CN2031694U

CN2031694U - Variable-frequency electronic apparatus for dispelling pain

Info

Publication number: CN2031694U
Application number: CN 88204236
Authority: CN
Inventors: 王志西
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-04-05
Filing date: 1988-04-05
Publication date: 1989-02-01

Abstract

The utility model discloses a new electric pulse treating device with a particular obvious analgesic effect to the pain caused by various soft tissue damage, neurogenic diseases and acute and chronic arthritis. The utility model adopts a pulse square wave generator of frequency sweeping type, a bidirectional pulse amplifying circuit and an output circuit of variable voltage control to enable the treating electrical pulse to obtain the fundamental waves of middle frequency and low frequency with dynamic changing of frequency parameter. Thus the utility model has rapid and lasting analgesic effect with convenience and practicality.

Description

Variable-frequency electronic apparatus for dispelling pain

This utility model belongs to a kind of medical physiotherapeutic instrument, specifically belongs to the electronic machine that utilizes electric pulse stimulation human body specific part or acupuncture point to reach the rehabilitation effect.

Utilize the excitation of low, intermediate frequency electric pulse, can stimulate the acupuncture point or the position of human body, cause the improvement of local microcirculation, soothing the channels and quicking the network vessels, anti-inflammatory analgetic human tissue cell.All types of low, electro-therapeutic apparatus of intermediate frequency on the basis of this ultimate principle, analgesia apparatus, special-purpose rehabilitation appliances have been widely used in medical profession, especially modern age electronic technology develop rapidly and the continuous excavation of motherland's traditional medical theory, the electronic medical equipment of a new generation just is being subjected to medical worker's attention, as the point electric impulse therapeutic apparatus in the low-frequency range, though the activation of its pair cell is significantly less to the penetration of human body., the appearance of mid-frequency treatment device exists the little problem of therapeutic process moderate stimulation effect though having solved this problem.Adopted the mixing electric pulse technology of low frequency modulations intermediate frequency at present in the electric pulse therapeutic equipment that occurs, quite ideal curative effect has been arranged.Yet because human body has very strong adaptability to the stimulation of a certain frequency, it is not very good that its effective acting time and effect are still felt.

The purpose of this utility model is a kind of novel electric pulse apparatus for dispelling pain of design, and it mainly will solve human body this problem of adaptability to frequency, the electrical impulse frequency parameter of exporting is become dynamic value, thereby improve therapeutic effect greatly.

For solving this problem, this utility model has been taked following design philosophy: add frequency sweep switch 21 in electric pulse generation circuit 2, thereby paired pulses square wave generation circuit 22 applies regulation and control, change its natural mode shape, frequency enlarges therapeutic effect in continuous variation thereby overcome adaptability of human body when making its electric pulse of effectively exporting be applied to human acupoint or position.Generally speaking, electro-pulse stimulator has included following a few part: power supply 1, pulse generator 2, and with impulse wave amplification and rectification circuit 3, output regulating circuitry 4, electrode L1, L2.The improved emphasis of this utility model is the pulse generator part.The clear and definite more pulse square wave circuit of saying that a bit promptly will be improved to general pulse-generator circuit frequency conversion type.Make its pulse frequency of exporting for dynamic.Concrete design concept is such: be provided with before pulse square wave generation circuit and sweep frequency switching circuit 21, output by the frequency sweep on-off circuit adds on the pulse square wave generation circuit 22 as modulation signal, change its natural mode shape, it is changed within the specific limits, thereby realize the output of frequency conversion type pulse square wave.

How further specify the purpose of this utility model with embodiment with reference to the accompanying drawings below realizes.

Fig. 1 is the structured flowchart of common electrical pulsed therapy apparatus.

Fig. 2 is the structured flowchart after this utility model improves.

Fig. 3 is the electrical schematic diagram of single-stage frequency conversion type apparatus for dispelling pain (embodiment 1).

Fig. 4 is the electrical schematic diagram of two-stage frequency conversion formula apparatus for dispelling pain (embodiment 2).

Fig. 5 is the waveform sketch map of each inter-stage in the variable-frequency pulse circuit and square-wave.

In embodiment 1, the frequency sweep on-off circuit is by a chip, 5G1555 and resistance R 1, R2, and the unidirectional square-wave oscillator circuit that capacitor C 1, C2 and diode P1 overlap joint form, its frequency of oscillation can be chosen between 1～3Hz.Be an exportable lasting pulse square wave at pin 3 like this, oscillogram is with reference to (α) among the figure 5.Square wave generation circuit 22 among the embodiment 1 is a unidirectional pulse oscillating circuit equally, and by a 5G1555 and resistance R 3, R4 capacitor C 3, C4, diode P2 overlap joint forms.4,5 feet of different is integrated package are connected with the switching value output pin 3 of frequency sweep switch by regulation and control resistance R 6, R5, and the natural frequency of its oscillating circuit can be chosen between 80～140Hz.The result of Lian Jieing can form the frequency regulation and control of switch output paired pulses circuit and square-wave like this.When on-off circuit is exported with high potential, promptly give capacitor C 4 chargings by resistance R 6, according to the internal structure characteristics of 5G1555 circuit, the result of charging is the numerical value of turnover voltage in the oscillating circuit that constantly raises, thereby makes frequency of oscillation constantly be changed to low by height.The waveform of being exported by the output pin 3 of pulse square wave generation circuit has had the density variation, has promptly exported a variable-frequency pulse square wave.Thereby when becoming the low frequency current potential, switching value causes failure of oscillation owing to resistance R 5 links to each other with integrated circuit 5G15554 foot.Its oscillogram is with reference to (b) among the figure 5.Pulse square wave with frequency conversion is coupled to the signal input part (9 foot) of shaping amplification circuit through resistance R 7, R8 capacitor C 5.Amplifying post processing through shaping is the bi-directional symmetrical pulse square wave, and is keeping the frequency conversion characteristic.This effectively treatment electric pulse by output regulating circuitry (by transformator T1, load potentiometer W1 ammeter

, diode P3 forms) and electrode L1, L2 is applied to the acupuncture point or the specific part of human body, and amplification and rectification circuit specifically can be formed by chip LA4100 overlap joint.

What embodiment 2 was given is further developing of this utility model design.Its main purpose is that the output of frequency conversion electric pulse has been removed outside 80～140Hz low-frequency pulse component, has the intermediate frequency radix of 3500Hz～5500Hz again, thereby improves the effectively quality of treatment pulse, expands its sphere of action.With reference to Fig. 4 as can be seen, the main distinction on the circuit is that square wave generation circuit is become two utmost point FM circuit, promptly comprising two unidirectional pulse circuit, it is outside the low-frequency oscillatory network of 80～140Hz that a frequency of oscillation is arranged, the medium-frequency oscillator circuit that to have added a natural frequency again be 3500～5500Hz as seen from Figure 4, medium-frequency oscillator circuit and relation between the low-frequency oscillatory network are as the relation of preceding described low-frequency pulse generation circuit and frequency sweep on-off circuit, by the pulse output of low-frequency oscillatory network adjustment signal as the medium-frequency oscillator circuit, thereby the variable-frequency pulse square wave that the medium-frequency oscillator circuit is implemented in the intermediate frequency range is exported, have three partial circuits in the variable-frequency pulse circuit and square-wave among the embodiment 2 as can be seen in the comparison diagram 3, before two parts basic the same with circuit among the embodiment 1, more than be one by 5G1555 and resistance R 10, R11 capacitor C 5, the medium-frequency oscillator circuit that C6 diode P3 is overlapped to form.Back the two poles of the earth oscillating circuit in this three part all forms variable-frequency pulse output, its regulation and control all are to rely on the pulse output of previous stage to be added in 4 of 5G1555 by regulation and control resistance (R6, R5 and R8, R9), realize on 5 bipods that this also is one of design feature of the present utility model.By in the circuit analysis of embodiment 2 as can be seen, is transported in the pulse signal of amplification and rectification circuit 3 and contains low frequency first-harmonic and intermediate frequency first-harmonic, and frequency parameter changes.This not only makes this Eradicates pain instrument have than wide range of therapeutic zone and depth of interaction, and will effectively overcome the patient owing to the adaptability of long-time treatment to frequency, this purpose of design of the present utility model just.

Prove by test: the utility model is owing to realized the output of frequency conversion type pulse square wave, its excitant is strong and lasting when regarding for patient acupuncture point and position, can reach rapidly and regulate channels and activate collateral, the effect of blood-activating analgetic, add that the utility model adopts simple and reliable frequency sweep circuit, make the loom cost low, anti-interference performance is strong. For vast middle and small hospital, different medical unit is carried out the rehabilitation outpatient service provides a kind of simple and easy reliable instrument, for the soft tissue damage, and arthralgia in the anxious chronic flesh, the nerve headache, stomach spasm etc. all has obvious curative effect.

Claims

1, a kind of electricity consumption impulse action reaches the physiotherapeutic instruments that analgesia promotes rehabilitation in human acupoint or specific part, by power supply 1, and pulse generator 2, shaping amplification circuit 3, output regulating circuitry 4 and electrode L ₁, L ₂Form, it is characterized in that pulse generator 2 is made up of the circuit that produces the variable-frequency pulse square wave, specifically can be formed, by the switch output modulating pulse square wave generation circuit generation variable-frequency pulse square wave output of frequency sweep switch by frequency sweep on-off circuit 21 and square wave generation circuit 22.

2, according to the said physiotherapeutic instruments of claim 1, it is characterized in that frequency sweep on-off circuit 21 can overlap the unidirectional square-wave oscillator circuit that forms by integrated circuit 5G1555, its frequency of oscillation is 1～3HZ.

3, it is characterized in that according to claim 1 or 2 said physiotherapeutic instrumentss square wave generation circuit 22 is the unidirectional pulse oscillating circuits that form with the 5G1555 overlap joint, its natural mode shape is 80～140Hz, and wherein 4 of 5G1555,5 feet link to each other with the outfan of frequency sweep on-off circuit by regulation and control resistance R 5, R6.

4, according to the said physiotherapeutic instruments of claim 1, it is characterized in that pulse square wave generation circuit 22 comprises two unidirectional pulse oscillating circuits, a low-frequency oscillatory network that is natural mode shape at 80～140Hz, one is that natural mode shape is the intermediate-frequency circuit of 3500～5500Hz, thereby is realized the variable-frequency pulse square wave output of intermediate frequency range as the frequency adjustment signal of intermediate-frequency circuit by the pulse output of low-frequency oscillatory network.

5, according to claim 1 or 2 or 4 said physiotherapeutic instrumentss, low, the medium-frequency oscillator circuit that it is characterized in that pulse square wave-generator 22 is specifically formed by two 5G1555 slice, thin pieces overlap joints, and the pulse output that frequency conversion control relies on prime is by realizing on 4,5 feet of modulating resistance (R5, R6 and R8, R9) and being added in 5G1555.

6, according to the said physiotherapeutic instruments of claim 1, it is characterized in that shaping amplification circuit 3 is formed by integrated circuit LA4100 overlap joint, after amplifying shaping, become the output of bi-directional symmetrical pulse square wave through the input of 9 feet from the frequency conversion unidirectional pulse square wave of square-wave generator outfan.