WO2022056965A1 - Dispositif d'assistance à la toux basé sur une soupape de régulation de pression positive/négative électromagnétique et procédé de commande - Google Patents

Dispositif d'assistance à la toux basé sur une soupape de régulation de pression positive/négative électromagnétique et procédé de commande Download PDF

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WO2022056965A1
WO2022056965A1 PCT/CN2020/119259 CN2020119259W WO2022056965A1 WO 2022056965 A1 WO2022056965 A1 WO 2022056965A1 CN 2020119259 W CN2020119259 W CN 2020119259W WO 2022056965 A1 WO2022056965 A1 WO 2022056965A1
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turbine
positive
negative pressure
expectoration
flow
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PCT/CN2020/119259
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English (en)
Chinese (zh)
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戴征
李伟利
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湖南明康中锦医疗科技发展有限公司
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Publication of WO2022056965A1 publication Critical patent/WO2022056965A1/fr

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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. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/105—Filters
    • A61M16/1055—Filters bacterial
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H23/00—Percussion or vibration massage, e.g. using supersonic vibration; Suction-vibration massage; Massage with moving diaphragms
    • A61H23/02—Percussion or vibration massage, e.g. using supersonic vibration; Suction-vibration massage; Massage with moving diaphragms with electric or magnetic drive
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M16/0009—Accessories therefor, e.g. sensors, vibrators, negative pressure with sub-atmospheric pressure, e.g. during expiration
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0057—Pumps therefor
    • A61M16/0066—Blowers or centrifugal pumps
    • A61M16/0069—Blowers or centrifugal pumps the speed thereof being controlled by respiratory parameters, e.g. by inhalation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0057—Pumps therefor
    • A61M16/0075—Bellows-type
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/105—Filters
    • A61M16/106—Filters in a path
    • A61M16/1065—Filters in a path in the expiratory path
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/0027—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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
    • A61M2016/0033—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical
    • A61M2016/0039—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical in the inspiratory circuit
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
    • A61M2016/0033—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical
    • A61M2016/0042—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical in the expiratory circuit

Definitions

  • the invention belongs to the technical field of medical devices, and in particular relates to a phlegm expectoration device and a control method based on a positive and negative pressure electromagnetic regulating valve.
  • the expectoration device can control the airflow direction of the turbine air source components through electric current, thereby adjusting the positive and negative therapeutic pressure output by the patient.
  • the traditional expectoration equipment uses a valve group to control the pressure and flow of the turbine air pressure source components.
  • the valve group includes two or more pressure solenoid valves, as well as a control system of multiple sets of pressure solenoid valves. The overall airway principle of the equipment system complex, greatly increasing the cost of the product.
  • Chinese patent application CN111529867A discloses a mechanically assisted expectoration method and system in which the negative cough pressure is proportional to the cough airflow.
  • the system includes a expectoration controller, a fan, a switching valve and a expectoration pipeline, wherein the fan, the atmosphere and the cough The sputum line is connected to the switching valve for adjustment.
  • the negative pressure of expectoration in the phase of expectoration and exhausting is proportional to the airflow of expectoration.
  • the cough airflow is the largest, and the corresponding airway negative pressure is the highest; during the continuous process of the cough exhaust phase, as the cough airflow decreases, the cough negative pressure also decreases proportionally.
  • the system controls the airflow of expectoration through the expectoration negative pressure in the expectoration and exhaust phase.
  • the entire control system monitors the relationship between pressure and time, flow and time.
  • the airway structure of the overall equipment system is not simple, which greatly increases the product cost.
  • the present invention provides a phlegm expectoration device and a control method based on a positive and negative pressure electromagnetic regulating valve, aiming to solve the problem of the complex airway and control system of the existing phlegm expectoration equipment overall equipment system.
  • the present invention provides a phlegm expectoration device based on a positive and negative pressure electromagnetic regulating valve, comprising:
  • a turbine used to provide an air source for the expectoration device, the turbine includes a turbine air inlet and a turbine air outlet, and the intake flow of the turbine air inlet and the turbine air outlet is controlled by a turbine drive circuit;
  • the positive and negative pressure electromagnetic regulating valve is communicated with the turbine air inlet and the turbine air outlet, and is used for real-time detection and adjustment of the air source pressure and flow of the air inlet pipeline of the expectoration equipment;
  • the positive and negative pressure electromagnetic regulating valve includes a A flow sensor for detecting the gas flow rate of the intake pipe of the expectoration equipment, and a pressure sensor for detecting the air source pressure of the intake pipe of the expectoration equipment;
  • the control system includes a processor, and the turbine drive circuit, the flow sensor, and the pressure sensor respectively feed back the air source flow of the air intake pipeline of the expectoration equipment and the current that controls the positive and negative pressure electromagnetic regulating valve to the processor, forming a system based on the air source.
  • the closed-loop control system of flow, air source pressure and current feedback controls the pressure and flow of the air intake pipeline of the expectoration equipment.
  • the positive and negative pressure electromagnetic regulating valve includes a valve body with an accommodating cavity, at least two valve cores arranged in sequence along the central axis of the valve body, and a valve body drive circuit for controlling the conduction of the valve cores , a first channel favorable for gas circulation is arranged between the valve cores, and the first channel is respectively communicated with the turbine air inlet and the turbine air outlet during the movement of the valve core.
  • valve body further includes an output port arranged on one side of the valve body, an air inlet and an air outlet arranged on the other side of the valve body, and the output port is communicated with the first passage,
  • the air inlet communicates with the turbine air inlet, and the air outlet communicates with the turbine air outlet.
  • valve body drive circuit includes a voice coil motor, a voice coil motor bracket for installing the voice coil motor in the valve body, and the voice coil motor is connected in communication with the processor.
  • a spring sheet for buffering is also provided between the valve core and the voice coil motor.
  • the flow sensor and the pressure sensor are respectively arranged close to the output port.
  • the expectoration device further includes a sputum recovery bottle and a patient interface disposed near the air inlet pipeline of the expectoration device.
  • the present invention also provides a control method for expectoration equipment based on positive and negative pressure electromagnetic regulating valve, comprising:
  • the processor is initialized; the positive pressure working mode and the negative pressure working mode of the turbine are set; the turbine is adjusted to the specified standard pressure value P;
  • the pressure sensor collects the pressure value P(t) of the expectoration equipment pipeline in real time, and sends the collected pressure value P(t) to the processor;
  • the flow sensor collects the flow value I(t) of the expectoration equipment pipeline, and sends the The collected flow value I(t) is sent to the processor, and the detected pressure value P(t) is compared with the standard pressure value P;
  • step S02 also includes:
  • the processor judges the flow direction of the gas in the intake pipe of the expectoration equipment through the flow value I(t) collected in real time; according to the flow direction of the gas in the intake pipe of the expectoration equipment, judges the inhalation or exhalation state of the user;
  • the processor controls the turbine to use the positive pressure working mode
  • the processor controls the turbine to use a negative pressure working mode.
  • step S02 the processor sending the control signal to the positive and negative pressure electromagnetic regulating valve includes:
  • the processor sends digital information or analog information to the positive and negative pressure solenoid regulating valve.
  • the turbine drive circuit, the flow sensor and the pressure sensor are respectively connected in communication with the processor, and the collected air source flow, air source pressure and control
  • the relevant data of the current of the positive and negative pressure electromagnetic regulating valve is fed back to the processor to form a closed-loop system based on the air source flow, air source pressure and current feedback, which can accurately adjust the air source flow, air source pressure, Parameters such as the running direction of the gas can output positive pressure and negative pressure treatment pressure to the patient to change the treatment force in the preset direction (horizontal direction or vertical direction).
  • the phlegm expectoration device of the present solution does not need to set up a complicated piping system or a control system, has a simple structure, and reduces the product cost.
  • the positive pressure working mode when the patient is in the inhalation state, the positive pressure working mode is activated; when the patient is in the exhaling state, the negative pressure working mode is activated; in one breathing cycle, In the positive pressure mode, the air source is introduced into the patient's breathing system through the air intake pipeline, and the negative pressure mode discharges the sputum from the patient's body through the air intake pipeline; during this process, the pressure value P(t) detected by the pressure sensor and the standard pressure Compare with the value P; control the conduction of positive and negative pressure electromagnetic regulating valve, valve increase or valve decrease working conditions through the set judgment conditions, and then control the pressure and flow of the gas in the intake pipeline; collect through the flow sensor The flow value of the air inlet determines the flow direction of the gas in the intake pipe, and then controls the flow direction of the gas in the intake pipe.
  • Fig. 1 is the structural block diagram of the expectoration equipment of the present invention
  • Fig. 2 is the structure diagram of the positive and negative pressure electromagnetic regulating valve of the present invention
  • FIG. 3 is a schematic diagram of the turbine and the positive and negative pressure electromagnetic regulating valve of the present invention in a positive pressure working mode
  • FIG. 4 is a schematic diagram of the turbine and the positive and negative pressure electromagnetic regulating valve of the present invention in a negative pressure working mode
  • Fig. 5 is a flow chart of the control method of the expectoration device of the present invention.
  • the present invention provides a phlegm expectoration device based on a positive and negative pressure electromagnetic regulating valve, including:
  • the turbine 1 is used to provide an air source for the expectoration equipment.
  • the turbine 1 includes a turbine air inlet 11 and a turbine air outlet 12, and the intake flow of the turbine air inlet 11 and the turbine air outlet 12 is controlled by the turbine drive circuit 13;
  • the positive and negative pressure electromagnetic regulating valve 2 is communicated with the turbine air inlet 11 and the turbine air outlet 12, and is used for real-time detection and adjustment of the air source pressure and flow of the air inlet pipeline 3 of the expectoration equipment;
  • the positive and negative pressure electromagnetic regulating valve 2 includes a A flow sensor 4 for detecting the gas flow rate of the air inlet pipeline 3 of the expectoration equipment, and a pressure sensor 5 for detecting the gas source pressure of the air inlet pipeline 3 of the expectoration equipment;
  • the control system 6 includes a processor 61, the turbine drive circuit 13, the flow sensor 4, and the pressure sensor 5 respectively feed back the air source flow of the air intake pipeline 3 of the expectoration equipment and the current that controls the positive and negative pressure electromagnetic regulating valve 2 to the processor 61 , to form a closed-loop control system based on air source flow, air source pressure and current feedback, and then control the pressure and flow of the air inlet pipeline 3 of the expectoration equipment.
  • expectoration equipment is used to treat respiratory system diseases, effectively remove respiratory system secretions, reduce bacterial infection, and alleviate or prevent the occurrence of diseases such as pneumonia, lung abscess, and atelectasis.
  • a therapeutic force that periodically changes in a specific direction is generated on the surface of the patient's body.
  • the percussion and tremor generated by the vertical therapeutic force can promote the relaxation and liquefaction of mucus and metabolites in the respiratory tract; the directional pushing and tremor generated by the horizontal therapeutic force help the liquefied mucus to be excreted in the selected direction.
  • the expectoration device is an air pressure expectoration device, which can output positive pressure and negative pressure treatment pressure to the patient, so as to change the treatment force in a preset direction (horizontal direction or vertical direction).
  • the expectoration device includes a turbine 1, and the turbine air inlet 11 can generate negative pressure suction to suck gas into the turbine 1; after the gas is accelerated or decelerated in the turbine 1 to a specified output power, it is discharged through the turbine air outlet 12.
  • the turbine air inlet 11 and the turbine air outlet 12 are controlled by the turbine drive circuit 13 .
  • the turbine driving circuit 13 can be optionally a printed circuit board, a PCB board, or the like.
  • the turbine air inlet 11 and the turbine air outlet 12 are respectively connected to the positive and negative pressure electromagnetic regulating valve 2. By controlling the current direction of the positive and negative pressure electromagnetic regulating valve 2, the airflow running direction and pressure of the air intake pipeline 3 of the expectoration equipment are adjusted.
  • the positive and negative pressure electromagnetic regulating valve 2 includes a flow sensor 4 and a pressure sensor 5 .
  • the flow sensor 4 is used for real-time detection of the air source pressure and flow rate of the air intake pipeline 3 of the expectoration equipment; the pressure sensor 5 is used to detect the air source pressure of the air intake pipeline 3 of the expectoration device.
  • the detected flow rate and gas source pressure are respectively sent to the processor 61 of the control system 6 .
  • the processor 61 includes an algorithm processor and a memory processor.
  • the algorithm processor performs logical operations on the flow rate and gas source pressure, and then stores the calculation results in the storage processor for sample retrieval or analysis.
  • the turbine drive circuit 13, the flow sensor 4, and the pressure sensor 5 are respectively connected in communication with the processor 61, and the collected air source flow, air source pressure, and the current of the positive and negative pressure electromagnetic regulating valve 2 are collected.
  • the relevant data is fed back to the processor 61 to form a closed-loop system based on the air source flow rate, air source pressure and current feedback to precisely adjust the air source flow rate, air source pressure, gas running direction and other parameters of the air supply pipeline 3 of the expectoration equipment, Positive pressure and negative pressure treatment pressure can be output to the patient to change the treatment force in the preset direction (horizontal direction or vertical direction).
  • the phlegm expectoration device of the present solution does not need to set up a complicated piping system or a control system, has a simple structure, and reduces the product cost.
  • the positive and negative pressure electromagnetic regulating valve 2 includes a valve body 21 with an accommodating cavity, and at least two valves arranged in sequence along the central axis of the valve body 21
  • the spool 22 and the valve body drive circuit for controlling the conduction of the spool 22 are provided with a first passage 23 between the spools 22 that is conducive to gas circulation.
  • the port 11 and the turbine air outlet 12 communicate with each other.
  • the valve body 21 is provided with an accommodating cavity, and a plurality of valve cores 22 are arranged in sequence along the central axis of the valve body 21 in the accommodating cavity, and the first passage 23 is provided between the valve cores 22 .
  • the first passage 23 is in communication with the turbine outlet 12;
  • the turbine 1 is in the negative pressure mode, the first passage 23 is in communication with the turbine air inlet 11;
  • the parameters of the conduction current such as the magnitude and direction of the current, can change the running direction and flow of the gas in the valve body 21, and then adjust the positive pressure mode or negative pressure mode at the patient interface through the inhalation or exhalation state of the patient. , and the pressure direction, magnitude and other parameter values or parameter ranges corresponding to the working mode. According to the individual differences of patients, adapt or customize the parameter values or parameter ranges of the positive pressure mode or negative pressure mode adapted to the patient.
  • the valve body 21 further includes an output port 24 provided on one side of the valve body 21, an air inlet 25 and an air outlet 26 provided on the other side of the valve body 21, and the output port 24 In communication with the first passage 23 , the air inlet 25 is in communication with the turbine air inlet 11 , and the air outlet 26 is in communication with the turbine air outlet 12 .
  • One side of the valve body 21 is provided with an output port 24
  • the other side corresponding to the output port 24 is provided with an air inlet port 25 and an air outlet port 26 .
  • the output port 24 is located between the air inlet 25 and the air outlet 26
  • the air inlet 25 communicates with the turbine air outlet 26
  • the air outlet 26 communicates with the turbine air outlet 26 .
  • the corresponding turbine 1 when the patient is in the inhalation state, the corresponding turbine 1 is in the positive pressure working mode; the gas enters the accommodating cavity of the valve body 21 from the end of the valve body 21 , and flows to the air inlet through the first valve core 22 25. Enter the turbine 1 through the turbine air inlet 11 to adjust the power.
  • the gas flows to the first channel 23 through the turbine air outlet 12, and then flows to the air intake pipeline 3 of the expectoration equipment through the output port 24. , until it flows into the patient's respiratory system.
  • the corresponding turbine 1 When the patient is in the state of exhalation, the corresponding turbine 1 is in the negative pressure working mode; the negative pressure of the turbine 1 discharges expectoration and expectoration gas from the patient's breathing system, and flows to the first channel 23 of the valve body 1 through the output port 24, and then flows to the first channel 23 of the valve body 1 through the output port 24. Enter the turbine 1 through the turbine air inlet 11 to adjust the power. When the power is adjusted to the specified power, the gas passes through the turbine air outlet 12 and the air outlet 26, and then passes through another valve body 22. The other end of the valve body is discharged.
  • the flow sensor 4 and the pressure sensor 5 are respectively disposed close to the output port 24 to improve the detection accuracy of real-time collection and detection of the air source pressure and flow of the air inlet pipeline 3 of the expectoration equipment.
  • the valve body drive circuit includes a voice coil motor 7 and a voice coil motor bracket 71 for installing the voice coil motor 7 in the valve body 21 , and the voice coil motor 7 is connected to the processor 61 in communication .
  • the voice coil motor 7 is installed in the accommodating cavity of the valve body 1 through the voice coil motor bracket 71 , and is arranged along the central axis of the valve body 1 and in a direction away from the valve core 22 .
  • the voice coil motor 7 is a special type of drive motor, which has the characteristics of simple structure, small volume, high speed, high acceleration and fast response. Its working principle is that the energized coil (conductor) is placed in the magnetic field to generate a force, and the magnitude of the force is proportional to the current applied to the coil, thereby changing the magnitude and direction of the conduction current of the positive and negative pressure electromagnetic regulating valve 2 .
  • a spring sheet 8 for buffering is also provided between the valve core 22 and the voice coil motor 7 .
  • the spring piece 8 can prevent the valve core 22 from damaging the voice coil motor 7 .
  • the expectoration device further includes a sputum recovery bottle 9 and a patient interface 10 disposed near the air inlet pipeline 3 of the expectoration device.
  • the sputum recovery bottle 9 is set close to the patient's mouth.
  • the expectoration device discharges the cough fluid from the patient's respiratory system to the sputum recovery bottle 9.
  • the patient interface 10 is used to display the breathing state, positive and negative pressure working mode, pressure direction, size, etc. Parameter value or parameter range. Or according to the individual differences of patients, the above-mentioned parameter values or parameter ranges can be customized and adjusted.
  • the present invention also provides a control method for expectoration equipment based on positive and negative pressure electromagnetic regulating valve, including:
  • the processor 61 is initialized; the positive pressure working mode and the negative pressure working mode of the turbine 1 are set; the turbine 1 is adjusted to the specified standard pressure value P;
  • the control system is initialized, and the processor 61 is initialized; the conditions for starting the positive pressure working mode and the negative pressure working mode of the turbine 1 are set.
  • the turbine 1 when the patient inhales, the turbine 1 is in a positive pressure working mode; when the patient exhales, the turbine 1 is in a negative pressure working mode.
  • the gas volume and pressure in the patient's lungs gradually increase; during inhalation, the gas volume and pressure in the patient's lungs gradually decrease; during the cycle of inspiration and expiration, the gas volume and pressure in the lungs,
  • the pressure forms a parabola, and the state of inhalation or exhalation is judged by the slope of the parabola.
  • the slope K ⁇ 0 it is judged as an inspiratory state; when the slope K>0, it is judged as an expiratory state.
  • the slope is used as the judgment condition for starting the positive pressure working mode and the negative pressure working mode.
  • the turbine 1 adjusts the corresponding pressure value by adjusting the rotational speed.
  • the processor 61 When the processor 61 is initialized, the turbine 1 is adjusted to a specified rotational speed, and then the standard pressure value P is output.
  • the pressure sensor 5 collects the pressure value P(t) of the air intake pipeline 3 of the expectoration equipment in real time, and sends the collected pressure value P(t) to the processor 61;
  • the flow sensor 4 collects the flow value I of the expectoration equipment pipeline (t), sending the collected flow value I(t) to the processor 61, and comparing the detected pressure value P(t) with the standard pressure value P;
  • the pressure sensor 5 collects the pressure value P(t) and the flow value I(t) of the intake line 3 near the output port 24 in real time, and sends the collected P(t) and I(t) to the processor 61, and the detected The pressure value P(t) is compared with the standard pressure value P;
  • the positive pressure working mode when the patient is in the inhalation state, the positive pressure working mode is set; when the patient is in the exhaling state, the negative pressure working mode is set; in one breathing cycle, In the positive pressure mode, the air source is introduced into the patient's breathing system through the air intake pipeline 3, and the negative pressure mode discharges the sputum in the patient's body through the air intake pipeline 3; in this process, according to the pressure value P(t) detected by the pressure sensor 5 Compare with the standard pressure value P; control the conduction of the positive and negative pressure electromagnetic regulating valve 2, valve increase or valve decrease working conditions through the set judgment conditions, and then control the pressure and flow of the gas in the intake pipe 3 ; Determine the flow direction of the gas in the intake pipeline by the flow value collected by the flow sensor 4, and then control the flow direction of the gas in the intake pipeline 3.
  • control signal sent by the processor 61 to the positive and negative pressure electromagnetic regulating valve 2 includes:
  • the processor 61 sends digital information or analog information to the positive and negative pressure electromagnetic regulating valve 2, thereby adjusting the increase or decrease of the valve of the positive and negative pressure electromagnetic regulating valve 2.
  • the digital signal can be selected as a current of 0 to 5 mA, a standard current value or current range for comparison is set, and the real-time collected current is compared with the standard current value or current range, and when a set condition is satisfied , as the starting condition for judging valve increase; when another set condition is met, as the starting condition for judging valve reduction.
  • the digital signal can be selected as a voltage of 0-10V.
  • the analog signal can be selected as frequency signal, temperature signal, etc.
  • the output histogram, or the high and low levels is used as the starting condition for judging the increase or decrease of the valve.
  • step S02 also includes:
  • the processor 61 judges the flow direction of the gas in the air inlet pipeline 3 of the expectoration equipment through the flow value I(t) collected in real time;
  • the processor 61 controls the turbine 1 to adopt the positive pressure working mode
  • the processor 61 controls the turbine 1 to use the negative pressure working mode.
  • the processor 61 judges the state of the user's inhalation or exhalation through the flow value I(t) collected in real time.
  • the user's inhalation or exhalation state is determined by collecting the flow direction of the gas.
  • a direction sensor is provided in the air intake pipeline 3, the direction sensor senses the flow direction of the gas, and sends the collected data to the processor 61 to determine the current user's inhalation or exhalation state.
  • the state of inhalation or exhalation can be judged by the graph generated by the breathing process and the slope of the graph.
  • the expectoration equipment is set as a wearable expectoration vest, and the air intake pipeline 3 is communicated with the expectoration vest.
  • the back of the expectoration vest is aimed at the expectoration site, which is helpful for the auxiliary treatment of cough symptoms and improves the expectoration and expectoration effects of the expectoration equipment.

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  • Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
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  • Animal Behavior & Ethology (AREA)
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  • General Health & Medical Sciences (AREA)
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  • Engineering & Computer Science (AREA)
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  • Rehabilitation Therapy (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

Sont divulgués dans la présente invention un dispositif d'assistance à la toux basé sur une soupape de régulation de pression positive/négative électromagnétique et un procédé de commande. Le dispositif d'assistance à la toux comprend : une turbine comprenant une entrée d'air de turbine et une sortie d'air de turbine, l'écoulement d'air de l'entrée d'air de turbine et de la sortie d'air de turbine étant régulé par un circuit d'entraînement de turbine ; une soupape de régulation de pression positive/négative électromagnétique en communication avec l'entrée d'air de turbine et la sortie d'air de turbine et comprenant un capteur d'écoulement et un capteur de pression ; et un système de commande, comprenant un processeur, le circuit d'entraînement de turbine, le capteur d'écoulement et le capteur de pression renvoyant respectivement au processeur l'écoulement de source d'air d'une conduite d'entrée d'air du dispositif d'assistance à la toux et le courant pour commander la soupape de régulation de pression positive/négative électromagnétique, pour former un système de commande en boucle fermée basé sur l'écoulement de source d'air, la pression de source d'air et la rétroaction de courant, ce qui permet de réguler la pression et l'écoulement de la conduite d'entrée d'air du dispositif d'assistance à la toux. Le dispositif d'assistance à la toux selon la présente invention n'a pas besoin de comprendre de système de tuyaux complexes ni de système de commande et présente une structure simple, de sorte que les coûts de production sont réduits.
PCT/CN2020/119259 2020-09-15 2020-09-30 Dispositif d'assistance à la toux basé sur une soupape de régulation de pression positive/négative électromagnétique et procédé de commande WO2022056965A1 (fr)

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