CN109908476B - Wearable multi-mode wireless nerve stimulation system - Google Patents

Abstract

The invention discloses a wearable multi-mode wireless nerve stimulation system, which applies current to a human body and stimulates deep nerves of the human body in a wearable mode. The system consists of a wireless gateway and a plurality of wearable electric stimulator nodes, wherein each electric stimulator node and a skin electrode are integrally designed, and each node is configured and controlled through the wireless gateway. The electric stimulator node has two working modes of a single node and a double node, the single node in the working mode outputs pre-modulated intermediate frequency electric pulses from the single node, and the double node in the working mode outputs continuous intermediate frequency electric pulses with certain frequency difference from the two nodes. The double-node working mode comprises a fixed working mode and a scanning working mode, and the position and the change condition of the target stimulation area can be adjusted at will. The system can achieve the purpose of stimulating the deep nerves of the human body by utilizing the portable wearable equipment.

Description

A wearable multimodal wireless neurostimulation system

technical field

The present invention relates to a wearable device for stimulating deep human nerves, in particular to a wearable multi-mode wireless nerve stimulation system.

Background technique

The traditional electrical stimulation device has a simple mode and can only provide low-frequency current or direct current. As the carrier frequency of the stimulation current increases, the impedance of the human body decreases, and the penetration of the intermediate frequency current to the human tissue is much greater than that of the low frequency current. The pre-modulated intermediate frequency current and the beat intermediate frequency current can simultaneously take into account the penetration of the intermediate frequency current to human tissue and the low-frequency response characteristics of neurons, and can be applied to stimulate the nerves in the deep subcutaneous position of the human body. Furthermore, electrical stimulation devices are generally large-scale machines and include complicated electrode connecting lines, which have a great lack of portability.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies of the prior art, and proposes a wearable multi-mode wireless nerve stimulation system, the wireless nerve stimulation system is controlled by a wireless gateway, the wireless gateway controls a plurality of electrical stimulator nodes, and the electrical stimulator nodes Stimulate the deep nerves of the human body in the way of wearable devices. The electrical stimulator node uses an intermediate frequency current that has better penetration into the human body, and effectively transmits the stimulation current to the deep nerves of the human body. The output current parameters of each electrical stimulator node can be adjusted arbitrarily through the wireless gateway, and can work in fixed and scanning working modes to meet diverse needs, so as to achieve the purpose of stimulating deep human nerves with portable wearable devices.

In order to achieve the above purpose, the technical solution provided by the present invention is: a wearable multi-mode wireless neurostimulation system, the system is composed of a wireless gateway and a plurality of wearable electrical stimulator nodes, each node through the wireless gateway. Configuration and control; the output current waveform, amplitude, action time and working mode parameters of each electrical stimulator node are controlled by wireless communication signals, and the output current waveform of each electrical stimulator node acts on the human body through the skin electrode; the skin electrode includes the output The electrode and the ground electrode are two mutually isolated patches, and the entire node is adsorbed on the surface of the human body by the above-mentioned patch; there are two ground electrodes, one is connected to the output electrode through a lead wire, and the other is integrated with the output electrode, wherein, The selection of the two ground electrodes is controlled by a separate switch.

Further, the electrical stimulator node outputs an intermediate frequency electrical pulse signal with adjustable power to the human body through the skin electrode, which can stimulate the nerves deep inside the human body, and the frequency range is 1-100 kHz.

Further, the electrical stimulator node has two working modes: a single node and a double node: the single node working mode is that a single node independently outputs pre-modulated intermediate frequency electrical pulses, and the modulation frequency range is 1-200Hz; The working mode is that two nodes cooperate with each other, each node outputs an intermediate frequency electric pulse without modulation, and the frequency difference between the output electric pulses of the two nodes is in the range of 1-200Hz.

Further, the two-node working mode is divided into two working modes: fixed and scanning according to the mode of output power of the intermediate frequency electric pulse: the fixed working mode is that the output power of the two nodes is fixed, and the target stimulation area is static; scanning The working mode is that the output power of the two nodes is adjusted in opposite directions, that is, the output power of one node increases and the output power of the other node decreases, and the target stimulation area continuously moves along the cross-section of the human body parallel to the skin surface where the two nodes are located.

Further, the electrical stimulator node consists of a CPU, a wireless transceiver, an electrical pulse generator, a battery and a skin electrode, the CPU is used to control the wireless transceiver and the electrical pulse generator to work, and the wireless transceiver is used to receive wireless The wireless control signal sent by the gateway, the battery provides electrical energy for the entire electrical stimulator node, the electrical pulse generator outputs a waveform signal with specific parameters, and the output end is connected to the skin electrode for applying current to the human body.

Compared with the prior art, the present invention has the following advantages and beneficial effects:

1. Control multiple wireless stimulator nodes through the wireless gateway, adopt the integrated design of stimulator and electrodes, and regulate human neural circuits and functions in a portable and simple wearable way.

2. The medium-frequency current with better penetration to the human body is adopted to effectively transmit the current on the body surface to the deep nerves and cause an effective stimulation response, overcoming the large attenuation of traditional low-frequency current and direct current in the body.

3. The multi-node intermediate frequency current is used to stimulate the human body, providing a fixed working mode and a scanning working mode, which are flexible and adjustable to meet diverse needs.

Description of drawings

Figure 1 is a schematic diagram of a wireless gateway controlling multiple electrical stimulator nodes.

Figure 2 is a schematic diagram of the output electrode and ground electrode of the skin electrode

Figure 3 is a current waveform diagram of the single-node operating mode output.

FIG. 4 is a diagram of the output current and the superimposed current waveform in the dual-node operating mode.

FIG. 5 is a schematic diagram of the electrode crossing distribution in the two-node working mode.

FIG. 6 is a schematic diagram of the parallel distribution of electrodes in the dual-node working mode and the fixed working mode.

FIG. 7 is a schematic diagram of the parallel distribution of electrodes and the scanning working mode in the dual-node working mode.

Figure 8 is a schematic diagram of the booster amplifier circuit of the electrical stimulator node.

Detailed ways

The present invention will be further described below in conjunction with specific embodiments.

The wearable multi-mode wireless neurostimulation system provided in this embodiment, specifically, the wireless gateway controls multiple electrical stimulator nodes, each electrical stimulator node can be configured and controlled through wireless communication, and its output current parameters include: The current waveform, amplitude, opening, closing, action time, etc. can be adjusted arbitrarily.

The electrical stimulator node is composed of a CPU, a wireless transceiver, an electrical pulse generator, a battery and a skin electrode. The entire electrical stimulator node device is adsorbed on the surface of the human body through the skin electrode patch, and there is no additional control circuit between the electrodes. Control leads. The wireless nerve stimulation system adopts an intermediate frequency current with better penetration to the human body, and applies the intermediate frequency current outside the human body to reach the deep nerves of the human body. The multi-mode wireless neurostimulation system includes two stimulator nodes, and has two working modes: single node and double node; wherein the single node working mode independently outputs pre-modulated intermediate frequency electrical pulses, and the double node working mode is two nodes. In cooperation with each other, each node outputs non-modulated intermediate frequency electrical pulses whose frequencies differ by a certain value.

The two-node working mode is divided into fixed and scanning working modes, the fixed working mode is that the output power of the two nodes is fixed, and the target stimulation area is static; the scanning working mode is that the respective output powers of the two nodes are unequal. , but the total amount of both is equal. The output power of the two nodes is adjusted respectively, and the target stimulation area is continuously moved along the cross-section of the human body parallel to the skin surface where the two nodes are located.

There are two electrode arrangements in the dual-node working mode, the first arrangement is parallel arrangement, and the second arrangement is cross arrangement.

The multi-mode wireless nerve stimulation system involved in the specific embodiment will be described below with reference to FIG. 1 to FIG. 8 .

As shown in FIG. 1 , the wearable multi-mode wireless neural stimulation system consists of a wireless gateway 101 and a plurality of electrical stimulator nodes 102 , 103 , 104 , and 105 . The wireless gateway 101 transmits wireless signals to control a plurality of electrical stimulator nodes 102 , 103 , 104 , and 105 . The electrical stimulator nodes 102 and 103 are in a single-node working mode, wherein the output electrode 106 and the ground electrode 107 are integrally designed. The electrical stimulator nodes 104 and 105 are in a two-node working mode, wherein the output electrode 108 and the ground electrode 109 are connected by connecting wires. The parameters of the current output by the node can be controlled by the wireless gateway, and the controlled parameters of the stimulator include the waveform, power, action time, switch and so on of the output current. The electrical stimulator node consists of a CPU, a wireless transceiver, an electrical pulse generator, a battery and a skin electrode. The CPU controls the work of the wireless transceiver and the electrical pulse generator. The wireless transceiver is used to receive wireless control signals sent by the wireless gateway. The battery is The entire electrical stimulator node provides electrical energy, the electrical pulse generator outputs waveform signals with specific parameters, and its output end is connected to the skin electrode for applying current to the human body.

As shown in FIG. 2 , the skin electrode includes an output electrode 201 and two ground electrodes 202 and 203 . The selection of two of the ground electrodes is controlled by switches 204,205. When the switch 204 is turned on, the output electrode 201 and the grounding electrode 202 form a skin electrode, and the grounding electrode 203 is suspended in the air and does not play a role on the human body; when the switch 205 is turned on, the output electrode 201 and the grounding electrode 203 form a skin electrode, and the grounding electrode 202 Hanging in the air, it has no effect on the human body.

The electrical stimulator node includes two working modes, single-node and dual-node working modes. The single-node working mode outputs pre-modulated intermediate-frequency electric pulses, and the dual-node working mode is that two nodes cooperate with each other, and each node outputs a non-modulated, continuous intermediate-frequency electric pulse.

As shown in Figure 3, the current waveform output by the single-node operating mode has a carrier frequency of intermediate frequency 301 and a value range of 1-100kHz, and a modulation frequency of low-frequency frequency 302 and a value range of 1-200Hz. The intermediate frequency is used as the carrier frequency, which improves the penetration of the current to human tissue, and the modulation frequency is a low frequency frequency, which satisfies the low frequency response characteristics of nerve cells. The target stimulation area is the area of human tissue near the output electrode and the selected ground electrode.

As shown in Figure 4, the current waveform output by the dual-node working mode includes two electrical stimulator nodes. The output current waveforms 401 and 402 of the two electrical stimulator nodes are both continuous intermediate frequency sinusoidal currents, and the difference between the carrier frequencies of the two currents 401 and 402 is low frequency, and the low frequency range is 1-200 Hz. The two sinusoidal currents are superimposed in the target stimulation area in the body to form a low-frequency modulated intermediate-frequency current 403 .

The two-node working mode can be divided into fixed and scanning working modes according to the mode of the intermediate frequency electric pulse output power: the fixed working mode is that the output power of the two nodes is fixed, and the target stimulation area is static; the scanning working mode is The output power of the two nodes is adjusted in opposite directions, and the output power of the two nodes is not equal, but the sum is equal. By adjusting the output power of the two nodes respectively, the position of the target stimulation area can be adjusted, and the position of the target stimulation area continuously moves along the human cross-section parallel to the skin surface where the two nodes are located.

As shown in FIG. 5 , in the fixed working mode of the dual-node working mode, the electrodes of the two electrical stimulator nodes 501 and 502 are arranged in a cross-arrangement manner, and their respective output powers are fixed. The geometric center 503 formed by the two stimulator nodes is the target stimulation area.

As shown in FIG. 6 , in the fixed working mode of the dual-node working mode, the electrodes of the two electrical stimulator nodes 601 and 602 are arranged in parallel, and their respective output powers are fixed. The geometric center 603 formed by the two stimulator nodes is the target stimulation area.

As shown in FIG. 7 , in the scanning working mode of the dual-node working mode, the electrodes of the two electrical stimulator nodes 701 and 702 are arranged in a cross-arrangement, the respective output powers gradually change, and the output powers of the two nodes are in opposite directions. Regulation (eg one node output power goes up and another node goes down). By adjusting the output power of the electrical stimulator nodes 701 and 702, the target stimulation area can be adjusted arbitrarily to change according to a certain law. The rules follow the following rules: when the output power of the electrical stimulator node 701 is greater than the output power of the electrical stimulator node 702, the target stimulation area 703 is the side close to the smaller output power; when the output power of the electrical stimulator node 701 Less than the output power of the electrical stimulator node 702, the target stimulation area 704 is the side closer to the smaller output power.

As shown in Figure 8, the booster amplifier circuit of the electrical stimulator node adopts a triode push-pull amplifier circuit, which is composed of four complementary triodes SMBTA92 and SMBTA93. The low-amplitude analog signal output by the single-chip microcomputer is amplified and output, and the amplified output The current can reach ±20V.

The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of implementation of the present invention. Therefore, any changes made according to the shape and principle of the present invention should be included within the protection scope of the present invention.

Claims (3)

1. a wearable multi-mode wireless neural stimulation system is characterized in that: the system is made up of a wireless gateway and a plurality of wearable electrical stimulator nodes, and each node is configured and controlled by the wireless gateway; each electrical stimulator The output current waveform, amplitude, action time and working mode parameters of the node are all controlled by wireless communication signals. The output current waveform of each electrical stimulator node acts on the human body through the skin electrode; the skin electrode includes the output electrode and the ground electrode, which are isolated from each other. There are two ground electrodes, one is connected to the output electrode through a lead wire, and the other is integrated with the output electrode, wherein the selection of the two ground electrodes is determined by one Independent switch control; The electrical stimulator node has two working modes: a single node and a double node: the single node working mode is that a single node independently outputs pre-modulated intermediate frequency electrical pulses, and the modulation frequency range is 1-200Hz; the double node working mode It is two nodes cooperate with each other, each node outputs an intermediate frequency electric pulse without modulation, and the frequency difference between the output electric pulses of the two nodes is in the range of 1-200Hz; The two-node working mode is divided into two working modes: fixed and scanning according to the mode of intermediate frequency electrical pulse output power: the fixed working mode is that the output power of the two nodes is fixed, and the target stimulation area is static; the scanning working mode The output power of the two nodes is adjusted in opposite directions, that is, the output power of one node increases and the output power of the other node decreases, and the target stimulation area continuously moves along the cross-section of the human body parallel to the skin surface where the two nodes are located. 2 . The wearable multi-mode wireless nerve stimulation system according to claim 1 , wherein the electrical stimulator node outputs an intermediate frequency electrical pulse signal with adjustable power to the human body through the skin electrode, which can stimulate the inside of the human body. 3 . Deep nerve, its frequency range is 1k-100kHz. 3. A wearable multi-mode wireless nerve stimulation system according to claim 1, wherein the electrical stimulator node is composed of a CPU, a wireless transceiver, an electrical pulse generator, a battery and a skin electrode, and the The CPU is used to control the work of the wireless transceiver and the electrical pulse generator, the wireless transceiver is used to receive the wireless control signal sent by the wireless gateway, the battery provides power for the entire electrical stimulator node, and the electrical pulse generator outputs a specific output. The waveform signal of the parameter, the output of which is connected to the skin electrode, is used to apply current to the human body.

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