阅读说明：本技术 一种表面肌电评估诊断及生物反馈电刺激治疗方法 (Surface myoelectricity evaluation diagnosis and biofeedback electrical stimulation treatment method ) 是由 吴长旺 于 2020-06-24 设计创作，主要内容包括：本发明公开了一种表面肌电评估诊断及生物反馈电刺激治疗方法,操作步骤包括：S10)、当MCU模块收到表面肌电信号采集需求,MCU模块发出开关驱动信号,驱动信号电极和参考电极进行表面肌电信号采集；S20)、当MCU模块收到电刺激需求,关闭参考电极开关,发出开关驱动信号,驱动信号电极脱离表面肌电采集模块,与电刺激输出模块连接；MCU模块向电刺激输出模块输出用于控制刺激时序的脉冲信号,通过控制数模转换器的输出控制刺激电流幅度,输出恒流刺激信号后向信号电极输出电刺激信号；本发明同时提高了表面肌电信号的采集质量以及电刺激信号的输出精度,所采用的系统结构成本低且占用体积小,非常适合在实际临床评估诊断和治疗中推广应用。(The invention discloses a surface myoelectricity evaluation diagnosis and biofeedback electrical stimulation treatment method, which comprises the following operation steps: s10), when the MCU module receives the surface electromyogram signal acquisition requirement, the MCU module sends a switch driving signal to drive the signal electrode and the reference electrode to carry out surface electromyogram signal acquisition; s20), when the MCU module receives an electric stimulation requirement, the reference electrode switch is closed, a switch driving signal is sent out, and a driving signal electrode is separated from the surface myoelectricity acquisition module and is connected with the electric stimulation output module; the MCU module outputs a pulse signal for controlling a stimulation time sequence to the electrical stimulation output module, controls the amplitude of stimulation current by controlling the output of the digital-to-analog converter, outputs a constant-current stimulation signal and outputs the electrical stimulation signal to a signal electrode; the invention simultaneously improves the acquisition quality of the surface electromyogram signal and the output precision of the electrical stimulation signal, and the adopted system structure has low cost and small occupied volume, thereby being very suitable for popularization and application in actual clinical assessment diagnosis and treatment.)

1. A surface electromyography evaluation diagnosis and biofeedback electric stimulation treatment method is carried out by adopting a surface electromyography evaluation diagnosis and biofeedback electric stimulation treatment system, the surface electromyography evaluation diagnosis and biofeedback electric stimulation treatment system comprises a control host, a signal electrode and a reference electrode which are powered by a power supply module, the control host comprises an MCU module which is respectively and electrically connected with a surface electromyography acquisition module and an electric stimulation output module, the MCU module is respectively and electrically connected with a human-computer interaction input module and a human-computer interaction output module, the surface electromyography acquisition module and the electric stimulation output module are respectively and electrically connected with the signal electrode through a signal electrode switch of an electrode switching switch module, the signal electrode can be used as a surface electromyography signal acquisition electrode of the surface electromyography acquisition module or an electric stimulation signal electrode of the electric stimulation output module, meanwhile, the reference electrode is electrically connected with the surface myoelectricity acquisition module through a reference electrode switch of the electrode change-over switch module, wherein the method comprises the following operation steps:

s10), when the MCU module receives a surface electromyogram signal acquisition demand sent by the human-computer interaction input module, the MCU module sends a switch driving signal to the electrode switching switch module, the driving signal electrode and the reference electrode carry out surface electromyogram signal acquisition and output a surface electromyogram signal to the surface electromyogram signal acquisition module, and the surface electromyogram signal is amplified, filtered and subjected to analog-to-digital conversion, processed by the MCU module and output to the human-computer interaction output module;

s20), when the MCU module receives an electric stimulation requirement sent by the human-computer interaction input module, the MCU module closes the reference electrode switch, and sends a switch driving signal to the electrode change-over switch module, and the driving signal electrode is separated from the surface myoelectricity acquisition module and is connected with the electric stimulation output module; the MCU module outputs a pulse signal for controlling a stimulation time sequence to the electrical stimulation output module, controls the stimulation current amplitude by controlling the output of the digital-to-analog converter, and outputs a constant-current stimulation signal to the signal electrode through the electrode switching switch module after the electrical stimulation output module outputs the constant-current stimulation signal.

2. The surface electromyography evaluation diagnosis and biofeedback electrical stimulation therapy method according to claim 1, wherein the MCU module is further connected to an electrode connector, the electrode connector is connected to an additional signal electrode, wherein the electrode connector is electrically connected to the electrical stimulation output module for outputting the electrical stimulation signal to the additional signal electrode, and the electrode connector is further provided with an electrode detection module for detecting whether the electrode connector is connected to the additional signal electrode in real time;

when the electrode connector is detected to be connected with the additional signal electrode, electromyographic signal acquisition and electrical stimulation can be carried out on different parts of the human body through the signal electrode and the additional signal electrode respectively;

when the electrode connector is not connected with an additional signal electrode, the signal electrode switch comprises a myoelectricity acquisition signal electrode switch and an electrical stimulation signal electrode switch, and the myoelectricity acquisition signal electrode switch and the electrical stimulation signal electrode switch are selectively switched on and off by the MCU module, so that the signal electrode is selectively used as a surface myoelectricity signal acquisition electrode of the surface myoelectricity acquisition module or an electrical stimulation signal electrode of the electrical stimulation output module.

3. The surface electromyography evaluation, diagnosis and biofeedback electrical stimulation therapy method according to claim 1 or 2, wherein the surface electromyography acquisition module comprises a preamplifier, an analog filter and an analog-to-digital converter which are electrically connected in sequence, wherein the preamplifier is electrically connected with the electrode change-over switch module, and an output end of the analog-to-digital converter is connected to the MCU module; and a digital filter is arranged between the analog-to-digital converter and the MCU module, and the digital filter is used for performing digital filtering processing on the surface myoelectric signals and then accessing the MCU module.

4. The surface electromyography evaluation, diagnosis and biofeedback electrical stimulation therapy method of claim 3, wherein a main amplifier is disposed between the preamplifier and the analog-to-digital converter for further amplifying the electromyography signals.

5. The surface electromyography evaluation, diagnosis and biofeedback electrical stimulation therapy method of claim 4, wherein the preamplifier is connected to the MCU module through a signal generation module, and the signal generation module is controlled by the MCU module to generate waveforms required for calibrating the amplifier and the analog filter.

6. The surface electromyography evaluation diagnosis and biofeedback electrical stimulation therapy method according to claim 1, further comprising an upper computer, wherein the upper computer is connected with the MCU module through a wired or wireless communication module, and stores, processes and displays signals sent by the MCU module to generate a report; the control host, the signal electrode and the reference electrode form a single lower computer, and the upper computer is electrically connected with the MCU modules of 1 or more lower computers through a wired or wireless communication module and is used for controlling 1 or more lower computers.

7. The surface electromyography evaluation, diagnosis and biofeedback electrical stimulation therapy method according to claim 2, wherein the electrical stimulation output module comprises a high voltage generation circuit and a constant current stimulation signal generation circuit; the high-voltage generating circuit is used for supplying power to the constant-current stimulation signal generating circuit; the constant-current stimulation signal generating circuit is used for outputting a constant-current stimulation signal, the current amplitude of the output constant-current stimulation signal is output and controlled by a digital-to-analog converter controlled by an MCU, and the stimulation time sequence of the stimulation signal generating circuit is controlled by a pulse signal output by an MCU module and used for improving the accuracy of the stimulation signal.

8. The surface electromyography evaluation, diagnosis and biofeedback electrical stimulation therapy method according to claim 7, wherein an output terminal of the constant current stimulation signal generation circuit is electrically connected with the signal electrode through an electrical stimulation signal electrode switch K3, K4, and an output terminal of the surface electromyography acquisition module is electrically connected with the signal electrode through an electromyography acquisition signal electrode switch K1, K2; wherein, K1 and K3 adopt a first single-pole double-throw switch; meanwhile, K2 and K4 adopt a second single-pole double-throw switch;

when in electric stimulation, the MCU module controls the electric stimulation signal electrode switches K3 and K4 to be closed, and the myoelectricity acquisition signal electrode switches K1 and K2 to be disconnected;

when surface electromyogram signal acquisition is carried out, the electromyogram acquisition signal electrode switches K1 and K2 are controlled to be closed through the MCU module, and the electrical stimulation signal electrode switches K3 and K4 are switched off.

9. The surface electromyography evaluation diagnosis and biofeedback electrical stimulation therapy method according to claim 1 or 2, wherein the power module employs a rechargeable battery, and the electrode switching module employs a relay.

10. The surface myoelectricity evaluation diagnosis and biofeedback electric stimulation treatment method according to claim 1 or 7, wherein the electric stimulation output module includes an electric stimulation MCU unit, and the electric stimulation MCU unit is controlled by the MCU module and is used for reducing the workload of the MCU module.

Technical Field

The invention belongs to the field of biomedicine, and particularly relates to a surface myoelectricity evaluation diagnosis and biofeedback electrical stimulation treatment method.

Background

The surface electromyography evaluation and diagnosis technology carries out non-invasive detection on electromyography signals on the body surface and carries out evaluation and diagnosis on the neuromuscular function according to the detected electromyography signals; the biofeedback electric stimulation treatment technology combines a surface electromyography biofeedback technology with an electric stimulation method, judges detected surface electromyography signals, and electrically stimulates muscles according to a preset algorithm so as to realize feedback and promote the recovery of neuromuscular functions. The surface electromyography evaluation and diagnosis technology has important practical value in the fields of clinical medicine, human-computer efficiency, rehabilitation medicine, sports science and the like; the biofeedback electrical stimulation treatment technology is widely applied to rehabilitation of the neuromuscular system.

As described in the background of the invention patent with publication number CN103300853A, the existing instruments and devices have single function, and can only finish myoelectric collection and evaluation or biofeedback electrical stimulation treatment function alone, which not only increases the purchase cost of the instruments, but also can not make the collected data index effectively combine with treatment and guide the setting of electrical stimulation parameters because the diagnosis and treatment processes are relatively independent; in order to solve the problem, the invention patent of CN103300853A discloses a diagnosis and treatment system based on surface electromyography, which comprises an upper computer acquisition module, an upper computer evaluation module, an upper computer cyclic electrical stimulation output module, an upper computer biofeedback electrical stimulation output module, a communication module, a digital processing controller, a multi-channel surface electromyography electrode, a multi-channel amplification filtering module (including a preamplifier), an analog-to-digital converter, a digital-to-analog converter, a multi-channel power amplification module (including a transformer booster circuit) and an output current-limiting monitoring module; meanwhile, the functions of collecting, diagnosing and evaluating surface electromyographic signals, circulating electrical stimulation, biofeedback electrical stimulation and the like are realized; however, this solution has mainly the following drawbacks:

firstly, a stimulation sequence is generated by depending on a digital-to-analog converter, and meanwhile, a special multi-channel power amplification module and an output current-limiting monitoring module are arranged for realizing the amplification of a stimulation signal and the current monitoring, so that the error is large, the occupied volume is large, the cost is high, and the output range is small;

and secondly, the surface electromyographic electrode is simultaneously connected to the electrical stimulation output module and the surface electromyographic amplification and filtering module without isolation, so that the input impedance of the surface electromyographic amplification and filtering module is low, the performance is reduced, the signal-to-noise ratio of the surface electromyographic signal is reduced, the requirement of preprocessing the skin contacted by the electrode to reduce the skin impedance is improved, the signal quality is reduced, and the use is inconvenient.

The problems cause great difficulty in practical popularization and application in clinic. Therefore, the applicant hopes to develop a novel surface myoelectricity evaluation diagnosis and biofeedback electrical stimulation treatment method to solve the above problems.

Disclosure of Invention

In view of the above, the present invention provides a surface electromyogram evaluation diagnosis and biofeedback electrical stimulation treatment method, which improves the acquisition quality of the surface electromyogram signal and the output accuracy of the electrical stimulation signal, and the adopted system structure has low cost and small occupied volume, and is very suitable for popularization and application in actual clinical evaluation diagnosis and treatment.

The technical scheme adopted by the invention is as follows:

a surface electromyography evaluation diagnosis and biofeedback electrical stimulation treatment method is carried out by adopting a surface electromyography evaluation diagnosis and biofeedback electrical stimulation treatment system, the surface electromyography evaluation diagnosis and biofeedback electrical stimulation treatment system comprises a control host, a signal electrode and a reference electrode which are powered by a power supply module, the control host comprises an MCU module which is respectively and electrically connected with a surface electromyography acquisition module and an electrical stimulation output module, the MCU module is respectively and electrically connected with a human-computer interaction input module and a human-computer interaction output module, the surface electromyography acquisition module and the electrical stimulation output module are respectively and electrically connected with the signal electrode through a signal electrode switch of an electrode switching switch module, the signal electrode can be used as a surface electromyography signal acquisition electrode of the surface electromyography acquisition module or an electrical stimulation signal electrode of the electrical stimulation output module, and the reference electrode is electrically connected with the surface electromyography acquisition module through a reference electrode switch, wherein the method comprises the following operation steps:

s10), when the MCU module receives a surface electromyogram signal acquisition demand sent by the human-computer interaction input module, the MCU module sends a switch driving signal to the electrode switching switch module, the driving signal electrode and the reference electrode carry out surface electromyogram signal acquisition and output a surface electromyogram signal to the surface electromyogram signal acquisition module, and the surface electromyogram signal is amplified, filtered and subjected to analog-to-digital conversion, processed by the MCU module and output to the human-computer interaction output module;

s20), when the MCU module receives an electric stimulation requirement sent by the human-computer interaction input module, the MCU module closes the reference electrode switch, and sends a switch driving signal to the electrode change-over switch module, and the driving signal electrode is separated from the surface myoelectricity acquisition module and is connected with the electric stimulation output module; the MCU module outputs a pulse signal for controlling a stimulation time sequence to the electrical stimulation output module, controls the stimulation current amplitude by controlling the output of the digital-to-analog converter, and outputs a constant-current stimulation signal to the signal electrode through the electrode switching switch module after the electrical stimulation output module outputs the constant-current stimulation signal.

Preferably, the MCU module is further connected with an electrode connector, the electrode connector is connected with an additional signal electrode, wherein the electrode connector is electrically connected with the electrical stimulation output module and is used for outputting the electrical stimulation signal to the additional signal electrode, and the electrode connector is further provided with an electrode detection module for detecting whether the electrode connector is connected with the additional signal electrode in real time;

when the electrode connector is detected to be connected with the additional signal electrode, electromyographic signal acquisition and electrical stimulation can be carried out on different parts of the human body through the signal electrode and the additional signal electrode respectively;

when the electrode connector is not connected with an additional signal electrode, the signal electrode switch comprises a myoelectricity acquisition signal electrode switch and an electrical stimulation signal electrode switch, and the myoelectricity acquisition signal electrode switch and the electrical stimulation signal electrode switch are selectively switched on and off by the MCU module, so that the signal electrode is selectively used as a surface myoelectricity signal acquisition electrode of the surface myoelectricity acquisition module or an electrical stimulation signal electrode of the electrical stimulation output module.

Preferably, the surface myoelectricity acquisition module comprises a preamplifier, an analog filter and an analog-to-digital converter which are electrically connected in sequence, wherein the preamplifier is electrically connected with the electrode change-over switch module, and the output end of the analog-to-digital converter is connected to the MCU module.

Preferably, a digital filter is arranged between the analog-to-digital converter and the MCU module, and the digital filter is used for performing digital filtering processing on the surface myoelectric signal and then accessing the surface myoelectric signal to the MCU module; the analog-to-digital converter does not need to be provided with a booster circuit, so that the signal acquisition error is reduced, the circuit structure is simplified, and the cost is reduced.

Preferably, a main amplifier is arranged between the preamplifier and the analog-to-digital converter and used for further amplifying the myoelectric acquisition signal.

Preferably, the preamplifier is connected with the MCU module through a signal generation module, and the signal generation module is controlled by the MCU module to generate waveforms required for calibrating the amplifier and the analog filter; the signal generation module is internally provided with a switch K5 electrically connected with the input end of the preamplifier; when in calibration, the switch K5 is closed, the calibration waveform is input to the preamplifier, and the K1 and the K2 are opened at the same time, so that the input end of the preamplifier is disconnected from the signal electrode; when not calibrated, switch K5 is open; the invention can greatly reduce the manual calibration work before leaving factory (generally requiring 1 day time, calibrating amplifier gain, frequency response and the like) by the automatic calibration function realized by the signal generating module, and can carry out automatic calibration every time when the device is started up in use, thereby avoiding long time, inaccurate calibration before leaving factory, influence on the performance of the device or need to be sent back to the factory for recalibration.

Preferably, the system also comprises an upper computer, wherein the upper computer is connected with the MCU module through a wired or wireless communication module, and is used for storing, processing and displaying signals sent by the MCU module to generate a report; the control host, the signal electrode and the reference electrode form a single lower computer, and the upper computer is electrically connected with the MCU modules of 1 or more lower computers through a wired or wireless communication module and is used for controlling 1 or more lower computers.

Preferably, the electrical stimulation output module comprises a high voltage generating circuit and a constant current stimulation signal generating circuit; the high-voltage generating circuit is used for supplying power to the constant-current stimulation signal generating circuit; the constant-current stimulation signal generating circuit is used for outputting a constant-current stimulation signal, the current amplitude of the output constant-current stimulation signal is output and controlled by a digital-to-analog converter controlled by an MCU, and the stimulation time sequence of the stimulation signal generating circuit is controlled by a pulse signal output by an MCU module and used for improving the accuracy of the stimulation signal.

Preferably, the output end of the constant-current stimulation signal generating circuit is electrically connected with the signal electrode through an electrical stimulation signal electrode switch K3, K4, and the output end of the surface myoelectricity acquisition module is electrically connected with the signal electrode through a myoelectricity acquisition signal electrode switch K1, K2; wherein, K1 and K3 adopt a first single-pole double-throw switch; meanwhile, K2 and K4 adopt a second single-pole double-throw switch;

when in electric stimulation, the MCU module controls the electric stimulation signal electrode switches K3 and K4 to be closed, and the myoelectricity acquisition signal electrode switches K1 and K2 to be disconnected;

when surface electromyogram signal acquisition is carried out, the electromyogram acquisition signal electrode switches K1 and K2 are controlled to be closed through the MCU module, and the electrical stimulation signal electrode switches K3 and K4 are switched off.

Preferably, the power module adopts a rechargeable battery, and the electrode change-over switch module adopts a relay; the rechargeable battery can effectively reduce the noise of the surface electromyogram signal, and the whole system does not need to be provided with a high-power grid isolation power supply, so that the structural cost of the system is reduced.

Preferably, the electrical stimulation output module comprises an electrical stimulation MCU unit, and the electrical stimulation MCU unit is controlled by the MCU module and is used for reducing the workload of the MCU module.

The surface electromyography acquisition module and the electrical stimulation output module realize the sharing of a signal electrode through the electrode change-over switch module, so that the high input impedance of the surface electromyography acquisition module is reliably ensured, the signal-to-noise ratio of an electromyography signal is further improved, the requirement of preprocessing the skin contacted by the electrode to reduce the skin impedance is lowered, the signal quality is improved, and the use is convenient; meanwhile, the electrical stimulation output module is powered by a high-voltage generating circuit, the stimulation time sequence of the electrical stimulation output module is controlled by a pulse signal output by an MCU module, and the current amplitude is output and controlled by a digital-to-analog converter controlled by the MCU module, so that the current range of constant-current electrical stimulation output is large, the maximum output voltage is large, higher load impedance can be adapted, the accuracy of the output of the stimulation signal can be obviously improved (the amplitude error of the electrical stimulation signal of the diagnosis and treatment system based on the surface electromyogram, which is designed and produced according to CN103300853A, is up to +/-30%), the communication workload of the digital-to-analog converter is reduced, and the electrical stimulation output module does not need to be provided with a special multi-channel power amplification module and an output current-limiting monitoring module, does not need to boost the electrical stimulation signal by.

When the device is actually used, the lower computer and the upper computer can be separately and independently used, so that the operation is convenient and fast; the upper computer can be communicated with a plurality of lower computers at the same time, so that the function of evaluating, diagnosing and treating a plurality of parts and/or a plurality of people at the same time is realized, the use efficiency is high, and the function is strong; moreover, the invention adopts a special digital filter of the surface electromyogram acquisition module, avoids integrating the functions of the digital filter and the MCU, avoids the digital processing controller in CN103300853A not only needing to carry out digital filtering but also needing to process a signal acquisition instruction and a stimulation instruction, can further improve the performance of the invention, and specifically comprises the steps of processing more channels, realizing higher surface electromyogram sampling rate, higher surface electromyogram resolution ratio and the like.

Drawings

FIG. 1 is a schematic structural diagram of a system for surface electromyography assessment diagnosis and biofeedback electrical stimulation therapy in example 1 of the present invention;

FIG. 2 is a schematic structural diagram of a lower surface myoelectricity collection module according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of an electrical stimulation output module according to an embodiment of the present invention;

FIG. 4 is a block diagram of the steps of a surface electromyography evaluation diagnosis and biofeedback electrical stimulation therapy method according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a system for surface electromyography assessment diagnosis and biofeedback electrical stimulation therapy in example 2 of the present invention;

fig. 6 is a schematic structural diagram of a system for surface electromyography assessment diagnosis and biofeedback electrical stimulation therapy in embodiment 3 of the present invention.

Detailed Description

The embodiment of the invention discloses a surface electromyography evaluation diagnosis and biofeedback electric stimulation treatment method, which is carried out by adopting a surface electromyography evaluation diagnosis and biofeedback electric stimulation treatment system, the surface electromyography evaluation diagnosis and biofeedback electric stimulation treatment system comprises a control host, a signal electrode and a reference electrode, the control host comprises an MCU module, the MCU module is respectively and electrically connected with a surface electromyography acquisition module and an electric stimulation output module, the MCU module is respectively and electrically connected with a human-computer interaction input module and a human-computer interaction output module, the surface electromyography acquisition module and the electric stimulation output module are respectively and electrically connected with the signal electrode through a signal electrode switch of an electrode switching switch module, the signal electrode can be used as a surface electromyography signal acquisition electrode of the surface electromyography acquisition module or an electric stimulation signal electrode of the electric stimulation output module, and the reference electrode is electrically connected with the surface electromyography acquisition module through the, the method comprises the following operation steps: s10), when the MCU module receives a surface electromyogram signal acquisition demand sent by the human-computer interaction input module, the MCU module sends a switch driving signal to the electrode switching switch module, the driving signal electrode and the reference electrode carry out surface electromyogram signal acquisition and output a surface electromyogram signal to the surface electromyogram acquisition module, and the surface electromyogram signal is amplified, filtered and subjected to analog-to-digital conversion, processed by the MCU module and output to the human-computer interaction output module; s20), when the MCU module receives an electric stimulation requirement sent by the human-computer interaction input module, the MCU module closes the reference electrode switch, and sends a switch driving signal to the electrode change-over switch module, and the driving signal electrode is separated from the surface myoelectricity acquisition module and is connected with the electric stimulation output module; the MCU module outputs a pulse signal for controlling a stimulation time sequence to the electrical stimulation output module, controls the stimulation current amplitude by controlling the output of the digital-to-analog converter, and outputs an electrical stimulation signal to the signal electrode through the electrode switching switch module after outputting a constant-current stimulation signal by the electrical stimulation output module.

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.