WO2022056965A1 - Cough assist device based on electromagnetic positive/negative pressure regulating valve and control method - Google Patents

Cough assist device based on electromagnetic positive/negative pressure regulating valve and control method Download PDF

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Publication number
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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French (fr)
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/en

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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)
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Abstract

Disclosed in the present invention are a cough assist device based on an electromagnetic positive/negative pressure regulating valve and a control method. The cough assist device comprises: a turbine comprising a turbine air inlet and a turbine air outlet, the air flow of the turbine air inlet and the turbine air outlet being controlled by a turbine driving circuit; an electromagnetic positive/negative pressure regulating valve communicated with the turbine air inlet and the turbine air outlet and comprising a flow sensor and a pressure sensor; and a control system, comprising a processor, the turbine driving circuit, the flow sensor, and the pressure sensor respectively feeding back to the processor the air source flow of an air inlet pipeline of the cough assist device and the current for controlling the electromagnetic positive/negative pressure regulating valve, to form a closed-loop control system based on the air source flow, air source pressure, and current feedback, thereby controlling the pressure and flow of the air inlet pipeline of the cough assist device. The cough assist device of the present invention does not need to be provided with a complex pipe system or control system and is simple in structure, such that product costs are reduced.

Description

一种基于正负压电磁调节阀的咳痰设备及控制方法A kind of expectoration equipment and control method based on positive and negative pressure electromagnetic regulating valve 技术领域technical field
本发明属于医疗器械技术领域，具体涉及一种基于正负压电磁调节阀的咳痰设备及控制方法。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.
背景技术Background technique
咳痰设备可通过电流控制涡轮气压源部件的气流方向，进而调节患者输出的正负治疗压力。传统的咳痰设备采用阀组控制涡轮气压源部件的压力大小和流量，该阀组包括两个及以上的压力电磁调节阀，以及多套压力电磁阀的控制系统，整体的设备系统气道原理复杂，极大地增加产品成本。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.
中国专利申请CN111529867A公开了一种咳嗽负压和咳嗽气流成比例的机械辅助咳痰方法及系统，该系统包括咳痰控制器、风机、切换阀和咳痰管路，其中，风机、大气和咳痰管路与进行调节的切换阀连接。咳痰排气相的咳痰负压与咳痰气流成正比变化关系。在排气相的开始点，咳嗽气流最大，对应的气道负压最高；在咳嗽排气相的持续过程中，随着咳嗽气流的递减，咳嗽负压也成比例的递降。该系统通过咳痰排气相的咳痰负压控制咳痰的气流，整个控制系统监测压力与时间、流量与时间的变化关系，整体设备系统气道结构不简单，极大地增加产品成本。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. At the beginning of the exhaust phase, 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.
发明内容SUMMARY OF THE INVENTION
为了克服现有技术中的问题，本发明提供一种基于正负压电磁调节阀的咳痰设备及控制方法，旨在解决现有的咳痰设备整体设备系统气道、控制系统复杂的问题。In order to overcome the problems in the prior art, 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.
为了实现上述目的，本发明通过以下技术方案实现：In order to achieve the above object, the present invention is achieved through the following technical solutions:
本发明提供一种基于正负压电磁调节阀的咳痰设备，包括：The present invention provides a phlegm expectoration device based on a positive and negative pressure electromagnetic regulating valve, comprising:
涡轮，用于为咳痰设备提供气源，所述涡轮包括涡轮进气口、涡轮出气口，所述涡轮进气口、涡轮出气口的进气流量通过涡轮驱动电路控制；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;
正负压电磁调节阀，与所述涡轮进气口、涡轮出气口连通，用于实时检测、调节咳痰设备进气管路的气源压力、流量；所述正负压电磁调节阀包括用于检测咳痰设备进气管路气体流量的流量传感器、用于检测咳痰设备进气管路气源压力的压力传感器；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;
控制系统，包括处理器，所述涡轮驱动电路、流量传感器、压力传感器分别将咳痰设备进气管路的气源流量、控制正负压电磁调节阀的电流反馈给处理器，形成一个基于气源流量、气源压力以及电流反馈的闭环控制系统，进而对咳痰设备进气管路的压力和流量进行控制。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.
进一步地，所述正负压电磁调节阀包括具有容置腔的阀体、沿所述阀体的中心轴依次布置的至少两个阀芯，以及用于控制阀芯导通的阀体驱动电路，所述阀芯之间设置利于气体流通的第一通道，所述第一通道在阀芯的运动过程中分别与所述涡轮进气口、涡轮出气口连通。Further, 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.
进一步地，所述阀体还包括设置于所述阀体一侧的输出口、设置于所述阀体另一侧的进气口和出气口，所述输出口与所述第一通道连通，所述进气口与所述涡轮进气口连通，出气口与所述涡轮出气口连通。Further, the 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.
进一步地，所述阀体驱动电路包括音圈电机、将所述音圈电机安装于所述阀体内的音圈电机支架，所述音圈电机与所述处理器通信连接。Further, the 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.
进一步地，所述阀芯与所述音圈电机之间还设置用于缓冲的弹簧片。Further, a spring sheet for buffering is also provided between the valve core and the voice coil motor.
进一步地，所述流量传感器、压力传感器分别靠近所述输出口设置。Further, the flow sensor and the pressure sensor are respectively arranged close to the output port.
进一步地，咳痰设备还包括靠近所述咳痰设备进气管路设置的痰液回收瓶、患者界面。Further, the expectoration device further includes a sputum recovery bottle and a patient interface disposed near the air inlet pipeline of the expectoration device.
本发明还提供一种基于正负压电磁调节阀的咳痰设备控制方法，包括：The present invention also provides a control method for expectoration equipment based on positive and negative pressure electromagnetic regulating valve, comprising:
S01，处理器初始化；设定涡轮的正压工作模式、负压工作模式；涡轮调节至指定的标准压力值P；S01, 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;
S02，压力传感器实时采集咳痰设备管路的压力值P(t)，将采集的压力值P(t)发送至处理器；流量传感器采集咳痰设备管路的流量值I(t)，将采集的流量值I(t)发送至处理器，将检测的压力值P(t)与标准压力值P进行比对；S02, 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;
若P(t)>P，处理器发送控制信号至正负压电磁调节阀，控制正负压电磁调节阀的阀门减小，直至P(t)＝P；If P(t)>P, the processor sends a control signal to the positive and negative pressure electromagnetic regulating valve, and controls the valve of the positive and negative pressure electromagnetic regulating valve to decrease until P(t)=P;
若P(t)<P，处理器发送控制信号至正负压电磁调节阀，控制正负压电磁调节阀的阀门增大，直至P(t)＝P；If P(t)<P, the processor sends a control signal to the positive and negative pressure electromagnetic regulating valve, and the valve that controls the positive and negative pressure electromagnetic regulating valve increases until P(t)=P;
若P(t)＝P，则维持当前状态。If P(t)=P, the current state is maintained.
进一步地，步骤S02还包括：Further, step S02 also includes:
处理器通过实时采集的流量值I(t)，判断咳痰设备进气管路气体的流动方向；根据咳痰设备进气管路气体的流动方向，判断用户吸气或呼气的状态；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;
若用户为吸气状态时，处理器控制涡轮采用正压工作模式；If the user is in the inhalation state, the processor controls the turbine to use the positive pressure working mode;
若用户为呼气状态时，处理器控制涡轮采用负压工作模式。If the user is in an exhalation state, the processor controls the turbine to use a negative pressure working mode.
进一步地，步骤S02中，处理器发送控制信号至正负压电磁调节阀包括：Further, in step S02, the processor sending the control signal to the positive and negative pressure electromagnetic regulating valve includes:
处理器发送数字信息或模拟信息至正负压电磁调节阀。The processor sends digital information or analog information to the positive and negative pressure solenoid regulating valve.
本发明的有益效果如下：The beneficial effects of the present invention are as follows:
本发明的基于正负压电磁调节阀的咳痰设备，涡轮驱动电路、流量传感器、压力传感器分别与处理器通信连接，将采集的咳痰设备进气管路的气源流量、气源压力、控制正负压电磁调节阀的电流的相关数据反馈至处理器，形成一个基于气源流量、气源压力以及电流反馈的闭环系统，精确调节咳痰设备进气管路的气源流量、气源压力、气体的运行方向等参数，可向患者输出正压、负压治疗压力，用来改变预设方向(水平方向或垂直方向)的治疗力。In the expectoration equipment based on the positive and negative pressure electromagnetic regulating valve of the present invention, 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).
进一步地，患者吸气时，输出正压治疗压力，垂直方向治疗力产生叩击、震颤可促使呼吸道粘液和代谢物松弛和液化；患者呼气时，水平方向治疗力产生的定向推挤、震颤帮助已液化的粘液按照选择的方向排除体外。相比于现有技术，本方案的咳痰设备不需要设置复杂的管道系统或控制系统，结构简单，降低产品成本。Further, when the patient inhales, the positive pressure treatment pressure is output, and the vertical treatment force produces percussion and tremor, which can promote the relaxation and liquefaction of mucus and metabolites in the respiratory tract; when the patient exhales, the directional push and tremor produced by the horizontal treatment force Helps liquefied mucus out of the body in the direction of choice. Compared with the prior art, 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.
本发明的基于正负压电磁调节阀的咳痰设备的控制方法，患者处于吸气状态时，启动正压工作模式；患者处于呼气状态时，启动负压工作模式；在一个呼吸周期内，正压模式将气源通过进气管路导入患者呼吸系统，负压模式将患者体内的痰液通过进气管路排出体外；在此过程中，根据压力传感器检测的压力值P(t)与标准压力值P进行比对；通过设定的判断条件控制正负压电磁调节阀的导通、阀门增大或阀门减少的工况，进而控制进气管路内气体的压力和流量大小；通过流量传感器采集的流量值判断进气管路的气体流动方向，进而控制进气管路内气体的流动方向。In the control method of the expectoration equipment based on the positive and negative pressure electromagnetic regulating valve of the present invention, 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.
附图说明Description of drawings
图1为本发明的咳痰设备的结构框图；Fig. 1 is the structural block diagram of the expectoration equipment of the present invention;
图2为本发明的正负压电磁调节阀的结构图；Fig. 2 is the structure diagram of the positive and negative pressure electromagnetic regulating valve of the present invention;
图3为本发明的涡轮与正负压电磁调节阀在正压工作模式的原理图；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;
图4为本发明的涡轮与正负压电磁调节阀在负压工作模式的原理图；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;
图5为本发明的咳痰设备控制方法的流程图。Fig. 5 is a flow chart of the control method of the expectoration device of the present invention.
附图标记如下：The reference numbers are as follows:
1、涡轮；2、正负压电磁调节阀；3、进气管路；4、流量传感器；5、压力传感器；6、控制系统；7、音圈电机；8、弹簧片；9、痰液回收瓶；10、患者界面；11、涡轮进气口；12、涡轮出气口；13、涡轮驱动电路；21、阀体；22、阀芯；23、第一通道；24、输出口；25、进气口；26、出气口；61、处理器；71、音圈电机支架。1. Turbine; 2. Positive and negative pressure solenoid valve; 3. Intake pipeline; 4. Flow sensor; 5. Pressure sensor; 6. Control system; 7. Voice coil motor; 8. Leaf spring; 9. Sputum recovery bottle; 10, patient interface; 11, turbine air inlet; 12, turbine air outlet; 13, turbine drive circuit; 21, valve body; 22, valve core; 23, first channel; 24, output port; 25, inlet Air port; 26, air outlet; 61, processor; 71, voice coil motor bracket.
具体实施方式detailed description
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图和具体实施例，对本发明进行进一步详细说明。In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
参照图1，本发明提供一种基于正负压电磁调节阀的咳痰设备，包括：Referring to Figure 1, the present invention provides a phlegm expectoration device based on a positive and negative pressure electromagnetic regulating valve, including:
涡轮1，用于为咳痰设备提供气源，涡轮1包括涡轮进气口11、涡轮出气口12，涡轮进气口11、涡轮出气口12的进气流量通过涡轮驱动电路13控制；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;
正负压电磁调节阀2，与涡轮进气口11、涡轮出气口12连通，用于实时检测、调节咳痰设备进气管路3的气源压力、流量；正负压电磁调节阀2包括用于检测咳痰设备进气管路3气体流量的流量传感器4、用于检测咳痰设备进气管路3气源压力的压力传感器5；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;
控制系统6，包括处理器61，涡轮驱动电路13、流量传感器4、压力传感器5分别将咳痰设备进气管路3的气源流量、控制正负压电磁调节阀2的电流反馈给处理器61，形成一个基于气源流量、气源压力以及电流反馈的闭环控制系统，进而对咳痰设备进气管路3的压力和流量进行控制。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.
具体地，咳痰设备用于治疗呼吸系统疾病，有效清除呼吸系统分泌物，减少细菌感染，减轻或防止肺炎、肺脓肿、肺不张等疾病的发生。改善肺部血液循环，预防静脉淤滞，松弛呼吸肌，改善全身张力，增强呼吸肌力产生咳嗽反射，有利于机体康复。根据临床胸部物理治疗原理，在病人身体表面产生特定方向周期变化的治疗力。其中，垂直方向治疗力产生叩击、震颤可促使呼吸道粘液和代谢物松弛和液化；水平方向治疗力产生的定向推挤、震颤帮助已液化的粘液按照选择 的方向排除体外。Specifically, 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. Improve pulmonary blood circulation, prevent venous stasis, relax respiratory muscles, improve systemic tension, enhance respiratory muscle strength and produce cough reflex, which is beneficial to the recovery of the body. According to the principle of clinical chest physiotherapy, a therapeutic force that periodically changes in a specific direction is generated on the surface of the patient's body. Among them, 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.
本实施例中，咳痰设备为气压咳痰设备，可向患者输出正压、负压治疗压力，用来改变预设方向(水平方向或垂直方向)的治疗力。In this embodiment, 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).
具体地，咳痰设备包括涡轮1，涡轮进气口11可产生负压吸力，将气体吸入涡轮1内；气体在涡轮1内提速或减速至指定的输出功率之后，经涡轮出气口12排出。功率增大，输出的正压力或负压力绝对值增大；功率减小，输出的正压力或负压力绝对值减小。在此过程中，涡轮进气口11、涡轮出气口12的进气流量通过涡轮驱动电路13控制。涡轮驱动电路13可选为印刷电路板，PCB板等。涡轮进气口11、涡轮出气口12分别连通正负压电磁调节阀2，通过控制正负压电磁调节阀2的电流方向，调节咳痰设备进气管路3的气流运行方向、压力的大小。Specifically, 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. When the power increases, the absolute value of the output positive pressure or negative pressure increases; when the power decreases, the absolute value of the output positive pressure or negative pressure decreases. During this process, the intake air flow of the turbine air inlet 11 and the turbine air outlet 12 is 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.
正负压电磁调节阀2包括流量传感器4、压力传感器5。流量传感器4用于实时检测咳痰设备进气管路3的气源压力、流量的大小；压力传感器5用于检测咳痰设备进气管路3的气源压力。将检测的流量、气源压力分别发送至控制系统6的处理器61。处理器61包括算法处理器，存储处理器。算法处理器将流量、气源压力进行逻辑运算，再将计算结果存储于存储处理器，用于样本调取或分析。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.
涡轮驱动电路13、流量传感器4、压力传感器5分别与处理器61通信连接，将采集的咳痰设备进气管路3的气源流量、气源压力、控制正负压电磁调节阀2的电流的相关数据反馈至处理器61，形成一个基于气源流量、气源压力以及电流反馈的闭环系统，精确调节咳痰设备进气管路3的气源流量、气源压力、气体的运行方向等参数，可向患者输出正压、负压治疗压力，用来改变预设方向(水平方向或垂直方向)的治疗力。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).
进一步地，患者吸气时，输出正压治疗压力，垂直方向治疗力产生叩击、震颤可促使呼吸道粘液和代谢物松弛和液化；患者呼气时，水平方向治疗力产生的定向推挤、震颤帮助已液化的粘液按照选择的方向排除体外。相比于现有技术，本方案的咳痰设备不需要设置复杂的管道系统或控制系统，结构简单，降低产品成本。Further, when the patient inhales, the positive pressure treatment pressure is output, and the vertical treatment force produces percussion and tremor, which can promote the relaxation and liquefaction of mucus and metabolites in the respiratory tract; when the patient exhales, the directional push and tremor produced by the horizontal treatment force Helps liquefied mucus out of the body in the direction of choice. Compared with the prior art, 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.
参照图2至图4，本方案中，作为上述技术方案的进一步改进，正负压电磁调节阀2包括具有容置腔的阀体21、沿阀体21的中心轴依次布置的至少两个阀 芯22，以及用于控制阀芯22导通的阀体驱动电路，阀芯22之间设置利于气体流通的第一通道23，第一通道23在阀芯22的运动过程中分别与涡轮进气口11、涡轮出气口12连通。Referring to FIGS. 2 to 4 , in this solution, as a further improvement of the above technical solution, 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.
具体地，阀体21设置容置腔，在容置腔内沿阀体21的中心轴依次布置多个阀芯22，阀芯22之间设置第一通道23。涡轮1在正压模式时，第一通道23与涡轮出气口12连通；涡轮1在负压模式时，第一通道23与涡轮进气口11连通；通过控制阀体21的阀体驱动电路的导通电流的参数，如电流的大小、方向，来改变阀体21内气体的运行方向，流量，进而通过患者的吸气或呼气的状态，调节患者界面处的正压模式或负压模式，以及与工作模式对应的压力方向、大小等参数值或参数范围。根据患者的个体差异，适配或自定义与患者适应的正压模式或负压模式的参数值或参数范围。Specifically, 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 . When the turbine 1 is in the positive pressure mode, the first passage 23 is in communication with the turbine outlet 12; when 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.
本方案中，作为上述技术方案的进一步改进，阀体21还包括设置于阀体21一侧的输出口24、设置于阀体21另一侧的进气口25和出气口26，输出口24与第一通道23连通，进气口25与涡轮进气口11连通，出气口26与涡轮出气口12连通。In this solution, as a further improvement of the above technical solution, 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 .
阀体21的一侧设置输出口24，与输出口24相对应的另一侧设置进气口25和出气口26。优选地，输出口24位于进气口25、出气口26之间，进气口25与涡轮出气口26连通，出气口26与涡轮出气口26连通。One side of the valve body 21 is provided with an output port 24 , and the other side corresponding to the output port 24 is provided with an air inlet port 25 and an air outlet port 26 . Preferably, 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 , and the air outlet 26 communicates with the turbine air outlet 26 .
本实施例中，患者处于吸气状态时，对应涡轮1处于正压工作模式；气体自阀体21的端部进入阀体21的容置腔，经第一个阀芯22流动至进气口25，通过涡轮进气口11进入涡轮1内，进行功率调节，调节至指定的功率时，气体通过涡轮出气口12流动至第一通道23，再经输出口24流向咳痰设备进气管路3，直至流动至患者的呼吸系统。In this embodiment, 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. When the power is adjusted to the specified 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.
患者处于呼气状态时，对应涡轮1处于负压工作模式；涡轮1的负压力将咳痰、咳痰气体自患者的呼吸系统排出，经输出口24流向阀体1的第一通道23，再通过涡轮进气口11进入涡轮1内，进行功率调节，调节至指定的功率时，气体经涡轮出气口12、出气口26，再通过另一个阀体22向阀体的另一端排出。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.
优选地，流量传感器4、压力传感器5分别靠近输出口24设置，提高实时采集、检测咳痰设备进气管路3的气源压力、流量的检测精度。Preferably, 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.
本方案中，作为上述技术方案的进一步改进，阀体驱动电路包括音圈电机7、将音圈电机7安装于阀体21内的音圈电机支架71，音圈电机7与处理器61通信连接。In this solution, as a further improvement of the above technical solution, 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 .
具体地，音圈电机7通过音圈电机支架71安装于阀体1的容置腔内，沿阀体1的中心轴、沿远离阀芯22的方向设置。音圈电机7是一种特殊形式的驱动电机，具有结构简单体积小、高速、高加速响应快等特质。其工作原理是，通电线圈(导体)放在磁场内产生力，力的大小与施加在线圈上的电流成比例，进而改变正负压电磁调节阀2的导通电流的大小和方向。Specifically, 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 .
本方案中，作为上述技术方案的进一步改进，阀芯22与音圈电机7之间还设置用于缓冲的弹簧片8。In this solution, as a further improvement of the above technical solution, a spring sheet 8 for buffering is also provided between the valve core 22 and the voice coil motor 7 .
当阀芯22朝向音圈电机7运动时，弹簧片8可避免阀芯22损伤音圈电机7。When the valve core 22 moves toward the voice coil motor 7 , the spring piece 8 can prevent the valve core 22 from damaging the voice coil motor 7 .
本方案中，作为上述技术方案的进一步改进，咳痰设备还包括靠近咳痰设备进气管路3设置的痰液回收瓶9、患者界面10。In this solution, as a further improvement of the above-mentioned technical solution, 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.
痰液回收瓶9靠近患者的口腔设置，咳痰设备将患者呼吸系统的咳液排出至痰液回收瓶9，患者界面10用于显示吸呼状态、正负压工作模式、压力方向、大小等参数值或参数范围。或根据患者的个体差异，自定义调节上述参数值或参数范围。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.
参照图5，本发明还提供一种基于正负压电磁调节阀的咳痰设备控制方法，包括：5, the present invention also provides a control method for expectoration equipment based on positive and negative pressure electromagnetic regulating valve, including:
S01，处理器61初始化；设定涡轮1的正压工作模式、负压工作模式；涡轮1调节至指定的标准压力值P；S01, 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;
控制系统初始化，处理器61初始化；设定涡轮1正压工作模式、负压工作模式启动的条件。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.
本实施例中，患者吸气时，涡轮1处于正压工作模式；患者呼气时，涡轮1处于负压工作模式。在吸气时，患者肺内的气体容量、压力逐渐增大；在吸气时，患者肺内的气体容量、压力逐渐减小；在吸气和呼气的周期内，肺内的气体容量、压力形成抛物线，通过抛物线的斜率判断吸气或呼气的状态。当斜率K<0时，判断为吸气状态；当斜率K>0时，判断为呼气状态。将斜率作为正压力工作模式、负压工作模式启动的判断条件。In this embodiment, 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. During inhalation, 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. When 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.
涡轮1通过调节转速调节对应的压力值。处理器61初始化时，将涡轮1调节至指定的转速，进而输出标准压力值P。The turbine 1 adjusts the corresponding pressure value by adjusting the rotational speed. 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.
S02，压力传感器5实时采集咳痰设备进气管路3的压力值P(t)，将采集的压力值P(t)发送至处理器61；流量传感器4采集咳痰设备管路的流量值I(t)，将采集的流量值I(t)发送至处理器61，将检测的压力值P(t)与标准压力值P进行比对；S02, 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;
若P(t)>P，处理器61发送控制信号至正负压电磁调节阀2，控制正负压电磁调节阀2的阀门减小，直至P(t)＝P；If P(t)>P, the processor 61 sends a control signal to the positive and negative pressure electromagnetic regulating valve 2, and controls the valve of the positive and negative pressure electromagnetic regulating valve 2 to decrease until P(t)=P;
若P(t)<P，处理器61发送控制信号至正负压电磁调节阀2，控制正负压电磁调节阀2的阀门增大，直至P(t)＝P；If P(t)<P, the processor 61 sends a control signal to the positive and negative pressure electromagnetic regulating valve 2, and controls the valve of the positive and negative pressure electromagnetic regulating valve 2 to increase until P(t)=P;
若P(t)＝P，则维持当前状态。If P(t)=P, the current state is maintained.
压力传感器5实时采集靠近输出口24的进气管路3的压力值P(t)，流量值I(t)，将采集的P(t)、I(t)发送至处理器61，将检测的压力值P(t)与标准压力值P进行比对；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;
若P(t)>P，正负压电磁调节阀2的阀门减小，减少进气管路3内气体的流量，从而减少气体的压力，直至P(t)＝P；If P(t)>P, the valve of the positive and negative pressure electromagnetic regulating valve 2 is reduced, reducing the flow of gas in the intake pipe 3, thereby reducing the pressure of the gas until P(t)=P;
若P(t)<P，正负压电磁调节阀2的阀门增大，增大进气管路3内气体的流量，从而增加气体的压力，直至P(t)＝P；If P(t)<P, the valve of the positive and negative pressure electromagnetic regulating valve 2 is increased, and the flow rate of the gas in the intake pipe 3 is increased, thereby increasing the pressure of the gas until P(t)=P;
若P(t)＝P，则维持当前状态。If P(t)=P, the current state is maintained.
本发明的基于正负压电磁调节阀的咳痰设备的控制方法，患者处于吸气状态时，设置正压工作模式；患者处于呼气状态时，设置负压工作模式；在一个呼吸周期内，正压模式将气源通过进气管路3导入患者呼吸系统，负压模式将患者体内的痰液通过进气管路3排出体外；在此过程中，根据压力传感器5检测的压力值P(t)与标准压力值P进行比对；通过设定的判断条件控制正负压电磁调节阀2的导通、阀门增大或阀门减少的工况，进而控制进气管路3内气体的压力和流量大小；通过流量传感器4采集的流量值判断进气管路的气体流动方向，进而控制进气管路3内气体的流动方向。In the control method of the expectoration equipment based on the positive and negative pressure electromagnetic regulating valve of the present invention, 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.
上述步骤S02中，处理器61发送控制信号至正负压电磁调节阀2包括：In the above step S02, the control signal sent by the processor 61 to the positive and negative pressure electromagnetic regulating valve 2 includes:
处理器61发送数字信息或模拟信息至正负压电磁调节阀2，从而调节正负 压电磁调节阀2的阀门的增大或减小。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.
本实施例中，数字信号可选为0～5mA的电流，设定对比的标准电流值或电流范围，将实时采集的电流与标准电流值或电流范围进行比对，满足一个设定的条件时，作为判断阀门增大的启动条件；满足另一个设定的条件时，作为判断阀门减小的启动条件。当然，数字信号可选为0～10V的电压。In this embodiment, 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. Of course, the digital signal can be selected as a voltage of 0-10V.
模拟信号可选为频率信号、温度信号等。当选定为频率信号时，通过输出直方图，或高低电平，作为判断阀门增大或减小的启动条件。The analog signal can be selected as frequency signal, temperature signal, etc. When selected as the frequency signal, the output histogram, or the high and low levels, is used as the starting condition for judging the increase or decrease of the valve.
本方案中，作为上述技术方案的进一步改进，步骤S02还包括：In this scheme, as a further improvement of the above technical scheme, step S02 also includes:
处理器61通过实时采集的流量值I(t)，判断咳痰设备进气管路3气体的流动方向；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;
根据咳痰设备进气管路3气体的流动方向，判断用户吸气或呼气的状态；According to the flow direction of the gas in the air inlet pipeline 3 of the expectoration equipment, determine the state of the user's inhalation or exhalation;
若用户为吸气状态时，处理器61控制涡轮1采用正压工作模式；If the user is in the inhalation state, the processor 61 controls the turbine 1 to adopt the positive pressure working mode;
若用户为呼气状态时，处理器61控制涡轮1采用负压工作模式。If the user is in the exhalation state, the processor 61 controls the turbine 1 to use the negative pressure working mode.
具体地，处理器61通过实时采集的流量值I(t)，判断用户吸气或呼气的状态。在本实施例中，通过采集气体的流动方向判断用户的吸气或呼气的状态。Specifically, the processor 61 judges the state of the user's inhalation or exhalation through the flow value I(t) collected in real time. In this embodiment, the user's inhalation or exhalation state is determined by collecting the flow direction of the gas.
可选地，在进气管路3中设置方向传感器，通过方向传感器感应气体的流动方向，将采集的数据发送至处理器61，判断当前用户的吸气或呼气状态。Optionally, 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.
当然，可按上述技术方案中，通过呼吸过程产生的曲线图，以及曲线图的斜率判断吸气或呼气的状态。Of course, according to the above technical solution, the state of inhalation or exhalation can be judged by the graph generated by the breathing process and the slope of the graph.
本实施例中，咳痰设备设置为可穿戴的咳痰背心，进气管路3与咳痰背心连通。在咳痰设备正常工作时充气、放气过程中，咳痰背心的背部针对于咳痰部位，对辅助治疗咳嗽症状有帮助，提高咳痰设备咳痰、排痰的效果。In this embodiment, the expectoration equipment is set as a wearable expectoration vest, and the air intake pipeline 3 is communicated with the expectoration vest. During the process of inflating and deflating the expectoration equipment during normal operation, 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.
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明，不能认定本发明的具体实施只限于这些说明。对于本发明所属领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本发明的保护范围。The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be considered that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the art to which the present invention belongs, without departing from the concept of the present invention, some simple deductions or substitutions can be made, which should be regarded as belonging to the protection scope of the present invention.

Claims (10)

  1. 一种基于正负压电磁调节阀的咳痰设备，其特征在于，包括：A kind of expectoration equipment based on positive and negative pressure electromagnetic regulating valve, is characterized in that, comprises:
    涡轮，用于为咳痰设备提供气源，所述涡轮包括涡轮进气口、涡轮出气口，所述涡轮进气口、涡轮出气口的进气流量通过涡轮驱动电路控制；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;
    正负压电磁调节阀，与所述涡轮进气口、涡轮出气口连通，用于实时检测、调节咳痰设备进气管路的气源压力、流量；所述正负压电磁调节阀包括用于检测咳痰设备进气管路气体流量的流量传感器、用于检测咳痰设备进气管路气源压力的压力传感器；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;
    控制系统，包括处理器，所述涡轮驱动电路、流量传感器、压力传感器分别将咳痰设备进气管路的气源流量、控制正负压电磁调节阀的电流反馈给处理器，形成一个基于气源流量、气源压力以及电流反馈的闭环控制系统，进而对咳痰设备进气管路的压力和流量进行控制。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.
  2. 根据权利要求1所述的咳痰设备，其特征在于，所述正负压电磁调节阀包括具有容置腔的阀体、沿所述阀体的中心轴依次布置的至少两个阀芯，以及用于控制阀芯导通的阀体驱动电路，所述阀芯之间设置利于气体流通的第一通道，所述第一通道在阀芯的运动过程中分别与所述涡轮进气口、涡轮出气口连通。The expectoration device according to claim 1, wherein the positive and negative pressure electromagnetic regulating valve comprises 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 core, a first channel that is conducive to gas circulation is arranged between the valve cores, and the first channel is respectively connected with the turbine air inlet, the turbine air inlet and the turbine during the movement of the valve core. The air outlet is connected.
  3. 根据权利要求2所述的咳痰设备，其特征在于，所述阀体还包括设置于所述阀体一侧的输出口、设置于所述阀体另一侧的进气口和出气口，所述输出口与所述第一通道连通，所述进气口与所述涡轮进气口连通，出气口与所述涡轮出气口连通。The expectoration device according to claim 2, wherein the valve body further comprises 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, The output port communicates with the first passage, the air inlet communicates with the turbine air inlet, and the air outlet communicates with the turbine air outlet.
  4. 根据权利要求2所述的咳痰设备，其特征在于，所述阀体驱动电路包括音圈电机、将所述音圈电机安装于所述阀体内的音圈电机支架，所述音圈电机与所述处理器通信连接。The expectoration device according to claim 2, wherein the valve body driving circuit comprises 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 to the The processor is communicatively connected.
  5. 根据权利要求4所述的咳痰设备，其特征在于，所述阀芯与所述音圈电机之间还设置用于缓冲的弹簧片。The expectoration device according to claim 4, wherein a spring sheet for buffering is further provided between the valve core and the voice coil motor.
  6. 根据权利要求2所述的咳痰设备，其特征在于，所述流量传感器、压力传感器分别靠近所述输出口设置。The expectoration device according to claim 2, wherein the flow sensor and the pressure sensor are respectively arranged close to the output port.
  7. 根据权利要求1至6中任一项所述的咳痰设备，其特征在于，还包括靠近所述咳痰设备进气管路设置的痰液回收瓶、患者界面。The expectoration device according to any one of claims 1 to 6, characterized in that, further comprising a sputum recovery bottle and a patient interface arranged near the air inlet pipeline of the expectoration device.
  8. 一种基于正负压电磁调节阀的咳痰设备控制方法，其特征在于，包括：A control method for expectoration equipment based on positive and negative pressure electromagnetic regulating valve, characterized in that, comprising:
    S01，处理器初始化；设定涡轮的正压工作模式、负压工作模式；涡轮调节至指定的标准压力值P；S01, 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;
    S02，压力传感器实时采集咳痰设备进气管路的压力值P(t)，将采集的压力值P(t)发送至处理器；流量传感器采集咳痰设备管路的流量值I(t)，将采集的流量值I(t)发送至处理器，将检测的压力值P(t)与标准压力值P进行比对；S02, the pressure sensor collects the pressure value P(t) of the air intake pipeline of the expectoration equipment 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, Send the collected flow value I(t) to the processor, and compare the detected pressure value P(t) with the standard pressure value P;
    若P(t)>P，处理器发送控制信号至正负压电磁调节阀，控制正负压电磁调节阀的阀门减小，直至P(t)＝P；If P(t)>P, the processor sends a control signal to the positive and negative pressure electromagnetic regulating valve, and controls the valve of the positive and negative pressure electromagnetic regulating valve to decrease until P(t)=P;
    若P(t)<P，处理器发送控制信号至正负压电磁调节阀，控制正负压电磁调节阀的阀门增大，直至P(t)＝P；If P(t)<P, the processor sends a control signal to the positive and negative pressure electromagnetic regulating valve, and the valve that controls the positive and negative pressure electromagnetic regulating valve increases until P(t)=P;
    若P(t)＝P，则维持当前状态。If P(t)=P, the current state is maintained.
  9. 根据权利要求8所述的控制方法，其特征在于，步骤S02还包括：The control method according to claim 8, wherein step S02 further comprises:
    处理器通过实时采集的流量值I(t)，判断咳痰设备进气管路气体的流动方向；The processor judges the flow direction of the gas in the intake line of the expectoration equipment through the flow value I(t) collected in real time;
    根据咳痰设备进气管路气体的流动方向，判断用户吸气或呼气的状态；According to the flow direction of the gas in the intake pipe of the expectoration equipment, judge the state of the user's inhalation or exhalation;
    若用户为吸气状态时，处理器控制涡轮采用正压工作模式；If the user is in the inhalation state, the processor controls the turbine to use the positive pressure working mode;
    若用户为呼气状态时，处理器控制涡轮采用负压工作模式。If the user is in an exhalation state, the processor controls the turbine to use a negative pressure working mode.
  10. 根据权利要求8所述的控制方法，其特征在于，步骤S02中，处理器发送控制信号至正负压电磁调节阀包括：The control method according to claim 8, wherein in step S02, the processor sending the control signal to the positive and negative pressure electromagnetic regulating valve comprises:
    处理器发送数字信号或模拟信号至正负压电磁调节阀。The processor sends a digital signal or an analog signal to the positive and negative pressure solenoid regulating valve.
PCT/CN2020/119259 2020-09-15 2020-09-30 Cough assist device based on electromagnetic positive/negative pressure regulating valve and control method WO2022056965A1 (en)

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