CN101589948B - Blood pressure measurement calibration method by oscillography and electronic sphygmomanometer - Google Patents
Blood pressure measurement calibration method by oscillography and electronic sphygmomanometer Download PDFInfo
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Abstract
The invention provides a blood pressure measurement calibration method by oscillography and an electronic sphygmomanometer; the method is characterized in that: aiming at the oscillography blood pressure measurement method which can calculate blood pressure according to relation of the envolope curve of pulse wave vibration amplitude and inflatable component pressure, the invention uses a Korotkoff sound method to identify personal parameter identification points of a tested person.
Description
Technical field
The present invention relates to a kind of method and the electric sphygmomanometer that uses the method, particularly a kind of calibration steps of oscillographic method blood pressure measurement and electric sphygmomanometer of automatic measurement blood pressure.
Background technology
The existing electric sphygmomanometer of measuring blood pressure automatically generally by inflatable part pneumatic sleeve, air pump, air valve, pressure transducer, electronic circuit,, microprocessor, display etc. constitute.Software program is housed in the microprocessor, implements blood pressure and measure automatically, the method therefor great majority are oscillographic method.
Adopt oscillographic method to measure in the process of blood pressure; By air pump inflatable part is pressurized to a target pressure value (goal pressure generally exceeds 20-40mmHg than measured's systolic pressure or title high pressure) earlier; This moment, inflatable part interruption artery blood flow was exitted to inflatable part then slowly.Along with inflatable part pressure descends, beginning can detect pulse wave in the pressure signal in the inflatable part.Pulse wave is the air pressure fluctuation that the arterial blood pressure oscillation of heartbeat generation produces in inflatable part.When oversleeve pressure drops to systolic pressure when following from being higher than systolic pressure, the pulse wave amplitude can increase gradually, and during to average artery pressure, pulse wave reaches maximum.Pulse wave is decayed with the decline of inflatable part pressure again then.When inflatable part pressure during far below diastolic pressure (or claim low pressure), pulse wave disappears.In the pressure decline process of inflatable part; Send into microprocessor after the pressure signal process pressure transducer of inflatable part and electronic circuit are handled, microprocessor comes calculating blood pressure according to the relation between pulse wave amplitude and the inflatable part pressure, after calculating systolic pressure and diastolic pressure; Open air valve; Oversleeve is all exitted, accomplish the one-shot measurement process, and preserve measurement result and demonstration.
The oscillographic method blood pressure measurement is to come calculating blood pressure according to the relation between the envelope of pulse wave amplitude and the inflatable part pressure.The inflatable part pressure corresponding with the maximum of envelope is mean arterial pressure; Maximum with envelope is a reference point; With this point be the basis; On the envelope between inverse time direction finding numerical value be the peaked about 0.55 times envelope point of envelope, the pairing inflatable part pressure of this point is systolic pressure; To positive time direction finding numerical value is peaked about 0.72 times envelope point, and the pairing inflatable part pressure of this point is diastolic pressure.0.55 be called systolic pressure parameter identification point and diastolic pressure parameter identification point respectively, be the data that most people are suitable for that draw according to clinical experiment with 0.72 these two constants.Because the difference of electric sphygmomanometer manufacturer, these two constants may be different.
Facts have proved, when using oscillographic method to measure blood pressure, and with being referred to as " golden standard " Ke's formula sound method measure blood pressure and compare, always some measured can produce the above measurement error of 10mmHg, thereby influences the diagnosis of the state of an illness.
Summary of the invention
To defective that exists in the prior art or deficiency; When the inventor measures blood pressure to how to solve with oscillographic method always some people problem that can produce measurement error study; A kind of calibration steps and the electric sphygmomanometer that uses the method for oscillographic method blood pressure measurement have been invented; The inventor does not find method provided by the invention and sphygomanometer as yet through retrieval.
The technical conceive that the present invention is total: provide a kind of and in automatic blood pressure measurement, measure the calibration steps of blood pressure and the electric sphygmomanometer of use the method with oscillographic method; Said electric sphygmomanometer is made up of the hardware and software program that comprises microprocessor; Said electric sphygmomanometer comprises at least one parameter identification point setting button (being called for short " setting button "); With the parameter identification point setting program that in said microprocessor, is equipped with,, confirm the distinctive parameter identification point of measured through said setting button and parameter identification point setting program; And it is stored in the memory in the said electric sphygmomanometer, use in order to said measured.Said electric sphygmomanometer can further include a calibration selector switch, to select to use different parameter identification points.
The calibration steps of said oscillographic method blood pressure measurement may further comprise the steps:
1) when measuring blood pressure, use stethoscope under arm-type oversleeve, to monitor Ke Shiyin with the arm-type electric sphygmomanometer that contains oscillographic method;
2) when hearing systolic pressure Ke formula sound or during diastolic pressure Ke formula sound, with said setting button produce and input systolic pressure time signal or diastolic pressure time signal in said electric sphygmomanometer microprocessor;
3) confirm and be provided with measured's systolic pressure and diastolic pressure parameter identification point with said parameter identification point setting program by key input signal according to said setting.
Said systolic pressure Ke formula sound is in the decompression process of blood pressure measurement, first Ke's formula sound that the operator uses stethoscope on the arteries under the arm-type oversleeve, to hear; Diastolic pressure Ke formula sound is last Ke formula sound of hearing.
Technical scheme of the present invention is following:
The calibration steps of oscillographic method blood pressure measurement; It is characterized in that comprising: for the oscillographic method electric sphygmomanometer that comes calculating blood pressure according to the envelope and the relation between the inflatable part pressure of pulse wave amplitude; The operator can be when Ke Shiyin takes place, and confirms measured's individual parameter identification point through using setting button on the said electric sphygmomanometer; The parameter identification point setting program that said electric sphygmomanometer comprises microprocessor and in said microprocessor, is equipped with; Said setting button starts the parameter identification point setting program in the microprocessor; Thereby obtain the distinctive individual parameter identification point of measured; And the distinctive individual parameter identification point of this measured is stored in the memory in the said electric sphygmomanometer, use in order to said measured.
Said parameter identification point comprises systolic pressure parameter identification point, and/or diastolic pressure parameter identification point.
Said through using the setting button to confirm that measured's individual parameter identification point comprises: as when systolic pressure Ke formula sound time of origin and diastolic pressure Ke formula sound time of origin, to produce systolic pressure time signal and diastolic pressure time signal respectively through the setting button on the said sphygomanometer; The microprocessor of said electric sphygmomanometer calculates at envelope point value P1 corresponding with it on the envelope of pulse wave amplitude according to the systolic pressure time signal, calculates envelope point value P3 corresponding with it on the envelope of pulse wave amplitude according to the diastolic pressure time signal; Microprocessor calculates the envelope maximum P2 of pulse wave amplitude simultaneously; With the merchant of P1/P2 as systolic pressure parameter identification point, with the merchant of P3/P2 as diastolic pressure parameter identification point.Said Ke's of utilization formula sound method confirms that systolic pressure Ke formula sound time of origin of measured and diastolic pressure Ke formula sound time of origin may further comprise the steps: the operator uses the electric sphygmomanometer that comprises arm-type oversleeve that the measured is done automatic blood pressure measurement; In the decompression process of automatic blood pressure measurement, the operator uses stethoscope careful Ke Shiyin of monitoring under the arm-type oversleeve of electric sphygmomanometer; Systolic pressure Ke formula sound time of origin correspondence is heard the time of first Ke's formula sound; Diastolic pressure Ke formula sound time of origin correspondence is heard the time of last Ke formula sound.
The said method that produces systolic pressure time signal and diastolic pressure time signal respectively according to systolic pressure Ke formula sound time of origin and diastolic pressure Ke formula sound time of origin comprises; The operator when systolic pressure takes place with when diastolic pressure takes place, click two same or different buttons respectively, to produce systolic pressure time signal and diastolic pressure time signal.
Electric sphygmomanometer is characterized in that comprising: at least one parameter identification point is set button, and said setting button can start the parameter identification point setting program in the microprocessor, thereby obtains the distinctive individual parameter identification point of measured; The preparation method of said individual parameter identification point is: behind the systolic pressure Ke formula sound time of origin and diastolic pressure Ke formula sound time of origin generation systolic pressure time signal and diastolic pressure time signal that said setting button is confirmed according to Ke's formula sound method; The microprocessor of said electric sphygmomanometer is through said systolic pressure time signal and said diastolic pressure time signal, and the corresponding point value on the envelope of acquisition pulse wave amplitude calculates.
When said electric sphygmomanometer includes only one when setting button, same setting button can be used to set systolic pressure and two parameter identification points of diastolic pressure, systolic pressure Ke formula sound time of origin formerly, diastolic pressure Ke formula sound time of origin after.
When said electric sphygmomanometer includes two setting buttons, to set button for one and can be used to set systolic pressure parameter identification point, another sets button can be used to set diastolic pressure parameter identification point.Comprise a calibration selector switch, to select to use different parameter identification points.
Technique effect of the present invention is following:
The calibration steps of oscillographic method blood pressure measurement of the present invention and electric sphygmomanometer allow the operator with being referred to as " golden standard " Ke's formula sound method to a concrete measured electric sphygmomanometer of a use oscillographic method is carried out personalized calibration, thereby improve the accuracy of electric sphygmomanometer to given measured's blood pressure measurement.This has the important clinical meaning for hypertensive diagnosis and treatment.
Description of drawings
The hardware configuration sketch map of Fig. 1 electric sphygmomanometer;
The calibration software program flow diagram of Fig. 2 electric sphygmomanometer;
Fig. 3 inflatable part pressure signal and pulse wave amplitude and the envelope thereof corresponding with it;
Fig. 4 electric sphygmomanometer calibration steps sketch map.
Reference numeral is listed as follows:
Fig. 1 and Fig. 4: 20-stethoscope, 22-pressure-producing part; The 24-inflatable part; The 25-vent valve; The 26-pressure transducer, the 30-difference amplifier, 33-sphygomanometer switch, the 34-microprocessor, 35-sets button, the 36-display, 37-calibrates selector switch, 38-electric sphygmomanometer;
Fig. 2: the 42-initialization, the 44-data are obtained, and the 46-pressure period judges that the 48-pressure display is upgraded; 50-sets the button input and judges that 52-sets button record input time, 54-blood pressure measurement; The 56-blood pressure measurement finishes to judge that blood pressure measurement shows before the 58-calibration, and 60-people's parameter identification point calculates; 62-people's parameter identification point record, 64-calibration back blood pressure The measured results show, 66-EP (end of program);
Fig. 3: P (t)-inflatable oversleeve pressure, Eo (t)-pulse wave amplitude envelope line, t1-hears the time of Ke Shiyin for the first time; The time that t2-pulse wave envelope maximum P2 takes place, t3-hears the last of the time of Ke Shiyin, the Pa-systolic pressure; The Pb-average artery pressure, Pc-diastolic pressure, the value of P1-pulse wave amplitude envelope line when t1; The maximum of P2-pulse wave amplitude envelope line, the value of P3-pulse wave amplitude envelope line point when t3;
Specific embodiments
The present invention provides a kind of calibration steps and the electric sphygmomanometer that uses the method to the oscillographic method in the automatic blood pressure measurement, and said electric sphygmomanometer comprises hardware components and software program part.Hardware components comprises: inflatable part, air pump, air valve, pressure transducer, electronic circuit, microprocessor, at least one parameter identification point are set button (being called for short " setting button "), and display.Software section comprises: parameter identification point setting program and oscillographic method blood pressure measurement program.Said electric sphygmomanometer can further include a calibration selector switch, to select to use different parameter identification points.
When said electric sphygmomanometer included only a setting button, same setting button can be used to set systolic pressure and two parameter identification points of diastolic pressure.When said electric sphygmomanometer includes two setting buttons, to set button for one and can be used to set systolic pressure parameter identification point, another sets button can be used to set diastolic pressure parameter identification point.
More specifically, when said electric sphygmomanometer included only a setting button, same setting button can be used in the calibration process input when measuring systolic pressure and the time signal when measuring diastolic pressure.When said electric sphygmomanometer includes two setting buttons, to set button for one and can be used in the time signal of calibration process input when measuring systolic pressure, another sets button can be used to import the time signal when measuring diastolic pressure.
The method of the time signal of input systolic pressure or diastolic pressure can be in calibration process:
1) operator uses the electric sphygmomanometer that comprises arm-type oversleeve that the measured is done automatic blood pressure measurement;
2) in the decompression process of automatic blood pressure measurement, the operator uses stethoscope careful Ke Shiyin of monitoring under the arm-type oversleeve of electric sphygmomanometer; When hearing first Ke's formula sound, set button by the next one immediately, input systolic pressure time signal; When hearing last Ke formula sound, press same setting button or second setting button immediately, input diastolic pressure time signal.
Said parameter identification point setting program can may further comprise the steps:
1) confirms Ke's formula sound systolic pressure that method is surveyed (or diastolic pressure) time of origin according to said setting by the key input signal time;
Pulse wave amplitude envelope line point value P1 (or P3) when 2) recording systolic pressure (or diastolic pressure) generation according to Ke's formula sound systolic pressure that method is surveyed (or diastolic pressure) time of origin;
3) measure pulse wave amplitude envelope line maximum P2;
4) calculate systolic pressure (or diastolic pressure) parameter identification point P1/P2 (or P3/P2);
5) storage measured's systolic pressure (or diastolic pressure) parameter identification point P1/P2 (or P3/P2).
When said electric sphygmomanometer included only a setting button, said parameter identification point setting program was pressed true systolic pressure of key input signal time sequencing and diastolic pressure time of origin according to setting; The systolic pressure time of origin formerly, the diastolic pressure time of origin after.
When said electric sphygmomanometer comprised two setting buttons, first was designated as systolic pressure and sets button, and second is that diastolic pressure is set button.
Said oscillographic method calibration steps may further include following steps:
1) repeats twice or repeatedly obtains a measured's systolic pressure (or diastolic pressure) parameter identification point;
2) meansigma methods of the said measured's of calculating systolic pressure (or diastolic pressure) parameter identification point;
3) meansigma methods of storage measured's systolic pressure (or diastolic pressure) parameter identification point.
After said electric sphygmomanometer was calibrated a given measured, the measured can select to use systolic pressure parameter identification point and diastolic pressure parameter identification point after calibrating to carry out automatic blood pressure measurement through the calibration selector switch.
As shown in Figure 1, electric sphygmomanometer includes: pressure-producing part 22,, inflatable part 24, vent valve 25, pressure transducer 26, difference amplifier 30, microprocessor 34 is set button 35, display 36 and calibration selector switch 37.Pressure-producing part 22 can be a hand air pump, also can be electric air pump.Inflatable part 24 can be the arm oversleeve.Vent valve 25 can be mechanical automatic blow off valve valve air relief or electromagnetism automatic blow off valve valve air relief.Pressure transducer 26 can be parts separately or integrated parts with difference amplifier 30.Pressure transducer 26 also can use capacitance type sensor and agitator to replace with difference amplifier 30.Display 36 can be LCD or LED numeral or figure escope.Setting button 35 can be to be generally open mode, and two ends are high potential, when setting button 35 is pressed, sets and forms a short circuit in the button 35, makes voltage become electronegative potential by high potential, thereby sends a signal to microprocessor 34.The time of this signal received record by microprocessor 34.Calibration selector switch 37 can be a two-period form switch, and this two-period form switch points to general calibration mode (to the pattern of crowd's calibration) and individual calibration mode (to the pattern of individual's calibration) respectively.When calibration selector switch 37 pointed to general calibration mode, calibration selector switch 37 sent a low-potential signal to microprocessor 34; When calibration selector switch 37 pointed to individual calibration mode, calibration selector switch 37 sent a high potential signal to microprocessor 34.Calibration selector switch 37 also can be a multisection type switch, points to general calibration mode respectively, individual calibration mode 1, and individual calibration mode 2, or the like, its different sensings can be by the different I/O mouth monitoring of microprocessor 34, to distinguish different measured.34 li of microprocessors can also contain the memory of individual parameter identification point of general parameters identification point (for example 0.55 and 0.72) and the individual calibration mode of a general calibration mode of storage.Memory can be EEPROM (EEPROM).
As shown in Figure 1, when said electric sphygmomanometer began to measure blood pressure, the pressure in the inflatable part 24 was measured by pressure transducer 26; After the pressure signal that pressure transducer 26 is produced carries out the difference amplification by difference amplifier 30; Output to and comprise signals collecting (mould/number conversion), the microprocessor 34 of functions such as processing and control; 34 pairs of pressure signals of microprocessor write down laggard row operation and handle, and the result is shown on display 36.Said electric sphygmomanometer can be measured blood pressure automatically through oscillographic method commonly used, shows measurement result then.If calibration selector switch 37 points to electronegative potential, carry out in the calculation process at 34 pairs of pressure signals of microprocessor, microprocessor 34 will use the general parameters identification to carry out pressure value and calculate; If calibration selector switch 37 points to high potential, microprocessor 34 will use individual parameter identification point to carry out pressure value and calculate.
As shown in Figure 2, a manual pressure, automatic blood pressure measurement has only a calibration software program flow diagram of setting the electric sphygmomanometer of button to comprise the steps:
A) initialization 42: comprise the time that show value and the record display device 34 on the display 34 that is updated among Fig. 1 upgrades.These initial values are generally zero.
B) data obtain 44: the pressure P (t) in the pneumatic sleeve in Fig. 1 24 that pressure transducer 26 obtains when current time t.
C) pressure period judges 46: the size of more current pressure P (t) and previous pressure P (t-Δ T), Δ T was preferably 1 second between 0.5 to 1.5 second.If P (t) goes out a given pressure value added greatly unlike P (t-Δ T), judge pressure periods 42 end so, the pressure in the pneumatic sleeve 24 are in decompression phase, and program is jumped into step f); If P (t) goes out a given pressure value added greatly than P (t-Δ T), judge that the pressure in the pneumatic sleeve 24 is in the pressure period, continue step b) to d).Said given pressure value added can be between 5mmHg to 10mmHg.
D) pressure display upgrades 48: on the display 36 of pressure data P (t) update displayed that microprocessor 34 is collected in the figure one.
E) continuous repeating step b) to d) judge that up to step c) pressurized state finishes.
F) set the button input and judge 50: judge whether set button 35 sends signal.As do not have, program is moved towards step h).
G) set button and write down 52 input time: 34 pairs of microprocessors receive that time t1 or the t3 when setting the signal that button 35 sends carries out record.As shown in Figure 3, t1 is for hearing for the first time the time of Ke Shiyin, i.e. the time of systolic pressure Pa generation; T3 is the time that hears the last of Ke Shiyin, i.e. the time of diastolic pressure Pc generation.The difference of t1 and t3 is, t1 occurs in before the time t2 that pulse wave envelope maximum P2 takes place, and after t3 occurs in.
H) blood pressure measurement 54: use oscillographic method to carry out blood pressure measurement (the blood pressure measurement program is familiar with by professional quarters, does not describe at this).
I) pressure display upgrades 64: on the display 36 of pressure data P (t) update displayed that microprocessor 34 is collected in Fig. 1.
J) blood pressure measurement finishes to judge 56: the pressure in inflatable oversleeve 24 drops to below the 5mmHg, judges that then blood pressure measurement finishes.Blood pressure measurement finishes to judge that 56 also can judge that blood pressure measurement finishes according to the information that blood pressure measurement 54 provides.Do not finish like blood pressure measurement, program step constantly repeats b) to j) up to step j) judge that blood pressure measurement finishes.
K) blood pressure measurement shows 58 before the calibration: the pressure value result that microprocessor 34 will calculate according to the general parameters identification point of general calibration mode shows on display 36.The demonstration time can be at 5-30 between second.
L) individual parameter identification point calculates 60: microprocessor 34 during according to t1 as shown in Figure 3 and t3 the maximum P2 on pulse wave-amplitude envelope point value P1 and P3 and the pulse wave amplitude envelope line calculate individual parameter identification point.Individual's parameter identification point is divided into: individual systolic pressure parameter identification point and individual diastolic pressure parameter identification point do.Individual's systolic pressure parameter identification point is P1/P2; Individual's diastolic pressure parameter identification point is P3/P2.
M) individual parameter identification point record 62: 34 couples of individual systolic pressure parameter identification point P1/P2 of microprocessor and individual diastolic pressure parameter identification point P3/P2 carry out record.
N) calibration back blood pressure The measured results show-64: the pressure value result that microprocessor 34 will calculate according to individual systolic pressure parameter identification point P1/P2 and individual diastolic pressure parameter identification point P3/P2 shows on display 36.The demonstration time can be at 5-30 between second.
O) EP (end of program) 66: electric sphygmomanometer finishes the blood pressure measurement calibration.
As shown in Figure 4, electric sphygmomanometer should just can use individual calibration mode to carry out automatic blood pressure measurement after carrying out individual's calibration.Calibration should be undertaken by the operator of Ke's formula sound method professional training by one.The operator regulates calibration selector switch 37, makes calibration selector switch 37 point to individual calibration mode.The operator ties up inflatable part 24 on measured's arm, inflates through 22 pairs of inflatable part 24 of pressure-producing part then.After the pressure in the inflatable part 24 reaches target pressure value (goal pressure generally exceeds 20-40mmHg than measured's systolic pressure or title high pressure), stop pressurization, vent valve 25 beginnings are exitted with the speed of per second 3 to 5mmHg to inflatable part 24 effectively.The sound that this moment, the operator used the tremulous pulse of stethoscope under inflatable part 24 to send is monitored; When hearing first Ke Shi sound (pressure in the inflatable part 24 is systolic pressure Pa at this moment), click and set button 35, set button 35 and send a signal in microprocessor 34.34 pairs of microprocessors receive that the time t1 of this signal carries out record; The operator clicks when hearing last Ke Shi sound (pressure in the inflatable part is diastolic pressure Pc at this moment) again and sets button 35, sets button 35 and sends a signal to microprocessor 34.34 pairs of microprocessors receive that the time t3 of this signal carries out record, and microprocessor 34 is noted measured's pulse wave amplitude and inflatable part 24 pressure at each time point simultaneously.Microprocessor 34 carries out the calculating of individual systolic pressure parameter identification point and individual diastolic pressure parameter identification point according to data recorded.
Individual systolic pressure parameter identification point that microprocessor 34 will calculate and individual diastolic pressure parameter identification point are noted; When electric sphygmomanometer was measured blood pressure to this single-minded measured, the measured can calculate through the measurement that calibration selector switch 37 selects electric sphygmomanometer will use general parameters identification point or individual parameter identification point to carry out blood pressure.When changing the measured, electric sphygmomanometer need carry out the setting of individual parameter identification point again to new measured, could use individual calibration mode to measure blood pressure automatically.Otherwise can only use general calibration mode to measure blood pressure automatically, the measurement of promptly using the general parameters identification point to carry out blood pressure is calculated.
When describing this invention with illustrative scheme, this description is not limited on the limited meaning of being explained.To the difference transformation of illustrative approach, and other creationary scheme, be obvious for the people who grasps above-mentioned technology.Therefore, can expect that any transformation or specific scheme all will drop in the true scope of the present invention.
Claims (7)
1. the calibration steps of oscillographic method blood pressure measurement; It is characterized in that comprising: for the oscillographic method electric sphygmomanometer that comes calculating blood pressure according to the envelope and the relation between the inflatable part pressure of pulse wave amplitude; The operator can be when Ke Shiyin takes place; Through using setting button on the said electric sphygmomanometer to confirm measured's individual parameter identification point, said electric sphygmomanometer is calibrated to the individual; The parameter identification point setting program that said electric sphygmomanometer comprises microprocessor and in said microprocessor, is equipped with; Said setting button starts the parameter identification point setting program in the microprocessor; Thereby obtain the distinctive individual parameter identification point of measured; And the distinctive individual parameter identification point of this measured is stored in the memory in the said electric sphygmomanometer, use in order to said measured.
2. the calibration steps of oscillographic method blood pressure measurement according to claim 1 is characterized in that: said parameter identification point comprises systolic pressure parameter identification point, and/or diastolic pressure parameter identification point.
3. the calibration steps of oscillographic method blood pressure measurement according to claim 1; It is characterized in that: said through using the setting button to confirm that measured's individual parameter identification point comprises: as when systolic pressure Ke formula sound time of origin and diastolic pressure Ke formula sound time of origin, to produce systolic pressure time signal and diastolic pressure time signal respectively through the setting button on the said sphygomanometer; The microprocessor of said electric sphygmomanometer calculates envelope point value P1 corresponding with it on the envelope of pulse wave amplitude according to the systolic pressure time signal, calculates envelope point value P3 corresponding with it on the envelope of pulse wave amplitude according to the diastolic pressure time signal; Microprocessor calculates the envelope maximum P2 of pulse wave amplitude simultaneously; With the merchant of P1/P2 systolic pressure parameter identification point, with the merchant of P3/P2 diastolic pressure parameter identification point as said sphygomanometer as said sphygomanometer.
4. electric sphygmomanometer is characterized in that comprising: at least one parameter identification point is set button, and said setting button can start the parameter identification point setting program in the microprocessor, thus the distinctive individual parameter identification point of acquisition measured; The preparation method of said individual parameter identification point is: behind the systolic pressure Ke formula sound time of origin and diastolic pressure Ke formula sound time of origin generation systolic pressure time signal and diastolic pressure time signal that said setting button is confirmed according to Ke's formula sound method; The microprocessor of said electric sphygmomanometer is through said systolic pressure time signal and said diastolic pressure time signal, and the corresponding point value on the envelope of acquisition pulse wave amplitude calculates.
5. electric sphygmomanometer according to claim 4; It is characterized in that: when said electric sphygmomanometer includes only a setting button; Same setting button can be used to set systolic pressure and two parameter identification points of diastolic pressure; Systolic pressure Ke formula sound time of origin formerly, diastolic pressure Ke formula sound time of origin after.
6. electric sphygmomanometer according to claim 4; It is characterized in that: when said electric sphygmomanometer includes two setting buttons; Set button for one and can be used to set systolic pressure parameter identification point, another sets button can be used to set diastolic pressure parameter identification point.
7. electric sphygmomanometer according to claim 4 is characterized in that: comprise a calibration selector switch, to select to use different parameter identification points.
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| WO2011066680A1 (en) * | 2009-12-01 | 2011-06-09 | Precision Medical Technology Ltd. | Apparatus and calibration method for blood pressure measurement |
| CN102293642A (en) * | 2011-08-04 | 2011-12-28 | 浙江富美家健康科技有限公司 | Blood pressure measuring method and blood-pressure meter implementing method |
| CN103417204B (en) * | 2013-08-29 | 2015-04-08 | 无锡市计量测试中心 | Human body simulation and calibration device of oscilloscope electronic sphygmomanometer |
| CN105266784A (en) * | 2014-06-05 | 2016-01-27 | 明仲 | Oscillography-based blood pressure measuring method and device |
| EP3187106A4 (en) * | 2014-08-29 | 2018-04-18 | Zhou, Jialu | Blood pressure measuring auxiliary device, blood pressure measuring device, and design method therefor |
| CN105595983B (en) * | 2015-11-26 | 2018-06-05 | 北京戴美柯技术开发有限公司 | A kind of blood pressure measuring device and the method for improving blood pressure measurement accuracy |
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