Medium and low frequency cycle electrical stimulation treatment device

Abstract

The utility model relates to a low and medium frequency cyclic wave electrical stimulation treatment device which comprises a main control chip, a power supply module and a waveform output module connected with a left electrode and a right electrode, the waveform output module is provided with an A channel output circuit and a B channel output circuit, and the A channel output circuit and the B channel output circuit are respectively provided with a left output circuit and a right output circuit. Each electrode is correspondingly connected with respective A and B channel output circuits, the A channel output circuit and the B channel output circuit have the same structure, and each of the A channel output circuit and the B channel output circuit comprises a left output circuit and a right output circuit which have the same structure and are arranged in parallel, so that four same left A output circuits, left B output circuits, right A output circuits and right B output circuits are formed; the left electrode and the right electrode in the device provide double-channel output, the double channels can independently output low and medium frequency electrical stimulation waveforms, synchronous waveform output or crossed waveform output can be achieved, direct crossing and mixing of different output modes are achieved, and diversification of the output modes is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrostimulation therapy, in particular to a medium and low frequency cycle electrostimulation therapy device. Background Art

[0002] The impact of electrostimulation therapy equipment on human acupoints can cause the contraction movement of local muscles, promote the activities of local muscles, increase the relative movement between muscle tissues, and at the same time have a positioning stimulation effect on human acupoints, which is helpful for relieving some problems of local pain and local muscle atrophy, and has been recognized by the majority of doctors and patients, and has been widely used in the physiotherapy rooms and rehabilitation departments of hospitals.

[0003] The electrostimulation therapy equipment in the prior art has a single output mode, insufficient flexibility in application when used by doctors and patients, few adjustable modes, and cannot meet the different needs of different patients, so it is necessary to optimize and improve. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the above problems and provide a medium and low frequency cycle electrostimulation therapy device.

[0005] The technical solution of the utility model is: a medium and low frequency cycle electrostimulation therapy device, including a main control chip, a power supply module, and a waveform output module connected to the left and right two electrodes. The power supply module provides 15V, 12V, 5V, and 3.3V DC power supplies. The 15V power supply is realized through an AC-DC conversion module, and the other three power supplies are realized through a DC voltage conversion module. The waveform output module is provided with an A-channel output circuit and a B-channel output circuit. Both the A-channel output circuit and the B-channel output circuit are provided with left and right output circuits. Each electrode is respectively connected to its own A-channel output circuit and B-channel output circuit. The A-channel output circuit and the B-channel output circuit have the same structure, and both include a left output circuit and a right output circuit arranged in parallel with the same structure, forming four identical left A output circuits, left B output circuits, right A output circuits, and right B output circuits. The left and right two electrodes in the device both provide dual-channel outputs, and the dual channels respectively output medium and low frequency electrostimulation waveforms separately, and can output waveforms synchronously or crosswise to realize the cross and mixing of different output modes directly, and improve the diversification of output modes.

[0006] The main control chip is connected to the A-channel relay circuit to respectively control the outputs of the two output circuits in the A-channel

[0007] and is also connected to the B-channel relay circuit to respectively control the outputs of the two output circuits in the B-channel, and is used to control the on and off of each output circuit.

[0008] The main control chip is connected to the amplitude voltage control module to adjust the output voltage of each output circuit, and the adjustment range is between 0V and 200V. The voltage control module is respectively connected to the left A output circuit, the left B output circuit, the right A output circuit, and the right B output circuit through four amplitude control modules.

[0009] Preferably, the amplitude voltage control module uses a TLC7225C chip. This chip is connected to a 12V power supply on both sides. The input end of this chip is connected to the main control chip to obtain digital signals, and the four output ends of this chip are connected to four amplitude control modules. The four amplitude control modules are centered around an LM324 amplifier and are powered by 12V. They include four amplified output ends, and the four amplified output ends are respectively connected to the four output circuits. First, the digital signal sent by the main control chip is converted into an analog signal, and then it is amplified by the amplifier and sent to the four output circuits. Specifically, pins 3 and 4, 20 and 21 of the TLC7225C chip are connected to a 12V power supply through a circuit, pin 3 is grounded, pins 9 - 19 are connected to the main control chip, pin 1 is connected to pin 5 of the LM324 amplifier, pin 2 is connected to pin 3 of the LM324 amplifier, pin 23 is connected to pin 12 of the LM324 amplifier, and pin 24 is connected to pin 10 of the LM324 amplifier;

[0010] Pin 4 of the LM324 amplifier is connected to a 12V power supply, pins 2, 6, 9, and 13 are all grounded through resistors, and each output pin of the amplifier is connected in parallel with the adjacent grounded pin through a resistor to form each output end.

[0011] Preferably, the four identical output circuits all include an input side, an output side, and an adjustment side. The input side and the output side are connected by transformer A, and the output side and the adjustment side are connected by transformer B.

[0012] The high - voltage end of the input side is respectively connected to a 15V power supply and the amplified output end, and the low - voltage end of the input side is connected to the main control chip and grounded; the high - voltage end of the input side is centered around a triode. The collector of this triode is connected to a 15V power supply, and the collector is also grounded through a parallel capacitor; the base of this triode is connected to the amplified output end, and the emitter of the triode is connected to the transformer. The emitter and the transformer are grounded through a parallel capacitor, resistor, and diode;

[0013] The low - voltage end of the input side is also centered around a triode. The base of this triode is connected to the main control chip after being serially connected with a resistor, the collector is connected to transformer A, the emitter is grounded, a diode is connected between the collector and the emitter, and a capacitor is connected between the base and the collector; <000003>

[0014] The output side is connected to the electrode connection plug. A relay switch is provided on the output side and the connected wire. The output side is connected to two wires connected to the electrode socket, and is connected to the output end of Transformer A through a parallel resistor and capacitor. The output side wire is connected in series to the two sides of Transformers A and B.

[0015] The A-channel relay circuit and the B-channel relay circuit have the same structure. The relay circuit includes a relay coil connected in parallel with a diode. The upper end of the relay coil is connected to the 5V power supply, and the lower end is connected to the main control chip through a transistor to obtain a signal and grounded. Specifically, the base of the transistor is connected to the output interface of the main control chip, the emitter is grounded, the lower end of the relay coil is connected to the collector of the transistor, and a diode is connected in parallel with the relay coil. The operation of the relay switch is controlled by this relay circuit.

[0016] The two wires on the adjustment side are connected to both ends of the adjustable resistor, and the adjustment joint of the adjustable resistor is grounded. Specifically, the adjustable resistor VR is first connected in parallel with a resistor. One end of the adjustable resistor after parallel connection is then connected in series with a resistor and a diode to Transformer B, and the other end is connected to Transformer B and grounded at the same time. The adjustment joint of the adjustable resistor VR is first connected in series with a resistor, and then through a parallel capacitor and The zener diode is grounded; the adjustable resistor uses a knob-type potentiometer to adjust the current of the output waveform Intensity.

[0017] Preferably, the power supply module includes an AC-to-DC unit and a DC conversion unit, which provide different voltage supplies for each component of the treatment device, covering low-voltage AC, 15V, 12V, 5V, and 3.3V.

[0018] The AC-to-DC unit includes an AC side and a DC conversion side connected to both sides of the mains transformer. The two ends of the wire on the AC side are connected to the live wire and the neutral wire. A capacitor is connected in parallel between the live wire and the neutral wire on the AC side. The DC conversion side is connected to the mains transformer through the switching power supply IRM-60-15 to convert alternating current into direct current. A capacitor is connected in parallel between the two output wires of the DC conversion side transformer, and a 15V power supply interface is output.

[0019] The described DC conversion unit includes a 12V circuit, a 5V circuit, and a 3.3V circuit. The 12V circuit and the 5V circuit have the same structure. The 12V circuit uses an LM2596S-12 step-down chip. Pin 1 of the LM2596S-12 in the 12V circuit is connected to a 15V power supply interface and is grounded through two parallel capacitors at the same time. Pin 2 is connected to the 12V power supply interface after being connected in series with an inductor. Pin 4 is connected in parallel with the 12V power supply interface. The 12V power supply interface is grounded through two parallel capacitors. Pin 2 is grounded through a diode. Pins 3, 5, and 6 are grounded. The 5V circuit uses an LM2596S-5 step-down chip; since the structure of the 5V circuit is the same as that of the above-mentioned 12V circuit, it will not be repeated. The input end of the 3.3V circuit is connected to a 5V power supply interface and uses an ams1117-3.3 step-down chip. Pin 3 of the ams1117-3.3 is connected to the 5V power supply interface, pin 2 is connected to the 3.3V power supply interface, pin 2 is grounded through two parallel capacitors, pin 3 is grounded through a capacitor, and pin 1 is grounded.

[0020] Preferably, the device further includes a negative pressure module. The negative pressure module includes a negative pressure pump control circuit and a negative pressure regulating valve control circuit, which provide negative pressure and control of the negative pressure intensity for the negative pressure electrode, achieving the effect of negative pressure cupping while performing electrical stimulation, and fully simulating traditional Chinese medicine therapies.

[0021] The negative pressure pump control circuit is centered around an optocoupler. The input side of the optocoupler is connected between the main control chip and the 3.3V power supply, and the output end of the optocoupler is connected to the output end of the mains transformer; specifically, pin 1 of the optocoupler MOC3041 is connected to the 3.3V power supply, pin 2 is connected to the main control chip, pin 6 is connected to the live wire of the output end of the mains transformer, pin 4 is connected to the 1 socket of the negative pressure pump wiring terminal of the double socket through a resistor, the 2 socket of the negative pressure pump wiring terminal is connected to the neutral wire of the output end of the mains transformer, a diode is connected between the connection ends of pin 4 and pin 6 to the live wire, a series of resistor and capacitor is connected between the 1 socket and the connection end of pin 6 to the live wire, and a diode is also connected between the 1 socket and the connection end of pin 6 to the live wire.

[0022] One end of the negative pressure regulating valve control circuit is connected to the 12V power supply, and the other end is connected to the main control chip through a triode. Specifically, the collector of the triode is connected to the 2 socket of the regulating valve wiring terminal. The 1 socket of the regulating valve wiring terminal is connected to the 12V power supply. A capacitor and a diode are connected in parallel between the 1 socket and the 2 socket. The base of the triode is connected to the main control chip through a resistor, and the emitter of the triode is grounded.

[0023] Preferably, there are two sets of the negative pressure modules, which are respectively used for two left and right negative pressure electrodes.

[0024] Preferably, the device further includes a drainage module, which includes a drainage pump control circuit and a drainage solenoid valve control circuit. The drainage pump control circuit has the same structure as the negative pressure pump control circuit, and the drainage solenoid valve control circuit has the same structure as the negative pressure regulating valve control circuit.

[0025] Preferably, the main control chip is connected to a main clock module, a buzzer module, a programming module, as well as a communication module and its communication interface. The main control chip is STM32F103C8; the main clock uses an 8Mhz crystal oscillator. The pin 1 of the wiring terminal of the programming module is connected to the 3.3V power supply, the pin 2 is grounded, and the pins 3 and 4 are connected to the main control chip.

[0026] The communication module uses an SP3232EEY-L / TR chip, and the communication interface uses an 8-pin wiring terminal. A capacitor is connected between the pins 1 and 3 of this chip, a capacitor is connected between the pins 4 and 5, the pin 15 is grounded, the pin 2 is grounded through a capacitor, the pin 16 is connected to the 3.3V power supply, and the pin 16 is also grounded through a capacitor, the pin 6 is grounded through a capacitor, the pins 10-11-12 are connected in parallel and then connected to the main control chip, the pin 9 is connected to the main control chip, and the pin 9 is also connected to the 3.3V power supply through a parallel-connected resistor and capacitor.

[0027] The pin 8 forms a connection terminal 1 through a resistor and is connected to the pin 5 of the communication interface; the connection terminal 1 is grounded through a capacitor.

[0028] The pins 7-13-14 are connected in parallel and then form a connection terminal 2 through a resistor and are connected to the pins 3 and 4 of the communication interface; the connection terminal 2 is grounded through a capacitor.

[0029] The pins 1-2 of the communication interface are connected in parallel and grounded, and the pins 7-8 are connected in parallel and connected to the 15V power supply.

[0030] A medium and low frequency sinusoidal electrostimulation therapy device of the present utility model includes a main control chip, a power supply module, and a waveform output module connected to the left and right two electrodes. The waveform output module is provided with an A-channel output circuit and a B-channel output circuit. Both the A and B-channel output circuits are provided with left and right output circuits. Each electrode is respectively connected to its own A and B-channel output circuits. The A-channel output circuit and the B-channel output circuit have the same structure, and both include a left output circuit and a right output circuit arranged in parallel with the same structure, forming four identical left A output circuits, left B output circuits, right A output circuits, and right B output circuits.

[0031] Both the left and right two electrodes in the device provide dual-channel outputs. The dual channels can separately output medium and low frequency electrostimulation waveforms, and can output waveforms synchronously or cross waveforms to achieve the cross and mixing of different output modes, and improve the diversification of output modes. Description of the Drawings

[0032] Figure 1 is one of the A-channel output circuits (right A) of the waveform output module of the treatment device;

[0033] Figure 2 is the second A-channel output circuit (left A) of the waveform output module of the treatment device;

[0034] Figure 3 is one of the B-channel output circuits (right B) of the waveform output module of the treatment device;

[0035] Figure 4 is the second B-channel output circuit (left B) of the waveform output module of the treatment device;

[0036] Figure 5 is the A-channel output control circuit of the treatment device;

[0037] Figure 6 is the B-channel output control circuit of the treatment device;

[0038] Figure 7 is the amplitude voltage control circuit of the treatment device;

[0039] Figure 8 is the four-channel amplitude control circuit of the treatment device;

[0040] Figure 9 is the main control chip of the treatment device and its auxiliary circuit;

[0041] Figure 10 is the circuit of the communication module of the treatment device;

[0042] Figure 11 is the circuit of the voltage module of the treatment device;

[0043] Figure 12 are the control circuits of two negative pressure pumps of the treatment device;

[0044] Figure 13 are the control circuits of two negative pressure solenoid valves of the treatment device;

[0045] Figure 14 is the control circuit of the drain solenoid valve of the treatment device;

[0046] Figure 15 is a schematic diagram of the system architecture of the medium and low frequency wave electrostimulation treatment device in Embodiment 1;

[0047] Figure 16 is a schematic diagram of the system architecture of the medium and low frequency wave electrostimulation treatment device in Embodiment 2;

[0048] Figure 17It is a schematic diagram of the system architecture of the medium and low frequency pulsed electrical stimulation therapy device in Embodiment 3;

[0049] Figure 18 It is the synchronous continuous waveform output by the device;

[0050] Figure 19 It is the synchronous fluctuating waveform output by the device;

[0051] Figure 20 It is the cross - fluctuating waveform output by the device.

[0052] In the figure: 1. Flat electrode, 2. Negative pressure electrode, 3. Negative pressure tube, 4. Negative pressure solenoid valve, 5. Negative pressure pump, 6. Control circuit, 7. Output module (touch screen), 8. Host, 9. Drain pump, 91. Negative pressure filter, 92. Drain solenoid valve. Detailed implementation mode

[0053] Embodiment 1: Refer to Figure 1-11 、 Figure 15 , in the figure, a medium and low frequency pulsed electrical stimulation therapy device includes a main control chip, a power supply module, and a waveform output module connected to the left and right electrodes. The power supply module provides 15V, 12V, 5V, and 3.3V DC power supplies. The 15V power supply is achieved through an AC - to - DC conversion module, and the other three power supplies are achieved through a DC voltage conversion module; the shown waveform output module is provided with an A - channel output circuit and a B - channel output circuit. Both the A - channel output circuit and the B - channel output circuit are provided with left and right output circuits. Each electrode is respectively connected to its own A - channel and B - channel output circuits. The A - channel output circuit and the B - channel output circuit have the same structure, and both include left and right output circuits arranged in parallel with the same structure, forming four identical left A output circuits, left B output circuits, right A output circuits, and right B output circuits; both the left and right electrodes in the device provide dual - channel outputs. The dual - channels can separately output medium and low frequency electrical stimulation waveforms, and can output synchronous waveforms or cross waveforms to achieve the cross and mixing of different output modes, enhancing the diversification of output modes. Each group of output treatment modes has a total of 3 types: ① Synchronous continuous (such as Figure 18 ); ② Synchronous fluctuation (such as Figure 19 ); ③ Cross fluctuation (such as Figure 20 ).

[0054] The main control chip is connected to the A - channel relay circuit to respectively control the outputs of the two output circuits in the A - channel

[0055] ; it is also connected to the B - channel relay circuit to respectively control the outputs of the two output circuits in the B - channel; it is used to control the on - off of each output circuit.

[0056] The main control chip is connected to the amplitude voltage control module to adjust the output voltages of each output circuit, and the adjustment range is between 0V and 200V. The voltage control module is respectively connected to the left A output circuit, the left B output circuit, the right A output circuit, and the right B output circuit through four amplitude control modules.

[0057] The amplitude voltage control module uses a TLC7225C chip. This chip is connected to a 12V power supply on both sides. The input end of this chip is connected to the main control chip to obtain digital signals, and the four output ends of this chip are connected to four amplitude control modules. The four amplitude control modules are centered around an LM324 amplifier and are powered by 12V, including four amplified output ends, and the four amplified output ends are respectively connected to the four output circuits mentioned above. First, the digital signal sent by the main control chip is converted into an analog signal, and then it is amplified by the amplifier and sent to the four output circuits. Specifically, pins 3 and 4, 20 and 21 of the TLC7225C chip are connected to a 12V power supply through a circuit, pin 3 is grounded, pins 9 - 19 are connected to the main control chip, pin 1 is connected to pin 5 of the LM324 amplifier, pin 2 is connected to pin 3 of the LM324 amplifier, pin 23 is connected to pin 12 of the LM324 amplifier, and pin 24 is connected to pin 10 of the LM324 amplifier;

[0058] Pin 4 of the LM324 amplifier is connected to a 12V power supply, pins 2, 6, 9, and 13 are all grounded through resistors, and each output pin of the amplifier is connected in parallel with the adjacent grounded pin through a resistor to form each output end.

[0059] The four identical output circuits all include an input side, an output side, and an adjustment side. The input side and the output side are connected by transformer A, and the output side and the adjustment side are connected by transformer B.

[0060] The high - voltage end of the input side is respectively connected to a 15V power supply and the amplified output end, and the low - voltage end of the input side is connected to the main control chip and grounded; the high - voltage end of the input side is centered around a triode. The collector of this triode is connected to a 15V power supply, and the collector is also grounded through a parallel capacitor; the base of this triode is connected to the amplified output end, and the emitter of the triode is connected to the transformer. The emitter and the transformer are grounded through a parallel capacitor, resistor, and diode;

[0061] The low - voltage end of the input side is also centered around a triode. The base of this triode is connected to the main control chip after being connected in series with a resistor, the collector is connected to transformer A, the emitter is grounded, a diode is connected between the collector and the emitter, and a capacitor is connected between the base and the collector;

[0062] The output side is connected to the electrode connection plug. A relay switch is provided on the output side and the connected wire. The output side is connected to two wires connected to the electrode socket, and is connected to the output end of Transformer A through a parallel resistor and capacitor. The output side wire is connected in series to the two sides of Transformers A and B.

[0063] The A-channel relay circuit and the B-channel relay circuit have the same structure. The relay circuit includes a relay coil in parallel with a diode. The upper end of the relay coil is connected to a 5V power supply, and the lower end is connected to the main control chip through a transistor to obtain a signal and grounded; specifically, the base of the transistor is connected to the output interface of the main control chip, the emitter is grounded, the lower end of the relay coil is connected to the collector of the transistor, and a diode is connected in parallel with the relay coil. The operation of the relay switch is controlled by this relay circuit.

[0064] The two wires on the adjustment side are connected to both ends of the adjustable resistor, and the adjustment joint of the adjustable resistor is grounded. Specifically, the adjustable resistor VR is first connected in parallel with a resistor, and then one end of the parallel adjustable resistor is connected in series with a resistor and a diode to Transformer B, and the other end is connected to Transformer B and grounded at the same time; the adjustment joint of the adjustable resistor VR is first connected in series with a resistor, and then through a parallel capacitor and The zener diode is grounded, and the adjustable resistor uses a knob-type potentiometer to adjust the current intensity of the output.

[0065] The power supply module includes an AC-DC conversion unit and a DC conversion unit, which provide different voltage supplies for each component of the treatment device, covering low-voltage AC, 15V, 12V, 5V, and 3.3V.

[0066] The AC-DC conversion unit includes an AC side and a DC conversion side connected to both sides of the mains transformer. The two ends of the wire on the AC side are connected to the live wire and the neutral wire, and a capacitor is connected in parallel between the live wire and the neutral wire on the AC side; the DC conversion side is connected to the mains transformer through the switching power supply IRM-60-15 to convert AC into DC. A capacitor is connected in parallel between the two output wires of the DC conversion side transformer, and a 15V power supply interface is output.

[0067] The described DC conversion unit includes a 12V circuit, a 5V circuit, and a 3.3V circuit. The 12V circuit and the 5V circuit have the same structure. The 12V circuit uses an LM2596S-12 step-down chip. Pin 1 of the LM2596S-12 in the 12V circuit is connected to a 15V power supply interface and is grounded through two parallel capacitors at the same time. Pin 2 is connected to the 12V power supply interface after being connected in series with an inductor. Pin 4 is connected in parallel with the 12V power supply interface. The 12V power supply interface is grounded through two parallel capacitors. Pin 2 is grounded through a diode. Pins 3, 5, and 6 are grounded. The 5V circuit uses an LM2596S-5 step-down chip; since the structure of the 5V circuit is the same as that of the above 12V circuit, it will not be restated. The input end of the 3.3V circuit is connected to a 5V power supply interface and uses an ams1117-3.3 step-down chip. Pin 3 of the ams1117-3.3 is connected to the 5V power supply interface, pin 2 is connected to the 3.3V power supply interface, pin 2 is grounded through two parallel capacitors, pin 3 is grounded through a capacitor, and pin 1 is grounded.

[0068] The described main control chip is connected with a main clock module, a buzzer module, a programming module, and a communication module and its communication interface. The main control chip is STM32F103C8; the main clock uses a crystal oscillator of 8Mhz. Pin 1 of the terminal of the programming module is connected to 3.3V power supply, pin 2 is grounded, and pins 3 and 4 are connected to the main control chip.

[0069] The communication module uses an SP3232EEY-L / TR chip, and the communication interface uses an 8-pin terminal block. A capacitor is connected between pin 1 and pin 3 of this chip, a capacitor is connected between pin 4 and pin 5, pin 15 is grounded, pin 2 is grounded through a capacitor, pin 16 is connected to 3.3V power supply, and pin 16 is grounded through a capacitor at the same time. Pin 6 is grounded through a capacitor. Pins 10 - 11 - 12 are connected in parallel and then connected to the main control chip. Pin 9 is connected to the main control chip, and pin 9 is connected to 3.3V power supply through a parallel resistor and capacitor at the same time.

[0070] Pin 8 forms connection terminal 1 through a resistor and is connected to pin 5 of the communication interface; connection terminal 1 is grounded through a capacitor;

[0071] Pins 7 - 13 - 14 are connected in parallel and then form connection terminal 2 through a resistor and are connected to pins 3 and 4 of the communication interface; connection terminal 2 is grounded through a capacitor;

[0072] Pins 1 - 2 of the communication interface are connected in parallel and then grounded, and pins 7 - 8 are connected in parallel and then connected to 15V power supply.

[0073] Example 2: Refer to Figure 1-13 、 Figure 16 Example 2 is basically the same as Example 1. The same parts will not be restated. The differences are: In Example 2, two negative pressure electrodes are added. The negative pressure electrodes are connected to a negative pressure pump and a negative pressure control valve through negative pressure pipes.

[0074] The device circuit also includes a negative pressure module, which includes a negative pressure pump control circuit and a negative pressure regulating valve control circuit, providing negative pressure and negative pressure intensity control to the negative pressure electrode, achieving the effect of negative pressure cupping while achieving electrical stimulation, fully simulating traditional Chinese medicine therapy, and at the same time improving the contact effect between the electrode and the skin, thereby improving the electrical stimulation effect.

[0075] The negative pressure pump control circuit is centered on the optocoupler. The input side of the optocoupler is connected to the main control chip and the 3.3V power supply, and the output of the optocoupler is connected to the output of the AC transformer. Specifically, pin 1 of the optocoupler MOC3041 is connected to the 3.3V power supply, pin 2 is connected to the main control chip, pin 6 is connected to the live wire of the AC transformer output, pin 4 is connected to the 1st socket of the double-socket negative pressure pump terminal through a resistor, and the 2nd socket of the negative pressure pump terminal is connected to the neutral wire of the AC transformer output. A diode is connected between the live wire connection ends of pins 4 and 6, a resistor and capacitor are connected in series between the 1st socket and the live wire connection ends of pin 6, and a diode is also connected between the 1st socket and the live wire connection ends of pin 6.

[0076] One end of the negative pressure regulating valve control circuit is connected to a 12V power supply, and the other end is connected to the main control chip via a transistor. Specifically, the collector of the transistor is connected to jack 2 of the regulating valve terminal block, and jack 1 of the regulating valve terminal block is connected to the 12V power supply. A capacitor and diode are connected in parallel between jacks 1 and 2. The base of the transistor is connected to the main control chip via a resistor, and the emitter of the transistor is grounded.

[0077] There are two sets of negative pressure modules, one for each of the left and the other for the right negative pressure electrodes.

[0078] Example 3: See Figure 1-14 、 Figure 17 The third embodiment is basically the same as the second embodiment, and the similarities are not repeated. The difference is that a drainage pump is added to the third embodiment.

[0079] The device also includes a drainage module, which includes a drainage pump control circuit and a drainage solenoid valve control circuit. The drainage pump control circuit has the same structure as the negative pressure pump control circuit, and the drainage solenoid valve control circuit has the same structure as the negative pressure regulating valve control circuit.

[0080] During the adsorption process of the electrode, some liquid needs to be applied to the sponge inside the electrode: water or disinfectant, etc. During the negative pressure adsorption process of the negative pressure pump, part of the liquid is sucked into the main unit from the negative pressure tube, and collected through the negative pressure filter. The negative pressure filter is connected in series to the negative pressure tube, and then the liquid is discharged from the filter outside the main unit through the water pump.

Claims

1. A medium and low frequency electrical stimulation therapy device, comprising a main control chip, a power supply module, and a waveform output module connected to two left and right electrodes. The power supply module provides DC power supplies of 15V, 12V, 5V, and 3.3V. It is characterized in that: The waveform output module shown is provided with an A-channel output circuit and a B-channel output circuit. Both the A-channel and B-channel output circuits are provided with left and right output circuits. Each electrode is respectively connected to its own A-channel and B-channel output circuits. The A-channel output circuit and the B-channel output circuit have the same structure, and both include a left output circuit and a right output circuit arranged in parallel with the same structure, forming four identical left A-output circuits, left B-output circuits, right A-output circuits, and right B-output circuits. The main control chip is connected to the A-channel relay circuit to respectively control the outputs of the two output circuits in the A-channel. It is also connected to the B-channel relay circuit to respectively control the outputs of the two output circuits in the B-channel. The main control chip is connected to the amplitude voltage control module, and the voltage control module is respectively connected to the left A-output circuit, left B-output circuit, right A-output circuit, and right B-output circuit through four amplitude control modules.

2. The medium and low frequency electrical stimulation therapy device according to claim 1, characterized in that: The amplitude voltage control module uses a TLC7225C chip. This chip is connected to a 12V power supply on both sides. The input end of this chip is connected to the main control chip to obtain digital signals. The four output ends of this chip are connected to the four amplitude control modules. The four amplitude control modules are centered on an LM324 amplifier and are powered by 12V, including four amplified output ends, and the four amplified output ends are respectively connected to the four output circuits.

3. The medium and low frequency sine wave electrical stimulation treatment device according to claim 2, wherein: The four identical output circuits all include an input side, an output side, and an adjustment side. The input side and the output side are connected by transformer A, and the output side and the adjustment side are connected by transformer B. The high-voltage end of the input side is respectively connected to a 15V power supply and the amplified output end, and the low-voltage end of the input side is connected to the main control chip and grounded. The output side is connected to the electrode connection plug. A relay switch is provided on the wire connected to the output side. The wire on the output side is connected in series on transformers A and B on both sides. The A-channel relay circuit and the B-channel relay circuit have the same structure. The relay circuit includes a relay coil connected in parallel with a diode. The upper end of the relay coil is connected to a 5V power supply, and the lower end is connected to the main control chip through a triode to obtain signals and is grounded. The action of the relay switch is controlled by this relay circuit. The two wires on the adjustment side are connected to both ends of a variable resistor, and the adjustment joint of the variable resistor is grounded.

4. The medium and low frequency electrostimulation therapy device according to claim 1, characterized in that: The power supply module includes an AC-DC conversion unit and a DC conversion unit. The AC-DC conversion unit includes an AC side and a rectified DC side connected to both sides of the mains transformer. The two ends of the wire on the AC side are connected to the live wire and the neutral wire. The rectified DC side is connected to the mains transformer through a switching power supply IRM-60-15 to convert alternating current into direct current and outputs a 15V power supply interface. The DC conversion unit includes a 12V circuit, a 5V circuit, and a 3.3V circuit. Among them, the 12V circuit and the 5V circuit have the same structure. The 12V circuit uses an LM2596S-12 buck chip, and the 5V circuit uses an LM2596S-5 buck chip; the input end of the 3.3V circuit is connected to the 5V power supply interface and uses an ams1117-3.3 buck chip.

5. The medium and low frequency electric stimulation therapy device according to claim 4, wherein: This device also includes a negative pressure module. The negative pressure module includes a negative pressure pump control circuit and a negative pressure regulating valve control circuit. The negative pressure pump control circuit is centered around an optocoupler. The input side of the optocoupler is connected between the main control chip and the 3.3V power supply, and the output end of the optocoupler is connected to the output end of the mains transformer. One end of the negative pressure regulating valve control circuit is connected to the 12V power supply, and the other end is connected to the main control chip through a triode.

6. The medium and low frequency electrostimulation therapy device according to claim 5, wherein: There are two sets of the negative pressure modules.

7. The medium and low frequency electrical stimulation therapy device according to claim 5, characterized in that: The device also includes a drainage module, which includes a drainage pump control circuit and a drainage solenoid valve control circuit. The drainage pump control circuit has the same structure as the negative pressure pump control circuit, and the drainage solenoid valve control circuit has the same structure as the negative pressure regulating valve control circuit.

8. The medium and low frequency sine wave electrostimulation treatment device according to claim 1, characterized in that: The main control chip is connected to a main clock module, a buzzer module, a programming module, as well as a communication module and its communication interface.

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