CN1188635A - Heart function computer detection diagnostic instrument - Google Patents

Abstract

A computerized cardiac function examining and diagnosing instrument for examining and diagnosing cardiovascular diseases is composed of computer, display and printer. The physiological signals of heart are sampled by cardioelectric, cardiophonic and carotid sensors, and then delivered to computer, where the mark points related to different physiological signals are found out, the intervals between mark points and amplitudes of physiological signals are calculated to obtain physiological parameters, the parameters are compared with normal values, and the results are displayed or printed. Its advantages include low cost, easy operation and high correctness.

Description

Heart function computer detection diagnostic instrument

This cardiac function computer detection diagnostic instrument relates to medicine instrument second class and is meant that product mechanism has obtained the world, domestic approval, detection that technology maturation, safety, effectiveness must be controlled and diagnosis of cardiovascular diseases instrument.

All kinds of large and medium-sized instrument of the detection that prior art provided, diagnosis of cardiovascular diseases aspect is more, and the first kind is as: cardiovascular numeral radiography system; Cardiovascular Digital Subtraction radiography system; The various cardiac function checkout equipments of second class, as: Japan produces Stereo ECG instrument, homemade multidimensional cardiac function detector, intelligent cardiac figure instrument etc., and their weak point has: 1. price height; 2. complicated operation needs the professional to operate; 3. instrument is laid the environmental condition height of instructions for use; 4. function is few.

The objective of the invention is to overcome the above-mentioned weak point of prior art, provide a kind of price only to be 1/20～1/40 of like product; Not high to environmental requirement, utilize computer fast, accurately to detect and diagnosis of cardiovascular diseases, and show and print the clinical diagnosis report of character reminding according to normal value automatically; Heart function computer detection diagnostic instrument simple to operate, easy to use.

The technical solution of this cardiac function computer detection diagnostic instrument is: adopt the carotic pulse graph method to detect cardiac systolic function and cardiac vegetative nerve function of peripheral, this instrument synchronous recording two lead electrocardiogram (BCG), phonocardiogram (PCG), carotic pulse graph (CPT), jugular venous pulsation figure (JVP) physiological signal waveform.Utilize EGC sensor, heart sound transducer, carotid artery sensor acquisition human heart signal, the input computer.Adopt instrument to reach the method that manual correction combines automatically, find out each relevant physiological signal index point, calculate interval and range value between each physiological signal index point, obtain each relevant physiological signal parameter, and, show or print the clinical diagnosis report of character reminding automatically according to normal value.

Below in conjunction with accompanying drawing 1 heart function computer detection diagnostic instrument operation principle block diagram, the invention will be further described for Fig. 2 guidance panel sketch map and embodiment.

Fig. 1 heart function computer detection diagnostic instrument operation principle is described as follows: EGC sensor is placed on wrist and ankle The strength of arteriopalmus, it (is apex of the heart bump that heart sound transducer is placed between left chest second rib and the 3rd rib The strength of chest). The arteria carotis sensor is placed on the neck arteries strength of beating. Electrocardio, hear sounds, arteria carotis Sensor will be gathered the human heart physiological signal, through data acquisition amplifying circuit. The input one chip microcomputer Hardware system. The relevant key mapping of operation colorful film keyboard, through keyboard control circuit, the work of command calculations machine, By display control circuit, input display, the idsplay order content detects the diagnosis knot through automatic or manual calibration Really; Through the printer Drive and Control Circuit, make automatic stamper, print the Chinese character diagnostic result.

The function of each key: 0-calibration among Fig. 2; 1-calibration, sampling, flat sleeping heart rate, HRV detect; 2-oscillography, respiratory heart rate variance, demonstration scatter diagram; 3-processes, vertical sleeping heart rate is poor, print scatter diagram: 4-Calibration, RR30/RR15 ratio, withdraw from; 5-report, Fan Shi index of Response; 6-prints, vertical sleeping blood pressure difference; 7-diagnosis, report; 8-withdraws from, prints; 9-withdraws from; Reset key has start-up performance.

This cardiac function computer detection diagnostic instrument is made up of main frame, display, automatic stamper.Main frame: guidance panel, pick off by wiring board, keyboard and each control handle are formed.The heart of main frame adopts the normal wiring board of PSTD Series chip, and it comprises central processing unit, intervalometer, input/output end port, random memory, serial communication port and periphery circuit.Establish 0～90 run-out key on the guidance panel; If the special operation key of eight character remindings: move to left, move to right, continue, end, demonstration, upper left side reset (startup) key, lower-left side paper feed key, bottom right face delete key.Display: adopt 12～17 inches High Resolution Displays.Pick off comprises EGC sensor, heart sound transducer, carotid artery pick off.Printer can be selected miniature, medium-sized, large-scale automatic stamper for use.The video trace of main frame and display is formed.

This cardiac function computer detection diagnostic instrument rule of operation: one. install:

1. display is placed on above the main frame, the main frame rotating head rotates up into the inclined-plane, make display in dash neat.

2. an end of video trace is inserted the video output of main frame back, the other end inserts the video input port of display back.

3. after the three-way sensor line being made in order each pick off is placed on fixed place (hear sounds, carotid artery pick off should be avoided falling bumping) according to easy to use and safe principle, then with in the respective socket behind the three-way sensor 9 cushion mouths insertion main frame.

4. the attaching plug with display and main frame inserts in the corresponding 220V supply socket.Two. start:

1. when starting shooting, open display power supply earlier, open host power supply (with front lower place red button switch) again.The key frame menu appears in indicator screen.

2. when shutting down, close host power supply (with front lower place red button switch) earlier, close display power supply again.(preferably power line being extracted).Three. operation:

1. key frame menu:

Middle rolling picture is electrocardio, hear sounds, carotic pulse graph real-time Simulation waveform, and the menu display box of lower end is examined the three big functions of examining for this instrument.

Can enter the cardiac function submenu by numeral keys " 1 " examines with the inspection of carrying out cardiac function.

Can enter function of nervous system's submenu by numeral keys " 2 " examines with the inspection of carrying out cardiac vegetative nerve function of peripheral.

Can enter heart rate function submenu by numeral keys " 3 ", detect to carry out heart rate variability.

2. cardiac function submenu:

(1) sampling: before entering this function, should be earlier with three-way sensor according to clinical, (EGC sensor is placed on the strength of arteriopalmus of wrist and ankle to be fixed on each regulation position of patient; Heart sound transducer is placed between left breast second rib and the 3rd rib; The carotid artery pick off is placed on the neck arteries strength of beating), enter sampling after, it is clear that screen should demonstrate, three tunnel complete signal waveforms, if waveform is undesirable, can followingly adjust: whether a. patient loosens.B. whether the electrode of electrode holder is in contact skin good (should clean the electrode contact site with ethanol or saline earlier, be coated with wet).C. mobile hear sounds or carotid artery pick off are to the strong position (these two pick offs should be handled with care) of signal.D. regulate and respectively strengthen knob and make each signal waveform moderate (the carotid pulsation signal can be bigger).After all adjusting, the patient gets rid of gas after exhaling, and begins sampling (record) by any key.Sampling is returned submenu after finishing automatically.

(2) show: show the five screen signal waveform and the last average signal waveforms of having sampled successively, by＜continue key turns over screen, by＜finish key finishes in advance and return submenu.By observing the signal waveform of having sampled, can determine the quality of sample effect, but if can not use resampling.Observation signal waveform particularly carotid pulsation signal waveform can be subsidized some heart disease of diagnosis (with reference to clinical guide for use).

(3) handle: find out each marker point of five cardiac cycles automatically according to three tunnel signal waveforms of having sampled, and return submenu.

(4) calibration:, can carry out the craft calibration and calculate the Clinical detection data at last automatically by this function because the diversity between each signal waveform of patient in each marker point of finding out automatically, may be put slightly deviation individually.

After entering this function, at first will be according to screen prompt, input patient's sex.After this promptly enter the display screen of first each signal waveform of cardiac cycle, the marker point of each waveform is that the short vertical line with a tape label indicates, if certain index point has deviation, need to move, numeral keys's (screen upper end have prompting) of at first " pressing " the label representative of this index point to be to activate this index point, after this by＜move to left and＜move to right key gets final product this index point is moved to the tram; " press "＜show key can demonstrate the main clinical indices value that current each index point of this cycle calculates in the screen lower end, can judge its each index point position whether correctly (with reference to the computational methods of each index in the clinical guide for use) according to " normal value " and concrete condition, adjust by the limit, the limit is observed, can make each index point position further accurate,＜show key is on ﹠ off switch, by " demonstrations " for the first time, again by once " demonstration " disappearance; If unusual each the index point confusion of current cardiac cycle waveform can " be pressed "＜delete〉key cancels this cycle, not influence the calculating of last meansigma methods; " press "＜continue key changes one-period; " press "＜finish key finishes to return submenu in advance.

(5) report: show on screen that at first five cardiac cycles respectively detect desired value and meansigma methods, if it is big so that influence the correctness of meansigma methods that the data in certain cycle of a certain index and meansigma methods differ, can reenter " calibration " function and adjust corresponding index point of this cycle, make it further accurate.Demonstrate the Chinese character title and the meansigma methods that respectively detect index at last,, then before this index meansigma methods, have " * " number sign if a certain index is unusual.Contrast " normal value " and consult clinical meaning in (clinical guide for use), and in conjunction with concrete clinical picture, just can write out the clinical diagnosis with value and report.

(6) print: printable 13 of going out cardiac function detect desired value and Chinese character diagnosis report, and print electrocardio, hear sounds, carotic pulse graph, for future reference readding and long preservation.

(7) diagnosis: detect desired value according to each, judge its abnormal index automatically, and on screen, demonstrate the clinical diagnosis report of each abnormal index, according to the weight of each abnormal index, provide the grade report at last for reflection heart damage degree.Because of screen is limit, expect the clinical diagnosis report of more detailed abnormal index, can be with reference to (clinical guide for use).

(8) withdraw from: return the main menu picture, so that select other test item.

3. vegetative nerve function submenu:

Electrode holder is led by electrocardiographic criteria II, place patient's limbs, and check whether contact well.(hear sounds, carotid artery pick off do not need, and please put well).

(1) the flat heart rate that crouches: detect the flat heart rate that crouches according to screen prompt.

(2) respiratory heart rate variance: detect the respiratory heart rate variance according to screen prompt.

(3) upright heart rate for sleeping in is poor: it is poor to detect the upright heart rate that crouches according to screen prompt.

(4) RR30/RR15 ratio: the ratio that calculates the 30th of upright position and the 15th cardiac cycle automatically.

(5) Fan Shi index of Response: (capsule of inflating of sphygomanometer should being unloaded in advance, so that the patient blows to sphygomanometer by trachea) detected according to screen prompt.

(6) upright blood pressure difference for sleeping in: according to the blood pressure of screen prompt detection patient clinostatism with upright, and input.(attention): preceding (1), (2), (3), (5) item show each cardiac cycle detection index value and sample waveform after detecting end automatically one by one, can judge the detection effect by observation numerical value and waveform, and effect is bad can be detected again.

(7) report: a. shows that 6 of cardiac vegetative nerve function of peripheral detect desired value, abnormal index " * " number mark.B. detect abnormal index automatically, and provide the clinical diagnosis report of each abnormal index.(more detailed diagnosis report should be according to detecting desired value, with reference to (clinical guide for use), and writes out according to patient's clinical picture).C. according to each effect that detects index, provide the grade report of weighing the cardiac vegetative nerve function of peripheral damaged condition.

(8) print: print 6 of cardiac vegetative nerve function of peripheral and detect desired value and Chinese character title.For future reference readding and long preservation.

(9) withdraw from: return the main menu picture, so that select other test item.

4. heart rate variability detects submenu:

Electrode holder is led by electrocardiographic criteria II, place patient's limbs, and whether inspection contacts, and well (hear sounds, carotid artery pick off do not need, and please put well.The patient puts down for sleeping in and loosens).

(1) heart rate variability detects: adjust and the view screen ecg wave form, after waiting to stablize, press any key, begin the ecg wave form of sampling.Need 1000 cardiac electrical cycle of sampling, the automatic record of the computer cardiac electrical cycle number of having sampled, and be presented at different curtain upper end.Generally need tens minutes.

(2) show scatterplot: calculate and on screen, demonstrate the heart rate variability scatterplot.Each typical disease of heart rate variability diffusing some shape figure and explanation can be write out diagnosis report in the contrast (clinical guide for use).

(3) print scatterplot: print the heart rate variability scatterplot; For future reference readding and long preservation.

(4) withdraw from: return the main menu picture, so that select other test item.

＜reset key: (panel left side red color keys) when following situation appears in instrument, can by＜reset key returns the main menu picture, the data that obtained before this, result etc. can not lost.

(1) in any situation, any moment, need interrupt by force or abandon current state, return main menu, restart.

(2) by any numeral keys or operated key, indicator screen is reaction (deadlock phenomenon) not.

(3) replace " withdrawing from " function in each submenu.

6.＜and paper feed〉key: (panel left side blue color keys) can be by＜paper feed when following situation appears in instrument〉key.

(1) after examining report is printed and finished,,, makes extrapolated one section of printing paper by this key for the ease of watching or being convenient to the printing paper of tearing.(during printed report, forbidding) by this key.

When (2) printer is changed printing paper, the printing paper front end is cut into pointed, inserts printer paper feed inlet, make printer automatically paper be sent the printer exit slot by this key.(instrument should at open state).

(1). parameters of left ventricular function explanation and measuring method:

Total electromechanical systole time (EMT, Q-S2, Q-A2): be that sequences of ventricular depolarization began to the time between finishing.

(1). measuring method: the time distance of the aortic valve composition (A2) from electrocardiogram Q (R) ripple to second heart sound (S2) (Q-S2, Q-A2).

(2). illustrate: Q-S2 is subjected to the influence of heart rate, also needs to make heart rate with the Weissler regression equation and proofread and correct after surveying out the Q-S2 value, to calculate total electromechanical systole time index Q-S2I.Q-S2I (man)=Q-S2 (measured value)+2.1 * HR; Q-S2I (woman)=Q-S2 (measured value)+2.0 * HR.

Left ventricular ejection time (the left ventricular ejection phase, LVET): be that left ventricle begins to penetrate blood to the time that finishes, i.e. time from the opening of aortic valve to the aortic valve closing.

(1) measuring method: begin till the time D N of dicrotic notch minimum point from machcardiogram ascending branch starting point (U point).

(2) illustrate:

1. .LVET and left ventricular-stroke volume, it is relevant to penetrate blood speed and heart rate, proofreaies and correct to calculate left ventricular ejection index LVETI so also need to make heart rate with the Weissler regression equation after surveying out the LVET value.

LVETI (man)=LVET (measured value)+1.7 * HR;

LVETI (woman)=LVET (measured value)+1.6 * HR.

2. the measurement of .LVET is that initial point (U) by CPW is to the time between the incisura (DN) of CPW.Because the transmission of CPW needs the regular hour, so U point and dicrotic notch minimum point DN are accordingly than opening of aortic valve with close late.But the time interval of U-DN equates with the LVET that has the wound method to measure, and is a kind of method of using always so utilize the U-DN interval of CPW to survey LVET.

Left pre-ejection period (PEP, PEP): be to the distance between the opening of aortic valve (E point) from ventricular muscles depolarization (QRS ripple starting point Q ripple).

(1) measuring method: PEP begins to begin to penetrating blood from the QRS ripple, promptly to time limit (U point) that machcardiogram begins.

(2) illustrate:

1. .Q-S2 is the time distance (Q-A2) of the aortic valve composition A2 from the QRS ripple to second heart sound, and this claims the electromechanical contraction time again.2. .PEP also is subjected to the influence of heart rate.So also needing to make heart rate with the Weissler regression equation after surveying out the PEP value proofreaies and correct to calculate left pre-ejection period index (PEPI), PEPI (man)=PEP (measured value)+0.4 * HR; PEPI (woman)=PEP (measured value)+0.4 * HR.

4.PEP/LVET: be PEP and penetrate blood phase ratio.

(1) measuring method: PEP/LVET is left pre-ejection period and penetrates the ratio of blood phase.

(2) illustrate: Lewis etc. show that by angiocardiography and machcardiogram contrast there is 95% case ejection fraction (EF)＜40% PEP/LVET＞0.5.The cardiac output that this part case is described obviously reduces.Many scholars think that PEP/LVET 〉=0.5 can be used as served as one of indices of unfavorable prognosis.Because patient's cardiac muscle still has certain compensatory capacity, its PEP/LVET can be normal during slight cardiac damage; If even cardiac muscle obviously impaired still non-evident sympton and sign clinically also can have increasing of PEP/LVET, it is closely related that it increases the impaired seriousness of degree and cardiac muscle.

5. isovolumic contraction period (ICT): the constancy of volume when meaning ventricular systole, promptly atrioventricular valves (A V valves) is closed to aortic valve and does not open as yet, is the stage of air-tight state.

(1). measuring method is that PEP deducts the Q ripple to first heart sound Bicuspid valve composition.

ICT＝PEP-(Q-S1M)

ICT＝(S1-S2)-LVET

(2) illustrate: the pressure altitude of ventricular systole speed left ventricular pressure rising speed (left ventricle dp/dt) and the required rising of ventricular systole when the length of ICT depends on isovolumic contraction period.Cardiac contractile force is strong more, and rate of ventricular pressure rising is fast more in the unit interval, and then ICT is short more, otherwise during left heart failure, ICT prolongs, so ICT is an important indicator of ventricular systole speed (rate of pressure rise).

6.ICT/LVET ratio: be isovolumic contraction time and left ventricular ejection time ratio.

(1) measuring method: be the ratio of isovolumic contraction time and left ventricular ejection time.

(2) illustrate: the assay method of ICT adopts ICT=PEP-(Q-S1M) or ICT=(S1-S2)-LVET.

7. mechanical contraction time (MST, S1-A2, S1-S2): mean by the time of MC to aortic valve closing.

(1) measuring method: i.e. A2 composition (S1-A2) from phonocardiographic first heart sound (S1) to second heart sound (S2).But someone thinks that real mechanical contraction time (MST) should begin time to aortic valve closing from ventricular systole, promptly by the C point of the ACG interval to A2.Be C-A2 (C-S2), it is equivalent to the poor of LVET and ICT, and is slightly long than S1-A2.

MST＝S1-S2

(2) illustrate: MST obviously is subjected to the influence of heart rate

8. ventricle electromechanical delay time (EML):

(1) measuring method: interval time till the C point from Electrocardiographic QRS wave group to ACG, i.e. Q-C interval.Also can become the office to end, i.e. Q-S1 by QRS wave group starting point to phonocardiographic first heart sound (S1) high frequency high amplitude.

EML＝Q-S1

(2) illustrate: middle when just developing into intraventricular pressure and surpass intra-atrial pressure because of the C point of ACG is that ventricle begins to shrink and pressure begins rising point through phase ventricular systole beginning, cause that just atrioventricular valves (A V valves) closes.So the Q-S1 interval, is slightly longer than the Q-C interval.This time length depends on the height of left atrial pressure; Left ventricular diastolic pressure and left atrial pressure extent; Rate of pressure rise reached and surpasses the required time of left atrial pressure when left ventricle was shunk; The active state of Bicuspid valve itself and aorta have or not and backflow.

The degree that prolongs according to Q-S1 can be divided into three grades: I level: be 60～70ms; II level: 80～90ms; III level:＞100ms.Mitral orifice and Q-S1 have good dependency.During as mitral stenosis, narrow bore below 0.7 square centimeter the time, Q-S1 general＞100ms.So Q-S1 also has certain value on the quantitative analysis Bicuspid valve is obstructed degree.The prolongation of patients with coronary heart disease Q-S1 is that rate of pressure rise delays relevant when causing myocardial contraction to weaken with ventricular systole with myocardial ischemia.Someone reports that CHD group Q-S1 is 70.4～90.5ms; Q-S1 often prolongs during the completeness left bundle branch block.

9. pulse wave passing time (PWTT _iA2-DN): be that pulse wave blood vessel wall from the aorta initial part is delivered to carotid artery record position required time.

(1) measuring method: promptly from time of the DN (A2-DN) of the A2 to CPW of phonocardiogram S2.

PWTT＝A2-I

10.Q-U the time: the presphygmic period of being left ventricle and pulse wave transmit the time difference.

(1) measuring method: from the time that starting point Q to the CPW ascending branch starting point U of electrocardiogram QRS ripple is ordered.

11.Q-U/LVET ratio: be row's arteries and veins time difference and row's blood phase ratio.

(1) measuring method: be the ratio of Q-U interval and left ventricular ejection time.

(2). explanation of heart vegetative nerve index and calculating:

1. the flat heart rate (HR00) that crouches: no primary cardiac patient's heart rate is lasting greater than per minute 90 times, often points out vagus nerve function low.Merge vegetative nerve pathological changes or sympathetic hyperfunction such as hyperthyroidism as diabetes.

2. respiratory heart rate variance (HR1-HR2): the respiratory heart rate variance less than per minute 15 times or more than 60 years old the person mainly refer to be confused the stop ﹠ go function obstacle less than 10 normal prompting vegetative nerve functions of per minute, the adult only does slight breathing and tangible arrhythmia (＞30) just occurs, then can infer vagal superfunction.

3. the upright heart rate poor (HR3-HR4) that crouches: less than per minute 15 times or more than 60 years old the person then be for 10 times unusual less than per minute, the upright difference that crouches is excessive to be seen health body constitution and crosses that weak to reach cardiac function low.

4.RR30/RR15 ratio: as if being unusual, if ratio=1 explanation vagus nerve injury less than 1.03.Ratio is crossed low multilist and is shown owing to original just very fast as hyperthyroidism, can not slow down institute after the vagus nerve injury extremely.

5. Fan Shi index of Response (VAR): ratio is normal greater than 1.21, and 1.11～1.20 is critical, is unusual less than 1.10.

6. upright blood pressure difference (HP/LP) crouches: healthy people stands up the after-contraction pressure can be constant, a little higher than or be lower than clinostatism 5～10mmHg, upright position diastolic pressure is constant or be higher than clinostatism 5～10mmHg, upright blood pressure difference blood pressure is that 10mmHg then belongs to normally if crouch, 11～29mmHg is critical, then is the unusual orthostatic hypotension that claims greater than 30mmHg.

(3). heart rate variability detects explanation and calculates:

Heart rate variability (HRV) is meant that the continuous heart claps the small fluctuation of each R-R interval or its inverse (instantaneous heart rate just).Even it is found that healthy people's heart rate is also non-constant constant under quiescent condition, but fluctuating is arranged.Heart rate variability is too small to be the performance of potential physiology pathological changes on the contrary.All multifactor influences in the heart rate receptor, and finally show by autonomous (sympathetic and parasympathetic) neural coordinative role, that is to say, the information that has contained relevant cardiovascular system in the HRV signal, extraction to these information, can qualitative assessment sympathetic nerve and vagal tonicity and harmony, and to the influence of cardiovascular activity.

Scatterplot be meant with during the R--R of last bat during two adjacent hearts are clapped in the HRV signal or instantaneous heart rate be abscissa, the analog value that clap back one is the plane graph that vertical coordinate forms.Each point focuses mostly near 45 degree rays on normal person's the scatterplot, is the comet shape, and it is stronger that it shows that normal person's adjacent two claps the heart rate dependency, and macrorelief is also big more more but it is worth; And to the cardiac, its scatterplot just shows as more complicated shape of torpedo-shaped, sector shape or other.Therefore, scatterplot can be used as the reference index of heart disease diagnosis.

This cardiac function computer detection diagnostic instrument characteristics:

1. this instrument is no wound type cardiac function diagnostic apparatus: noinvasive, safety, detection of dynamic repeatedly.Recent two decades comes domestic and international many scholars, studied this method and obtained very great achievement, this method with obtain parameter, carried out contrast and big quantity research, good dependency is arranged: but the routine examination of being more convenient for extensively carrying out has more vitality and wide prospect.

2. highly sensitive and high integration: the core of instrument is the popular high integration of abroad just having developed and gone on the market in recent years, high-performance, and inexpensive computer, it concentrates central processor, intervalometer, input/output end port, the reservoir serial communication port adds other peripheral circuits for the whole body (integrated circuits of a slice 40 feet) at random, make the circuit part of whole instrument, can an integrated block length 25cm, therefore the circuit board of wide 15cm has very strong anti-interference, the conditional request of environment is lower to external world, for a long time reliably working.

3. high performance program language: the language of instrument partly is language ASM and the PL/M that adopts the special use of computer, the efficient height, and coding is short, the input/output end port of direct Control Computer, intervalometer, memory etc. have played decisive role to the various functions that realize instrument.

4. advanced full menu Chinese character prompting, the man-machine conversation mode, as long as user is operated and can be finished the whole operation process according to the simple and clear character reminding on the indicator screen.The automatic demonstration of full Chinese character, the clinical diagnose report can be grasped average medical worker soon.

5. simple and clear button is convenient to operation, the whole operation panel of main frame is except ten number enter keies (0-9), have only 5 character reminding special operation keys (move to left, move to right, continue, finish, print), simple and clear screen prompt and several dedicated button, it is easy and simple to handle that instrument is had, Yi Xue, practical characteristics.

6. Xian Jin printout: selected for use the daily output mini-printer and in, large-scale automatic stamper, mix the drive circuit on the mainboard, speed is fast, gets ready closely, volume is little, price is low, satisfies the requirement that instrument system is printed.

7. the complete machine structure of compact and reasonable: instrument is made up of main frame, display and automatic stamper three parts, wherein, main frame integrated circuit, keyboard, various kinds of sensors and various rotary switch are in one, and cabinet adopts the hair style of flatting turn to be convenient to operation and carries the antistatic plastic cabinet.Wherein portable: volume is small and exquisite attractive in appearance, and is in the small suitcase of can packing into, easy to carry.

8. this detector adapted one overlaps software, and main frame can adopt high, medium and low shelves different types of machines, to satisfy the demand of medical department different levels.

Range of application of the present invention:

1). be applicable to the change and the disease of early discovery cardiovascular function.

2). check arteriosclerosis, coronary heart disease, quantitative parameter is provided, judge the degree of its pathological changes.

3). to arrhythmias such as premature beat, atrial fibrillations, judge whether it is functional, the order of severity and to the influence of blood dynamic.

4). to electrocardiographic abnormalities such as myocardial ischemia, analyze its possible reason, the type of mechanism and blood oxygen supply and demand obstacle.

5). judge the character and the severe of aortic valve mouth or left ventricular outflow tract obstacle.

6). the hypertension of a variety of causes, can classify according to blood dynamic, determine different therapeutic schemes and observe the curative effect, adjust medication.

7). to hypertension and various cardiovascular disease, judge the degree of its infringement cardiac function and arteria coronaria function.

8). the judgement of cardiac function and heart failure situation, the judgement of the myocardial infarction order of severity and prognosis.

9). the monitoring of cardiovascular functioies such as wound, shock, operation, anesthesia, rescue.

10). detect by vegetative nerve function, research causes the reason of heart rate and blood pressure.

11). the cardiovascular Study on mechanism of medicine, acupuncture, the qigong and other special treatments and curative effect assessment.

12). auxiliary tcm clinical practice is distinguished the observation of arteries and veins, dialectical and Chinese medicine effect, carries out the combination of Chinese and Western medicine research of relevant blood dynamic.

13). relevant physiology (as physiology of exercise, navigation physiology etc.), the research of Pathophysiology or relevant pharmacology.

14). detect magnetic medical bedclothing (magnetic therapy cotton-padded mattress, magnetic therapy quilt etc.) to cardiopathic concrete curative effects such as arteriosclerosis.

Embodiment:

Pick off overall dimensions: 22mm * 12mm;

Weight: 8g;

Running voltage (direct current): ± 12V is less than 200mA, and 5V is less than 1A;

Main frame: antistatic plastic cabinet;

Display:adopt 12～17 inches High Resolution Displays; Automatic stamper:adopt mini-printer, medium-sized, large-scale printer according to different model; Portable:volume is little, and (28 *, 26 * 7cm) portable bands are joined the daily output microprinting and are hit; 486 types:join medium-sized automatic stamper, 17 inches display; 586:join large-scale automatic stamper, the dirty functional measurement index of 17 inches display.1. carotic pulse graph thought-reads: the presphygmic period that HR heart rate EMT electromechanical systole phase LVET left ventricle row blood phase Q-U time HWT hemiwave time ICT isovolumic contraction period MST MS Q-U/LVET ratio EML electromechanical PWT period of delay pulse wave transmitting phase PEP left ventricle the PEP/LVET left ventricle presphygmic period with row's blood phase ratio I CT/LVET isovolumic contraction period and left ventricle row blood phase ratio 2. vegetative nerve function measurement indexes: the sleeping vertical blood pressure difference Fan Shi index of Response 3. HRVs detection of the vertical sleeping poor RR30/RR15 ratio of heart rate of flat sleeping heart rate respiratory heart rate variance

Claims (4)

1. heart function computer detection diagnostic instrument comprises:

(1). main frame;

(2). display;

(3). automatic stamper,

The main frame that it is characterized in that this heart function computer detection diagnostic instrument is made up of guidance panel, the pick off of flat turn an antistatic plastic cabinet, wiring board, keyboard and each control handle;

2. by the described heart function computer detection diagnostic instrument of claim 1, it is characterized in that said wiring board adopts the PSTD Series chip, it comprises central processing unit, intervalometer, input/output end port, random memory, serial communication port and periphery circuit;

3. by the described heart function computer detection diagnostic instrument of claim 1, it is characterized in that said pick off comprises: EGC sensor, heart sound transducer, carotid artery pick off;

4. by the described heart function computer detection diagnostic instrument of claim 1, it is characterized in that establishing on the said guidance panel 0～90 run-out key, five Chinese character special operation keys: move to left, move to right, continue, finish, print; Also be provided with reset, paper feed, deletion, display key.

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