CN2055023U - Extra-corporeal cardioelectric currents peak-reading plotting apparatus - Google Patents
Extra-corporeal cardioelectric currents peak-reading plotting apparatus Download PDFInfo
- Publication number
- CN2055023U CN2055023U CN 88208287 CN88208287U CN2055023U CN 2055023 U CN2055023 U CN 2055023U CN 88208287 CN88208287 CN 88208287 CN 88208287 U CN88208287 U CN 88208287U CN 2055023 U CN2055023 U CN 2055023U
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- China
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- peak value
- electrode
- body surface
- utility
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Abstract
The utility model provides a body surface electrocardiogram current peak-reading plotting apparatus, belonging to the instrumentation for recording and automatically analyzing electrocardiogram. The utility model makes the extractive eigenvalue drew into equipotential plan by a software part and does the quantitative analysis and fourth dimension displaying. An electrode is made of conductive fabric and is fixed to an elastic force vest with hasps on the chest and the shoulder, and the skin contact of the electrode is good and is started fast. The utility model has the advantages of convenient and comfortable use and convenience for carrying, a main amplifier is only used at the back of the preamplifier for improving the consistency of each signal and adding the reliability of the utility model. A straight flow killer circuit is added at the back of the preamplifier for efficaciously reducing the straight flow drift. The electrode vest, an input sub-rack and a computer are respectively packed.
Description
This utility model belongs to the instrument that electrocardio is write down and analyzes automatically.
Existing its ultimate principle of body surface synchronous detecting instruments of moment is to extract the current potential of each moment (is unit with the millisecond) in the moving whole-heartedly cycle by the topped electrode of whole body large tracts of land (general 85～200), obtain electrocardio theoretic " perfect information " thus, again through hardware and software processing back demonstration body surface map of a series of moment, take a broad view of above-mentioned tens of and even up to a hundred figure at last and carry out medical diagnosis on disease.Adopt above-mentioned instrument to be that figure is time-consuming, information is piled up, knowledge figure difficulty, can not carry out between individuality relatively can not making quantitative analysis, therefore applied always.In addition, what lead system adopted is metal electrode, need be fit one by one, and it costs an arm and a leg and has electric leakage dangerous sometimes.From integral body, instrument is huge, carries constant.
The purpose of this utility model is to provide a kind of can carry out quantitative analysis, have automatic Differential Diagnosis ability, intuitive strong, dependable performance, easy to carry, fit comfortable, the instrument that contact is good, easy to use of the electrode of its lead system.
Technology solution route of the present utility model is: electrode is manufactured with conductive fabric; Increase can be depicted as the eigenvalue that is extracted the software of the equipotential plane figure that can make quantitative analysis and energy four-dimensional display; Behind preamplifier only with a main amplifier and increase a dc suppressing circuit.
Be described in detail below in conjunction with accompanying drawing.
Fig. 1 is a structured flowchart of the present utility model.
Fig. 2 is a circuit block diagram of the present utility model.
Fig. 3 is analog channel switch and main amplifier circuit figure.
The electrode of lead system is made with the foam plastics of bag 2～3 millimeters thick in the conductive fabric, then this conductive fabric soft electrode is fixed on a kind of front and shoulder all has on the stretch vest of hasp structure.
This instrument software part can be extracted the electrocardio perfect information, but the eigenvalue of selecting for use is the peak value and the pairing time of peak value of Q, R, S, T ripple.According to distribution and the potential change rule of each crest value composition of electrocardiogram on body surface, extract the equipotential plane figure that the quality information interpolation is depicted as each peak value.The general overall picture that on 1～3 figure, just can obtain the electrocardio variation.
Above-mentioned equipotential plane figure is carried out statistical procedures, obtain normal mean value and normal range.Position, scope, Potential distribution, gradation law with each figure of normal person are benchmark, and each diagram data of patient is done multiple differentiation (comprising coordinate position, area, Potential distribution), just can realize the individual quantitative analysis of comparing, discern, make.
Generation according to each ripple of normal person's body surface is also prolonged by certain time-histories expansion, time parameter (T) can be represented with different colour bands on screen background thus, and the formed isoelectric level of peak value (Z) plane graph on the body surface (X, Y) is expressed on the background with monochromatic line, can on display screen, obtain four-dimensional image, differentiate to carry out intuitive analysis.
This utility model has only adopted a main amplifier after preamplifier, and is placed on the A/D plate, and the analog channel switch is advanceed to before the main amplifier.Dispose DC component from the body surface ecg that electrode vest is come through preposition amplification, dc suppressing circuit, after preliminary amplification and simple filtering, transport to the CD4051 analog switching circuit again.Then, be sent to main amplifier through timesharing.Such main amplifier is actually the amplifier of a pulse train.This amplifier is to adopt the both-end input form, with anti-common mode disturbances.The one end signal is from the on-off circuit battle array, and the other end is from the Wllson circuit.Signal after main amplifier amplifies is sent to the A/D change-over circuit, forms digital signal, is sent to computer at last.This circuit structure can not only guarantee that each road signal conformance is good, has increased the reliability of instrument, and has simplified circuit, has reduced element, dwindled volume, reduced cost, saves electric energy.In addition, before analog switch, be added with dc suppressing circuit, to reduce the dc shift that a variety of causes causes.
This utility model is packed computer, small-sized preprocessor input subrack, electrode vest respectively, is easy to carry, and is easy to use.
The conductive fabric soft electrode vest of manufacturing by above-mentioned technological approaches only needs the patient is placed on the vest of drawout in advance in use, and chest and shoulder are buckled well; just can guarantee that the fit contact of electrode is good; start fast, convenient as snug as a bug in a rug, particularly suitable to the acute myocardial infarction patient.
With same patient moment synchronization scheme relatively, by this equipment extract eigenvalue and 1～3 body surface electrocardiographic map drawing can be well topped tens of moment synchronization scheme track, show its feature, exactly like.Moreover, this equipment can also concentrate each moment maximum and minimum in this peak value scaling graph center, make the characteristic signal of pathology more concentrated on figure, eye-catching, improved myocardial infarction and various myocardiac diagnosis greatly.
On a small amount of figure, express body surface (X, Y) four-dimensionally and go up the variation of current potential (Z) with respect to time (T), the real-time function of up to a hundred synchronization schemes of tens of Zhang Naizhi concentrated on several the figure show, simplified the method for synchronous scaling graph of moment, avoided piling up of bulk information with loaded down with trivial details, the discriminating that current potential changes of being more convenient for, simultaneously diagnosablely go out local conductive impairment, improved its diagnostic value greatly.
Main amplifier on the shared data collection plate of each road signal, gain is 100 times, does not influence picking rate.Preamplifier amplifies ten times, and overall gain is 1000 times.Preprocessor need not to adjust with potentiometer, and dc suppressing circuit can reduce the dc shift of each amplifier effectively.
Differential amplifier on the data acquisition board can be controlled 50Hz effectively and disturb.
Systematic sampling time every 6 μ s, 100 need 600 μ s, the sampling interval is 2Ms.Each road signal sampling frequency is 500Hz.
Claims (3)
1, a kind of body surface ecg peak value scaling graph instrument that electrocardio is write down and analyzes automatically, by lead system, preprocessor, high-speed a/d converter and computer system are formed, it is characterized in that behind the preamplifier only with a main amplifier and be placed on the A/D plate, and analog switch is advanceed to before the main amplifier, before analog switch, be added with dc suppressing circuit, extract Q, R, S, the pairing time of the peak value of T ripple and peak value is eigenvalue, interpolation is depicted as and can reflects that electrocardio changes each peak value equipotential plane figure and isochronograph of overall picture, (T) is shown on the screen background with different colour bands with time parameter, and with body surface (X, Y) the formed isoelectric level of the peak value on (Z) plane graph is expressed on the background with monochromatic line, four-dimensional display, quantitative analysis.
2, body surface ecg peak value scaling graph instrument according to claim 1, the electrode that it is characterized in that lead system is made with conductive fabric and at the foam plastics of interior bag 2-3 millimeters thick, and be fixed on a kind of front, shoulder has on the stretch vest of hasp structure.
3, body surface ecg peak value scaling graph instrument according to claim 1 is characterized in that electrode vest, preprocessor are imported subrack, computer is packed respectively.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88208287 CN2055023U (en) | 1988-07-15 | 1988-07-15 | Extra-corporeal cardioelectric currents peak-reading plotting apparatus |
| US07/379,608 US5054496A (en) | 1988-07-15 | 1989-07-13 | Method and apparatus for recording and analyzing body surface electrocardiographic peak maps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88208287 CN2055023U (en) | 1988-07-15 | 1988-07-15 | Extra-corporeal cardioelectric currents peak-reading plotting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2055023U true CN2055023U (en) | 1990-03-28 |
Family
ID=4842136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88208287 Withdrawn CN2055023U (en) | 1988-07-15 | 1988-07-15 | Extra-corporeal cardioelectric currents peak-reading plotting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2055023U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102028568A (en) * | 2010-12-22 | 2011-04-27 | 中国科学院深圳先进技术研究院 | Myoelectric artificial limb control device |
| CN107530020A (en) * | 2015-04-14 | 2018-01-02 | 皇家飞利浦有限公司 | Method and system for the heart ischemia detection based on ECG |
-
1988
- 1988-07-15 CN CN 88208287 patent/CN2055023U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102028568A (en) * | 2010-12-22 | 2011-04-27 | 中国科学院深圳先进技术研究院 | Myoelectric artificial limb control device |
| CN107530020A (en) * | 2015-04-14 | 2018-01-02 | 皇家飞利浦有限公司 | Method and system for the heart ischemia detection based on ECG |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |