CN86209440U - Program-controlled low-frequency pulse physiotherapeutic instrument - Google Patents

Abstract

The utility model relates to a program-controlled low-frequency pulse physiotherapeutic instrument, comprising an exponential wave generator, an exponential wave generator, a wave selection circuit, a time programmed control circuit, a timing alarm circuit and a warm therapeutic plate. The physiotherapeutic instrument can send out two kinds of therapeutic pulse of square wave and exponential wave, the pulse, the frequency, the waveform and the wave transformation of the utility model can be controlled automatically, the utility model has timing in therapy time, and the utility model can stop to alarm automatically, forming six therapy conditions and thermotherapy effects. The program-controlled low-frequency pulse physiotherapeutic instrument has stable performance, safe use and convenient maintenance, the utility model is used for treating various diseases with paralysis and pain as main diseases, and the excellent curative effect is obtained.

Description

Program-controlled low-frequency pulse physiotherapeutic instrument

This program control low-frequency pulse therapy instrument belongs to the electrical equipment medical apparatus and instruments.

Employed low frequency pulse therapeutic equipment ubiquity the wave mode dullness in the present domestic physiotherapy equipment, the very fast generation of patient " adaptability ", thereby therapeutic domain is narrow, unsatisfactory curative effect; Exist in addition and manipulate inconvenience, treatment time, break time and can not control automatically, shortcoming such as can not shut down automatically.The program-controlled equipment of external physiotherapeutic instruments is to utilize electronic computer, and manufacturing is complicated, cost is expensive, and present stage still can not promote in China's medical treatment is clinical.

The purpose of this research is to address the above problem, and develops a kind ofly can control treatment time and intermittent time automatically, but regulates converted-wave and the multi-functional program mode low frequency pulse therapeutic equipment device of thermogenetic effect autostop is arranged.

The program control low-frequency pulse therapy instrument of utility model of development is a controlled low-frequency pulse signal generator.This therapeutic instrument is formed (Fig. 1) by self-excited oscillator, square-wave generator, programme-control waveform changing circuit, temporal sequence control circuit, warm plate, timing alarm and power pack.

This utility model physiotherapy table has following characteristics:

1, utilize discrete component makeup time sequence circuit, control impuls is interrupted, continuously output.

2, utilize the alternately exchange cycles of program timer control impuls waveform.

3, utilize resistance wire energising heat production to make the battery lead plate that acts on patient's limbs become warm pole plate.

This utility model physiotherapy table utilize program controlly carry out continuously, disconnected continue, replace etc. automatically the conversion pulse waveform and utilize temperature to rescue plate thermotherapy is combined application simultaneously with low-frequency electrotherapeutic, on physiotherapy equipment, belongs to initiative.In addition, this therapeutic instrument output pulse width, pulse frequency can be regulated (pulse width range 0.2ms～1400ms, frequency-tuning range 0.1HZ～1000HZ) in a big way.

Below this utility model physiotherapy table invention part describes in detail:

1, temporal sequence control circuit (Fig. 2)

This therapeutic instrument temporal sequence control circuit structure is simpler, main constant delay circuit when variable, and transistor switching circuit, relay conversion circuit are formed.Each sequential relay of this circuit progressively moves by the interval of reserving in advance, returns automatically after being all over and reworks.When pressing K switch, the J3 adhesive, winding point is connected C1 and R1, and the last voltage of C1 makes multiple tube BG1 conducting, the J1 adhesive, first step program begins.Be operated in alternately shelves of square wave, exponential wave if treat this moment, then therapeutic instrument output this moment square-wave pulse.When going up voltage J1 after R1, W, multiple tube emitter junction are put into less than certain value, C1 discharges.J1 one winding this moment point is connected C2 and R2, the J2 adhesive, and the second step program begins, then the wave impulse of therapeutic instrument output index.When C2 goes up voltage after R2W and multiple tube emitter junction discharge into less than certain value, J2 discharges the second step EP (end of program), and program begins again simultaneously.So cycling service finishes up to regularly treating.This circuit adjustment W potentiometer (by the control of panel knob) can make regulate control per program work time in step between 30 seconds～10 minutes.According to each patient's treatment needs, per program work time in step can pre-establish, also conversion at any time.

2, exponential wave generator and waveform transformation (Fig. 3)

The exponential wave that this utility model physiotherapy table sends is that the integrating circuit by the square-wave signal effect is produced.Exponential wave generator and Waveform converting device circuit are simple and reliable, are made up of adjustable parallel circuit of scalar product often and relay tip change-over circuit.The gang potentiometer adjusting is adopted in the adjusting of constant in the time of in the adjusting of adopting the square-wave pulse width in this circuit and the integrating circuit.When making the broadening of square-wave pulse width, the time constant of integrating circuit increases synchronously, and the exponential wave wave amplitude is unlikely like this reduces, and flat-top do not occur.Suitably select component values in the circuit, make the exponential wave rising edge ascending time be slightly larger than tailing edge fall time, can be fit to the treatment needs.

Fig. 3 shows, by the variation of sequence circuit repeat circuit J control impuls waveform, two kinds of pulses of exportable square wave of this utility model physiotherapy table and exponential wave can be continuously, interrupted output, can regulate by the panel knob with the time of intermittently exporting.

3, warm battery lead plate

Utilize heating wire to pass through the principle that electric current can produce heat effect, this physiotherapy table is equipped with nichrome wire on the inner liner of output board, and start back contact patient's treatment plate produces 40～50 ℃ thermogenetic effect.This kind warm-heat effect can blood circulation promoting and blood stasis dispelling, expelling wind and cold, improves the blood circulation and the metabolism of affected part, improves curative effect, and patient has warm comfort, the treatment of taking like a shot simultaneously.

4, timing and autostop alarm device

This device is made up of mechanical timer and low frequency blocking oscillator.Timing scope 0～60 minute, timing is to sending the automatic stop pulse output of chirm.

5, astatic multivibrator

This circuit adopts transistor " collection, base " coupling self-excited oscillator, and this oscillator frequency range of accommodation 0.1HZ～1000HZ branch fourth gear realizes that the pulse of generation triggers monostable circuit and produces the adjustable square-wave pulse of pulsewidth after shaping.

Embodiment

Six kinds of treatment conditions of this physical therapy machine (rectangular wave and exponential wave are continuously, intermittently, alternately) are selected arbitrarily according to state of an illness needs.During treatment, the two-plate immersion is placed on acupuncture point, nerve trunk or the paralysis muscle group position of suffering from limb; Two-plate is got opposed method or and is put method.Pulse frequency: the paralysis pathological changes is used 0.2～10HZ, and treatment pain is used 60～100HZ, and each 15～20 minutes, every day 1～2 time, 7 times was a course of treatment.

Therapeutic outcome:

Criterion of therapeutical effect: significantly; Dysfunction has clear improvement, and symptoms such as pain obviously alleviate or disappear; Better: pain relief, function has improvement.Other are invalid.

Therapeutic outcome is seen attached list,

Subordinate list: the observation of curative effect of program control low frequency pulse treatment

Embodiment shows, the program control low-frequency pulse therapy instrument of this utility model be a kind of multifunction medical instrument can by clinical need pulse, frequency, waveform transformation automatically conversion regulate.The function that has electrotherapy and thermotherapy simultaneously, therapeutic domain is wide, therapeutic effect good, but autostop and warning.This machine stable performance, reliable, safe in utilization, easy to maintenance.

Description of drawings

Accompanying drawing 1 program control low-frequency pulse therapy instrument block diagram

Accompanying drawing 2 temporal sequence control circuits

R1,2-discharge and recharge resistance W1,2-adjustable potentiometer J1, J2, J3-relay

K-press button+E-positive source C1,2-capacitor

Accompanying drawing 3 index wave generation circuit and waveform transformation

U1-input square-wave voltage U2-output index wave voltage

U3-output square wave, exponential wave alternate voltages

J-relay tip C-capacitor

Claims (5)

1, a kind of program control low-frequency pulse therapy instrument is characterized in that having astatic multivibrator, temporal sequence control circuit, exponential wave generator and Waveform converting device, warm electrode treatment plate, timing and autostop alarm device.

2, by the described physiotherapy table of claim 1, it is characterized in that the temporal sequence control circuit is made up of discrete component, promptly constant delay circuit, transistor switching circuit, relay conversion circuit are formed when simple, and its program work time-controllable scope is between 30 seconds～10 minutes.

3, by claim 1 or 2 described physiotherapy table, it is characterized in that exponential wave generator and Waveform converting device be made up of adjustable parallel circuit of scalar product often and relay tip change-over circuit, exponential wave is that the integrating circuit by the square-wave signal effect is produced.

4, by the described physiotherapy table of claim 1, it is characterized in that having the warm battery lead plate of forming by the nichrome resistance wire.

5,, it is characterized in that having regularly and the autostop alarm device by one of them described physiotherapy table of claim 1 to 4.

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