Electrotherapy device

Abstract

The utility model discloses an electrotherapy device, comprising a master control circuit, a first output end of which is connected with an input end of a current stimulation circuit; the output end of the current stimulation circuit is in contact with a human body; the output end of the human body voltage detection circuit is connected with the input end of the main control circuit, and the input end is in contact with a human body; the output end of the first driving circuit is connected with the output end of the voltage balancing circuit; the output end of the second driving circuit is connected with the output end of the voltage balancing circuit; and the output end of the voltage equalization circuit is connected with the input end of the current stimulation circuit. The human body voltage detection circuit detects the human body voltage of a human body in real time and sends the human body voltage to the main control circuit, so that the main control circuit accurately outputs a control signal to the first driving circuit or the second driving circuit, and it is ensured that the stimulation current applied to a patient by the current stimulation circuit changes along with the change of the human body voltage and is not too large or too small; and invalid treatment is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electrotherapy, in particular to an electrotherapy device. Background Art

[0002] Electrotherapy is widely used in the field of rehabilitation. It has the effects of analgesia, anti-inflammatory, and improving blood circulation. There are many kinds of treatment equipment on the market, including high, medium and low frequency. During the treatment process, different patients have different human body impedances. Under the same stimulation intensity, the stimulation voltage required for each individual is also different. If the voltage is too high during stimulation, there is a risk of causing physical harm to the patient. If the stimulation voltage is too low, the treatment effect cannot be achieved. Utility Model Content

[0003] Based on this, it is necessary to propose an electrotherapy device to address the above problems.

[0004] An electrotherapy device, comprising:

[0005] A main control circuit, wherein a first output terminal is connected to an input terminal of a current stimulation circuit, and is used to output a stimulation signal to the current stimulation circuit;

[0006] The output end of the current stimulation circuit is used to contact the human body, and after receiving the stimulation signal, outputs a stimulation current to the human body to electrically stimulate the human body;

[0007] A human body voltage detection circuit, wherein the output end is connected to the input end of the main control circuit, the input end is used to contact the human body, detect the human body voltage of the human body, and output the human body voltage to the main control circuit; the second output end of the main control circuit is connected to the input end of the first drive circuit, the third output end of the main control circuit is connected to the input end of the second drive circuit, and is also used to receive the human body voltage and output a control signal to the first drive circuit or the second drive circuit;

[0008] The first driving circuit, whose output end is connected to the output end of the voltage equalization circuit, is used to receive the control signal and output a first driving signal to the voltage equalization circuit;

[0009] The second driving circuit has an output end connected to the output end of the voltage balancing circuit, and is used to receive the control signal and output a second driving signal to the voltage balancing circuit;

[0010] The output end of the voltage balancing circuit is connected to the input end of the current stimulation circuit, and is used to receive the first driving signal and output the first working voltage to the current stimulation circuit; or receive the second driving signal and output the second working voltage to the current stimulation circuit; the current stimulation circuit is also used to receive the first working voltage or the second working voltage, and output the corresponding stimulation current.

[0011] In one embodiment, the voltage balancing circuit comprises:

[0012] a first voltage equalization circuit, whose input end is connected to the output end of the first driving circuit, and is used to receive the first driving signal and output the first working voltage to the current stimulation circuit;

[0013] The second voltage equalization circuit has an input end connected to the output end of the second driving circuit, and is used to receive the second driving signal and output the second operating voltage to the current stimulation circuit.

[0014] In one embodiment, the main control circuit includes: a main control chip;

[0015] The input end of the main control chip is connected to the output end of the human body voltage detection circuit, the first output end of the main control chip is connected to the input end of the current stimulation circuit, the second output end of the main control chip is connected to the input end of the first drive circuit, and the third output end is connected to the input end of the second drive circuit.

[0016] In one embodiment, the current stimulation circuit includes: a first operational amplifier, a first MOS tube, a first capacitor, a first resistor, a twelfth resistor and an electrode interface;

[0017] The non-inverting input terminal of the first operational amplifier is connected to the output terminal of the main control circuit, the inverting input terminal of the first operational amplifier is connected to one end of the twelfth resistor, the other end of the twelfth resistor is grounded, the output terminal of the first operational amplifier is connected to one end of the first resistor, and the other end of the first resistor is connected to the gate of the first MOS tube;

[0018] The drain of the first MOS tube is connected to the first end of the electrode interface, and the source of the first MOS tube is connected to one end of the twelfth resistor;

[0019] One end of the first capacitor is connected to the inverting input terminal of the first operational amplifier, and the other end is connected to the non-inverting input terminal of the first operational amplifier;

[0020] The second end of the electrode interface is connected to the output end of the equalization circuit, and the electrode interface is connected to an electrode for discharging to a human body.

[0021] In one embodiment, the human body voltage detection circuit includes: a second operational amplifier and a second resistor;

[0022] The non-inverting input terminal of the second operational amplifier is connected to the drain of the first MOS tube, the inverting input terminal of the second operational amplifier is connected to the output terminal of the second operational amplifier, the output terminal of the second operational amplifier is connected to one end of the second resistor, and the other end of the second resistor is connected to the input terminal of the main control circuit.

[0023] In one embodiment, the human body voltage detection circuit further includes: a third resistor and a second capacitor;

[0024] One end of the third resistor is connected to the drain of the first MOS tube, and the other end of the third resistor is grounded;

[0025] The second capacitor is connected in parallel with the third resistor.

[0026] In one embodiment, the first driving circuit includes: a first driving chip, a fourth resistor, a fifth resistor, a third capacitor and a fourth capacitor;

[0027] The first input terminal and the second input terminal of the first driver chip are both connected to the output terminal of the main control circuit, and the first output terminal and the second output terminal of the first driver chip are both connected to the input terminal of the first voltage equalization circuit;

[0028] One end of the fourth resistor is connected to the first input end of the first driving chip, and the other end is grounded; the third capacitor is connected in parallel with the fourth resistor;

[0029] The fifth resistor is connected to the second input terminal of the first driving chip, and the other terminal is grounded; the fourth capacitor is connected in parallel with the fifth resistor.

[0030] In one embodiment, the second driving circuit includes: a second driving chip, a sixth resistor, a seventh resistor, a fifth capacitor and a sixth capacitor;

[0031] The first input terminal and the second input terminal of the second driving chip are both connected to the output terminal of the main control circuit, and the first output terminal and the second output terminal of the second driving chip are both connected to the input terminal of the second voltage equalization circuit;

[0032] One end of the sixth resistor is connected to the first input end of the second driving chip, and the other end is grounded; the fifth capacitor is connected in parallel with the sixth resistor;

[0033] One end of the seventh resistor is connected to the second input end of the second driving chip, and the other end is grounded; the sixth capacitor is connected in parallel with the seventh resistor.

[0034] In one embodiment, the first voltage equalization circuit includes: a second MOS transistor, a seventh capacitor and an eighth resistor, a third MOS transistor, an eighth capacitor and a ninth resistor;

[0035] The gate of the second MOS tube is connected to the first output terminal of the first driving chip, the source of the second MOS tube is connected to the input terminal of the current stimulation circuit; the drain of the second MOS tube is connected to the external power supply;

[0036] One end of the seventh capacitor is connected to the external power supply, and the other end is connected to the drain of the third MOS tube, and the eighth resistor is connected in parallel with the seventh capacitor;

[0037] The gate of the third MOS tube is connected to the second output terminal of the first driving chip, and the source of the third MOS tube is connected to the input terminal of the current stimulation circuit;

[0038] One end of the eighth capacitor is connected to the drain of the third MOS tube, and the other end is connected to the input end of the second voltage balancing circuit; the ninth resistor is connected in parallel with the eighth capacitor.

[0039] In one embodiment, the second voltage equalization circuit includes: a fourth MOS transistor, a ninth capacitor and a tenth resistor, a fifth MOS transistor, a tenth capacitor and an eleventh resistor;

[0040] The gate of the fourth MOS tube is connected to the first output terminal of the second driving chip, and the source of the fourth MOS tube is connected to the input terminal of the current stimulation circuit;

[0041] One end of the ninth capacitor is connected to the drain of the fourth MOS tube, and the other end is connected to the drain of the fifth MOS tube; the eleventh resistor is connected in parallel with the ninth capacitor;

[0042] The gate of the fifth MOS tube is connected to the second output terminal of the second driving chip, and the source of the fifth MOS tube is connected to the input terminal of the current stimulation circuit;

[0043] One end of the tenth capacitor is connected to the drain of the fifth MOS tube and the other end is grounded; the eleventh resistor is connected in parallel with the tenth capacitor.

[0044] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0045] The main control circuit outputs a stimulation signal to the current stimulation circuit; the current stimulation circuit receives the stimulation signal and outputs a stimulation current to the human body to electrically stimulate the human body; the human body voltage detection circuit detects the human body voltage of the human body and outputs the human body voltage to the main control circuit; the second output end of the main control circuit is connected to the input end of the first drive circuit, the main control circuit also receives the human body voltage and outputs a control signal to the first drive circuit or the second drive circuit; the first drive circuit receives the control signal and outputs the first drive signal to the voltage equalization circuit; the second drive circuit receives the control signal and outputs the second drive signal to the equalization circuit; the equalization circuit receives the first drive signal and outputs the first working voltage to the current stimulation circuit; or receives the second drive signal and outputs the second working voltage to the current stimulation circuit; the current stimulation circuit also receives the first working voltage and the second working voltage, and outputs the corresponding stimulation current. The present application detects the human body voltage of the human body in real time through the human body voltage detection circuit and sends it to the main control circuit, so that the main control circuit accurately outputs a control signal to the first drive circuit or the second drive circuit, ensuring that the stimulation current applied to the patient by the current stimulation circuit changes with the change of the human body voltage, and will not be too large or too small, thereby avoiding ineffective treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0047] in:

[0048] Figure 1 is a structural block diagram of an electrotherapy device in one embodiment;

[0049] Figure 2 is a circuit diagram of a first driving circuit in one embodiment;

[0050] Figure 3 is a circuit diagram of a second driving circuit in one embodiment;

[0051] Figure 4 is a circuit diagram of a first voltage equalization circuit and a second voltage equalization circuit in one embodiment;

[0052] Figure 5 is a circuit diagram of a current stimulation circuit and a human body voltage detection circuit in one embodiment;

[0053] Figure 6 FIG. 4 is a circuit diagram of a main control circuit in one embodiment. DETAILED DESCRIPTION

[0054] 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.

[0055] Electrotherapy is widely used in the field of rehabilitation, and has therapeutic effects such as analgesia, anti-inflammatory, and improving blood circulation. There are a variety of treatment devices on the market, including high, medium, and low frequency. During the treatment process, different patients have different body impedances. Under the same stimulation intensity, the stimulation voltage required for each individual is also different. If the voltage is too high during stimulation, there is a risk of causing physical harm to the patient. If the stimulation voltage is too low, the treatment effect cannot be achieved. In order to solve the above technical problems, the present application provides an electrotherapy device, such as Figure 1As shown, it includes: a main control circuit 10, a current stimulation circuit 20, a human body voltage detection circuit 30, a first drive circuit 40, a second drive circuit 50 and a voltage equalization circuit 60, wherein the first output end of the main control circuit 10 is connected to the input end of the current stimulation circuit 20, and is used to output a stimulation signal to the current stimulation circuit 20; the output end of the current stimulation circuit 20 is used to contact the human body, and after receiving the stimulation signal, the stimulation current is output to the human body to perform electrical stimulation on the human body; the output end of the human body voltage detection circuit 30 is connected to the input end of the main control circuit 10, and the input end is used to contact the human body, detect the human body voltage of the human body, and output the human body voltage to the main control circuit 10; the second output end of the main control circuit 10 is connected to the input end of the first drive circuit 40, the third output end of the main control circuit 10 is connected to the input end of the second drive circuit 50, and is also used for receiving the human body voltage and outputting a control signal to the first drive circuit 40 or the second drive circuit 50; the output end of the first drive circuit 40 is connected to the output end of the voltage equalization circuit 50, for receiving the control signal and outputting a first drive signal to the voltage equalization circuit 60; the output end of the second drive circuit 50 is connected to the output end of the voltage equalization circuit 60, for receiving the control signal and outputting a second drive signal to the voltage equalization circuit 60; the output end of the voltage equalization circuit 60 is connected to the input end of the current stimulation circuit 20, for receiving the first drive signal and outputting a first working voltage to the current stimulation circuit 20; or receiving the second drive signal and outputting a second working voltage to the current stimulation circuit 20; the current stimulation circuit 20 is also used to receive the first working voltage or the second working voltage, and output the corresponding stimulation current. The main control circuit outputs a stimulation signal to the current stimulation circuit; the current stimulation circuit receives the stimulation signal and outputs a stimulation current to the human body to electrically stimulate the human body; the human body voltage detection circuit detects the human body voltage of the human body and outputs the human body voltage to the main control circuit; the second output end of the main control circuit is connected to the input end of the first drive circuit, the main control circuit also receives the human body voltage, and outputs a control signal to the first drive circuit or the second drive circuit; the first drive circuit receives the control signal and outputs the first drive signal to the voltage equalization circuit; the second drive circuit receives the control signal and outputs the second drive signal to the equalization circuit; the equalization circuit receives the first drive signal and outputs the first working voltage to the current stimulation circuit; or receives the second drive signal and outputs the second working voltage to the current stimulation circuit; the current stimulation circuit also receives the first working voltage and the second working voltage, and outputs the corresponding stimulation current.The present application detects the human body voltage in real time through a human body voltage detection circuit and sends it to the main control circuit, so that the main control circuit accurately outputs a control signal to the first drive circuit or the second drive circuit, ensuring that the stimulation current applied to the patient by the current stimulation circuit changes with the change of the human body voltage, and will not be too large or too small, thereby avoiding the phenomenon that the treatment effect cannot be achieved.

[0056] In one embodiment, Figure 4 As shown, the voltage balancing circuit 60 includes: a first voltage balancing circuit 601 and a second voltage balancing circuit 602, wherein the input end of the first voltage balancing circuit 601 is connected to the output end of the first driving circuit 40, for receiving the first driving signal, and outputting the first working voltage to the current stimulation circuit 20; the input end of the second voltage balancing circuit 602 is connected to the output end of the second driving circuit 50, for receiving the second driving signal, and outputting the second working voltage to the current stimulation circuit 20.

[0057] In one embodiment, Figure 6 As shown, the main control circuit 10 includes: a main control chip U3; the input terminal PA7 of the main control chip U3 is connected to the output terminal of the human body voltage detection circuit 30, the first output terminal PA5 of the main control chip U3 is connected to the input terminal of the current stimulation circuit 20, the second output terminal PB1 / PB2 of the main control chip U3 is connected to the input terminal of the first drive circuit 40, and the third output terminal PB7 / PB8 is connected to the input terminal of the second drive circuit 50.

[0058] In one embodiment, Figure 5 As shown, the current stimulation circuit 20 includes: a first operational amplifier U147A, a first MOS tube Q71, a first capacitor C1071, a first resistor R797, a twelfth resistor R795 and an electrode interface J6; the in-phase input end of the first operational amplifier U147A is connected to the output end of the main control circuit 10, the inverting input end of the first operational amplifier U147A is connected to one end of the twelfth resistor R795, the other end of the twelfth resistor R795 is grounded, the output end of the first operational amplifier U147A is connected to one end of the first resistor R797, and the first resistor The other end of R797 is connected to the gate of the first MOS tube Q71; the drain of the first MOS tube Q71 is connected to the first end 1 of the electrode interface J6, and the source of the first MOS tube Q71 is connected to one end of the twelfth resistor R795; one end of the first capacitor C1071 is connected to the inverting input end of the first operational amplifier U147A, and the other end is connected to the non-inverting input end of the first operational amplifier U147A; the second end 2 of the electrode interface J6 is connected to the output end of the equalization circuit 60, and the electrode interface J6 is connected to an electrode for discharging to the human body.

[0059] In one embodiment, Figure 5 As shown, the human body voltage detection circuit 30 includes: a second operational amplifier U150A and a second resistor R91; the non-inverting input terminal of the second operational amplifier U150A is connected to the drain of the first MOS tube Q71, the inverting input terminal of the second operational amplifier U150A is connected to the output terminal of the second operational amplifier U150A, the output terminal of the second operational amplifier U150A is connected to one end of the second resistor R91, and the other end of the second resistor R91 is connected to the input terminal of the main control circuit 10.

[0060] In one embodiment, Figure 5 As shown, the human body voltage detection circuit 30 also includes: a third resistor R92 and a second capacitor C100; one end of the third resistor R92 is connected to the drain of the first MOS tube Q71, and the other end of the third resistor R92 is grounded; the second capacitor C100 is connected in parallel with the third resistor R92.

[0061] In one embodiment, Figure 2 As shown, the first driving circuit 40 includes: a first driving chip U1, a fourth resistor R782, a fifth resistor R783, a third capacitor C1067 and a fourth capacitor C1068; the first input terminal IN and the second input terminal SD of the first driving chip U1 are both connected to the output terminal of the main control circuit 10, and the first output terminal HO and the second output terminal LO of the first driving chip U1 are both connected to the input terminal of the first voltage equalization circuit 601; one end of the fourth resistor R782 is connected to the first input terminal IN of the first driving chip U1, and the other end is grounded; the third capacitor C1067 is connected in parallel with the fourth resistor R782; the fifth resistor R783 is connected to the second input terminal SD of the first driving chip U1, and the other end is grounded; the fourth capacitor C1068 is connected in parallel with the fifth resistor R783.

[0062] In one embodiment, Figure 3As shown, the second driving circuit 50 includes: a second driving chip U2, a sixth resistor R802, a seventh resistor R803, a fifth capacitor C1075 and a sixth capacitor C1076; wherein the first input terminal IN and the second input terminal SD of the second driving chip U2 are both connected to the output terminal of the main control circuit 10, and the first output terminal HO and the second output terminal LO of the second driving chip U2 are both connected to the input terminal of the second voltage equalization circuit 602; one end of the sixth resistor R802 is connected to the first input terminal IN of the second driving chip U2, and the other end is grounded; the fifth capacitor C1075 is connected in parallel with the sixth resistor R802; one end of the seventh resistor R803 is connected to the second input terminal SD of the second driving chip U2, and the other end is grounded; the sixth capacitor C1076 is connected in parallel with the seventh resistor R803.

[0063] In one embodiment, Figure 4 As shown, the first voltage equalization circuit 601 includes: a second MOS transistor Q67, a seventh capacitor C1080 and an eighth resistor R809, a third MOS transistor Q69, an eighth capacitor C1081 and a ninth resistor R810; wherein the gate of the second MOS transistor Q67 is connected to the first output terminal HO of the first driving chip U1, the source of the second MOS transistor Q67 is connected to the input terminal of the current stimulation circuit 20; the drain of the second MOS transistor Q67 is connected to an external power supply; one end of the seventh capacitor C1080 is connected to the external power supply, and the other end is connected to the external power supply. One end is connected to the drain of the third MOS tube Q69, and the eighth resistor R809 is connected in parallel with the seventh capacitor C1080; the gate of the third MOS tube Q69 is connected to the second output terminal LO of the first driving chip U1, and the source of the third MOS tube Q69 is connected to the input terminal of the current stimulation circuit 20; one end of the eighth capacitor C1081 is connected to the drain of the third MOS tube Q69, and the other end is connected to the input terminal of the second voltage balancing circuit 602; the ninth resistor R810 is connected in parallel with the eighth capacitor C1081.

[0064] In one embodiment, Figure 4As shown, the second voltage equalization circuit 602 includes: a fourth MOS tube Q68, a ninth capacitor R1082, a tenth resistor R811, a fifth MOS tube Q70, a tenth capacitor R1083 and an eleventh resistor R812; wherein the gate of the fourth MOS tube Q68 is connected to the first output terminal HO of the second driving chip U2, the source of the fourth MOS tube Q68 is connected to the input terminal of the current stimulation circuit 20; one end of the ninth capacitor R1082 is connected to the drain of the fourth MOS tube Q68 The eleventh resistor R812 is connected in parallel with the ninth capacitor R1082; the gate of the fifth MOS tube Q70 is connected to the second output terminal LO of the second driving chip U2, and the source of the fifth MOS tube Q70 is connected to the input terminal of the current stimulation circuit 20; one end of the tenth capacitor R1083 is connected to the drain of the fifth MOS tube Q70 and the other end is grounded; the eleventh resistor R812 is connected in parallel with the tenth capacitor R1083.

[0065] The present application outputs a stimulation signal to the current stimulation circuit through the main control circuit; the current stimulation circuit receives the stimulation signal and outputs a stimulation current to the human body to electrically stimulate the human body; the human body voltage detection circuit detects the human body voltage of the human body and outputs the human body voltage to the main control circuit; the second output end of the main control circuit is connected to the input end of the first drive circuit, and the main control circuit also receives the human body voltage and outputs a control signal to the first drive circuit or the second drive circuit; the first drive circuit receives the control signal and outputs the first drive signal to the voltage equalization circuit; the second drive circuit receives the control signal and outputs the second drive signal to the equalization circuit; the equalization circuit receives the first drive signal and outputs the first working voltage to the current stimulation circuit; or receives the second drive signal and outputs the second working voltage to the current stimulation circuit; the current stimulation circuit also receives the first working voltage and the second working voltage, and outputs the corresponding stimulation current. The present application detects the human body voltage of the human body in real time through the human body voltage detection circuit and sends it to the main control circuit, so that the main control circuit accurately outputs a control signal to the first drive circuit or the second drive circuit, ensuring that the stimulation current applied to the patient by the current stimulation circuit changes with the change of the human body voltage, and will not be too large or too small, to avoid ineffective treatment.

[0066] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. An electrotherapy device, It is characterized in that include: A main control circuit, wherein a first output terminal is connected to an input terminal of a current stimulation circuit, and is used to output a stimulation signal to the current stimulation circuit; The output end of the current stimulation circuit is used to contact the human body, and after receiving the stimulation signal, outputs a stimulation current to the human body to electrically stimulate the human body; A human body voltage detection circuit, wherein the output end is connected to the input end of the main control circuit, the input end is used to contact the human body, detect the human body voltage of the human body, and output the human body voltage to the main control circuit; the second output end of the main control circuit is connected to the input end of the first drive circuit, the third output end of the main control circuit is connected to the input end of the second drive circuit, and is also used to receive the human body voltage and output a control signal to the first drive circuit or the second drive circuit; The first driving circuit, whose output end is connected to the output end of the voltage equalization circuit, is used to receive the control signal and output a first driving signal to the voltage equalization circuit; The second driving circuit has an output end connected to the output end of the voltage balancing circuit, and is used to receive the control signal and output a second driving signal to the voltage balancing circuit; The output end of the voltage balancing circuit is connected to the input end of the current stimulation circuit, and is used to receive the first driving signal and output the first working voltage to the current stimulation circuit; or receive the second driving signal and output the second working voltage to the current stimulation circuit; the current stimulation circuit is also used to receive the first working voltage or the second working voltage, and output the corresponding stimulation current.

2. The electrotherapy device according to claim 1, It is characterized in that The voltage equalization circuit comprises: a first voltage equalization circuit, whose input end is connected to the output end of the first driving circuit, and is used to receive the first driving signal and output the first working voltage to the current stimulation circuit; The second voltage equalization circuit has an input end connected to the output end of the second driving circuit, and is used to receive the second driving signal and output the second operating voltage to the current stimulation circuit.

3. The electrotherapy device according to claim 1, It is characterized in that The main control circuit comprises: a main control chip; The input end of the main control chip is connected to the output end of the human body voltage detection circuit, the first output end of the main control chip is connected to the input end of the current stimulation circuit, the second output end of the main control chip is connected to the input end of the first drive circuit, and the third output end is connected to the input end of the second drive circuit.

4. The electrotherapy device according to claim 1, It is characterized in that The current stimulation circuit comprises: a first operational amplifier, a first MOS tube, a first capacitor, a first resistor, a twelfth resistor and an electrode interface; The non-inverting input terminal of the first operational amplifier is connected to the output terminal of the main control circuit, the inverting input terminal of the first operational amplifier is connected to one end of the twelfth resistor, the other end of the twelfth resistor is grounded, the output terminal of the first operational amplifier is connected to one end of the first resistor, and the other end of the first resistor is connected to the gate of the first MOS tube; The drain of the first MOS tube is connected to the first end of the electrode interface, and the source of the first MOS tube is connected to one end of the twelfth resistor; One end of the first capacitor is connected to the inverting input terminal of the first operational amplifier, and the other end is connected to the non-inverting input terminal of the first operational amplifier; The second end of the electrode interface is connected to the output end of the equalization circuit, and the electrode interface is connected to an electrode for discharging to a human body.

5. The electrotherapy device according to claim 4, It is characterized in that The human body voltage detection circuit comprises: a second operational amplifier and a second resistor; The non-inverting input terminal of the second operational amplifier is connected to the drain of the first MOS tube, the inverting input terminal of the second operational amplifier is connected to the output terminal of the second operational amplifier, the output terminal of the second operational amplifier is connected to one end of the second resistor, and the other end of the second resistor is connected to the input terminal of the main control circuit.

6. The electrotherapy device according to claim 5, It is characterized in that The human body voltage detection circuit also includes: a third resistor and a second capacitor; One end of the third resistor is connected to the drain of the first MOS tube, and the other end of the third resistor is grounded; The second capacitor is connected in parallel with the third resistor.

7. The electrotherapy device according to claim 2, It is characterized in that The first driving circuit comprises: a first driving chip, a fourth resistor, a fifth resistor, a third capacitor and a fourth capacitor; The first input terminal and the second input terminal of the first driver chip are both connected to the output terminal of the main control circuit, and the first output terminal and the second output terminal of the first driver chip are both connected to the input terminal of the first voltage equalization circuit; One end of the fourth resistor is connected to the first input end of the first driving chip, and the other end is grounded; the third capacitor is connected in parallel with the fourth resistor; The fifth resistor is connected to the second input terminal of the first driving chip, and the other terminal is grounded; the fourth capacitor is connected in parallel with the fifth resistor.

8. The electrotherapy device according to claim 7, It is characterized in that The second driving circuit comprises: a second driving chip, a sixth resistor, a seventh resistor, a fifth capacitor and a sixth capacitor; The first input terminal and the second input terminal of the second driving chip are both connected to the output terminal of the main control circuit, and the first output terminal and the second output terminal of the second driving chip are both connected to the input terminal of the second voltage equalization circuit; One end of the sixth resistor is connected to the first input end of the second driving chip, and the other end is grounded; the fifth capacitor is connected in parallel with the sixth resistor; One end of the seventh resistor is connected to the second input end of the second driving chip, and the other end is grounded; the sixth capacitor is connected in parallel with the seventh resistor.

9. The electrotherapy device according to claim 8, It is characterized in that The first voltage equalization circuit includes: a second MOS tube, a seventh capacitor and an eighth resistor; A third MOS tube, an eighth capacitor and a ninth resistor; The gate of the second MOS tube is connected to the first output terminal of the first driving chip, the source of the second MOS tube is connected to the input terminal of the current stimulation circuit; the drain of the second MOS tube is connected to the external power supply; One end of the seventh capacitor is connected to the external power supply, and the other end is connected to the drain of the third MOS tube, and the eighth resistor is connected in parallel with the seventh capacitor; The gate of the third MOS tube is connected to the second output terminal of the first driving chip, and the source of the third MOS tube is connected to the input terminal of the current stimulation circuit; One end of the eighth capacitor is connected to the drain of the third MOS tube, and the other end is connected to the input end of the second voltage balancing circuit; the ninth resistor is connected in parallel with the eighth capacitor.

10. The electrotherapy device according to claim 9, It is characterized in that The second voltage equalization circuit includes: a fourth MOS tube, a ninth capacitor and a tenth resistor; a fifth MOS tube, a tenth capacitor and an eleventh resistor; The gate of the fourth MOS tube is connected to the first output terminal of the second driving chip, and the source of the fourth MOS tube is connected to the input terminal of the current stimulation circuit; One end of the ninth capacitor is connected to the drain of the fourth MOS tube, and the other end is connected to the drain of the fifth MOS tube; the eleventh resistor is connected in parallel with the ninth capacitor; The gate of the fifth MOS tube is connected to the second output terminal of the second driving chip, and the source of the fifth MOS tube is connected to the input terminal of the current stimulation circuit; One end of the tenth capacitor is connected to the drain of the fifth MOS tube and the other end is grounded; the eleventh resistor is connected in parallel with the tenth capacitor.

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