Air supply system of extracorporeal shock wave therapeutic apparatus

Abstract

The utility model relates to an air supply system of an extracorporeal shock wave therapeutic apparatus, which comprises a first one-way valve arranged between an air pump and an air storage tank, an inlet of the first one-way valve is connected with the air pump, an outlet of the first one-way valve is connected with the air storage tank, and a second one-way valve is arranged between a high-frequency electromagnetic valve and an electromagnetic proportional valve. An inlet of the second one-way valve is connected with the electromagnetic proportional valve, and an outlet is connected with the high-frequency electromagnetic valve; the air storage tank is connected with an air pressure transmitter, and the output end of the air pressure transmitter is connected with a control module; the air pump comprises a motor, and the motor is electrically connected with the control module; the control module is further electrically connected with the electromagnetic proportional valve. The control module is further electrically connected with the high-frequency electromagnetic valve. The control module is arranged to control the air pump to work, the first one-way valve is arranged to ensure the normal work of the air pump, the second one-way valve is arranged to ensure the stable work of the system, the air pressure transmitter and the air pressure detection of the electric proportional valve are combined to control the air pump and the high-frequency electromagnetic valve to work, and the stable work of the system is further ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an air supply system for an extracorporeal shock wave therapy instrument. Background Art

[0002] Extracorporeal shock wave therapy devices are used for the treatment and rehabilitation of bone tissue diseases and chronic soft tissue injury diseases. Among them, the pneumatic ballistic extracorporeal shock wave therapy device uses an air supply system to provide the power of the shock wave. The shock wave uses the high-speed movement of the vibrator in the cavity to generate vibration, which is coupled into the human body through a gun-type probe. The mechanical waves generated by this type of device do not have focusing characteristics, and are also called scattered shock wave therapy equipment.

[0003] The existing gas supply systems are all integrated systems, but there are the following problems when they are used. First, the back pressure affects the start-up of the air pump. Second, the reverse impact pressure of the extracorporeal shock wave therapy device will impact the safety valve, causing unstable operation. For example, CN215193609U, an extracorporeal shock wave therapy device gas supply system, applied by our unit, solves the impact problem by setting a manual pressure reducing valve. However, it is found in use that the manual pressure reducing valve will produce a deflation sound after opening, which affects the use effect.

[0004] Therefore, there is an urgent need for an air supply system with a simple structure and which can effectively solve the back pressure problem. Summary of the invention

[0005] In order to solve the problem that the unstable internal air pressure of the existing air supply system affects the use effect, the utility model proposes an extracorporeal shock wave therapy instrument air supply system, a control module is set to control the operation of the air pump, a first one-way valve is set to ensure the normal operation of the air pump, a second one-way valve is set to ensure the stable operation of the system, and the air pressure detection of the air pressure transmitter and the electric proportional valve is combined to control the operation of the air pump and the high-frequency solenoid valve, thereby further ensuring the stable operation of the system.

[0006] In order to achieve the above-mentioned purpose, the utility model provides an extracorporeal shock wave therapy instrument air supply system, comprising an air pump, an air storage tank, an oil mist separator, an electromagnetic proportional valve and a high-frequency electromagnetic valve connected in sequence, a first one-way valve is arranged between the air pump and the air storage tank, an inlet of the first one-way valve is connected to the air pump, and an outlet is connected to the air storage tank, a second one-way valve is arranged between the high-frequency electromagnetic valve and the electromagnetic proportional valve, an inlet of the second one-way valve is connected to the electromagnetic proportional valve, and an outlet is connected to the high-frequency electromagnetic valve;

[0007] The gas storage tank is connected to an air pressure transmitter, and the output end of the air pressure transmitter is connected to a control module;

[0008] The air pump includes a motor, and the motor is electrically connected to the control module;

[0009] The control module is also electrically connected to the electromagnetic proportional valve;

[0010] The control module is also electrically connected to the high-frequency solenoid valve.

[0011] The gas in the gas tank cannot flow to the air pump under the action of the first one-way valve, ensuring that the air pump can work under pressure. The gas at the high-frequency solenoid valve cannot flow back to the solenoid proportional valve under the action of the second one-way valve, ensuring the stability of the system.

[0012] Furthermore, a first safety valve is connected between the gas storage tank and the oil mist separator, and a second safety valve is arranged between the inlet of the second one-way valve and the electromagnetic proportional valve.

[0013] Safety valves are set to ensure system safety. When the pressure in the gas tank is too high, the first safety valve opens to release the pressure. When the pressure in the solenoid proportional valve is too high, the second safety valve opens to release the pressure.

[0014] Furthermore, the control module includes an MCU chip, the MCU chip is electrically connected to an AD data acquisition module and a DA data output module, and the MCU chip is connected to the air pressure transmitter and the feedback end of the electromagnetic proportional valve through the AD data acquisition module;

[0015] The MCU chip is connected to the control end of the electromagnetic proportional valve through the DA data output module.

[0016] The use of digital circuits facilitates data collection from air pressure transmitters and electromagnetic proportional valves, and facilitates control of air pumps and electromagnetic proportional valves.

[0017] Furthermore, the output end of the MCU chip is connected to a MOS drive circuit, the output end of the MOS drive circuit is connected to an intermediate relay, the coil of the intermediate relay is connected to the output end of the MOS drive circuit, and the normally open contact of the intermediate relay is connected to the motor.

[0018] The MCU chip controls the intermediate relay through the MOS drive circuit to control the air pump, and the air pump is connected to a 220V power supply.

[0019] Furthermore, the MCU chip is connected to a communication unit, and the MCU chip is connected to the control end of the high-frequency solenoid valve through the communication unit wires.

[0020] Furthermore, the MCU chip is electrically connected to a touch screen via a communication unit.

[0021] Through the above technical solution, the beneficial effects of the utility model are:

[0022] The utility model eliminates the influence of air pressure on system stability. The first one-way valve is set to ensure that the air pump can start normally when the system is pressurized. The second one-way valve is set to ensure that the reverse impact pressure generated by the pneumatic ballistic extracorporeal shock wave therapy device will not reversely impact the safety valve, making the main system work more smoothly. Further, an air pressure transmitter is used to detect the pressure of the gas storage tank. After conversion by the AD data acquisition module, the signal is sent to the MCU chip. At the same time, the MCU chip collects the pressure of the electric proportional valve through the AD data acquisition module. The MCU chip controls the operation of the air pump according to the pipeline pressure parameters to improve the stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural schematic diagram of an air supply system for an extracorporeal shock wave therapy apparatus of the utility model;

[0024] Figure 2 The utility model is an electrical schematic diagram of an air supply system of an extracorporeal shock wave therapy apparatus.

[0025] Figure numbers: 1 is an air pump, 2 is an air storage tank, 3 is an oil mist separator, 4 is an electromagnetic proportional valve, 5 is a high-frequency electromagnetic valve, 6 is a first one-way valve, 7 is a second one-way valve, 8 is an air pressure transmitter, 9 is a control module, 10 is a first safety valve, 11 is a second safety valve, 12 is an AD data acquisition module, 13 is a DA data output module, 14 is an intermediate relay, 15 is a communication unit, 16 is a touch screen, and 17 is a MOS drive circuit. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0027] Example 1

[0028] like Figure 1~2 As shown, a novel extracorporeal shock wave therapy instrument air supply system comprises an air pump 1, an air storage tank 2, an oil mist separator 3, an electromagnetic proportional valve 4 and a high-frequency electromagnetic valve 5 which are connected in sequence, a first one-way valve 6 is arranged between the air pump 1 and the air storage tank 2, an inlet of the first one-way valve 6 is connected to the air pump 1, and an outlet is connected to the air storage tank 2, a second one-way valve 7 is arranged between the high-frequency electromagnetic valve 5 and the electromagnetic proportional valve 4, an inlet of the second one-way valve 7 is connected to the electromagnetic proportional valve 4, and an outlet is connected to the high-frequency electromagnetic valve 5;

[0029] The gas storage tank 2 is connected to an air pressure transmitter 8, and the output end of the air pressure transmitter 8 is connected to a control module 9;

[0030] The air pump 1 includes a motor, and the motor is electrically connected to the control module 9;

[0031] The control module 9 is also electrically connected to the electromagnetic proportional valve 4;

[0032] The control module 9 is also electrically connected to the high-frequency solenoid valve 5 .

[0033] Preferably, a first safety valve 10 is connected between the gas storage tank 2 and the oil mist separator 3 , and a second safety valve 11 is provided between the inlet of the second one-way valve 7 and the electromagnetic proportional valve 4 .

[0034] Preferably, the control module 9 includes an MCU chip, the MCU chip is electrically connected to an AD data acquisition module 12 and a DA data output module 13, and the MCU chip is connected to the air pressure transmitter 8 and the feedback end of the electromagnetic proportional valve 4 through the AD data acquisition module 12;

[0035] The MCU chip is connected to the control end of the electromagnetic proportional valve 4 through the DA data output module 13 .

[0036] like Figure 2 As shown, in this embodiment, the MCU chip adopts the STM32 single-chip microcomputer, the DA data output module 13 adopts the TLC5615 chip, and the AD data acquisition module 12 adopts the TLC549 chip. The AD data acquisition module 12 and the DA data output module 13 are connected to the STM32 single-chip microcomputer through the SPI serial port.

[0037] Preferably, the output end of the MCU chip is connected to a MOS drive circuit 17, the output end of the MOS drive circuit 17 is connected to an intermediate relay 14, the coil of the intermediate relay 14 is connected to the output end of the MOS drive circuit 17, the normally open contact of the intermediate relay 14 is connected to the motor, and the motor is connected to a 220V power supply through the normally open contact of the intermediate relay 14.

[0038] The MOS driving circuit 17 includes a MOS tube, a G pole of the MOS tube is connected to the output end of the MCU chip, and an S pole of the MOS tube is connected to the coil of the intermediate relay 14 .

[0039] Preferably, the MCU chip is connected to a communication unit 15, and the MCU chip is connected to the control end of the high-frequency electromagnetic valve 5 through the wire of the communication unit 15. The communication unit 15 adopts an RS232 serial port module, and the communication unit 15 communicates with the MCU chip through a UART serial port.

[0040] Preferably, the MCU chip is electrically connected to a touch screen 16 via a communication unit 15. The touch screen 16 communicates with the MCU chip via an RS232 serial port module.

[0041] During operation, a start command is sent through the touch screen 16, the MCU chip controls the MOS tube to turn on, the MOS drive circuit 17 energizes the coil of the intermediate relay 14, closes the normally open contact of the intermediate relay 14, and the motor is turned on to start the electric pump 1.

[0042] The MCU chip collects the pressure signal of the electromagnetic proportional valve 4 through the AD data acquisition module 12 (the MCU chip sets the pressure threshold for comparison operation), and the MCU chip drives the electromagnetic proportional valve 4 through the DA data output module 13 to adjust the valve opening of the electromagnetic proportional valve 4;

[0043] At the same time, the MCU chip drives the high-frequency electromagnetic valve 5 to open through the communication unit 15, and the gas pushes the second one-way valve 7 to output, which serves as the power source of the pneumatic ballistic extracorporeal shock wave therapy device.

[0044] The air pressure transmitter 8 detects the gas pressure in the gas tank 2 in real time and sends it to the MCU chip through the AD data acquisition module 12. When the detection value of the air pressure transmitter 8 is less than the minimum air pressure threshold set by the MCU chip, the MCU chip controls the air pump 1 to work and pressurize the system.

[0045] If the detection value of the air pressure transmitter 8 is greater than the maximum air pressure threshold set by the MCU chip, the MCU chip controls the air pump 1 to stop working.

[0046] After the air pump 1 stops working, when it needs to be started again, the back pressure at the working outlet of the air pump 1 is reduced to "0" due to the installation of the first one-way valve 6, thereby ensuring the stable start-up of the air pump 1.

[0047] When the pneumatic ballistic extracorporeal shock wave therapy device is working, reverse impact pressure will be generated. Due to the installation of the second one-way valve 7, the reverse impact pressure is shielded, thereby ensuring the stable operation of the system.

[0048] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. An extracorporeal shock wave therapy device air supply system, comprising an air pump (1), an air storage tank (2), an oil mist separator (3), an electromagnetic proportional valve (4) and a high-frequency electromagnetic valve (5) connected in sequence, characterized in that: A first one-way valve (6) is arranged between the air pump (1) and the air storage tank (2), the inlet of the first one-way valve (6) being connected to the air pump (1) and the outlet being connected to the air storage tank (2); a second one-way valve (7) is arranged between the high-frequency solenoid valve (5) and the solenoid proportional valve (4), the inlet of the second one-way valve (7) being connected to the solenoid proportional valve (4) and the outlet being connected to the high-frequency solenoid valve (5); The gas storage tank (2) is connected to an air pressure transmitter (8), and the output end of the air pressure transmitter (8) is connected to a control module (9); The air pump (1) comprises a motor, and the motor is electrically connected to the control module (9); The control module (9) is also electrically connected to the electromagnetic proportional valve (4); The control module (9) is also electrically connected to the high-frequency solenoid valve (5).

2. The extracorporeal shock wave therapy apparatus gas supply system according to claim 1, characterized in that: A first safety valve (10) is connected between the gas storage tank (2) and the oil mist separator (3), and a second safety valve (11) is provided between the inlet of the second one-way valve (7) and the electromagnetic proportional valve (4).

3. The extracorporeal shock wave therapy apparatus gas supply system according to claim 1, characterized in that: The control module (9) comprises an MCU chip, the MCU chip is electrically connected to an AD data acquisition module (12) and a DA data output module (13), and the MCU chip is connected to the air pressure transmitter (8) and the feedback end of the electromagnetic proportional valve (4) through the AD data acquisition module (12); The MCU chip is connected to the control end of the electromagnetic proportional valve (4) via the DA data output module (13).

4. The extracorporeal shock wave therapy apparatus gas supply system according to claim 3, characterized in that: The output end of the MCU chip is connected to a MOS drive circuit (17), the output end of the MOS drive circuit (17) is connected to an intermediate relay (14), the coil of the intermediate relay (14) is connected to the output end of the MOS drive circuit (17), and the normally open contact of the intermediate relay (14) is connected to the motor.

5. The extracorporeal shock wave therapy apparatus gas supply system according to claim 3, characterized in that: The MCU chip is connected to a communication unit (15), and the MCU chip is connected to the control end of the high-frequency solenoid valve (5) via an electric wire of the communication unit (15).

6. The extracorporeal shock wave therapy apparatus gas supply system according to claim 5, characterized in that: The MCU chip is electrically connected to a touch screen (16) via a communication unit (15).

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