Electronic control breathing machine for hyperbaric oxygen chamber

Abstract

The utility model discloses a hyperbaric oxygen chamber electric control respirator, which relates to the respirator field, and comprises a control module, a jet pump and a pipeline, an outlet of the jet pump delivers air to a patient through the pipeline, a bypass pipe is installed on the pipeline at the outlet of the jet pump, and the bypass pipe is used for inputting oxygen; a two-position three-way valve, a throttling valve and an electromagnetic valve are sequentially installed on the bypass pipe, the two-position three-way valve is communicated with the jet pump, the electromagnetic valve is located at an air inlet of the bypass pipe, the throttling valve is located between the electromagnetic valve and the two-position three-way valve and used for adjusting airflow, and when the jet pump works, the bypass pipe can bring in air under the Venturi effect; parameter fluctuation caused by pressure change in the pressure increasing and decreasing process of the oxygen cabin is reduced. According to the pneumatic electric control type breathing machine, the jet pump and the bypass pipe are arranged, high-pressure oxygen is brought into a part of air through the Venturi effect of the jet pump to achieve ventilation with the oxygen concentration being 40%, and therefore the flow speed of the oxygen and bypass oxygen are controlled to achieve change of the oxygen concentration.

Description

Technical Field

[0001] The utility model relates to the field of ventilators, in particular to an electronically controlled ventilator in a hyperbaric oxygen chamber. Background Art

[0002] An oxygen chamber ventilator is a device for high-pressure oxygen therapy, mainly used for the treatment of anaerobic infection, carbon monoxide poisoning, gas embolism and other symptoms. It is usually composed of a cabin, an exhaust (oxygen) system, an air conditioning system and a control system. When the oxygen chamber is working, the internal pressure must not be greater than 0.3MPa. Most of the existing oxygen chamber ventilators are pneumatic air-controlled ventilators, and the main unit is composed of pneumatic components such as a beat generator, a one-way valve, and a throttle valve. The beat generator sends out a periodic air control signal to control the opening and closing of the switch valve according to a certain frequency and duty cycle, and outputs a certain frequency and tidal volume. However, when the pneumatic air-controlled ventilator changes the internal pressure, including the pressure changes during the boost and depressurization process, the cabin parameters will fluctuate, resulting in unstable parameters. Utility Model Content

[0003] The purpose of the utility model is to provide a hyperbaric oxygen chamber electronically controlled ventilator to solve the problems raised in the above-mentioned background technology.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a high-pressure oxygen chamber electronically controlled ventilator, comprising a control module, a jet pump and a pipeline, the outlet of the jet pump delivers air to the patient through the pipeline, and a bypass pipe is also installed on the pipeline at the outlet of the jet pump, and the bypass pipe is used to input oxygen;

[0005] A two-position three-way valve, a throttle valve and a solenoid valve are sequentially installed on the bypass pipe. The two-position three-way valve is connected to the jet pump. The solenoid valve is located at the air inlet of the bypass pipe. The throttle valve is located between the solenoid valve and the two-position three-way valve and is used to adjust the airflow. When the jet pump is working, the bypass pipe will bring in air under the Venturi effect to reduce parameter fluctuations caused by pressure changes during the pressurization and depressurization process of the oxygen cabin.

[0006] Preferably, it also includes an alarm module, on which a speaker is installed to realize alarms of the upper and lower pressure limits of the oxygen chamber, low battery and power failure.

[0007] Preferably, it also includes a power management unit and a button.

[0008] Preferably, it also includes a flow sensor and a pressure sampling port installed on the pipeline.

[0009] Preferably, a safety relief valve is also installed at the connection between the bypass pipe and the pipeline.

[0010] Preferably, the control module is a chip of model STC9058AD, which is used to collect key information and process signals collected by a flow sensor, an oxygen sensor, and a pressure sensor.

[0011] Preferably, the alarm module uses a chip model STC12C5410AD.

[0012] Preferably, a pressure sensor is placed in the pressure sampling port.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model is a pneumatic electrically controlled ventilator. By arranging a jet pump and a bypass pipe, high-pressure oxygen brings in a portion of air through the Venturi effect of the jet pump to achieve ventilation with an oxygen concentration of 40%, thereby controlling the flow rate of oxygen and bypassing oxygen to achieve changes in oxygen concentration, and at the same time avoiding parameter fluctuations caused by pressure changes during the process of pressurizing and depressurizing the oxygen chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the principle structure diagram of the utility model;

[0016] Figure 2 This is the wiring diagram of the chip STC9058AD of the utility model;

[0017] Figure 3 For this utility model Figure 2 A magnified diagram of the circuit in part A;

[0018] Figure 4 For this utility model Figure 2 The enlarged diagram of the circuit of part B in the middle;

[0019] Figure 5 For this utility model Figure 2 The enlarged diagram of the circuit of part C in the middle;

[0020] Figure 6 This is the circuit diagram of the chip STC12C5410AD of the utility model;

[0021] Figure 7 For this utility model Figure 6 The enlarged diagram of the circuit of part D in the middle;

[0022] Figure 8 For this utility model Figure 2 The enlarged diagram of the circuit of part E in the middle;

[0023] Fig. 9 This is the circuit diagram of the voice alarm chip SYN6288 of the utility model;

[0024] Fig.10This is the circuit diagram of the voltage stabilizing chip L78M05 of the utility model. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] As shown in , this embodiment provides a high-pressure oxygen chamber electronically controlled ventilator, including a power management unit, a button, a display screen, an alarm module, a solenoid valve control module and a sensor data acquisition module. The power management unit uses the chip L78M05 to stabilize the voltage to 5V to power each chip, LCD screen, sensor, and solenoid valve. The power adapter is placed outside the oxygen chamber, and the 8.4V DC power is connected to the inside of the oxygen chamber through a special explosion-proof connector. The internal voltage stabilizing circuit 5V of the ventilator can provide the control board, LCD screen, solenoid valve, and sensor. The alarm module uses the chip STC12C5410AD. The chip STC12C5410AD is responsible for processing the alarm information and sending each alarm to the voice alarm chip SYN6288 to realize the processing of the alarm information. The chip STC9058AD is responsible for collecting button information, processing the signals collected by the flow sensor, oxygen sensor, and pressure sensor, and controlling the solenoid valve, completing the display of various information and sending the alarm information to the chip STC12C5410AD. The communication method between the above chips adopts the serial port mode.

[0027] like Figure 1 As shown, it also includes a jet pump and a pipeline. The pipeline is installed at the outlet of the jet pump. The jet pump is directly connected to the external air to provide air to the pipeline. A bypass pipe is also installed on the pipeline at the outlet of the jet pump. The bypass pipe and the oxygen bypass pipeline are successively installed with a two-position three-way valve, a throttle valve and a solenoid valve. The two-position three-way valve is connected to the jet pump. The solenoid valve is located at the air inlet of the bypass pipe. The throttle valve is located between the solenoid valve and the two-position three-way valve. The throttle valve is used to control the tidal volume. When the high-pressure oxygen enters the pipeline from the nozzle outlet of the jet pump under the drive of the jet pump, a part of the air will be brought in from the bypass pipe under the Venturi effect. This can avoid parameter fluctuations caused by pressure changes during the pressurization and depressurization process of the oxygen cabin. High-pressure oxygen brings in a part of the air through the Venturi effect of the jet pump to achieve ventilation with an oxygen concentration of 40%. Controlling the flow rate of oxygen and bypassing oxygen can achieve changes in oxygen concentration.

[0028] A safety relief valve (also called a safety overflow valve) is installed at the connection between the bypass pipe and the pipeline. As an automatic pressure relief device, it can ensure the stability of the pipeline pressure. A flow sensor and a breathing valve are also installed on the pipeline. The breathing valve is located at the patient's position, and the flow sensor is located between the safety relief valve and the breathing valve. The flow sensor and the pressure sampling port are connected to the chip STC9058AD. A pressure sensor is placed at the pressure sampling port to detect the pressure of the pipeline.

[0029] The chip STC12C5410AD has a reset function, which is used to silence the alarm. Figure 6-Figure 8 As shown, pin 3 of the chip STC12C5410AD is connected to a 5V power supply and grounded. Pins 4 and 5 are grounded through a single row of four columns of pins. Pins 6 and 7 are grounded through a capacitor. Pins 8 to 11 are connected to a 5V power supply. Pins 9 to 11 are grounded through three transistors. Pins 9 to 11 are connected to the collectors of the three transistors, the emitters of the transistors are grounded, and the bases of the transistors are connected to the power supply, as shown in FIG. Figure 7 As shown, pin 14 is grounded. Pin 28 of the chip STC12C5410AD is connected to a 5V power supply and grounded through a capacitor C4.

[0030] Pin 15 of the chip STC12C5410AD is connected to a 5V power supply and is grounded through a MOS transistor Q8. Pin 15 is connected to the gate of the MOS transistor Q8, the source of the MOS transistor Q8 is grounded, and the drain of the MOS transistor Q8 is connected to the battery chip through a diode. The drain of the MOS transistor Q8 is connected to the cathode of the diode, and the positive electrode of the earphone tube is connected to pin 1 of the battery chip. Pins 2 and 3 of the battery chip are grounded. The cathode of the diode is also connected to a MOS tube Q7, the cathode of the diode is connected to the source of the MOS tube Q7, the gate of the MOS tube Q7 is connected to the drain of the MOS transistor Q8, and the drain of the MOS tube Q7 is connected to the Vin pin of the chip L78M05 and is grounded; the Vin pin of the chip L78M05 is connected to a 5VA power supply through a capacitor. The gate of the chip L78M05 is also connected to the cathode of the diode. The GND pin of the chip L78M05 is grounded. Pin 18 of the chip STC12C5410AD is connected to the Vin pin of the chip L78M05. The Vout pin of the chip L78M05 is grounded and connected to the 5V power supply through the diode VD3. The Vout pin is connected to the positive electrode of the diode VD3, and the negative electrode of the diode VD3 is connected to the 5V power supply. Pin 19 of the chip STC12C5410AD is connected to the positive electrode of the diode VD3, and the negative electrode of the diode VD2 is connected to the 5V power supply.

[0031] like Figure 2 and Figure 3As shown, pin 1 and pin 44 of chip STC9058AD are respectively connected to pin 1 and pin 3 of single-row 3-column pin P4, pin 2 of single-row 3-column pin P4 is connected to pin 3 of single-row 4-column pin P6, and pin 1 and pin 2 of single-row 4-column pin P6 are grounded. Pin 5 and pin 7 of chip STC9058AD are grounded through single-row 4-column pin P1. Pin 9, pin 12 and pin 13 of chip STC9058AD are respectively connected to pin 9 to pin 11 of chip STC12C5410AD through the bases of three transistors.

[0032] Pin 10Y of chip STC9058AD is connected to OUT pin 1 of chip LM399. GND pin of chip LM399 is grounded, and pins 3 to 5 of chip LM399 are connected to power and grounded. Pins 14 and 15 of chip STC9058AD are grounded, pin 4 is grounded, and pin 4 is connected to power supply VCC, which is grounded through capacitor C10 and diode. Capacitor C10 is connected to the cathode of the diode, and the anode of the diode is grounded. Pins 30 to 37 of chip STC9058AD are all connected to power supply VCC, and these pins are connected to pins 17 to 10 of LCD chip (display chip) in sequence. Pins 1 and 2, pins 7 and 18 of LCD chip are grounded. Pins 19 and 4 of LCD chip are grounded through resistors. Pin 5 of LCD chip is connected to pin 41 of chip STC9058AD, and pin 6 of LCD chip is connected to pin 40 of chip STC9058AD.

[0033] Pin 29 of chip STC9058AD is connected to pin 9 of LCD chip. Pin 27 of chip STC9058AD is grounded through transistor Q4. Pin 27 is connected to the base of transistor Q4, the emitter of the transistor is grounded, the collector is connected to pin 21 of LCD chip, and the power supply VCC is connected.

[0034] Pin 27, Pin 28 and Pin 42 of the chip STC9058AD are respectively connected to Pin 3, Pin 4 and Pin 2 of the single-row 4-column pin P7, and Pin 1 of the single-row 4-column pin P7 is connected to the power supply VCC. Pin 8 of the chip STC9058AD is connected to the XIQI chip through transistor Q2 and transistor Q1. Pin 8 of the chip STC9058AD is connected to the base of transistor Q2, and the emitter of transistor Q2 and the emitter of transistor Q1 are grounded. The collector of transistor Q2 is connected to the base of transistor Q1, and the collector of transistor Q1 is connected to Pin 1 and Pin 2 of the XIQI chip. Pin 3 and Pin 4 of the XIQI chip are connected to the power supply. And the collector of transistor Q1 is grounded through diode Q1, transistor Q1 is connected to the positive pole of diode Q1, and the negative pole of diode Q1 is connected to the power supply VCC. The base of transistor Q2 and transistor Q1 are connected to the power supply VCC through a resistor.

[0035] Pins 18 to 25 of the chip STC9058AD are connected to pins 8 to 1 of the single-row 8-column pin P10 in sequence. Pins 1 to 4 of the single-row 8-column pin P10 are connected to the power supply VCC through resistors.

[0036] like Figure 2-5 and Fig.10 As shown, the pin 2 of the chip STC9058AD is connected to the voltage regulator chip LM1085. The voltage regulator chip 1085 is a commonly used voltage conversion chip and will not be described in detail here.

[0037] like Figure 6-Figure 9 As shown, pin eight, pin seven, pin seventeen, pin eighteen, and pin twenty-three of the voice alarm chip SYN6288 are grounded. Pin two, pin ten, pin six, pin twenty, and pin twenty-six of the voice alarm chip SYN6288 are connected to a 5V power supply and grounded through a capacitor. Pin one, pin three, and pin sixteen of the voice alarm chip SYN6288 are grounded. Pin eight and pin nine of the chip SYN6288 are connected to the single-row 2-column pin P16, and pin four of the chip SYN6288 is grounded through a diode D6. Pin nineteen of the chip SYN6288 is grounded. Pin twenty-eight of the chip SYN6288 is grounded through a transistor. Pin twenty-eight is connected to the collector of the transistor and to a 5V power supply, the emitter of the transistor is grounded, and the base of the transistor is connected to pin four of the single-row 4-column pin P12. Pin twenty-four and pin twenty-five of the chip SYN6288 are grounded through capacitors, respectively. Pin 27 of the chip SYN6288 is connected to pin 1 of the single-row 4-column pin P12. Pins 2 and 3 of the single-row 4-column pin P12 are connected to pins 4 and 5 of the chip STC9058AD respectively.

[0038] The ventilator is connected to the oxygen chamber through a special connector. The high-pressure oxygen inside the oxygen chamber is used to control the working frequency of the solenoid valve to control the breathing frequency. The throttle valve controls the tidal volume. The high-pressure oxygen brings in a portion of the air through the Venturi effect of the jet pump to achieve ventilation with an oxygen concentration of 40%. Controlling the flow rate of oxygen and bypassing oxygen can achieve changes in oxygen concentration. The ventilator can also automatically adjust the intake through a sensor. The patient's exhaled gas is discharged to the outside of the oxygen chamber by a special recovery pipeline. This will not affect the oxygen concentration inside the oxygen chamber. The ventilator can monitor the atmospheric concentration and pressure in the chamber to automatically adjust the tidal volume and pressure. The ventilator can monitor the patient's blood oxygen saturation and the carbon dioxide concentration of the exhaled gas. And adjust the corresponding parameters and provide alarms. At the same time, it also solves the problem that the parameter setting of the pneumatic air-controlled ventilator is inaccurate, the error is large, the consistency is poor, and the ventilation process monitoring and alarm functions are lacking, and the operability is poor. The present application is applicable to a high-pressure oxygen chamber with air as the pressurized medium, the pressure is 0.3Mpa, and the oxygen concentration is 23%. The oxygen chamber is designed as a pneumatic and electrically controlled ventilator, with an oxygen sensor, a flow sensor, and a pressure sensor. Precise parameter control, easy operation and rich functions.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Hyperbaric oxygen chamber electronically controlled ventilator, characterized in that: It includes a control module, a jet pump and a pipeline. The outlet of the jet pump delivers air to the patient through the pipeline. A bypass pipe is also installed on the pipeline at the outlet of the jet pump, and the bypass pipe is used to input oxygen. A two-position three-way valve, a throttle valve and a solenoid valve are sequentially installed on the bypass pipe. The two-position three-way valve is connected to the jet pump. The solenoid valve is located at the air inlet of the bypass pipe. The throttle valve is located between the solenoid valve and the two-position three-way valve and is used to adjust the airflow. When the jet pump is working, the bypass pipe will bring in air under the Venturi effect to reduce parameter fluctuations caused by pressure changes during the pressurization and depressurization process of the oxygen cabin.

2. The hyperbaric oxygen chamber electronically controlled ventilator according to claim 1, characterized in that: It also includes an alarm module, on which a speaker is installed to realize alarms for the upper and lower pressure limits of the oxygen chamber, low battery, and power outages.

3. The hyperbaric oxygen chamber electronically controlled ventilator according to claim 2, characterized in that: It also includes a power management unit and buttons.

4. The hyperbaric oxygen chamber electronically controlled ventilator according to claim 1 or 2, characterized in that: It also includes a flow sensor and a pressure sampling port installed on the pipeline.

5. The hyperbaric oxygen chamber electronically controlled ventilator according to claim 4, characterized in that: A safety relief valve is also installed at the connection between the bypass pipe and the pipeline.

6. The hyperbaric oxygen chamber electronically controlled ventilator according to claim 5, characterized in that: The control module is a chip of model STC9058AD, which is used to collect key information and process signals collected by flow sensors, oxygen sensors, and pressure sensors.

7. The hyperbaric oxygen chamber electronically controlled ventilator according to claim 2, characterized in that: The alarm module uses a chip model STC12C5410AD.

8. The hyperbaric oxygen chamber electronically controlled ventilator according to claim 4, characterized in that: A pressure sensor is placed in the pressure sampling port.

Images