air channel; In the expiratory phase, the oxygen channel stops supplying oxygen, and the air channel supplies air to the patient.

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