CN1101579A

CN1101579A - DC precardia therapeutic instrument

Info

Publication number: CN1101579A
Application number: CN 93115856
Authority: CN
Inventors: 杨继文; 谭兆玉
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-10-14
Filing date: 1993-10-14
Publication date: 1995-04-19

Abstract

The present invention relates to a kind of therapeutic instrument for cardiopathy which uses cells to supply power and passes through inversion boosting, rectifying, filtering, timing and automactically controlling and the constant steady direct current is delivered from the output of the constont current source which is acted on the precardial area. It features integrating the treatment and medicine-guidance into an organic whole, very well automatic control system, accuray timing and portable. It implements the treatment of suddenly coming on heart disease by easy and miniature instrument.

Description

DC precardia therapeutic instrument

The present invention is a kind of therapeutic equipments, especially for the DC precardia therapeutic instrument of treatment heart disease.

At present, the treatment coronary heart disease interventional therapy that normally adopts percutaneous transluminal coronary plasty (PTCA) to serve as theme, but this Therapeutic Method must could adopt in well-appointed hospital, and in time give treatment to and can not get assurance.The various therapeutic equipmentss of Chu Xianing all adopt pulsating current output in the market, do not allow to be used for the treatment of heart disease, and have mains transformer, and patient's psychology is caused certain pressure.Foreign patent document JP 56-11461 " low frequency current for treatment device " adopts pulsating current, and JP56-10070 " help device " is that employing is pneumatic.Treatment had report from the end to domestic and foreign literature to DC precardia.

The object of the present invention is to provide a kind of pareordia that is directly used in, with the output of steady direct current, collection is treated, led medicine is one, and automatic control system is perfect, and timing is accurate, and volume is little, portable Novel DC electricity precardia therapeutic instrument.

Technical solution of the present invention is: comprise that shell, music newspaper ring circuit, cell potential detection and indicating circuit, output electrode is formed unidirectional current heart district therapeutic instrument, it is characterized in that also being provided with inverter output circuit, timing control and automatic switch-over circuit, adjustable constant-flow source follower circuit.

The present invention develops the basis: human body removes blood, lymphsystem, also has the closed electric loop of third circulation system-biology, participates in the metabolism of human body, the generation of disease and treatment.Heart is the vitals of human body, provides electrostimulation ceaselessly, regularly in the thoracic cavity, finishes the effect of pump blood.Electricity and heart, electrostimulation-mechanical contraction coupling and heart are closely bound up, and electric field can change the heart excitement.Therefore correct an amount of the electric power can improve myocardial ischemia, adjusts cardiac rhythm.The present invention treat heart disease be exactly the electric power be that heart rationally charges, reach cardiac function enhancing by an amount of DC current, coronary artery dilating increases blood flow coronarius, improves myocardial ischemia, and special-purpose medicaments can be imported heart.

The present invention is with the battery supply inversion, boost, rectification, be filtered into the output of steady direct current.Be subjected to do all multifactor impacts such as wet, emotion, external environment because of human epidermal resistance, its D.C. resistance is widely different, and along with conduction time is long, human body resistance changes.The present invention adopts particular device and circuit to guarantee therapeutic effect and safety: time timing circuit is after each treatment time arrives, and the music newspaper rings, and cuts off the treatment electric current automatically; Output circuit adopts the adjustable constant-flow source, can guarantee the output of steady direct current from the motion tracking adjustment; Therapeutic electrode accessory power outlet and charging socket adopt dissimilar; During the external charge device, cut off the instrument internal circuit automatically.

When the present invention uses, utilize electrode special to stick and treat, maybe will treat the medicine of heart disease, apply on electrode and medicine is imported heart, reach treatment in time, the purpose of instant effect by DC current in pareordia.

The invention has the advantages that and utilize battery powered that constant direct current output can be directly used in the treatment of heart disease, collecting dc treatment, leading medicine is one, output current is adjustable, and automatic control system is perfect, and timing is accurate, easy to use, treatment is timely, and volume is little, is convenient to carry, make the patient avoid operating misery, invalid patient obtains the effective treatment to make some Drug therapys again.Experiment product YL-2 type electronics of the present invention is rescued to admire in Shenyang medical university and is done zoopery and the above clinical practice of thousand people has been done by Dandong 81244 Army Hospitals.By nitroglycerin slow release pad pasting and this instrument of using at present general treatment heart disease the result of the test that thousand routine cardiacs treat is shown: the total effective rate of this instrument treatment is about 90%, and the total effective rate that pastes the treatment of medicine film is about 60%.

Best solution of the present invention, available the following drawings describes:

Fig. 1 is a block diagram of the present invention;

Fig. 2 is an inverter output electrical schematic diagram;

Fig. 3 is time timing and automatic switchover part electrical schematic diagram;

Fig. 4 is an adjustable constant-flow source output electrical schematic diagram.

Be described in detail the optimum implementation of each several part below in conjunction with accompanying drawing.

Among Fig. 1, inverter output circuit, time timing and automatic switch-over circuit, adjustable constant-flow source follower circuit are inventive point of the present invention, describe in detail in Fig. 2, Fig. 3 and Fig. 4 respectively.

Fig. 2 circuit is by DC-DC converter ic IC ₁, pulse transformer T, set of cells E, K switch, band close socket CK ₁, resistance R ₁, R ₂, R ₃, R ₄, capacitor C ₁, C ₂, C ₃, rectification full-bridge D ₁, commutation diode D ₂, power output end A, B forms.

K is serially connected in E positive terminal and IC ₁Between 6 feet, CK ₁Common terminal is attempted by E positive terminal, CK ₁Belt switch partly is serially connected between E negative pole end and the ground end, and elementary 1,3 ends of T meet IC respectively ₁7 feet, 1 foot,

T level

4,5 termination D ₁End, D are gone in two ends ₁The output negative terminal joins D with the ground end ₁Just be connected to output terminals A, D ₂Be serially connected in IC ₁Between 1 foot and the outfan B.C ₁Be attempted by between output terminals A and the ground end, form one group and stablize the DC voltage output loop; C ₃Be attempted by between outfan B and the ground end, form one group and stablize the DC voltage output loop.

Operation principle: 3.6 ∨～4.5 ∨ dc sources become 16KHz left and right sides pulse current by inverter, boosts through transformator, and rectification, output 70 ∨ dc sources are held to A after the filtering, for therapeutic electrode use, IC ₁1 foot pulse current is exported 11 ∨ dc sources and is held to B after rectification, filtering, be instrument each several part working power.R ₂Be current-limiting resistance, R ₃, R ₄Form output voltage and detect network.

This electric circuit characteristic: cancelled that consumed power in this integrated circuit is big, the inductance element of heating, use pulse transformer instead, when making the input power of circuit reduce to 0.4W(3.6V) by 1.08W, former minimum input voltage 3V reduces to 2.2V, make this circuit supply voltage range wide, output voltage can reach arbitrary value, and this circuit conversion efficient reaches more than 90%.

Fig. 3 circuit is by programmable integrated circuit IC ₂, NPN audion BG ₁Controllable silicon BG ₂, stabilivolt D ₆, resistance R ₅, R ₆, R ₇, R ₈, capacitor C ₅, power output end C forms.

IC ₂1 foot meets R ₅, 2 feet meet C ₅, 3 feet meet R ₆, R ₅, R ₆, C ₅The other end connect together IC ₂5,6,7,9,10 feet also connect the back and join IC with ground end ₂12,13,14 feet and connect the back with power end B join R ₇Be serially connected in IC ₂8 feet and BG ₁Between the base stage, grounded emitter end, colelctor electrode and BG ₂The control utmost point joins R ₈Be attempted by BG ₂On the control utmost point and the anode, D ₆Be serially connected in BG ₂Between the control utmost point and the ground end, anode and power output end A join, and negative electrode is received outfan C, and C forms one group with the ground end and stablizes the DC voltage output loop.

Operation principle: R ₅, R ₆, C ₅With IC ₂1,2,3 foot makeup time timing circuits, IC ₂8 feet, R ₇With BG ₁Form automatic switch-over circuit, R ₈Be BG ₁Load resistance and BG ₂Triggering resistance, and and D ₆Form one group of shunt regulating circuit.During work, IC ₂8 feet are low level, BG ₁End R ₈With D ₆The trigger current control BG that provides ₂Conducting makes it to export 50 ∨ stable dc power supplies, when timing circuit reaches preset time, and IC ₂8 feet output high level, BG ₁Conducting, its colelctor electrode makes BG near 0 current potential ₂Close, cut off the therapeutic electrode power supply.

This electric circuit characteristic: volume is little, and the accuracy of timekeeping height has saved the high capacity electrochemical capacitor that general timing circuit adopts, C ₅Be the microminiature leaded multilayer ceramic capacitor, it is wide to adapt to voltage range, this circuit can be in 8V-12V operate as normal.

Fig. 4 circuit is by NPN audion BG ₃, silicon diode D ₃, D ₄, D ₅, resistance R ₉, R ₁₀, adjustable resistance WR, ammeter mA, current output terminal D, F form.

Resistance R ₉Be serially connected in power output end B and BG ₃Between the base stage, D ₃, D ₄, D ₅After the serial connection, its two ends respectively with BG ₃Base stage and ground end join R ₁₀After WR was connected in series, its two ends were connected on BG respectively ₃Emitter stage and ground end, BG ₃Colelctor electrode is connected to outfan D, and ammeter mA just is being connected to power end C, and its negative terminal is connected to outfan F.Outfan F, D and BG ₃Colelctor electrode, emitter stage, R ₁₀, WR forms one group of constant-current source loop.

Operation principle: R ₉With D ₃, D ₄, D ₅Form a shunt regulating circuit, be BG ₃Base stage provides one 2.1 ∨ steady potential, and during work, D, F end contacts with human epidermal by the electrode special line, and adjustment WR makes it output current and reaches the treatment optimum.When D, F end load resistance variations, its control procedure is as follows:

R _DF: the outfan load resistance, ↓: the expression downward trend, ↑: the expression ascendant trend.

This electric circuit characteristic: wide accommodation, when D, F two ends load resistance change from 0 Ω-50K Ω, all can the accurate tracking adjustment.

This circuit most preferred embodiment is: the stable DC voltage of power output end A output is 70 ∨; The stable DC voltage of outfan B output is 11 ∨; The stable DC voltage of outfan C output is 50 ∨; The output current of outfan D, F is adjustable continuously between 0.2mA～1mA.

Claims

1, a kind of DC precardia therapeutic instrument, comprise that shell, music newspaper ring circuit, cell potential detection and indicating circuit, output electrode, is characterized in that also being provided with inverter output circuit, timing control and automatic switch-over circuit, adjustable constant-flow source follower circuit.

2, DC precardia therapeutic instrument as claimed in claim 1 is characterized in that: the composition of inverter output circuit is: K is serially connected in E positive terminal and IC ₁Between 6 feet, CK ₁Common terminal is attempted by E positive terminal, CK ₁Belt switch partly is serially connected between E negative pole end and the ground end, and elementary 1,3 ends of T are connected on IC respectively ₁7 feet, 1 foot, T level 4,5 termination D ₁Two inputs, D ₁The output negative terminal joins D with the ground end ₁Just be connected to output terminals A, C ₁Be attempted by between output terminals A and the ground, form one group and stablize the DC voltage output loop.

3, DC precardia therapeutic instrument as claimed in claim 1 is characterized in that the composition of timing control and automatic switch-over circuit is: IC ₂1 foot meets R ₅, 2 feet meet C ₅, 3 feet meet R ₆, R ₅, R ₆, C ₅The other end connect together IC ₂5,6,7,9,10 feet and connect the back and join IC with ground end ₂12,13,14 feet and connect the back with power end B join R ₇Be serially connected in IC ₂8 feet and BG ₁Between the base stage, grounded emitter end, colelctor electrode and BG ₂The control utmost point joins R ₈Be attempted by BG ₂On the control utmost point and the anode, D ₆Be serially connected in BG ₂Between the control utmost point and the ground end, anode and power output end join, and negative electrode is received outfan C, and C forms one group with the ground end and stablizes the DC voltage output loop.

4, DC precardia therapeutic instrument as claimed in claim 1 is characterized in that: the composition of adjustable constant-flow source follower circuit is: resistance R ₉Be serially connected in power output end B and BG ₃Between the base stage.D ₃, D ₄, D ₅After the serial connection, its two ends and other and BG ₃Base stage and ground end join.R ₁₀After WR was connected in series, its two ends were connected on BG respectively ₃Emitter stage and ground end; BG ₃Colelctor electrode is connected to outfan D, and ammeter mA just is being connected to power end C, and its negative terminal is connected to outfan F, outfan F, D and BG ₃Colelctor electrode, emitter stage, R ₁₀, WR forms one group of constant-current source loop.

5, DC precardia therapeutic instrument as claimed in claim 1 is characterized in that: the stable DC voltage of power output end A output is 70 ∨; The stable DC voltage of outfan B output is 11 ∨; The stable DC voltage of outfan C output is 50 ∨; The output current of outfan D, F is adjustable continuously between 0.2mA～1mA.