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Electric stimulation having portable self-adapted function and the electric stimulation method

An electrical stimulation, portable technology, applied in artificial respiration, physical therapy, etc., can solve the problems of many parameters, no real-time adjustment of stimulation parameters, inconvenience for disabled patients, etc., and achieve the effect of improving accuracy

Inactive Publication Date: 2007-09-26
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the control of this system only realizes the adjustment of the control mode, and does not realize the real-time adjustment of the stimulation parameters. It is essentially an open-loop control stimulation technology; in addition, the adjustment and setting of the stimulation parameters are also realized by PDA or computer, which is very important for Extremely Inconvenient for Disabled Patients
At the same time, the current FES system uses the method of simultaneously adjusting the stimulation current, voltage and pulse width to change the stimulation intensity, which has many parameters and is inconvenient to adjust.

Method used

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  • Electric stimulation having portable self-adapted function and the electric stimulation method
  • Electric stimulation having portable self-adapted function and the electric stimulation method
  • Electric stimulation having portable self-adapted function and the electric stimulation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] For patients under the guidance of professionals, rehabilitation can be carried out in the way provided by working mode 1. According to the actual situation of the patient, through the parameter adjustment function provided by the portable FES host, the professional can adjust the stimulation frequency, stimulation intensity and continuous working time in a targeted manner to guide the patient's rehabilitation treatment process. Since rehabilitation treatment is a process of gradual recovery of function, patients do not have to receive guided treatment in the rehabilitation center all the time, so the stimulation parameters of each patient visit can be directly saved to the portable FES host by professionals, so that the patient can go home conveniently. rehabilitation treatment. In addition, when patients undergo recovery treatment at home, they can also adjust the stimulation parameters in a small range according to their actual conditions and save them. In this way,...

Embodiment 2

[0041] For patients who cannot obtain professional guidance, or patients whose professional guidance interval is long, this system provides a simple rehabilitation treatment working mode 2. The most basic configuration for working in this mode is: a portable FES host, stimulating electrodes, and an angle sensor. The workflow is shown in Figure 7.

[0042] In this embodiment, after the system determines the stimulation parameters, it can work in the following two ways: 1. As in the regular automatic stimulation training in Embodiment 1, the role of the angle sensor is only to initially determine the stimulation parameters during work; 2. Rehabilitation During the training process, according to the feedback signal of the angle sensor, simply judge the degree of muscle fatigue and adjust the stimulation parameters in real time. If the muscles are tired, the continuous working time of the system can be shortened.

Embodiment 3

[0044] This embodiment is a solution for implementing the third working mode above. The basic configuration required for the work is the same as that of Embodiment 2, namely: a portable FES host, stimulating electrodes and an angle sensor. The workflow is shown in Figure 8.

[0045] In this embodiment, it is first necessary to identify the FES model of the training muscle, which is accomplished by the following method: use stimulation signals of different stimulation intensities to stimulate the training muscle, obtain the relationship curve between the stimulation intensity of the muscle and the movement angle, and realize the offline identification of the FES model .

[0046] In this embodiment, the patient is required to perform higher-level exercise recovery training according to a certain trajectory, so the desired trajectory needs to be input. Two types of trajectory are set in the portable FES host: sinusoidal movement and trapezoidal trajectory. Of course, the expect...

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Abstract

A portable self-adaptive function electric simulate system and relative electric simulate method belong to recovery medical device. The invention comprises a function electric simulate host (001), an electrode group (002), and a sensor group (003), wherein the host (001) comprises a microprocessor, a voltage level converter (006), a power amplifier (008), and a channel select switch (007). The invention provides four electric simulate modes, to be selected. For realizing the parameter adjustment in limited resource, the invention controls the simulate energy, while the energy adjustment only needs to change the width of simulate signal, to simplify the structure. And the invention provides offline and online nerve network recognition technique to build the model of energy and joint angle change, to accurate obtain the time variant character of muscle. The invention improves control accuracy, with simple operation and application in apoplexy or muscle hurt patient.

Description

1. Technical field [0001] The invention relates to a medical device for rehabilitation, which restores limb and hand motor functions of stroke patients through a functional electrical stimulation (Functional Electrical Stimulation, FES) method. Background technique 2. Background technology [0002] Statistics show that the incidence rate of cerebral apoplexy in China is five times that of coronary heart disease, and it has become the second type of disease that causes human death and the first type of disease that causes disability. In 2005, it was predicted that in the next two years in my country, the incidence of stroke would increase by 58%. It is worth noting that 30% of stroke survivors are permanently disabled, and the annual direct treatment costs amount to RMB 26.3 billion. [0003] Stroke patients often suffer from diastolic muscle weakness and involuntary muscle contractions due to flexor spasms. The FES system stimulates the patient's muscle tissue through a ...

Claims

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Application Information

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IPC IPC(8): A61N1/36
Inventor 曹力李睿曹罡郭琪超
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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