CN1046636C - Automatic frequency conversion laser therapeutic apparatus for amblyopia - Google Patents

Abstract

The present invention relates to a frequency converting laser amblyopia therapeutic instrument. The present invention is composed of a helium-neon laser generator, a direct current precision adjustable speed motor and a master control circuit arranged in a machine case. A light shading system is arranged in front of light beams emitted by the laser generator; under the control of the master control circuit, a helium-neon laser generator can process frequency converting laser beams with the circulation period of 1 minute through the light shading system, wherein the emission frequency of the frequency converting laser beams stays within three intervals of 15 (+/-)2Hz, 20 (+/-)2Hz and 25 (+/-)2Hz. The present invention has the advantages of convenient operation, favorable curative effect, short course of treatment, and conspicuous curative effect on ocular diseases including amblyopia, myopia, etc.

Description

Automatic frequency conversion laser therapeutic apparatus for amblyopia

The present invention relates to a kind of amblyopia therapeutic equipment, especially automatic frequency conversion laser therapeutic apparatus for amblyopia.

For the no organic disease of eyes itself, still be lower than 0.9 (normally) person and correct defects of vision, be called amblyopia, itself and optical fundus nethike embrane vertebral body cell function, the optic nerve conduction function is relevant with visual center function.Adopt the irradiate light eyes close, use the very strong low frequency frequency conversion light wave of vision response sensitivity, amblyopia, pseudomyopia are all had good therapeutical effect the stimulation that circulates benignly of view nerve with the visual cell sensitive wave length.

Laser has characteristics such as spectroscopic pure, direction are accurate, energy density height, and eyeball has good dioptric system, so the laser therapy amblyopia has certain advantage.The wavelength of He-Ne Lasers is 6328A, be in close proximity to the most responsive wavelength of visual cell (vertebral body cell), activate the visual performance of visual cell easily, the he-ne laser irradiation eye, can produce useful stimulation, photochemical action and warm-heat effect, improve amphiblestroid microcirculation, enhance metabolism, activate the function of visual cell, improve the conducting power of optic nerve, the light wave of different frequency stimulates, and can strengthen the conduction of visual information and increase sign stimulus to brain visual center nerve, makes visual center functional rehabilitation normal.

The purpose of this invention is to provide a kind of employing automatic frequency conversion laser new technique, the diseased region of eyes is implemented the amblyopia therapeutic equipment of frequency conversion laser treatment.

For achieving the above object, the present invention has adopted following technical scheme: by helium neon laser generator, the accurate buncher of direct current and place the main control circuit in the cabinet to form automatic frequency conversion laser therapeutic apparatus for amblyopia, described main control circuit comprises a circulation timing generator circuit, controlled shunt constant pressure source, the speed stabilizing drive circuit, tachometer circuit and power circuit, power circuit provides running voltage for each subsystem, circulation timing sequencer output 15 seconds, 15 seconds, 30 seconds circulation sequential is given controlled shunt constant pressure source, and providing the circulation rotating speed through speed stabilizing drive circuit timesharing circulation to dc speed-regulating motor is 7.5HZ ± 1,10HZ ± 1,12.5HZ ± 1 three kinds of required constant voltages; Be positioned at helium neon laser generator emission light beam the place ahead-2 frequency multiplication dark slides are set, this plate is fixed on the accurate buncher armature spindle of direct current, and rotate by Electric Machine Control, when the motor cycle rotating speed is 7.5HZ ± 1,10HZ ± 1,12.5HZ ± 1, form a diaphragm system that frequency is 15HZ ± 2,20HZ ± 2,25HZ ± 2; It is 15HZ ± 2,20HZ ± 2,25HZ ± 2 that the laser beam that helium neon laser generator sends is processed into frequency through above-mentioned diaphragm system, 1 minute frequency conversion laser light beam of cycle period.

With this frequency conversion laser light beam irradiates eye therapy amblyopia, myopia etc.

Product of the present invention is treated the amblyopia eye, and through clinical verification, cure rate can be up to 98.9%, and also shorten greatly the course of treatment, compares with the technology of existing this illness of treatment, and can shorten to 1/10 the course of treatment.And have no side effect instant effect.

The invention will be further described below in conjunction with accompanying drawing

Fig. 1 is a structural representation of the present invention

Fig. 2 is a helium neon laser generator anterior construction sketch map

Fig. 3 is an operation principle block diagram of the present invention

Fig. 4 is circulation sequential, controlled shunt constant voltage power supply circuit figure

Fig. 5 is tachometer circuit figure

Fig. 6 is low-voltage power circuit figure

Fig. 7 is high-voltage power circuit figure

As shown in Figure 1, cabinet 1 internal fixation is provided with main circuit board, circulation timing sequencer, controlled shunt constant pressure source are housed on the circuit board, the speed stabilizing drive circuit, the electronic devices and components of tachometer circuit, helium neon laser generator 3 is fixed on the cabinet by laser stent 4, helium neon laser generator is existing instrument on the market, select emission He-Ne laser among the present invention, optical maser wavelength is the pure HONGGUANG of 6328A, optical density (hot spot) φ 20mm; The helium neon laser generator of running voltage 1500V, settle the accurate buncher 2 of direct current in the laser generator emitting head outside, in the pipeline that the rotor axis of electric insertion laser generator emission light velocity passes, as shown in Figure 2, the dark slide 10 of-2 frequencys multiplication is fixed in the place ahead at he-ne laser tube, this plate forms diaphragm system by motor 2 driven rotary in the place ahead of laser beam; The front panel of cabinet 1 is provided with on and off switch 5, frequency control switch 6, laser intensity speed-regulating switch 7, and be equipped with an electric current gauge outfit 8.

Operation principle of the present invention is as shown in Figure 3: by power circuit to the circulation timing sequencer, helium neon laser generator provides 5V respectively, the direct-current working volts of 1500V, be controlled shunt constant pressure source, the speed stabilizing drive circuit, the accurate buncher of direct current, tachometer circuit provides the direct-current working volts of 12V, circulation timing sequencer output 15 seconds, 15,30 seconds circulation sequential is given controlled shunt constant pressure source input terminal, between controlled shunt constant pressure source and the accurate buncher of direct current, be connected to the speed stabilizing drive circuit, make the accurate buncher of direct current can obtain rotating speed 7.5HZ ± 1 of circulating, 10HZ ± 1,12.5HZ ± 1 three kinds of required constant voltages, the input of the accurate buncher of the output termination direct current of tachometer circuit, this circuit can be implemented to measure to the rotating speed of dc speed-regulating motor, so that rotating speed of motor places 7.5HZ ± 1 exactly, 10HZ ± 1,12.5HZ under ± 1 the rotating speed.When motor under this rotary speed working state, 2 frequency multiplication dark slides on its armature spindle promptly form the diaphragm system that a frequency is 15HZ ± 2,20HZ ± 2,25HZ ± 2, the permanent ray laser bundle that helium neon laser generator sends is adjusted the circulation change change light light beam of frequency for this reason, remove to shine patient's eye, produce stimulation, strengthen the conduction of visual information.

Fig. 4, Fig. 5, the circuit theory sketch map of Fig. 6 Fig. 7 for being adopted in the embodiment of the invention.

Shown in Fig. 4 frame of broken lines, formed 15 seconds, 15 seconds, 30 seconds cyclic sequential circuit by U1, U2, three one-shot multivibrators of U3 (74123 chip), wherein R1, R2, R3, C1, C2, C3 are the timing devices of sequence circuit, the characteristics of this circuit are, to be that U1 is earlier in running order after powering up, and U2, U3 can only trigger work in turn by U1, and the locking mode of circuit design has guaranteed can only export one tunnel sequential a moment.Work process is: power up back U1 work, and the Q end output 5V high level clock signal of U1, the Q of U1 end places 0 state with U2, U3 simultaneously.After 15 seconds, the U1 power cut-off, its Q end is by the signal triggering U2 work of high step-down, the Q end output 5V high level clock signal of U2, when the Q of U1 end triggers U2, because the delay action of R26, C5 makes that this triggering signal is inoperative to U3, U2 work, its Q end, Q end are locked in U3 under the O state automatically, after 15 seconds, U2 work finished, and triggered U3 work, the clock signal of the Q end output high level of U3 was through 30 seconds, U3 end-of-job, its Q end be by the low signal triggering U1 that uprises task again, is 1 minute circulation thereby form cycle.

Among Fig. 4, audion T3-T8 and supporting resistance thereof, stabilivolt have been formed controlled shunt constant pressure source.The mu balanced circuit that T3, T4 form produces the voltage of 4.92V; The mu balanced circuit that T5, T6 form produces the voltage of 5.85V; The mu balanced circuit that T7, T8 form produces the voltage of 7.03V, this rolling hitch structure is identical, the discrepant slightly circuit of parameter, produce three kinds of precise voltage, under the clock signal effect, timesharing is as the working power of dc speed-regulating motor, and the output voltage of this circuit can be adjusted flexibly according to the voltage-frequency characteristic of motor.

By U5, U6, corresponding 15 seconds, 15 seconds, 30 seconds three sequential of three power switch of U7, three output Q ends of the sequential that promptly circulates generation circuit U 1, U2, U3 are connected on the on-off control terminal 5 of U5, U6, U7 by diode D4, D5, D6 respectively, when first sequential (Q of U1 is effective) is worked, U5 work, it is added in first kind of voltage 4.92V that accurate mu balanced circuit produces on the power input terminal of buncher M by diode D7, make motor produce the rotating speed of 7.5HZ, during U5 work, because the control sequential of U6, U7 is invalid, so U6, U7 do not work.The effect of D4, D5, three diodes of D6 is to isolate sequence circuit and drive circuit.The effect of D7, D8, D9 is to avoid drive circuit to produce combined effect to adjusting motor.

Fig. 5 is disclosed to be the tachometer circuit of selecting for use in the embodiment of the invention, it has adopted photoelectric conversion technique, by T1, T2, operational amplifier U4 (OP07) and support device thereof are formed, it is luminous that audion T1 drives infraluminescence pipe D16, the light that D16 sends is only having the object Shi Caineng that is in the light to reflex to the T2 photosensitive receiving tube, the rotor blade of motor is placed on the luminous light path of D16, the rotation of motor, cause the impeller clearance to be in the light, will obtain the turn signal of motor like this at the colelctor electrode of T2, amplifying the formation amplitude through U4 is the square-wave signal of 12V, this signal is added on the cymometer can measures rotating speed of motor.

Fig. 6 is disclosed to be low-voltage power circuit, is made up of low-voltage circuit and high-tension circuit two parts, and low-voltage circuit forms direct current 12V, two kinds of power supplys of 5V with civil power 220V through transformation, rectification, filtering, voltage stabilizing.Fig. 7 is disclosed to be high-voltage power circuit, it boosts civil power 220V and is the 500V alternating voltage by transformator, again through 3 voltage multiplying rectifiers, filtering, formation 1500V direct-current working volts, working power as helium neon laser generator, in circuit, connect an ammeter, the gauge outfit demonstration is arranged on the cabinet panel, sets the laser intensity of helium neon laser generator by by-pass cock (promptly regulating R25).

During use, turn on the power switch successively, frequency modulation switch, laser intensity adjust switch, gauge outfit shown adjust to about 6mA that the eye of the helium neon laser generator emission laser beam being aimed at the patient carries out laser stimulation.

Claims (2)

1, a kind of automatic frequency conversion laser therapeutic apparatus for amblyopia, by helium neon laser generator, the accurate buncher of direct current and place the main control circuit in the cabinet to form, described main control circuit comprises a circulation timing generator circuit, controlled shunt constant pressure source, the speed stabilizing drive circuit, tachometer circuit and power circuit, it is characterized in that: (a) output of circulation timing sequencer is 15 seconds, 15 seconds, 30 seconds circulation sequential is given controlled shunt constant pressure source, and providing the circulation rotating speed through speed stabilizing drive circuit timesharing circulation to dc speed-regulating motor is 7.5HZ ± 1,10HZ ± 1,12.5HZ ± 1 three kinds of required constant voltages; (b) be positioned at helium neon laser generator emission light beam the place ahead-2 frequency multiplication dark slides are set, this plate is fixed on the accurate buncher armature spindle of direct current, and rotate by Electric Machine Control, when the motor cycle rotating speed is 7.5HZ ± 1,10HZ ± 1,12.5HZ ± 1, form a diaphragm system that frequency is 15HZ ± 2,20HZ ± 2,25HZ ± 2; (c) to be processed into frequency through above-mentioned diaphragm system be 15HZ ± 2,20HZ ± 2,25HZ ± 2 to the laser beam that sends of helium neon laser generator, 1 minute frequency conversion laser light beam of cycle period.

2, automatic frequency conversion laser therapeutic apparatus for amblyopia according to claim 1, it is characterized in that: described circulation timing generator circuit is made up of three one-shot multivibrators (U1, U2, U3) element circuit, its outfan (Q) is connected on the on-off control terminal (5) of power control switching (U5, U6, U7) of controlled shunt constant pressure source by diode (D4, D5, D6) respectively, and power control switching (U5, U6, U7) lead-out terminal (2,3) is connected on the power input terminal of dc speed-regulating motor (M) by diode (D7, D8, D9).

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