CN1088121A - Myoelectric feedback paralysis due to windstroke therapeutic instrument - Google Patents

Abstract

A kind of instrument for the treatment of human body apoplexy quadriplegia, it utilizes the human-body biological electrical effect by three silver chloride electrodes, affected part at human body limb detects the human body electromyographic signal that cranial nerve sends, after the electromyographic signal amplifying circuit amplifies, become high power and stimulate electric pulse, the limbs of the conductive silicon rubber electrode stimulating paralysis by being attached to the human body limb affected part again, limb portion wrist protractor of having paralysed or ankle dorsiflexor, can be along with the frequency extending action of electric stimulation pulse, it has the effect of rebuilding neural channel, instrument is except that having feedback type electric impulse stimulation function, also has circulating electricity irritation, continous way electricity irritation and manual mode electricity irritation function.

Description

Myoelectric feedback paralysis due to windstroke therapeutic instrument

A kind of myoelectric feedback paralysis due to windstroke therapeutic instrument that utilizes the human-body biological electrical effect to make belongs to medical Instrument field.

The electric stimulation therapeutic apparatus of the usefulness of treatment paralysis in the market, it is a kind of simple electric stimulation therapeutic apparatus, it does not have related with people's brain neurological motion, the present invention detects the human body electromyographic signal that the brain neurological motion of human body sends, through amplifying the human body that the back feedback stimulates human body, the effect of rebuilding the human nerve passage is arranged.

The purpose of this invention is to provide a kind of feedback type electric and stimulate the paralysis due to windstroke therapeutic instrument.

Operation principle of the present invention is with the silver chloride telegram 1 on three limbs 6 that are attached to human body paralysis, the electromyographic signal that the human body cranial nerve is sent detects, after the oversampling circuit processing and amplifying, become the high power electric pulse 24 that sets, by being attached to the electric silica gel thin slice 5 on the paralyzed limbs 6, feedback stimulates the paralysis position of human body, make patient's human body with the random extending action of cranial nerve signal, restore funcitons plays the effect of rebuilding the cranial nerve passage, electromyographic signal change-over circuit of the present invention, decapacitation is done can also do circulating work, continous way work and manual method work outside the work of electromyographic signal reaction type, during circulating working method, the period T of electric stimulation pulse 24 is constant, and during the continous way working method, the period T of pulse 24 is infinitely great, during the manually controlled work mode, pulse period T changes with manual control action, and during the work of electromyographic signal reaction type, pulse period T and electromyographic signal are synchronous, all above-mentioned four kinds of working methods, the time T of electric pulse stimulation _OnCan adjust arbitrarily according to patient's concrete condition.

Below be embodiments of the invention:

Accompanying drawing 4 is electromyographic signal amplifying circuits, by the faint electromyographic signal of detecting electrode 1 detected trouble limb, gives by T ₁, T ₂High input impedance, the low noise difference amplifier formed, it has very high common mode rejection ratio, T ₅, T ₆And T ₇, T ₈Forming two pairs of difference amplifiers continues faint electromyographic signal further to be amplified T ₃, T ₄T is provided ₁, T ₂Constant-current source, R ₁₁Regulate preposition amplification, T ₉, T ₁₀As T ₇, T ₈Constant-current source, Ic ₁And T ₇, T ₈Form negative-feedback circuit, it is by regulating T automatically ₉, T ₁₀Electric current finish Ic ₂Make input amplifier in the same way, R ₃₄Regulate its gain, IC ₃Constitute the 50HZ wave trap, it only does sharp-pointed decay to the 50HZ signal, and electromyographic signal is then had higher gain, IC ₃Flow to the myoelectricity change-over circuit, accompanying drawing 5 is electromyographic signal change-over circuit block diagrams, it is by single circuit 14,18 phase inverters 15,22 multivibrators 16,17, mode switch 19,20, NAND gate circuit 21, power amplifier 23 are formed, and electromyographic signal EMG is through single circuit 14 output losing side ripples, and its width and cycle are by the K switch I ₂, the K II ₂Controlling resistance R ₅₈～R ₆₉Realize that as shown in Figure 6, phase inverter 15 is by T ₁₁, T ₁₂Form, it exports positive square wave, for the K switch III ₁Select, multivibrator 16 is by IC ₄Constitute, it exports switching pulse, pulse width T _OnAnd T _OffCan independently adjust, it is by the K switch I ₁, the K II ₁Controlling resistance R ₄₃～R ₅₄Finish the K switch I ₂With the K II ₂Respectively with the K I ₁, the K II ₁, synchronously, guarantee that electromyographic signal and switching pulse are synchronous, switching square wave is through mode switch 19(K III ₃) give NAND gate IC ₁₁, another input of NAND gate is by function switch 20(K III ₂) input, IC ₅Constitute single circuit 18, IC ₇～IC ₁₀Constitute multivibrator 17, the successive narrow square-wave pulse of single circuit 18 outputs, it is with switching square wave input nand gate 21, phase inverter 22, power amplifier 23, and power amplifier is by T ₁₄Constitute with pulse transformer HB, its output high power pulse 24, its period T is by the decision of instrument working method, and high power pulse 24 is placed on the human body 6 via the electric stimulation electrode 5 that electric silica gel constitutes.Mode switch K III ₁, the K III ₂, the K III ₃The three rotates synchronously, and when switch was in the d position, instrument was in electromyographic signal reaction type duty, and promptly the period T of electric stimulation pulse 24 and electromyographic signal are synchronous, at this moment Ic ₄Working power is by T ₁₁Provide, when switch was in a position, instrument was in the periodic duty state, and this moment, the electric stimulation pulse period T was by monostable circuit Ic ₄Decision, when switch was in the b position, instrument was in continuously-running duty, and this moment, the electric stimulation pulse period T be infinitely great, and when switch was in the c position, instrument was in the manually controlled work state, and the electric stimulation pulse period T is by the hands AN that touches the button at this moment ₂Control according to patient's human body situation, can be selected different working methods, and mode switch and manual knob all are contained on the panel of instrument.

Be accompanying drawing of the present invention below:

Accompanying drawing 1 is a block diagram of the present invention;

Accompanying drawing 2 be the present invention at the human body ancon by putting detecting electrode and stimulating electrode sketch map.

Accompanying drawing 3 is that the present invention stimulates ancon wrist protractor action sketch map;

Accompanying drawing 4 is electromyographic signal amplification circuit diagrams of the present invention;

Accompanying drawing 5 is electromyographic signal change-over circuit block diagrams of the present invention;

Accompanying drawing 6 is electromyographic signal change-over circuit circuit diagrams of the present invention.

Advantage of the present invention is, by the feedback type electric impulse stimulation of closed loop, the effect of rebuilding the human body limb neural channel arranged, to because of in wind-induced paralytic good curative effect is arranged, the present invention can also supply the exercise of elderly people limbs, prevent the effect of human body atrophy in addition.

Claims (3)

1, a kind of instrument for the treatment of the human body paralysis due to windstroke, it is characterized in that this instrument utilizes the human-body biological electrical effect, detect the human body electromyographic signal that cranial nerve sends by three silver chloride electrodes 1 at limbs 6 affected parts of human body, through electromyographic signal amplifying circuit 2, electromyographic signal change-over circuit 3, power amplification circuit 4, become the high power pulse via the conductive silicon rubber thin slice 5 that is attached on patient's limbs 1, feedback stimulates patient's limbs, impels patient's limbs can be with cranial nerve signal random movement.

2, by the described instrument of claim 1, it is characterized in that electromyographic signal change-over circuit 3 is by monostable circuit 14,18, phase inverter 15,22 multivibrators 16,17, mode switch 19,20, NAND gate circuit 21, power amplification circuit 23 are formed, the switching pulse of multivibrator 16 outputs, its T _OnAnd T _OffWidth is independent adjustable, and it and the monostable 18 burst pulse strings of exporting are given NAND gate 21 through permutator 19,20 respectively, when the K switch III ₁When being in a, b, c, d, instrument can be in circulating work, continous way work, manual mode work and four kinds of modes of electromyographic signal synchronous mode work, mode switch 19,20 and K switch III respectively ₁Synchronization action.

3, by the described instrument of claim 1, it is characterized in that electromyographic signal amplifying circuit 2 is by T ₁, T ₂Form first order difference amplifier, T ₅, T ₆And T ₇, T ₈Form the back involves two stage differential amplifiers, T ₃, T ₄Be made for T ₁, T ₂Constant-current source, T ₉, T ₁₀Be made for T ₇, T ₈Constant-current source.IC ₁And T ₇, T ₈Form negative-feedback circuit, IC ₃Form the 50HZ wave trap.

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