Devices and circuits for electrical stimulation and electric field therapy

Abstract

The present invention relates to the field of medical instrument technology, and specifically to equipment and circuits for electrical stimulation and electric field therapy. The circuit includes a DC unit for providing a reference voltage to an AC / DC unit; the AC / DC unit is connected to a controller and an electrode, respectively; a feedback unit is connected to the AC / DC unit and the controller, respectively, for feeding back an electrical signal from the AC / DC unit to the controller; the controller is configured to adjust the reference voltage based on the electrical signal when the circuit operates in a first mode for electrical stimulation; and is further configured to adjust the drive signal of the AC / DC unit based on the electrical signal when the circuit operates in a second mode for electric field therapy. The objects adjusted vary depending on the operating mode of the circuit for electrical stimulation and electric field therapy, ensuring high-precision current control, thereby enabling applications of head and muscle electrical stimulation and electric field therapy with high current control accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to equipment and circuits thereof for electrical stimulation and electric field therapy. Background Art

[0002] Electrical stimulation and electric field therapy devices use biocompatible materials to encapsulate the electrical stimulation and electric field therapy circuits and implantable batteries. Through wireless charging or power supply, and equipped with appropriate electrodes, they can perform implantable electrical stimulation or electric field therapy. They are also encapsulated with general medical materials and equipped with appropriate electrodes as external portable wearable devices, which can be used for muscle rehabilitation training, electric field therapy for tumors, and other related medical purposes. Existing devices generally use wired neuromuscular stimulation or various electric field therapy devices, which interfere with normal activities. This has led to the development of wireless portable therapy devices, but the impact of portability on circuit design has resulted in low current accuracy. Summary of the Invention

[0003] In view of this, an embodiment of the present invention provides a device for electrical stimulation and electric field therapy and a circuit thereof to solve the problem of low current accuracy.

[0004] According to a first aspect, an embodiment of the present invention provides a circuit for electrical stimulation and electric field therapy, comprising:

[0005] A DC unit, used to provide a reference voltage to the AC / DC unit;

[0006] AC and DC units, connected to the controller and the electrodes respectively;

[0007] a feedback unit, connected to the AC / DC unit and the controller, respectively, and configured to feed back the electrical signal of the AC / DC unit to the controller;

[0008] The controller is used to adjust the magnitude of the reference voltage based on the electrical signal when the circuit operates in a first mode for electrical stimulation; and is also used to adjust the drive signal of the AC / DC unit based on the electrical signal when the circuit operates in a second mode for electric field therapy.

[0009] The circuit for electrical stimulation and electric field therapy provided by the embodiment of the present invention adjusts different objects according to the different working modes of the circuit, that is, the size of the reference voltage and the drive signal are adjusted respectively for different working modes, so that the controller can adjust the control strategy accordingly according to the working mode. Among them, the adjustment of the reference voltage is applicable to the low-current working mode, while the adjustment of the drive signal is applicable to the high-current working mode, ensuring high-precision current control, thereby realizing high-current control precision head and muscle electrical stimulation and electric field therapy applications, and expanding the application range of the circuit.

[0010] In combination with the first aspect, in a first implementation of the first aspect, the feedback unit includes:

[0011] A first feedback module comprises an electrical signal branch and an operational amplifier branch, wherein the electrical signal branch is connected to the AC / DC unit, and the operational amplifier branch is connected to the electrical signal branch and the controller respectively;

[0012] The second feedback module has a current detection component, which is used to measure the electrical signal and feed the electrical signal back to the controller.

[0013] The circuit for electrical stimulation and electric field therapy provided by an embodiment of the present invention adopts two different feedback modules corresponding to different operating modes. For the low current mode, an operational amplifier branch is used for comparison to adjust the size of the reference voltage, thereby improving the adjustment accuracy of the reference voltage and thus improving the control accuracy of the circuit.

[0014] In combination with the first embodiment of the first aspect, in the second embodiment of the first aspect, the electrical signal branch includes:

[0015] a first controllable switch connected to the AC / DC unit and the operational amplifier branch respectively;

[0016] A resistor, wherein a first end is connected to the first controllable switch, a second end of the resistor is grounded, and the first end is connected to the operational amplifier branch.

[0017] The circuit for electrical stimulation and electric field therapy provided by the embodiment of the present invention realizes feedback of electric signals in the form of a first controllable switch and a resistor, simplifies the circuit structure, and thus reduces the volume of the circuit.

[0018] In combination with the second implementation of the first aspect, in the third implementation of the first aspect, the first feedback module further includes:

[0019] A second controllable switch is connected in parallel with the electrical signal branch, and the controller is used to control the action of the second controllable switch based on the working mode of the circuit.

[0020] The circuit for electrical stimulation and electric field therapy provided by the embodiment of the present invention controls the working state of the electrical signal branch through the second supply switch, so that the AC / DC unit can be grounded normally.

[0021] In combination with the first aspect, in a fourth implementation of the first aspect, the DC unit includes:

[0022] Power module;

[0023] A voltage adjustment module, wherein the input end of the voltage adjustment module is connected to the power module; the output end of the voltage adjustment module is connected to the AC / DC unit for providing the reference voltage; and the control end of the voltage adjustment module is connected to the controller.

[0024] The circuit for electrical stimulation and electric field therapy provided by the embodiment of the present invention adjusts the reference voltage through the voltage adjustment module, thereby simplifying the adjustment method of the reference voltage.

[0025] In combination with the first aspect, in a fifth implementation of the first aspect, the AC / DC unit includes:

[0026] a driving module connected to a first terminal and a second terminal of the controller, wherein the first terminal corresponds to the first mode and the second terminal corresponds to the second mode;

[0027] An isolation module, used to connect the driving module with the corresponding controllable module;

[0028] The controllable module is connected to the DC unit, the electrode and the feedback unit respectively.

[0029] In combination with the fifth embodiment of the first aspect, in the sixth embodiment of the first aspect, the isolation module is a photoelectric isolation module.

[0030] According to a second aspect, an embodiment of the present invention further provides an electrical stimulation and electric field therapy device, comprising:

[0031] Equipment body;

[0032] The circuit for electrical stimulation and electric field therapy according to the first aspect of the present invention, or any embodiment of the first aspect, wherein the circuit is disposed within the device body;

[0033] The electrodes are connected to the AC and DC units of the circuit for electrical stimulation and electric field therapy.

[0034] The electrical stimulation and electric field therapy device provided in the embodiment of the present invention adjusts different objects according to different circuit working modes, that is, the size of the reference voltage and the driving signal are adjusted respectively for different working modes, so that the controller can adjust the control strategy accordingly according to the working mode. Among them, the adjustment of the reference voltage is applicable to the low current working mode, and the adjustment of the driving signal is applicable to the high current working mode, which expands the application scenarios of the electrical stimulation and electric field therapy device.

[0035] In conjunction with the second aspect, in a first embodiment of the second aspect, the electrical stimulation and electric field therapy device further comprises:

[0036] A setting unit, together with the controller, is used to determine the working mode of the circuit for electrical stimulation and electric field therapy.

[0037] The electrical stimulation and electric field therapy device provided in the embodiment of the present invention facilitates the user to set the working mode of the electrical stimulation and electric field therapy device by providing a setting unit without the need for other devices.

[0038] In combination with the first embodiment of the second aspect, in the second embodiment of the second aspect, the setting unit is a wireless communication device, which is wirelessly connected to the controller.

[0039] The electrical stimulation and electric field therapy device provided in the embodiment of the present invention sets the working mode through wireless communication, which is simple to set and can achieve remote control. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1 is a structural block diagram of a circuit for electrical stimulation and electric field therapy according to an embodiment of the present invention;

[0042] Figure 2 is a structural block diagram of a circuit for electrical stimulation and electric field therapy according to an embodiment of the present invention;

[0043] Figure 3 is a block diagram of an electrical stimulation and electric field therapy device according to an embodiment of the present invention;

[0044] Figure 4 is a flow chart of a method for controlling an electrical stimulation and electric field therapy device according to an embodiment of the present invention;

[0045] Figure 5 is a flow chart of a method for controlling an electrical stimulation and electric field therapy device according to an embodiment of the present invention;

[0046] Figure 6 is a flow chart of a method for controlling an electrical stimulation and electric field therapy device according to an embodiment of the present invention;

[0047] Figure 7 is a structural block diagram of a control device for an electrical stimulation and electric field therapy device according to an embodiment of the present invention;

[0048] Figure 8FIG. 4 is a hardware structure diagram of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0049] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0050] The embodiment of the present invention provides a circuit for electrical stimulation and electric field therapy, such as Figure 1 As shown, the circuit includes a DC unit 61, an AC / DC unit 63, a feedback unit 64, and a controller 62. The DC unit 61 is connected to the AC / DC unit 63 and is used to provide a reference voltage to the AC / DC unit 63; the feedback unit 64 is connected to the AC / DC unit 63 and the controller 62 respectively, and is used to feed back the electrical signal of the AC / DC unit 63 to the controller 62; the controller 62 is used to adjust the reference voltage and drive signal of the AC / DC unit based on the circuit's operating mode and the electrical signal.

[0051] Specifically, DC unit 61 not only provides a reference voltage for AC / DC unit 63 but also provides DC voltage for other power-consuming circuits within the circuit. DC unit 61 is a DC-DC converter, configured to convert the input battery voltage into at least one level of DC voltage. This converted DC voltage is then used to provide the reference voltage and the required voltages for other power-consuming circuits. For example, the circuit includes a rechargeable power supply, which is connected to the DC-DC converter to provide DC power to the converter.

[0052] The AC / DC unit 63 is a DC / AC circuit that can employ an inverter circuit design, such as a full-bridge circuit or a half-bridge circuit. Its specific structure is not limited herein. The AC / DC unit 63 is connected to a controller and electrodes. The controller provides a drive signal for the AC / DC unit 63 and, when the circuit operates in the first mode, adjusts the reference voltage setting value of the AC / DC unit 63.

[0053] It should be noted that the first mode for electrical stimulation is a low current mode, and the second mode for electric field therapy is a high current mode. Specifically, various electrical stimulation functions are built into the controller of the circuit, and each electrical stimulation function corresponds to a corresponding mode. For example, function A and function B correspond to the first mode, and function C corresponds to the second mode. Optionally, in the first mode and / or the second mode, it is also divided into the first gear, the second gear, and so on according to different intensities. The number of gears divided by each mode and the relationship between the gears can be set according to actual needs, and no limitation is made here. The ranges of stimulation currents provided by the first mode and the second mode are different. The current range of the stimulation current provided by the first mode is smaller, so it can also be called a low current mode; the current range of the stimulation current provided by the second mode is larger, so it can also be called a high current mode.

[0054] In low-current mode, due to the low stimulation current, the controller adjusts the first comparison reference value and, in conjunction with it, the reference voltage of the AC / DC unit, ensuring that the stimulation current output by the AC / DC unit meets the user's set requirements. In high-current mode, the drive signal of the AC / DC unit is adjusted based on the magnitude of the electrical signal, achieving closed-loop control of the amplitude of the pulse current flowing through the electrode.

[0055] Feedback unit 64 is used to feed back the electrical signal from AC / DC unit 63 to controller 62. This electrical signal can be, for example, the stimulation current of AC / DC unit 63. For example, a current detector can be placed near the electrodes, and its detection results fed back to controller 62. Alternatively, different feedback units 64 can be provided for different operating modes. Specifically, in the first mode, stimulation current comparison can be performed using an operational amplifier branch; in the second mode, current detection can be used to collect data, and the collected results can be sent to controller 62 for comparison. The specific circuit structure of feedback unit 64 will be described in detail below.

[0056] The controller 62 can be any device with data processing function, such as a single chip microcomputer, FPGA, etc. The selection of the specific model of the controller 62 is based on actual needs and is not limited here.

[0057] The circuit for electrical stimulation and electric field therapy provided in this embodiment adjusts different objects according to the different working modes of the circuit, that is, the size of the reference voltage and the driving signal are adjusted respectively for different working modes, so that the controller can adjust the control strategy accordingly according to the working mode. Among them, the adjustment of the reference voltage is applicable to the low current working mode, and the adjustment of the driving signal is applicable to the high current working mode, which expands the application scenarios of the circuit.

[0058] In an optional implementation of this embodiment, the feedback unit includes a first feedback module and a second feedback module. The first feedback module corresponds to the first mode, and the second feedback module corresponds to the second mode. Upon determining the current operating mode of the circuit, the controller 62 controls the corresponding pins to operate and receives electrical signals fed back by the first feedback module or the second feedback module corresponding to the feedback unit.

[0059] For example, a first feedback module is connected to a first pin of controller 62, and a second feedback module is connected to a second pin of controller 62. When controller 62 determines that the circuit is currently operating in the first mode, controller 62 controls the first pin to operate and the second pin to be inoperative, thereby receiving the electrical signal fed back by the first feedback module. At this point, the second feedback module may also collect electrical signals, but controller 62 does not use the results collected by the second feedback module; alternatively, controller 62 may directly control the second feedback module to be inoperative, leaving only the first feedback module inoperative.

[0060] When the controller 62 determines that the circuit is currently operating in the second mode, it activates the second pin and deactivates the first pin, receiving the electrical signal fed back by the second feedback module. At this point, the first feedback module may also collect electrical signals, but the controller 62 does not use the results collected by the first feedback module. Alternatively, the controller 62 directly deactivates the first feedback module, leaving only the second feedback module active.

[0061] Specifically, the first feedback module has an electric signal branch and an operational amplifier branch, the electric signal branch is connected to the AC / DC unit, and the operational amplifier branch is connected to the electric signal branch and the controller respectively. Figure 2 As shown, the electrical signal branch 97 is used to transmit the electrical signal of the AC / DC unit to the operational amplifier branch 90. The electrical signal branch 97 collects the electrical signal by using a resistor divider, or other methods.

[0062] The operational amplifier branch 90 is used to connect the electrical signal branch 97 and the controller 22. The operational amplifier branch 90 is used to compare the electrical signal collected by the electrical signal branch 97 with the standard value of the electrical signal preset in the controller 22 based on the current working mode to achieve constant current control. The actual current in the circuit is sampled through the resistor 19, and after isolation 20, voltage stabilization 25 and filtering 33, it is fed back to the controller 22. The controller 22 adjusts the reference voltage of the AC / DC unit based on the actual current sampling feedback result. In the first mode, the drive signal output by the controller 22 does not change with the change of the electrical signal, and it outputs the drive signal according to the setting parameters of the first mode. That is, the current amplitude of the basic pulse is determined by the positive and negative input terminals of the operational amplifier 21, and the positive pulse and negative pulse duration of the basic pulse are determined by the controller 22 according to the setting parameters of the first mode.

[0063] Furthermore, if Figure 2 The circuit shown in the figure can not only provide a basic pulse waveform, but also realize low-frequency modulation of the basic waveform to realize various waveform combinations. The basic frequency of the basic waveform can be an intermediate frequency or a high frequency. By performing low-frequency modulation on the intermediate frequency or high frequency waveform, a local amplification of the intermediate frequency or high frequency waveform can be achieved. For example, in Figure 2 In the illustrated circuit, in the first mode, the amplitude of the output pulse waveform can be adjusted by adjusting the magnitude of the first comparison reference value output by the DA terminal of controller 22; the duration of the output pulse waveform can be adjusted by adjusting the duration of the output pulse of controller 22. In the second mode, the amplitude of the output pulse waveform can be adjusted by adjusting the duty cycle of the drive pulse based on the result of the current closed-loop operation 33, and the duration of the output pulse waveform can be adjusted by adjusting the duration of the output pulse of controller 22. Low-frequency modulation of the above basic waveforms can achieve low-frequency modulation of various basic waveforms, such as square wave AC pulses.

[0064] The second feedback module has a current detection component for measuring the electrical signal of the AC / DC unit and feeding the electrical signal back to the controller. Figure 2 As shown, the AC / DC unit is connected to two electrodes, electrode 1 and electrode 2. A current detection element can be set near these two electrodes to detect the stimulation current. The current detection element can be a Hall element, a current transformer, etc. There is no limitation on it here, and it can be selected according to actual needs. Figure 2 As shown, the current detection element in the second feedback module collects the electrical signal of the AC / DC unit, and then feeds it back to the controller after isolation 30 and rectification and filtering 32. The controller performs closed-loop operation on the electrical signal internally and outputs two drive signals with dead zones.

[0065] The controller has a built-in electrical signal standard value corresponding to the setting parameters of the second mode. The second feedback module feeds the collected electrical signal back to the controller. The controller compares the electrical signal with the electrical signal standard value, performs a closed-loop calculation based on the comparison result, and adjusts the drive signal based on the result. Specifically, in the second mode, the reference voltage of the AC / DC unit remains unchanged, which is determined based on the setting parameters of the second mode. The controller also controls and adjusts the drive signal based on the closed-loop calculation results. It performs a current closed-loop calculation based on the electrical signal collected by the second feedback unit and the current signal standard value determined by the setting parameters of the second mode, and adjusts the drive signal based on the calculation results.

[0066] Two different feedback modules are used to correspond to different working modes. For the low current mode, an operational amplifier branch is used to perform pulse constant current control, and then a reference voltage that matches the first comparison reference value, that is, the basic pulse current amplitude, is determined. The size of the reference voltage is adjusted to improve the matching degree between the reference voltage and the stimulation current, thereby improving the overall efficiency of the electrical stimulation and electric field therapy device.

[0067] As an optional implementation of this embodiment, Figure 2 As shown, electrical signal branch 97 includes a first controllable switch 18 and a resistor 19. The first controllable switch is connected to the AC / DC unit and the operational amplifier branch, respectively. The resistor has a first end connected to the first controllable switch, a second end grounded, and a first end connected to the operational amplifier branch. The first controllable switch and the resistor enable selection of the first operating mode and feedback of the electrical signal. This allows for high current control accuracy at low currents and simplifies the circuit structure.

[0068] When the circuit operates in the first mode, Figure 2 As shown, the controller 22 controls the first controllable switch 18 to be turned on, samples the voltage through the resistor 19, and feeds the electrical signal of the resistor back to the operational amplifier branch 90. After the operational amplifier branch 90 isolates and processes it, it compares the processed electrical signal with the standard value of the electrical signal output by the DA pin of the controller 22 to achieve constant current control of the basic pulse. The voltage sampling result of the resistor 19 is isolated 20, stabilized 25 and filtered 23, and then fed back to the AD pin of the controller 22. After receiving the actual current sampling result, the controller 22 adjusts the size of the reference voltage to correspond to it based on this result to ensure that the expected actual current value can be output. During the operation of the device, it makes a judgment in real time based on the actual current sampling result. If the current output capacity is insufficient, the reference voltage value is increased; if the reference voltage is greater than the corresponding actual current value requirement, the reference voltage is reduced.

[0069] like Figure 2As shown, operational amplifier branch 90 includes an operational amplifier 21, an isolation 20, a voltage regulator 25, and a filter 23. Specifically, the positive terminal of operational amplifier 21 is connected to the DA pin of controller 22, which is used to output a first comparison reference value. The negative terminal of operational amplifier 21 is connected to current sampling 19 via isolation 20 to perform constant current control on the basic pulse. When the first controllable switch 18 is on and the switch 07 is off, the circuit operates in a low-current mode. When the first controllable switch 18 is off and the switch 07 is on, the circuit operates in a high-current mode.

[0070] In some optional implementations of this embodiment, the first feedback module further includes a second controllable switch connected in parallel with the electrical signal branch. The controller is configured to control the operation of the second controllable switch based on the operating mode of the circuit. The operating state of the electrical signal branch is controlled by the second controllable switch to ensure proper grounding of the AC / DC unit.

[0071] like Figure 2 As shown, when the circuit is in the first mode, the controller 22 controls the second controllable switch 07 to be off, and the electrical signal branch operates to collect the electrical signal of the AC / DC unit and feed it back to the operational amplifier branch 90. When the circuit is in the second mode, the controller 22 controls the second controllable switch 07 to be on, and the electrical signal branch is short-circuited. At this time, the AC / DC unit is grounded 26.

[0072] In some optional implementations of this embodiment, the DC unit includes a power module and a voltage adjustment module. The voltage adjustment module has an input connected to the power module and an output connected to the AC / DC unit, providing a reference voltage. The voltage adjustment module's control terminal is connected to a controller. Adjusting the reference voltage via the voltage adjustment module simplifies the reference voltage adjustment method.

[0073] The DC unit operates as follows: The power module outputs at least one level of DC voltage, which is used to power other circuits within the circuit. One of the DC unit's output voltages is connected to a voltage adjustment module, which adjusts its output voltage under the control of a controller. The output voltage of this voltage adjustment module serves as the reference voltage for the AC / DC unit. The voltage adjustment module can be a variable resistor, a digital potentiometer, or other devices.

[0074] In some optional implementations of this embodiment, the AC / DC unit includes a driver module, an isolation module, and a controllable module. The driver module is connected to a first terminal and a second terminal of the controller, respectively. The first terminal corresponds to the first mode, and the second terminal corresponds to the second mode. Of course, the first terminal and the second terminal can be the same or different, depending on actual needs.

[0075] The isolation module connects the driver module to the corresponding controllable module, isolating the two modules. This isolation module can employ optoelectronic isolation or other isolation methods, which are not limited herein. Furthermore, if the 1VB voltage is low, the isolation module is not required.

[0076] The controllable module is respectively connected to the DC unit, electrodes and feedback unit, wherein the DC unit is used to provide a reference voltage to the controllable module; the electrodes are respectively connected to the target object for stimulating the target object; the feedback unit is used to feed back the electrical signal of the controllable module to the controller.

[0077] As mentioned above, the AC / DC unit can be a full-bridge circuit, a half-bridge circuit, etc. Taking the full-bridge circuit as an example, Figure 2 As shown, the driving module includes a left driver 27 and a right driver 28. The left driver 27 and the right driver 28 each include two drivers, each driver corresponding to an isolation. Figure 2 The AC / DC unit includes not only a driving module but also a controllable unit 29 , which includes switch tubes 1 to 4 and two electrodes.

[0078] like Figure 2 As shown, the voltage of the DC unit is determined by the target load and pulse intensity. To ensure sufficient current is applied to the target, high-current applications may require a boost circuit with a maximum voltage of nearly 100 volts. A boost circuit is a DC boost circuit typically composed of switching devices, diodes, inductors, and capacitors.

[0079] The AC / DC unit adopts full-bridge circuit design to realize output of bipolar waveform with complete positive and negative symmetry. Figure 2 Electrodes 1 and 2 are shown as acting on a target object. When switches 2, 3, 4, and 5 are all off, no current enters the electrodes. When switches 2 and 3 are on and switches 4 and 5 are off, the current flowing through the human body load is from electrode 1 to electrode 2, i.e., 11 → 10. When switches 4 and 5 are on and switches 2 and 3 are off, the current flowing through the target object is from electrode 2 to electrode 1, i.e., 10 → 11. As a result, the current applied to the target object through the electrodes exhibits bipolarity. Switches 2 and 5, or 3 and 4, on the same bridge arm cannot be on simultaneously. A power-to-ground short-circuit protection circuit is designed. The AC / DC unit receives drive signals 6, 7, 8, and 9 from the controller, which, after passing through optocoupler isolations 12, 15, 13, and 14, respectively, drive switches 2, 5, 4, and 3. The drive signals have dead zones within the same bridge arm, determined by the switch characteristics. The drive design must also ensure the floating ground characteristics of the full-bridge circuit.

[0080] The present invention also provides an apparatus for electrical stimulation and electric field therapy, comprising an apparatus body, a circuit for electrical stimulation and electric field therapy, and electrodes. The circuit is disposed within the apparatus body. For details on its specific structure, please refer to the above description and will not be repeated here.

[0081] Electrical stimulation and electric field therapy devices can be either implantable or non-implantable. Depending on the specific application scenario, the corresponding device body can be selected. For implantable applications, the entire device can be placed inside the target object, for example, in the skull or in a similar position to a traditional neurostimulator. Unlike the charge balance of traditional implantable neurostimulators, truly implantable AC stimulation of various waveforms can provide a long-term implant platform for new therapy research. Equipped with suitable electrodes, various types of AC stimulation and electric field therapy can be performed. For non-implantable applications, such as Figure 3 As shown, the device includes two electrodes and the device body, namely, electrode 01, electrode 02, housing 03, and housing 04. Taking the human body as an example, electrodes 01 and 02 are attached to the human skin, housings 03 and 04 are connected to electrodes 01 and 02, respectively, and batteries and circuits are located inside housings 03 and 04. The batteries and circuits can be placed inside only one of housings 03 and 04, or evenly distributed within both, or one housing can contain the batteries and the other housing the circuits, connected by wire 05.

[0082] The electrical stimulation and electric field therapy device provided in this embodiment adjusts different objects according to different circuit working modes, that is, the size of the reference voltage and the driving signal are adjusted respectively for different working modes, so that the controller can adjust the control strategy accordingly for the working mode. Among them, the adjustment of the reference voltage is applicable to the low current working mode, while the adjustment of the driving signal is applicable to the high current working mode. Within the full current range, the current control accuracy is relatively high, which expands the application scenarios of the electrical stimulation and electric field therapy device.

[0083] In some optional implementations of this embodiment, an interactive device may be provided on the device body of the electrical stimulation and electric field therapy device to facilitate the user to set the mode and parameters, wherein the interactive device may be a touch screen, or voice input, etc., and its specific implementation form is not displayed here, and can be set according to actual needs.

[0084] like Figure 3 As shown, a touch screen can be set on the surface of the shell 03. When the user operates the electrical stimulation and electric field therapy device, the user sets the working mode and mode parameters on the touch screen to trigger the electrical stimulation and electric field therapy device to start the corresponding work.

[0085] In other optional implementations of this embodiment, the electrical stimulation and electric field therapy device may also be provided with a setting unit, which is connected to the controller and is used to determine the operating mode of the circuit used for electrical stimulation and electric field therapy. The provision of the setting unit facilitates the user to set the operating mode of the electrical stimulation and electric field therapy device without the need for other equipment.

[0086] The setting unit can be the interactive device described above, or a built-in communication unit that communicates with an external device to set the working mode and mode parameters. For example, the setting unit is a wireless communication device that is wirelessly connected to the controller. Figure 3 As shown, the wireless communication device 06 is connected to the controller. The wireless communication device 06 can be a remote controller, or other mobile terminal, etc. The working mode is set by wireless communication, and the setting method is simple and remote control can be achieved.

[0087] like Figure 3 As shown, the operating mode and mode parameter settings of the electrical stimulation and electric field therapy device are set and adjusted by the wireless communication device 07 through wireless communication. Among them, the built-in battery of the electrical stimulation and electric field therapy device can be charged, and the structure is compact and portable.

[0088] The electrical stimulation and electric field therapy device can operate in two modes, namely the first mode (low current mode) and the second mode (high current mode). Figure 2 As shown, in the first mode, the controller determines the drive signal based on the mode parameters and then outputs the corresponding drive signal according to the control requirements. This drive signal controls the pulse duration and is not affected by the electrical signal from the AC / DC unit. Simultaneously, the controller adjusts the reference voltage of the AC / DC unit based on the electrical signal from the AC / DC unit to meet the control requirements.

[0089] In the second mode, after the controller determines the reference voltage of the AC / DC unit based on the mode parameters, the reference voltage remains unchanged during the subsequent control process. At the same time, the controller adjusts the driving signal of the AC / DC unit based on the electrical signal of the AC / DC unit to meet the control requirements. For example, Figure 2 As shown, the isolation 16 adopts transformer isolation, and the controller is designed to output high-frequency modulated pulses. After the full-bridge circuit is isolated by the drivers 27 and 28, the output is applied to the target object between the electrodes 11 and 10 after passing through the isolation 16 and the filter 17. The design of the filter circuit is related to the steady-state accuracy of the pulse current. In this mode, the reference voltage of the AC / DC unit does not need to be adjusted according to the parameter setting. The voltage setting matches the pulse current output intensity, which is more efficient. In the second mode, by sampling the feedback current, Figure 2The current is sent through isolation 30, rectification and filtering 32 to controller 22, where a closed-loop control algorithm is used to obtain an appropriate drive waveform 35. This waveform is then sent from port 99 to the left and right drivers 27 and 28 for real-time control to meet the needs of constant current control. Both modes can output various basic AC waveforms with high accuracy, as well as various waveform combinations after low-frequency modulation.

[0090] According to an embodiment of the present invention, an embodiment of a control method for an electrical stimulation and electric field therapy device is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0091] In this embodiment, a control method for an electrical stimulation and electric field therapy device is provided, which can be used in a controller of the electrical stimulation and electric field therapy device. Figure 4 FIG. 1 is a flow chart of a control method of an electrical stimulation and electric field therapy device according to an embodiment of the present invention. Figure 4 As shown, the process includes the following steps:

[0092] S11, obtaining the setting result of the current control parameters of the electrical stimulation and electric field therapy device.

[0093] The current control parameters include a current working mode and configuration parameters, and the current working mode includes a first mode for electrical stimulation or a second mode for electric field therapy.

[0094] The current operating modes include the first and second modes described above, namely, the low current mode and the high current mode. Configuration parameters are the parameters of each mode, such as pulse intensity, pulse duration, modulation parameters, and current range. Each operating mode has multiple intensities to choose from. Once a specific intensity is selected, the corresponding configuration parameters are also determined.

[0095] The current control parameters can be obtained through the interaction between the electrical stimulation and electric field therapy device and the user, or through remote communication between the electrical stimulation and electric field therapy device and an external device, etc. There is no limitation on the acquisition method here.

[0096] In some optional implementations of this embodiment, the above S11 may include:

[0097] (1) Obtain the mode selection results of the electrical stimulation and electric field therapy equipment to determine the current working mode.

[0098] (2) Obtain the setting results of the configuration parameters in the current working mode to determine the configuration parameters.

[0099] The modes of the electrical stimulation and electric field therapy device include, but are not limited to, muscle stimulation, transcranial stimulation, implant mode, or software update, each corresponding to an operating mode. Once the mode of the electrical stimulation and electric field therapy device is determined, the current operating mode of the electrical stimulation and electric field therapy device can be determined accordingly.

[0100] The electrical stimulation and electric field therapy device provides a parameter setting function. The configuration parameters can be determined by setting the configuration parameters on an external device or an interactive interface provided by the electrical stimulation and electric field therapy device.

[0101] S12, obtaining the electrical signal of the AC / DC unit fed back by the feedback unit.

[0102] The specific structure and connection method of the feedback unit and the AC / DC unit can be found in the detailed description of the circuit for electrical stimulation and electric field therapy above, which will not be repeated here.

[0103] Similarly, for different current working modes, the corresponding first feedback module or second feedback module is used to collect the electrical signal of the AC / DC unit, and the collected electrical signal is fed back to the electronic device, that is, the controller mentioned above.

[0104] S13, adjusting the reference voltage or driving signal of the AC / DC unit in real time based on the current working mode, configuration parameters and electrical signals.

[0105] As described above, when the electrical stimulation and electric field therapy device is currently operating in the first mode, the electronic device adjusts the reference voltage of the AC / DC unit in real time based on the configuration parameters and the electrical signal. When the electrical stimulation and electric field therapy device is currently operating in the second mode, the electronic device adjusts the drive signal of the AC / DC unit in real time based on the configuration parameters and the electrical signal. Both adjustments are designed to achieve the desired constant current pulse, and the pulse duration, i.e., the time between the positive and negative switching of the basic pulse, is determined by the operating mode.

[0106] Furthermore, in the first mode, the driving signal output by the electronic device does not change with the change of the electrical signal. It is the reference voltage that changes with the electrical signal. The change of the driving signal of the electronic device determines the duration of the positive and negative pulses; in the second mode, the driving signal output by the electronic device changes with the change of the electrical signal, and the reference voltage remains unchanged.

[0107] This step will be described in detail below. The control method of the electrical stimulation and electric field therapy device provided in this embodiment adopts different control strategies for different working modes, thereby improving the reliability of the control.

[0108] In some optional implementations of this embodiment, the control method may further include:

[0109] (1) Check whether the control parameters of the electrical stimulation and electric field therapy equipment are updated.

[0110] (2) When the control parameters are updated, the updated control parameters are determined as the current control parameters.

[0111] Control parameters can be updated during the electrical stimulation process. If the user wishes to adjust the operating mode or configure parameters, they can be updated. The electronic device detects in real time whether the control parameters have been updated. Upon detecting an update, it determines the updated control parameters as the current control parameters and promptly uses the updated control parameters to control the electrical stimulation and electric field therapy devices.

[0112] By detecting the update status of control parameters in real time and taking the latest control parameters as current control parameters, the accuracy of control is guaranteed.

[0113] In this embodiment, a control method for an electrical stimulation and electric field therapy device is provided, which can be used in the controller of the above-mentioned electrical stimulation and electric field therapy device. When the current working mode is the first mode, Figure 5 FIG. 1 is a flow chart of a control method of an electrical stimulation and electric field therapy device according to an embodiment of the present invention. Figure 5 As shown, the process includes the following steps:

[0114] S21, obtaining the setting result of the current control parameters of the electrical stimulation and electric field therapy device.

[0115] The current control parameters include a current working mode and configuration parameters, and the current working mode includes a first mode for electrical stimulation or a second mode for electric field therapy.

[0116] For details, please see Figure 4 S11 of the illustrated embodiment will not be described in detail here.

[0117] S22, obtaining the electrical signal fed back by the feedback unit.

[0118] For details, please see Figure 4 S12 of the illustrated embodiment will not be described in detail here.

[0119] S23 , adjusting the reference voltage or driving signal of the AC / DC unit based on the current working mode, configuration parameters, and electrical signals.

[0120] Specifically, the above S23 includes:

[0121] S231 : Determine an initial value of a reference voltage and a first comparison reference value based on configuration parameters.

[0122] The configuration parameters may include the range of the stimulation current, and the initial value of the reference voltage is determined based on the range of the stimulation current. For example, in the first mode, the electrical stimulation and electric field therapy device provides the user with the choice of soft start or direct start. If soft start is selected, the human body impedance is calculated using the minimum value of the stimulation current and the voltage applied at this time. Subsequently, the reference voltage is gradually increased based on the feedback electrical signal until the size of the reference voltage matches the stimulation current and the human body impedance; if direct start is selected, the reference voltage is calculated using the maximum value of the stimulation current and the human body impedance, and then the reference voltage is fine-tuned based on the feedback electrical signal.

[0123] The first comparison reference value is determined based on the configuration parameters, for example, the first comparison reference value is determined based on the type and intensity of the waveform.

[0124] S232: Output the first comparison reference value to the operational amplifier branch of the electrical stimulation and electric field therapy device.

[0125] The electronic device outputs the first comparison reference value to the operational amplifier branch of the electrical stimulation and electric field therapy device, and uses it as a comparison reference of the operational amplifier.

[0126] S233, receiving the comparison result of the operational amplifier branch.

[0127] The comparison result is determined based on the first comparison reference value and the electrical signal obtained by the feedback unit of the electrical stimulation and electric field therapy device based on the initial value of the reference voltage.

[0128] As described above, after setting the initial value of the reference voltage, the AC / DC unit, under the influence of the drive signal and the reference voltage, outputs a stimulation current, which flows through the electrodes and into the target object. The feedback unit collects the electrical signal from the AC / DC unit and outputs it to the operational amplifier branch. The operational amplifier branch compares the electrical signal with the first comparison reference value to achieve constant current control.

[0129] S234 , adjusting the initial value of the reference voltage based on the comparison result.

[0130] Based on the real-time sampling results of the stimulation current, the electronic device can determine the adjustment direction of the initial value of the reference voltage, thereby adjusting the initial value of the reference voltage. The real-time sampling results of the stimulation current, i.e., the electrical signal fed back by the feedback unit, are determined by the operational amplifier branch. The electronic device obtains the judgment result by receiving the comparison result outputted from the negative terminal of the operational amplifier. It should be noted that the adjustment of the reference voltage is not completed once, but is required throughout the entire electrical stimulation process.

[0131] S235 , outputting a driving signal corresponding to the configuration parameters to the AC / DC unit.

[0132] As described above, the drive signal output by the electronic device in the first mode does not change with changes in the electrical signal; instead, it is dependent on configuration parameters. For example, the configuration parameters determine the duration and polarity of the drive signal. The electronic device then outputs a drive signal with a waveform corresponding to the determined pulse width (i.e., duration) and polarity.

[0133] The control method of the electrical stimulation and electric field therapy device provided in this embodiment adopts the form of an operational amplifier branch to determine the comparison result, which can be applied to the low current working mode and improve the control accuracy in the low current mode.

[0134] In some optional implementations of this embodiment, the above S235 may include:

[0135] (1) Determine the timing of the current polarity of the drive signal based on the configuration parameters.

[0136] (2) Outputting the driving signal of the current polarity to the AC / DC unit within the timing time.

[0137] (3) When the timing time ends, the polarity of the driving signal is switched and the driving signal with switched polarity is output to the AC / DC unit.

[0138] As described above, the configuration parameters determine the duration and direction of the drive signal. The electronic device performs timing statistics while outputting the drive signal of the current polarity. During the timing period, the electronic device outputs the drive signal of the current polarity to the AC / DC unit. When the timing result reaches the timing time for the current polarity, the polarity of the drive signal is switched and the polarity-switched drive signal is output.

[0139] In a specific application example of this embodiment, the control method of the low current mode is as follows: first, the electrical stimulation and electric field therapy device selects a mode, selects and confirms implantation and non-implantation or software update, and then selects the stimulation site such as muscle. According to the selection result, the parameters are configured, and then according to the settings, the initial value of the reference voltage of the appropriate DC-AC circuit topology is selected. According to the required waveform type and intensity, the DA output of the controller matches the first comparison reference value that matches the set parameters. According to the feedback electrical signal, the output value of the reference voltage is designed to be adjusted to a suitable value to improve system efficiency and control system heat generation within a reasonable range. And when the pulse timing reaches the set value, the current polarity is switched. If the electrical stimulation and electric field therapy device updates the parameter settings through the remote control and continues to stimulate, the electrical stimulation and electric field therapy device resets the first comparison reference value of the level and the reference voltage, and the program loop is performed.

[0140] In this embodiment, a control method for an electrical stimulation and electric field therapy device is provided, which can be used in the controller of the above-mentioned electrical stimulation and electric field therapy device. When the current working mode is the second mode, Figure 6 FIG. 1 is a flow chart of a control method of an electrical stimulation and electric field therapy device according to an embodiment of the present invention. Figure 6 As shown, the process includes the following steps:

[0141] S31, obtaining the setting result of the current control parameters of the electrical stimulation and electric field therapy device.

[0142] The current control parameters include a current working mode and configuration parameters, and the current working mode includes a first mode for electrical stimulation or a second mode for electric field therapy.

[0143] For details, please see Figure 4 S11 of the illustrated embodiment will not be described in detail here.

[0144] S32, obtaining the electrical signal fed back by the feedback unit.

[0145] For details, please see Figure 4 S12 of the illustrated embodiment will not be described in detail here.

[0146] S33 , adjusting the reference voltage or driving signal of the AC / DC unit based on the current working mode, configuration parameters, and electrical signals.

[0147] Specifically, the above S33 includes:

[0148] S331 : Determine an initial value of a reference voltage and a second comparison reference value based on configuration parameters.

[0149] The configuration parameters may include a range of stimulation currents, and the initial value of the reference voltage is determined based on the range of stimulation currents. For example, in the second mode, the initial value of the reference voltage is directly calculated using the maximum value of the stimulation current to determine the initial value of the reference voltage.

[0150] The second comparison reference value is a reference value for closed-loop control of the driving signal. The subsequent feedback unit outputs the collected electrical signal to the electronic device, which compares the second comparison reference value with the electrical signal to adjust the driving signal.

[0151] S332, controlling the DC unit to output an initial value of the reference voltage.

[0152] After determining the initial value of the reference voltage, the electronic device controls the DC unit to output the initial value of the reference voltage. Specifically, the voltage adjustment module in the DC unit is controlled to output the initial value of the reference voltage.

[0153] S333: Compare the electrical signal with a second comparison reference value.

[0154] S334 , adjusting the driving signal output to the AC / DC unit based on the comparison result.

[0155] The electronic device performs closed-loop control on the drive signal, receives the feedback electrical signal, compares the electrical signal with a second comparison reference value, obtains a comparison result, and performs closed-loop calculations. The result is then used to adjust the drive signal and output the adjusted drive signal to the AC / DC unit.

[0156] The control method of the electrical stimulation and electric field therapy device provided in this embodiment has higher overall efficiency due to the larger current mode.

[0157] In some optional implementations of this embodiment, the above S334 may include:

[0158] (1) Adjust the drive signal output to the AC / DC unit based on the comparison result.

[0159] (2) Determine whether the timing of the driving signal of the current polarity has ended.

[0160] (3) When the timing time ends, the polarity of the driving signal is switched and the driving signal with switched polarity is output to the AC / DC unit.

[0161] Corresponding to the first mode described above, the electronic device uses the closed-loop calculation results to adjust the drive signal to meet the requirements. Simultaneously, during the process of outputting the drive signal, it also determines whether the timing of the drive signal of the current polarity has expired. If not, the drive signal of the current polarity continues to be output. If the timing has expired, the drive signal polarity is switched and the switched drive signal is output to the AC / DC unit.

[0162] As a specific application example of this embodiment, in the higher current mode, if the same reference voltage adjustment method as in the first mode is used, the efficiency of the electrical stimulation and electric field therapy device will be reduced. Therefore, in the second mode, the controller performs closed-loop calculations based on the parameter settings and the electrical signal sampled by the feedback unit, outputting the corresponding full-bridge circuit output pulses. The waveform is then controlled through the filtering circuit.

[0163] This embodiment also provides a control device for an electrical stimulation and electric field therapy device, which is used to implement the above-mentioned embodiments and preferred embodiments. Details already described are omitted for clarity. As used below, the term "module" may refer to a combination of software and / or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation using hardware, or a combination of software and hardware, is also possible and contemplated.

[0164] This embodiment provides a control device for an electrical stimulation and electric field therapy device, such as Figure 7 As shown, including:

[0165] A first acquisition module 401 is configured to acquire settings of current control parameters of the electrical stimulation and electric field therapy device, wherein the current control parameters include a current operating mode and configuration parameters, and the current operating mode includes a first mode for electrical stimulation or a second mode for electric field therapy;

[0166] A second acquisition module 402 is configured to acquire the electrical signal fed back by the feedback unit;

[0167] The adjustment module 403 is configured to adjust the reference voltage or the drive signal of the AC / DC unit based on the current working mode, the configuration parameters, and the electrical signal.

[0168] The control device of the electrical stimulation and electric field therapy equipment in this embodiment is presented in the form of a functional unit, where the unit refers to an ASIC circuit, a processor and memory that executes one or more software or fixed programs, and / or other devices that can provide the above functions.

[0169] The further functional description of each of the above modules is the same as that of the above corresponding embodiments and will not be repeated here.

[0170] An embodiment of the present invention further provides an electronic device having the above Figure 8 The control device of the electrical stimulation and electric field therapy device shown in the figure. The electronic device can be the controller used in the electrical stimulation and electric field therapy circuit mentioned above.

[0171] See also Figure 8 , Figure 8 is a structural diagram of an electronic device provided by an optional embodiment of the present invention, such as Figure 8As shown, the electronic device may include: at least one processor 601, such as a CPU (Central Processing Unit), at least one communication interface 603, a memory 604, and at least one communication bus 602. The communication bus 602 is used to realize the connection and communication between these components. The communication interface 603 may include a display screen (Display), a keyboard (Keyboard), and the optional communication interface 603 may also include a standard wired interface and a wireless interface. The memory 604 may be a high-speed RAM memory (Random Access Memory, volatile random access memory) or a non-volatile memory (non-volatile memory), such as at least one disk memory. The memory 604 may optionally be at least one storage device located away from the aforementioned processor 601. The processor 601 may be combined with Figure 7 In the described apparatus, the memory 604 stores an application program, and the processor 601 calls the program code stored in the memory 604 to execute any of the above method steps.

[0172] The communication bus 602 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The communication bus 602 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 8 Only one thick line is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0173] Among them, the memory 604 may include volatile memory (English: volatile memory), such as random-access memory (English: random-access memory, abbreviated: RAM); the memory may also include non-volatile memory (English: non-volatile memory), such as flash memory (English: flash memory), hard disk drive (English: hard disk drive, abbreviated: HDD) or solid-state drive (English: solid-state drive, abbreviated: SSD); the memory 604 may also include a combination of the above types of memory.

[0174] The processor 601 may be a central processing unit (CPU), a network processor (NP), or a combination of a CPU and a NP.

[0175] The processor 601 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL), or any combination thereof.

[0176] Optionally, the memory 604 is further configured to store program instructions. The processor 601 may call the program instructions to implement the control method of the electrical stimulation and electric field therapy device as shown in any embodiment of the present application.

[0177] An embodiment of the present invention further provides a non-transitory computer storage medium storing computer-executable instructions that can execute the control method of the electrical stimulation and electric field therapy device in any of the above method embodiments. The storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM), a random access memory (RAM), a flash memory, a hard disk drive (HDD), or a solid-state drive (SSD); the storage medium can also include a combination of the above types of memory.

[0178] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention. Such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A circuit for electrical stimulation and electric field therapy, characterized in that include: A DC unit, used to provide a reference voltage to the AC / DC unit; an AC / DC unit, connected to the controller and the electrodes respectively, wherein the AC / DC unit is a DC-AC circuit; a feedback unit, connected to the AC / DC unit and the controller, respectively, and configured to feed back the electrical signal of the AC / DC unit to the controller; The controller is configured to adjust the reference voltage based on the electrical signal when the circuit operates in the first mode for electrical stimulation; further configured to adjust a drive signal of the AC / DC unit based on the electrical signal when the circuit operates in a second mode for electric field therapy; The range of stimulation current provided by the first mode is smaller than the range of stimulation current provided by the second mode; The feedback unit includes: A first feedback module comprises an electrical signal branch and an operational amplifier branch, wherein the electrical signal branch is connected to the AC / DC unit, and the operational amplifier branch is connected to the electrical signal branch and the controller respectively; The second feedback module has a current detection component, which is used to measure the electrical signal and feed the electrical signal back to the controller.

2. The circuit for electrical stimulation and electric field therapy according to claim 1, characterized in that The electrical signal branch comprises: a first controllable switch connected to the AC / DC unit and the operational amplifier branch respectively; A resistor, wherein a first end is connected to the first controllable switch, a second end of the resistor is grounded, and the first end is connected to the operational amplifier branch.

3. The circuit for electrical stimulation and electric field therapy according to claim 2, characterized in that The first feedback module further includes: A second controllable switch is connected in parallel with the electrical signal branch, and the controller is used to control the action of the second controllable switch based on the working mode of the circuit.

4. The circuit for electrical stimulation and electric field therapy according to claim 1, characterized in that The DC unit includes: Power module; A voltage adjustment module, wherein the input end of the voltage adjustment module is connected to the power module; the output end of the voltage adjustment module is connected to the AC / DC unit for providing the reference voltage; and the control end of the voltage adjustment module is connected to the controller.

5. The circuit for electrical stimulation and electric field therapy according to claim 1, characterized in that The AC / DC unit includes: a driving module connected to a first terminal and a second terminal of the controller, wherein the first terminal corresponds to the first mode and the second terminal corresponds to the second mode; An isolation module, used to connect the driving module with the corresponding controllable module; The controllable module is connected to the DC unit, the electrode and the feedback unit respectively.

6. The circuit for electrical stimulation and electric field therapy according to claim 5, characterized in that The isolation module is a photoelectric isolation module.

7. A device for electrical stimulation and electric field therapy, characterized in that include: Equipment body; The circuit for electrical stimulation and electric field therapy according to any one of claims 1 to 6, wherein the circuit is arranged in the device body; The electrodes are connected to the AC and DC units of the circuit.

8. The device for electrical stimulation and electric field therapy according to claim 7, characterized in that Also includes: A setting unit is connected to the controller, and is used to determine the working mode of the circuit.

9. The device for electrical stimulation and electric field therapy according to claim 8, characterized in that The setting unit is a wireless communication device, which is connected to the controller via wireless communication.

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