CN1023970C - Myopia treating machine - Google Patents

Abstract

The present invention relates to a therapeutic machine for myopia, which is characterized in that a medium-frequency modulation circuit modulated by low-frequency impulses is used on the basis of the existing low-frequency therapeutic machine for myopia; thus, modulation waveform treatment current which does not have stimulation to skin is generated to enable a patient to feel comfort during treatment, and unexpected good effects are therapeutically generated.

Description

Myopia treating machine

The present invention relates to a kind of myopia treating machine, especially relate to a kind of therapy apparatus that adopts electronic technology that pseudomyopia is treated.

The current people who suffers from pseudomyopia (being acquired myopia) in teenager is a lot.In certain areas, its sickness rate is up to more than 60 percent.The teenager of suffering from pseudomyopia is subjected to the different influence of degree in study, life and work, and many patients because can not get in time and effectively treatment constitute lifelong invalidly, this problem is suddenly to be solved, and has received increasing attention.

The present invention is exactly a kind of myopia treating machine that combines with modern electronic technology and make according to tcm theory.

In the past the someone attempt to adopt the sharp thorn method of electronic acupoint to treat pseudomyopia.Chinese patent bulletin CN2065489.U(1990 November 4) utility model discloses a kind of electronics control instrument for the treatment of pseudomyopia.It is that the crucial acupuncture point of having adopted the low-frequency electronic pulse electric current to improve ocular blood circulation exciting face and shank is removed eyes muscular fatigue and contracture and realized treating.But this therapeutic instrument still all has its weak point in the use on effect.On the one hand, because what this class machine used is simple low-frequency pulse (frequency is 3-12HZ), thereby when electrode and contact skin, because low-frequency current is for the distinctive strong impulse effect of human body, can make by the treatment people sensation that does not accommodate the calcination twinge is arranged, especially be relatively more delicate situation for skin of face, this sensation is particularly strong, on the other hand, because low-frequency current is subjected to skin resistance bigger, so be difficult for having degree of depth effect, often will strengthen current amplitude to satisfy the requirement of the treatment degree of depth.Yet electric current is big more, and is intense strong to the thorn of skin, to cause the bright trace that stays treatment on the patient skin, makes patient's spirit and animally produces misery and frightened, often is difficult for adhering to treatment thereby influences therapeutic effect.

An object of the present invention is to provide a kind of myopia treating machine of employing electronic technology of novelty, it has overcome the shortcoming of above-mentioned existing therapy apparatus.Another object of the present invention provides the myopia treating machine that can export the independent adjustable treatment pulse of multichannel simultaneously, with the needs of the corresponding different sensitivity that adapt to Different Acupoint, to obtain best therapeutic effect.A further object of the present invention is to make the patient who receives treatment that the sensation of safety and comfort be arranged, thereby it is frightened as if reaching to the pain that the patient causes to eliminate existing machine.

The present invention is according to human body skin characteristics and traditional traditional Chinese medical science acupuncture point meridian theory, the low frequency pulse wave of carrying out the treatment function is modulated on intermediate frequency (the being generally 1-10KHZ) carrier wave, like this, utilized on the one hand intermediate frequency carrier to be subjected to skin resistance little and act on far-gone characteristic, import the depths at selected acupuncture point with playing the therapeutical effect low frequency pulse wave degree of depth, avoided low frequency to be subjected to skin resistance simultaneously and the twinge that causes to human epidermal with burn.

Come the present invention is set forth below in conjunction with accompanying drawing.

Fig. 1 is the circuit block diagram of myopia treating machine of the prior art.

Fig. 2 is the circuit block diagram according to myopia treating machine of the present invention.

Fig. 3 is two kinds of output waveforms of prior art medium and low frequency machine.

Fig. 4 is the output waveform of the modulating wave of therapy apparatus according to the present invention.

Fig. 5 is the detailed circuit diagram according to the circuit block diagram of inventive concept of the present invention.

Fig. 6 is a side circuit that can obtain to export modulating wave: power supply modulation type circuit.

Fig. 7 is another side circuit that can obtain to export modulating wave: digital superposition modulated circuit.

Fig. 8 is another actual road that can obtain to export modulating wave: the computer hardware circuit.

Fig. 9 is the circuit block diagram of an embodiment model machine VT91D.

What adopt in the basic circuit of the myopia treating machine of prior art as shown in Figure 1, is that low-frequency pulse is treated.The main circuit that forms this electric current partly includes power supply, low-frequency oscillatory network, power amplification circuit, booster circuit and output circuit.General trapezoidal wave and the square wave dual mode of adopting in treatment, its output waveform as shown in Figure 3.As mentioned above, the resistance that this low-frequency electronic therapy ripple is subjected to skin is very big, can not satisfy the requirement of degree of depth treatment.If the amplitude of pulse is strengthened, though can improve the treatment degree of depth to a certain extent, the stimulation that it causes for people's skin is corresponding to become stronger, so that injures skin and make the patient be difficult to stand and the therapy discontinued of having to.

Fig. 2 is the theory diagram according to the myopia treating machine of employing modulating pulse wave of the present invention.Compared with the prior art, it has increased medium-frequency oscillator and this two parts circuit of manipulator, thereby makes the treatment wave mode of its output compared with the prior art produce variation in essence, i.e. output intermediate frequency amplitude-modulated pulse ripple as shown in Figure 4.Should illustrate that waveform shown in Figure 4 is an exemplary waveforms, its pulse width, the frequency of cycle and carrier wave all can be adjusted according to actual needs.

Come schematic diagram shown in Figure 2 is made a more detailed description below with reference to Fig. 5.With reference to figure 5, wherein IC1, D1, D2, R1, R2, R3, R4 and C1 have constituted burst pulse long period waveform generator, and in power on circuitry in a flash, the voltage that circuit A is ordered is compared with the voltage that B is ordered, and the polarity of determining V01 thus is just or negative.Suppose that it is positive voltage output that result relatively makes V01, then the voltage that this moment, B was ordered is VB=R4/(R3+R4).Hence one can see that, and VA then has electric current I 1 to flow to C1 through D1, R1 less than VB, and capacitor C 1 is recharged.The result of charging increases A point voltage VA.When the A point voltage was elevated to VA ≈ VB, transition will appear in V01, both promptly becomes negative voltage from positive voltage.Have VA greater than V01 this moment, thereby situation about occurring is that capacitor C 1 process R2, O2 discharges formation discharge current I2, B point voltage VB=-R4/R3+R4; When the voltage VA of capacitor C 1 drops near this value, the magnitude of voltage of V01 then from the negative voltage rebound to positive voltage, this has just constituted a low frequency and narrow pulse modulating wave.The selection of sort circuit can be got the different resistances of R1 and R2 easily and constituted the different time constant of electric capacity charge and discharge (t1=R1C1 t2=R2C1), thereby constitutes the high duty ratio of needed output wave.

IC2, R5, R6, R7 and C2 have constituted signal generator of intermediate frequency.Its operation principle is ditto described, and overfrequency is not than the low-frequency pulse producer that is made of IC1 much higher (tens times to tens times).Dutycycle is that 50% output voltage is V02.

T1, R8, R9 and R10 form a manipulator, finish the modulated process of a low frequency signal V01 to an intermediate-freuqncy signal V02.When V01 was output as negative level, by the base stage of R8 control transistor T 1, just transistor T 1 was in the state that ends fully.At this moment, the intermediate-freuqncy signal V02 that is exported by IC2 realizes expiring the in-phase end that IC3 is sent in width of cloth output by R9.When V01 was output as high level, transistor T 1 was in the full state that closes.At this moment, the voltage that transistor collector F is ordered is approximately zero, the voltage that this is almost nil is added to the in-phase end of IC3, making only has certain proportion can deliver to the in-phase end of IC3 from the intermediate-freuqncy signal V02 of IC2 output, this ratio is decided by the resistance of R9 and R10, concrete numerical value is [R10/(R9+R10)] V02, and that export through IC3 is a complete low frequency amplitude-modulated wave V03, and it has the dutycycle that controlled by low frequency wave V01.The entire circuit working stability, reasonable in design, adopt element minimum.

B is the transformation of boosting in Fig. 5, is admitted to the former limit winding of B through the pretreated low frequency modulations ripple of IC4, forms four groups of outputs in four groups of windings at outfan through the mutual inductance effect.These four groups of secondary windings (along separate routes) independently of one another, each group can realize independent adjustable by a potentiometer control.Certainly, in order to be suitable for the needs of a plurality of acupoint therapys, also can increase the number of secondary windings.The benefit of doing like this is, because the output voltage of every group of secondary windings is subjected to the control of the potentiometer that links to each other with this group coil, practical situation that then can this group output electrode contacts with human acupoint when using carries out amplitude adjusted independently, thereby satisfy the human body Different Acupoint for the different practical situation of the sensitivity of electric current, realize the effect of wholistic therapy.

Be to be understood that for the personnel that know electronic technology,, remove outside the employing circuit as shown in Figure 5, can also adopt other modulation circuit to realize in order to obtain required mode chart 4 as Fig. 2.Fig. 6 shows a kind of power supply modulator circuit, and it includes audio oscillator or low frequency signal generator 1, intermediate frequency carrier agitator or signal generator of intermediate frequency 2, manipulator or signal synthesizer 3.The power supply modulation method of transferring goes to control the electric power system in an intermediate-freuqncy signal source with a low frequency signal exactly, so that reach the purpose of the amplitude of control output signal.When low frequency signal source 1 was output as high level, manipulator 3 closed state for full, and the power supply in intermediate-freuqncy signal source is almost nil, thereby its output level is almost nil.When low frequency signal source was output as low level, manipulator ended, and the power supply in intermediate-freuqncy signal source obtains power supply, exported the intermediate wave of certain level.Like this, utilize the output of low frequency signal centering frequency source signal to control, therefore realized the purpose of amplitude modulation.

Fig. 7 shows another kind can adopt the circuit that produces required frequency-modulated wave, numeral superimposed type circuit, in this circuit, comprise audio oscillator 1, intermediate-frequency oscillator 2 and manipulator 3, why be referred to as to call digital superimposed type, be because circuit has adopted the agitator of two different frequencies of digital logic gate formation, and one of them is an audio oscillator, and another is an intermediate-frequency oscillator.The folded mutually frame of the output of two agitators, and obtain needed modulation signal.Regulate the resistance of formation agitator and the parameter value of electric capacity, can obtain the modulated pulse ripple of required different frequency and pulse width.

Fig. 8 shows another circuit block diagram that can be used to produce required amplitude-modulated wave.This circuit has adopted hardware circuitry, and CPU among the figure and memory under program constitute a signal source at this moment, and under preset program control, directly the data code flow of the required modulated wave of output representative after digital-to-analogue conversion, obtains required modulated wave.

Adopt any in above-mentioned several practical circuit, all can constitute the circuit that the modulated pulse signal is provided of myopia treating machine of the present invention.Should be noted that in circuit of the present invention the dutycycle of the modulated wave of output is very big, generally be not less than 1/100 and maximum can reach the parameter of 1/ (270 °) by the regulating circuit element, can realize changing dutycycle.Practice shows to have only the dutycycle when output signal to be within this scope, and treatment just has very good result.

Fig. 9 is the block diagram of the physical circuit of an EXAMPLE V T91D, compares with Fig. 2, has increased charging circuit, step-down rectifier, built-in accumulator and undervoltage alarm circuit in this.This mainly is to consider when using alternating current for the interference that prevents electric network source and purpose easy to carry.The rechargeable battery that uses fills once electricity can use 10 times (each 20 minutes) approximately.Whether undervoltage warning circuit indicates normal running voltage to exist at any time, and to guarantee therapeutic effect, its modulating wave pulse width is 5-10ms, and speed is 50-60 time/minute.

Show that by clinical practice the effect that adopts the embodiment of the invention that the adolescent patient of pseudomyopia is treated is remarkable.Be 0.08 to 0.6 patient by the former vision of the course of disease 1-8 that treated through behind the short term therapy, vision all reaches more than 1.0.Patient does not have uncomfortable sensation in treatment, compares its effect with uniform machines really for unexpected good.This shows, sharp carrier wave modulation method-be that low-frequency pulse modulated medium frequency-myopia treating machine of producing provides the solution of myopia treatment problem, it is a progress in this field, consider the miniature portable characteristic of this machine especially, created condition for universal teen-age pseudomyopia problem.

Claims (6)

1, a kind of myopia treating machine, it includes the low-frequency pulse oscillating circuit, and power amplifier circuit and output circuit is characterized in that it comprises:

The medium-frequency oscillator circuit that is connected with manipulator;

With in, the modulator circuit that is connected of low-frequency oscillatory network;

Be connected the isolation boosting circuit between power amplifier and the output circuit; And step-down rectifying circuit and charging circuit and built-in accumulator and undervoltage warning circuit that electric energy is provided for complete machine.

2, myopia treating machine as claimed in claim 1 is characterized in that, said modulation circuit can be power supply modulation type or digital superimposed type or computer program type.

3, myopia treating machine as claimed in claim 1 is characterized in that, said to be used for synthetic low-frequency pulse oscillator circuit output pulse width be 5-10ms, and speed is 45-60 time/minute.

4, myopia treating machine as claimed in claim 1 is characterized in that, the said frequency that is used for as the intermediate-frequency oscillator circuit output signal of carrier wave is tens times to tens times of used modulation low frequency.

5, myopia treating machine as claimed in claim 1 is characterized in that, include in the said output circuit a plurality of independently, (regulate along separate routes) output pulsed electrode that amplitude is adjustable.

6, myopia treating machine as claimed in claim 4 is characterized in that, said have output duty of ratio scope be between from 1/100 to 1/270.

Images