CN118161749B - Wearable multi-point distributed brain stimulation system - Google Patents

Abstract

The invention discloses a wearable multipoint distributed brain stimulation system, which comprises a plurality of stimulator bodies, wherein the stimulator bodies are fixed at various points of the skull of a patient according to the need, each stimulator body is provided with at least one electrode, and the electrodes are contacted with the surface of the brain of the patient; and the wearing equipment is worn on the head of the patient, a plurality of control hosts which are in one-to-one butt joint with the stimulator bodies are arranged on the inner side of the wearing equipment, each control host supplies power for the stimulator bodies in an electromagnetic wireless transmission mode, and each control host controls the electrodes of the corresponding stimulator bodies to discharge according to the needs in a wireless communication mode to execute electric stimulation. According to the invention, the stimulator body and the control host are connected in a split manner, so that the risks and disadvantages of traditional wired connection are eliminated, and the stimulator body is distributed in a multi-point deployment and networking manner, so that multi-dimensional brain stimulation is formed.

Description

A wearable multi-point distributed brain stimulation system

Technical Field

The present invention relates to the field of radio frequency communication technology, and more specifically, the present invention is a wearable multi-point distributed brain stimulation system.

Background Art

Currently, Parkinson's disease patients and epilepsy patients can receive early drug treatment to alleviate disease progression and improve patient symptoms. However, long-term use of drugs will lead to reduced efficacy and side effects. When drug options are ineffective, ineffective, or produce intolerable side effects, deep brain stimulation can be used to treat tremors and other symptoms.

Implantable stimulators DBS can provide precise electrical stimulation to continuously activate the brain, but these implanted electrodes require complex surgical procedures, and the cost and complexity may limit patient adoption. The implantable stimulator consists of a battery-powered implantable pulse generator that is connected to the stimulation site by wires. For example: Chinese invention patent specification CN104189995B discloses deep brain stimulation electrodes, devices and methods. When the generator is implanted in the chest, the wires must pass through the head and neck. It is reported that 4% to 15% of the implanted wires are frequently moved, causing the wires to move and break, and the batteries in the generator must be replaced after several years of use, which will cause the patient to undergo surgery again.

Summary of the invention

In order to solve the technical problems existing in the background technology, the present invention innovatively provides a wearable multi-point distributed brain stimulation system. From the perspective of split design, the stimulator body and the control host are connected in a split manner, getting rid of the risks and disadvantages of traditional wired connections. The stimulator body is deployed at multiple points in a distributed network to form multi-dimensional brain stimulation.

To achieve the above technical objectives, the embodiment of the present invention discloses a wearable multi-point distributed brain stimulation system, comprising:

The stimulator bodies are provided in a plurality, and the plurality of stimulator bodies are fixed at various points of the patient's skull as required, and each of the stimulator bodies is provided with at least one electrode, and the electrode contacts the surface of the patient's brain; and

The wearable device is worn on the patient's head. A plurality of control hosts connected one by one with the stimulator body are installed on the inner side of the wearable device. Each of the control hosts uses electromagnetic wireless transmission to power the stimulator body, and each of the control hosts uses wireless communication to control the electrodes of the corresponding stimulator body to discharge on demand and perform electrical stimulation.

Furthermore, the present invention provides a wearable multi-point distributed brain stimulation system, wherein a first magnetic coil is provided at the upper end of the stimulator body, and a second magnetic coil is provided at the lower end of the control host. After the control host is docked with the stimulator body, the second magnetic coil covers the first magnetic coil, so that the first magnetic coil is coupled with the second magnetic coil, and electrical energy is transferred from the second magnetic coil to the first magnetic coil to power the stimulator body.

Furthermore, the present invention provides a wearable multi-point distributed brain stimulation system, wherein the first magnetic coil is electrically connected to an energy storage battery, and the energy storage battery is used to store the electrical energy transmitted from the second magnetic coil to the first magnetic coil. The energy storage battery is also electrically connected to a first power management circuit, and the first power management circuit is used to provide the required operating voltage for the stimulator body.

Furthermore, the present invention provides a wearable multi-point distributed brain stimulation system, wherein the lower end of the control host is provided with an annular magnet, the second magnetic coil is fixed to the lower end of the inner circumferential wall of the annular magnet, the stimulator body includes a shell and an upper cover, the shell is barrel-shaped, the upper cover is made of ferromagnetic material, the upper cover is sealed and fastened at the opening of the shell, and the first magnetic coil is fixed to the inner wall of the upper cover.

Furthermore, the present invention provides a wearable multi-point distributed brain stimulation system, wherein the housing of the stimulator body is further provided with an electric stimulation circuit, an EEG acquisition circuit, an EEG amplification circuit, an EEG filtering circuit, an EEG AD conversion circuit and a first Bluetooth main control circuit, wherein the electric stimulation circuit is connected to the electrode to control the electrode discharge to perform electric stimulation; the EEG acquisition circuit is connected to the electrode to acquire EEG signals, the EEG amplification circuit is connected to the EEG acquisition circuit to amplify the acquired EEG signals at a set magnification; the EEG filtering circuit is connected to the EEG amplification circuit to remove the power frequency interference signal in the amplified EEG signal; the input end of the EEG AD conversion circuit is connected to the EEG filtering circuit The device is connected to a first Bluetooth main control circuit for converting the filtered EEG signal from an analog signal to a digital signal. The output of the EEG AD conversion circuit is connected to a first Bluetooth main control circuit for transferring the digitized EEG signal to the first Bluetooth main control circuit. The first Bluetooth main control circuit establishes a communication link with a control host via a Bluetooth communication protocol for uploading the EEG signal to the control host. The first Bluetooth main control circuit is also connected to an electric stimulation circuit for receiving stimulation instructions issued by the control host to control the discharge of electrodes connected to the electric stimulation circuit. The operating voltage required by the electric stimulation circuit, the EEG acquisition circuit, the EEG amplification circuit, the EEG filtering circuit, the EEG AD conversion circuit and the first Bluetooth main control circuit is provided by a first power management circuit.

Furthermore, the present invention provides a wearable multi-point distributed brain stimulation system, wherein a first flexible circuit board, a second flexible circuit board, a third flexible circuit board and a fourth flexible circuit board are stacked from top to bottom in the shell of the stimulator body, the first Bluetooth main control circuit is printed on the first flexible circuit board, the EEG AD conversion circuit is printed on the second flexible circuit board, the EEG acquisition circuit, the EEG amplification circuit and the EEG filtering circuit are printed on the third flexible circuit board, the electrical stimulation circuit is printed on the fourth flexible circuit board, and the first flexible circuit board, the second flexible circuit board, the third flexible circuit board and the fourth flexible circuit board are connected by through-layer conductive columns.

Furthermore, the present invention provides a wearable multi-point distributed brain stimulation system, wherein the electrical stimulation circuit comprises a first MOS switch tube Q1, a second MOS switch tube Q2, a third MOS switch tube Q3 and a fourth MOS switch tube Q4, the gate of the first MOS switch tube Q1 is connected to the first signal output end of the first Bluetooth main control circuit, the drain of the first MOS switch tube Q1 is connected to the anode of the electrode, and the source of the first MOS switch tube Q1 is connected to the cathode of the electrode through a coupling capacitor C1; the gate of the second MOS switch tube Q2 is connected to the second signal output end of the first Bluetooth main control circuit, and ... second MOS switch tube Q1 is connected to the anode of the electrode, and the source of the first MOS switch tube Q1 is connected to the cathode of the electrode through a coupling capacitor C1. The drain of the S switch tube Q2 is connected to the cathode of the electrode through the coupling capacitor C1; the gates of the third MOS switch tube Q3 and the fourth MOS switch tube Q4 are both connected to the third signal output end of the first Bluetooth main control circuit, the drain of the third MOS switch tube Q3 is connected to the power supply, the source of the third MOS switch tube Q3 and the drain of the fourth MOS switch tube Q4 are both connected to the source of the second MOS switch tube Q2 through the tank capacitor C2, the source of the fourth MOS switch tube Q4 is grounded, and the first signal output end, the second signal output end and the third signal output end of the first Bluetooth main control circuit are used to output level signals.

Furthermore, the present invention provides a wearable multi-point distributed brain stimulation system, wherein a resistor R1 is connected in parallel between the cathode and anode of the electrode.

Furthermore, the present invention provides a wearable multi-point distributed brain stimulation system, wherein the control host is also provided with a lithium battery and a second Bluetooth main control circuit, the lithium battery is electrically connected to the second magnetic coil, the second Bluetooth main control circuit is electrically connected to the lithium battery through a second power management circuit, and the second Bluetooth main control circuit establishes a communication link with the first Bluetooth main control circuit through a Bluetooth communication protocol.

Furthermore, the present invention provides a wearable multi-point distributed brain stimulation system, wherein the lithium battery is also connected to a charging circuit, and the charging circuit is provided with a USB charging interface.

The difference between the present invention and the prior art is that the present invention fixes multiple stimulator bodies on demand at various points of the patient's skull, and each stimulator body is provided with at least one electrode. After fixation, the electrode contacts the surface of the patient's brain, and multiple control hosts installed on the inner side of the wearable device worn on the patient's head are connected one by one with the stimulator bodies. Each control host uses electromagnetic wireless transmission to power the stimulator body, and each control host uses wireless communication to control the electrodes of the corresponding stimulator body to discharge and perform electrical stimulation on demand. This setting method does not require the implantation of complex leads in the patient's body, greatly simplifies the operation time, and can avoid later risks. The stimulator body can be deployed at multiple points, and can be distributed networked to cover the entire brain surface according to the disease to form brain network neural regulation. Multiple point stimulation can be achieved in different areas of the brain at different times to improve the prognosis effect. When using, you only need to align the control host on the inside of the wearable device with the stimulator body. This process does not require personal operation by a professional doctor, and the patient can complete it at home. It greatly facilitates the life of the patient and avoids the loss of time and money caused by frequent trips to the hospital. It allows patients to enjoy high-quality medical services at home, saving patients' precious time and greatly reducing medical costs, allowing patients to enjoy safe and efficient brain monitoring and treatment services in a comfortable home environment.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of a stimulator body in a wearable multi-point distributed brain stimulation system of the present invention;

FIG2 is a schematic diagram of the structure of wearable equipment in a wearable multi-point distributed brain stimulation system of the present invention;

FIG3 is a schematic diagram of the structure of the connection between the annular magnet of the control host and the stimulator body in a wearable multi-point distributed brain stimulation system of the present invention;

FIG4 is a schematic diagram of the structure of the connection between the annular magnet of the control host and the stimulator body in a wearable multi-point distributed brain stimulation system of the present invention, shown in the form of a wireframe diagram;

FIG5 is a schematic diagram of the three-dimensional structure of the stimulator without the housing of the stimulator body on the basis of FIG1;

FIG6 is a schematic diagram of a three-dimensional structure rotated from another angle based on FIG5;

FIG7 is a schematic diagram of the circuit structure of the first power management circuit in the stimulator body;

FIG8 is a block diagram of the structure of the stimulator body;

FIG9 is a schematic diagram of the circuit structure of the first Bluetooth main control circuit in the stimulator body;

FIG10 is a schematic diagram of the circuit structure of the EEG acquisition circuit in the stimulator body;

FIG11 is a schematic diagram of the circuit structure of the EEG filter circuit in the stimulator body;

FIG12 is a schematic diagram of the circuit structure of the electroencephalogram amplifying circuit in the stimulator body;

FIG. 13 is a schematic diagram of the circuit structure of the electrical stimulation circuit in the stimulator body.

DETAILED DESCRIPTION

A wearable multi-point distributed brain stimulation system of the present invention is explained and illustrated in detail below in conjunction with the drawings in the specification.

As shown in FIGS. 1-3 , an embodiment of the present invention discloses a wearable multi-point distributed brain stimulation system, comprising:

The stimulator body 1 is provided in multiple numbers, and the multiple stimulator bodies 1 are fixed at various points of the patient's skull as required, and each stimulator body 1 is provided with at least one electrode 11, and the electrode 11 contacts the surface of the patient's brain; and,

The wearable device 2 is worn on the patient's head. A plurality of control hosts 3 are installed on the inner side of the wearable device 2, which are connected one by one with the stimulator body 1. Each control host 3 uses electromagnetic wireless transmission to power the stimulator body 1, and each control host 3 uses wireless communication to control the electrode 11 of the corresponding stimulator body 1 to discharge and perform electrical stimulation as needed.

In this embodiment, multiple stimulator bodies 1 are fixed on demand at various points of the patient's skull, and each stimulator body 1 is provided with at least one electrode 11. After fixation, the electrode 11 contacts the surface of the patient's brain, and multiple control hosts 3 installed on the inner side of the patient's head wearable device 2 are connected to the stimulator body 1 one by one. The wearable device 2 can be a head-worn device such as a hat or a helmet. Each control host 3 uses electromagnetic wireless transmission to power the stimulator body 1, and each control host 3 uses wireless communication to control the electrode 11 of the corresponding stimulator body 1 to discharge and perform electrical stimulation on demand. This setting method does not require the implantation of complex leads in the patient's body, greatly simplifies the operation time, and can avoid later risks. The stimulator body 1 can be deployed at multiple points, and can be distributed networked according to the disease to cover the entire brain surface, forming brain network neural regulation, and can achieve multiple point stimulation at different times for different areas of the brain to improve the prognosis effect. When in use, it is only necessary to align the control host 3 on the inside of the wearable device 2 with the stimulator body 1. This process does not require personal operation by a professional doctor, and the patient can complete it at home by himself, which greatly facilitates the life of the patient and avoids the loss of time and money caused by frequent trips to the hospital. It allows patients to enjoy high-quality medical services at home, saves patients' precious time, and greatly reduces the cost of medical treatment, allowing patients to enjoy safe and efficient brain monitoring and treatment services in a comfortable home environment.

As shown in Fig. 4, Fig. 6 and Fig. 7, in one embodiment of the present invention, a method for realizing that the control host 3 supplies power to the stimulator body 1 is provided. More specifically, the method is realized by the following structure: a first magnetic coil 12 is provided at the upper end of the stimulator body 1, and a second magnetic coil 31 is provided at the lower end of the control host 3. When the control host 3 is docked with the stimulator body 1, the second magnetic coil 31 covers the first magnetic coil 12, so that the first magnetic coil 12 is coupled with the second magnetic coil 31. This coupling method makes full use of the principle of electromagnetic induction, thereby realizing the transfer of electric energy from the second magnetic coil to the first magnetic coil, and supplying power to the stimulator body 1. This power supply method enables the stimulator body 1 to obtain sufficient energy without wire connection, thereby ensuring the normal operation of the stimulator body 1.

When distributing electric energy, the first magnetic coil 12 is electrically connected to an energy storage battery 13, and the energy storage battery 13 is used to store the electric energy transmitted from the second magnetic coil 31 to the first magnetic coil 12. In order to ensure the normal operation of the components of the stimulator body 1, the energy storage battery 13 can also be a button battery. In addition, the energy storage battery 13 is also electrically connected to a first power management circuit 14 (as shown in FIG. 7 ). The main function of the first power management circuit 14 is to provide the required working voltage for the stimulator body 1. The first power management circuit 14 can convert the voltage of the energy storage battery 13 into the working voltage required by the components of the stimulator body 1, such as 3.3V.

In this embodiment, the first magnetic coil 12 and the second magnetic coil 31 are coupled to realize efficient and reliable power supply to the stimulator body 1, and solve the problem of power distribution. It can completely get rid of the traditional wired power supply method, save the wire embedding step during surgery, and greatly save surgery time.

As shown in Fig. 4-6, in one embodiment of the present invention, the lower end of the control host 3 is provided with an annular magnet 32, the second magnetic coil 31 is fixed to the lower end of the inner peripheral wall of the annular magnet 32, the stimulator body 1 includes a shell 14 and an upper cover 15, the shell 14 is in the shape of a barrel, the upper cover 15 is made of ferromagnetic material, the upper cover 15 is sealed and buckled at the opening of the shell 14, and the first magnetic coil 12 is fixed to the inner side wall of the upper cover 15. In actual use, the wearable device 2 is worn on the patient's head, and the control host 3 in the wearable device 2 is easily docked with the stimulator body 1 through the magnetic attraction of the annular magnet 32 and the upper cover 15. At this time, the second magnetic coil 31 just covers the top of the first magnetic coil 12, ensuring the stable power supply of the stimulator body 1. The stimulator body 1 and the control host 3 are correspondingly set to multiple pairs, so that a multi-point magnetic attraction can be formed, and the control host 3 after docking can be effectively prevented from being offset relative to the stimulator body 1 through the magnetic attraction of the multi-point position. No artificial docking is required, and a comfortable and safe use experience can be provided for patients.

As shown in Figures 8 to 13, in one embodiment of the present invention, an electric stimulation circuit 16 (as shown in Figure 13), an EEG acquisition circuit 17 (as shown in Figure 10), an EEG amplification circuit 18 (as shown in Figure 12), an EEG filtering circuit 19 (as shown in Figure 11), an EEG AD conversion circuit 110 and a first Bluetooth main control circuit 111 (as shown in Figure 9) are also provided in the shell 14 of the stimulator body 1. The electric stimulation circuit 16 is connected to the electrode 11 to control the discharge of the electrode 11 to perform electric stimulation; the EEG acquisition circuit 17 is connected to the electrode 11 to collect EEG signals; the EEG amplification circuit 18 is connected to the EEG acquisition circuit 17 to amplify the collected EEG signals according to a set magnification; the EEG filtering circuit 19 is connected to the EEG amplification circuit 18 to remove the industrial frequency interference signal in the amplified EEG signals; the EEG AD conversion circuit 11 The input end of 0 is connected to the EEG filter circuit 19, which is used to convert the filtered EEG signal from an analog signal to a digital signal. The output of the EEG AD conversion circuit 110 is connected to the first Bluetooth main control circuit 111, which is used to transfer the digitized EEG signal to the first Bluetooth main control circuit 111; the first Bluetooth main control circuit 111 establishes a communication link with the control host 3 through the Bluetooth communication protocol, which is used to upload the EEG signal to the control host 3; the first Bluetooth main control circuit 111 is also connected to the electric stimulation circuit 16, which is used to receive the stimulation instruction issued by the control host 3 to control the discharge of the electrode 11 connected to the electric stimulation circuit 16, and the working voltage required by the electric stimulation circuit 16, the EEG acquisition circuit 17, the EEG amplification circuit 18, the EEG filter circuit 19, the EEG AD conversion circuit 110 and the first Bluetooth main control circuit 111 is provided by the first power management circuit 14.

In this embodiment, the wireless stimulators at various points can be automatically inspected, and then networked and connected, and the brain's electroencephalogram signals can be collected in real time, and the stimulation parameters can be adjusted in real time according to the actual situation of the brain. The control host 3 can be used to divide the brain into different areas, and each area can be assigned one or more electrodes 11. The control host 3 sends stimulation instructions to control the discharge of the corresponding regional electrodes 11, so as to realize the optional regulation of the spatial dimensions of different brain areas. It is also possible to select and activate the designated electrodes 11 at different time points by controlling the host 3 to realize the time multiplexing effect and stimulate multiple points. It is also possible to adjust the stimulation frequency, intensity and waveform of each electrode 11 by controlling the host 3, realize accurate control of multiple electrodes 11 working simultaneously, apply different stimulation parameters to different electrodes 11, and thus improve the accuracy of brain electrical stimulation and optimize the therapeutic effect.

As shown in Figures 5 and 6 in combination with Figure 8, in one embodiment of the present invention, a first flexible circuit board 112, a second flexible circuit board 113, a third flexible circuit board 114 and a fourth flexible circuit board 115 are stacked from top to bottom in the shell 14 of the stimulator body 1, the first Bluetooth main control circuit 111 is printed on the first flexible circuit board 112, the EEG AD conversion circuit 110 is printed on the second flexible circuit board 113, the EEG acquisition circuit 17, the EEG amplification circuit 18 and the EEG filtering circuit 19 are printed on the third flexible circuit board 114, the electrical stimulation circuit 16 is printed on the fourth flexible circuit board 115, and the first flexible circuit board 112, the second flexible circuit board 113, the third flexible circuit board 114 and the fourth flexible circuit board 115 are connected by a through-layer conductive column 116.

In this embodiment, the various components inside the stimulator body 1 are arranged in a stacked manner, which can greatly reduce the volume of the stimulator body 1, control the diameter of the stimulator body 1 within 15 mm, and control the height within 10 mm, thereby reducing the size of the skull opening and the wound, while also reducing the difficulty of surgical operation.

As shown in FIG. 9 and in combination with FIG. 13, in one embodiment of the present invention, the electrical stimulation circuit 16 includes a first MOS switch tube Q1, a second MOS switch tube Q2, a third MOS switch tube Q3 and a fourth MOS switch tube Q4, the gate of the first MOS switch tube Q1 is connected to the first signal output end of the first Bluetooth main control circuit 111, the drain of the first MOS switch tube Q1 is connected to the anode of the electrode 11, and the source of the first MOS switch tube Q1 is connected to the cathode of the electrode 11 through the coupling capacitor C1; the gate of the second MOS switch tube Q2 is connected to the second signal output end of the first Bluetooth main control circuit 111, and the drain of the second MOS switch tube Q2 is connected to the cathode of the electrode 11 through the coupling capacitor C1; the third MOS switch tube Q3 and the fourth MO The gate of the S switch tube Q4 is connected to the third signal output terminal of the first Bluetooth main control circuit 111, the drain of the third MOS switch tube Q3 is connected to the power supply, the source of the third MOS switch tube Q3 and the drain of the fourth MOS switch tube Q4 are connected to the source of the second MOS switch tube Q2 through the tank capacitor C2, the source of the fourth MOS switch tube Q4 is grounded, the first signal output terminal, the second signal output terminal and the third signal output terminal of the first Bluetooth main control circuit 111 are used to output level signals, and a resistor R1 is connected in parallel between the cathode and the anode of the electrode 11.

In this embodiment, the first signal output terminal of the first Bluetooth main control circuit 111 is the P0.11 pin in Figure 9, the second signal output terminal is the P0.12 pin in Figure 9, and the third signal output terminal is the P0.13 pin in Figure 9, and the output is a high level signal or a low level signal. The VDD voltage is 3V. When the stimulator body 1 is in an activated state, the first signal output terminal, the second signal output terminal and the third signal output terminal of the first Bluetooth main control circuit 111 all maintain a low level. At this time, the first MOS switch tube Q1, the second MOS switch tube Q2, the third MOS switch tube Q3 and the fourth MOS switch tube Q4 are all in a cut-off state, and the tank capacitor C2 is charged to the voltage VDD, and the coupling capacitor C1 is slowly discharged through the resistor R1. The discharge current flows through the electrodes 11 connected to the V+ and V- ends through the human tissue without generating electrical stimulation. The third signal output terminal is used to determine the magnitude of the stimulation amplitude. More specifically, if the stimulation amplitude is selected as 6V, the third signal output terminal outputs a high level, so that the third MOS switch tube Q3 is turned on, and the fourth MOS switch tube Q4 is turned off, so that the positive electrode of the can capacitor C2 is connected to the negative electrode of the power supply. At this time, the voltage difference between the negative electrode of the can capacitor C2 and VDD is 6V. If the stimulation amplitude is selected as 3V, the third signal output terminal outputs a low level, so that the positive electrode of the can capacitor C2 is connected to the positive electrode of the power supply. At this time, the voltage difference between the can capacitor C2 and VDD is 3V. When the second signal output terminal becomes a high level, the second MOS switch tube Q2 is turned on, so that the negative electrode of the can capacitor C2 is connected to the coupling capacitor C1, so that the stimulator body 1 sends a stimulation signal to the brain, and the leading edge voltage of the pulse signal applied to the two ends of the electrode 11V+ and V- is equal to the selected 3V or 6V voltage. During the transmission of the stimulation pulse, this voltage gradually decays with the discharge of the can capacitor C2 and the charging of the coupling capacitor C1. When the stimulation pulse is sent, all stimulation-related signal outputs are reset to the inactive state.

In one embodiment of the present invention, a lithium battery and a second Bluetooth main control circuit are also provided in the control host 3, the lithium battery is electrically connected to the second magnetic coil 31, the second Bluetooth main control circuit is electrically connected to the lithium battery through the second power management circuit, and the second Bluetooth main control circuit establishes a communication link with the first Bluetooth main control circuit 111 through the Bluetooth communication protocol. The lithium battery is also connected to a charging circuit, and the charging circuit is provided with a USB charging interface.

In this embodiment, the lithium battery is the power source of the control host 3, providing a stable power supply for the control host 3. In order to improve the charging efficiency and convenience of use, the lithium battery is also connected to the charging circuit. The charging circuit is provided with a USB charging interface, and the patient or user can use a common USB data cable to charge the device, and realize the wireless charging function through the second magnetic coil 31. A second Bluetooth main control circuit is also provided in the control host 3. The second Bluetooth main control circuit is electrically connected to the lithium battery through the second power management circuit to obtain a stable power supply. In addition, the second Bluetooth main control circuit also establishes a communication link with the first Bluetooth main control circuit 111 through the Bluetooth communication protocol. And then together constitute an efficient and stable communication system. Through this communication system, wireless charging and Bluetooth communication functions can be easily realized.

In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and simple improvements made to the essential contents of the present invention shall be included in the protection scope of the present invention.

Claims (8)

1. A wearable multi-point distributed brain stimulation system, comprising:

The plurality of stimulator bodies are arranged and fixed at various points of the skull of the patient according to the need, and each stimulator body is provided with at least one electrode which is contacted with the surface of the brain of the patient; and

The wearing equipment is worn on the head of a patient, a plurality of control hosts which are in one-to-one butt joint with the stimulator bodies are arranged on the inner side of the wearing equipment, each control host supplies power for the stimulator bodies in an electromagnetic wireless transmission mode, and each control host controls electrodes of the corresponding stimulator bodies to discharge according to requirements to execute electric stimulation in a wireless communication mode;

The upper end of the stimulator body is provided with a first magnetic coil, the lower end of the control host is provided with a second magnetic coil, the lower end of the control host is provided with a ring magnet, the second magnetic coil is fixed at the lower end of the inner peripheral wall of the ring magnet, the stimulator body comprises a shell and an upper cover, the shell is barrel-shaped, the upper cover is made of ferromagnetic materials, the upper cover is buckled at the opening of the shell in a sealing way, and the first magnetic coil is fixed on the inner side wall of the upper cover;

The novel brain electrical stimulator comprises a stimulator body and is characterized in that an electrical stimulation circuit, an electroencephalogram acquisition circuit, an electroencephalogram amplification circuit, an electroencephalogram filter circuit, an electroencephalogram AD conversion circuit and a first Bluetooth master control circuit are further arranged in a shell of the stimulator body, a first flexible circuit board, a second flexible circuit board, a third flexible circuit board and a fourth flexible circuit board are stacked from top to bottom in the shell of the stimulator body, the first Bluetooth master control circuit is printed on the first flexible circuit board, the electroencephalogram AD conversion circuit is printed on the second flexible circuit board, the electroencephalogram acquisition circuit, the electroencephalogram amplification circuit and the electroencephalogram filter circuit are printed on the third flexible circuit board, the electrical stimulation circuit is printed on the fourth flexible circuit board, and the first flexible circuit board, the second flexible circuit board, the third flexible circuit board and the fourth flexible circuit board are connected through a through-layer conductive column.

2. The wearable multipoint distributed brain stimulation system according to claim 1, wherein the second magnetic coil covers the first magnetic coil after the control host interfaces with the stimulator body, the first magnetic coil is coupled to the second magnetic coil, and power is transferred from the second magnetic coil to the first magnetic coil to power the stimulator body.

3. The wearable multipoint distributed brain stimulation system according to claim 2, wherein the first magnetic coil is electrically connected to an energy storage battery, the energy storage battery is configured to store electrical energy transferred from the second magnetic coil to the first magnetic coil, and the energy storage battery is further electrically connected to a first power management circuit, the first power management circuit is configured to provide a required operating voltage for the stimulator body.

4. The wearable multipoint distributed brain stimulation system according to claim 2, wherein the electrical stimulation circuit is coupled to the electrodes for controlling the discharge of the electrodes to perform electrical stimulation; the electroencephalogram acquisition circuit is connected with the electrodes and used for acquiring electroencephalogram signals, and the electroencephalogram amplification circuit is connected with the electroencephalogram acquisition circuit and used for amplifying the acquired electroencephalogram signals according to a set multiplying power; the electroencephalogram filter circuit is connected with the electroencephalogram amplifying circuit and is used for removing power frequency interference signals in the amplified electroencephalogram signals; the input end of the electroencephalogram AD conversion circuit is connected with the electroencephalogram filter circuit and is used for converting the filtered electroencephalogram signal into a digital signal from an analog signal, and the output of the electroencephalogram AD conversion circuit is connected with the first Bluetooth master control circuit and is used for transferring the digitized electroencephalogram signal to the first Bluetooth master control circuit; the first Bluetooth main control circuit constructs a communication link with the control host through a Bluetooth communication protocol and is used for uploading the brain electrical signals to the control host; the first Bluetooth main control circuit is also connected with the electric stimulation circuit and is used for receiving a stimulation instruction issued by the control host to control electrode discharge connected with the electric stimulation circuit, and working voltages required by the electric stimulation circuit, the brain electricity acquisition circuit, the brain electricity amplification circuit, the brain electricity filter circuit, the brain electricity AD conversion circuit and the first Bluetooth main control circuit are provided by the first power management circuit.

5. The wearable multipoint distributed brain stimulation system according to claim 1, wherein the electrical stimulation circuit comprises a first MOS switch tube Q1, a second MOS switch tube Q2, a third MOS switch tube Q3 and a fourth MOS switch tube Q4, a gate of the first MOS switch tube Q1 is connected with a first signal output end of a first bluetooth master control circuit, a drain of the first MOS switch tube Q1 is connected with an anode of an electrode, and a source of the first MOS switch tube Q1 is connected with a cathode of the electrode through a coupling capacitor C1; the grid electrode of the second MOS switch tube Q2 is connected with the second signal output end of the first Bluetooth master control circuit, and the drain electrode of the second MOS switch tube Q2 is connected with the cathode of the electrode through a coupling capacitor C1; the grid electrodes of the third MOS switch tube Q3 and the fourth MOS switch tube Q4 are connected with a third signal output end of the first Bluetooth master control circuit, the drain electrode of the third MOS switch tube Q3 is connected with a power supply, the source electrode of the third MOS switch tube Q3 and the drain electrode of the fourth MOS switch tube Q4 are connected with the source electrode of the second MOS switch tube Q2 through a tank capacitor C2, the source electrode of the fourth MOS switch tube Q4 is grounded, and the first signal output end, the second signal output end and the third signal output end of the first Bluetooth master control circuit are used for outputting level signals.

6. The wearable multipoint distributed brain stimulation system according to claim 5, wherein a resistor R1 is connected in parallel between the cathode and the anode of the electrode.

7. The wearable multipoint distributed brain stimulation system according to claim 1, wherein a lithium battery and a second bluetooth master control circuit are further arranged in the control host, the lithium battery is electrically connected with the second magnetic coil, the second bluetooth master control circuit is electrically connected with the lithium battery through a second power management circuit, and the second bluetooth master control circuit is in communication link with the first bluetooth master control circuit through a bluetooth communication protocol.

8. The wearable multipoint distributed brain stimulation system according to claim 7, wherein the lithium battery is further connected with a charging circuit, the charging circuit being provided with a USB charging interface.