CN102462492A - Blood pressure measuring device - Google Patents

Abstract

The invention discloses a blood pressure measuring device. After a pressure vibration signal detected by a pressure sensor on a cuff is acquired and subjected to proper signal processing, personal information input by a testee is matched, or no information is input by the existing sphygmomanometer, and the testee actively selects the characteristic coefficients of the contractive pressure and diastolic pressure corresponding to applicable arterial pressure, thereby judging the contractive pressure and diastolic pressure more accurately; and thus, the users at different ages with different body quality indexes and different medical history backgrounds can flexibly adjust the algorithm to accurately and correctly judge and read the blood pressure, thereby reducing the sphygmomanometer misjudgement probability, greatly saving the waste of medical resources and implementing personalized blood pressure measurement suitable for users in a more accurate and customized way.

Description

Blood pressure measurement device

Technical field

The present invention is relevant with blood pressure measuring, particularly about a kind of device of blood pressure measuring.

Background technology

Automatic blood pressure measuring equipment with Citron company is an example; In U.S. Pat 4; In 638, No. 810, be the maximum oscillator signal fixed proportion that goes up on duty that utilization fixed coefficient method will write down; Systolic pressure and diastolic pressure are found out in computing, but the fixed coefficient method is prone to erroneous judgement blood pressure (asking literary composition in this patent of self-reference).

And count example with the electronic blood pressure of Osachi company, and in European patent EP 642, in 760A1 number, except that can measuring the blood pressure, and can be through the concussion waveform separation by measurement person's situation (please this patent of self-reference in literary composition); But patent can know that people's health status can influence blood pressure waveform thus, and makes blood pressure judge that difficulty increases.

Electronic blood pressure with Omron company is counted example; In Chinese patent CN1449718A number; Utilization wave character amount size, relative cuff press size and probability density to estimate systolic pressure during pressure process, and add that with this pressure a certain pressure difference is initial release pressure (asking literary composition in this patent of self-reference); But pressure process time weak point before the measurement blood pressure is difficult for accurately measuring blood pressure.

Electronic blood pressure with VSM Medtech company is counted example, in U.S. Pat 6,719, in No. 703, draws maximum blood vessel pressure value after handling the package signal, and estimates systolic pressure (and please simultaneously with reference to literary composition in this patent) by formula:

1.If(MAP?≤(90?to?110)mmHg)，then?PIP _SBP＝0.5?to?0.66；

Else?if(MAP≥(130?to?150)mmHg)，then?PIP _SBP＝0.3?to?0.46；

${\mathrm{PIP}}_{\mathrm{SBP}}=\mathrm{\α}-(\frac{\mathrm{\α}-\mathrm{\β}}{B-A}\×(\mathrm{MAP}-A)).$

$2.{\mathrm{PIP}}_{\mathrm{SBP}}=A-\frac{\mathrm{<figure-callout\; id="1"\; label="B"\; filenames="HSA00000349381100021.png,HSA00000349381100071.png"\; state="\{\{state\}\}">B</figure-callout>}}{1+{\mathrm{Ce}}^{(D\&times;\mathrm{MAP})}},$ $C=\left(\frac{1}{e^{(D\&times;E)}}\right).$

3.PIP _SBP＝A×MAP ³+B×MAP ²+C×MAP+D。

Though be not to use fixed coefficient, do not consider body-mass index (BMI), medical history, age factor, only consider how to measure better in the hypertension section.

Based on the problems referred to above, the inventor has proposed a kind of blood pressure measurement device, to overcome the defective of prior art.

Summary of the invention

The object of the invention is to provide a kind of blood pressure measurement device that can accurately obtain pressure value.

For reaching above-mentioned purpose; The present invention provides a kind of blood pressure measurement device, and this device comprises: a display device, a message input device, a microprocessor, an aerating device, a cuff, an air bleeding valve, a pressure transducer, a signal processing unit and a data processing unit.

And this kind blood pressure measurement device comprises following characteristic:

But this display device Show Options, and can import the physiology and the health and fitness information of user by this message input device, or select direct inlet measuring blood pressure; This microprocessor can give an order provides this cuff pressure to this aerating device; Behind a suitable pressure, stop inflation and disappointing by this air bleeding valve; And can use this pressure transducer to write down a pressure signal, the predetermined format that data operation can use after this pressure signal was become via this signal processing unit processes.

Description of drawings

Fig. 1 is the structure block chart of blood pressure measurement device of the present invention;

Fig. 2 is the flow chart of blood pressure measuring method of the present invention;

Fig. 3 judges the flow chart of adaptive coefficient, systolic pressure and diastolic pressure for the present invention;

Fig. 4 is the graph of a relation between the initial release pressure of cuff of the present invention and systolic pressure and the diastolic pressure;

Fig. 5 include two kinds of diseases for the present invention and when above to the scattergram of the relation of adaptive coefficient;

Fig. 6 is a measurement curve chart used in the present invention;

The result's that Fig. 7 is measured for the present invention and existing sphygomanometer comparison diagram.

Wherein, Reference numeral:

1 blood pressure measurement device

2 display devices

3 message input devices

4 microprocessors

5 aerating devices

6 cuffs

7 air bleeding valves

8 pressure transducers

9 signal processing units

10 data processing units

Step S1～S4 is according to the step of blood pressure measuring method of the present invention

The specific embodiment

Though the present invention has used several preferred embodiments to make an explanation, the attached drawings and the specific embodiment only are preferred embodiments of the present invention; What should explain is, below the disclosed specific embodiment only be example of the present invention, do not represent that the present invention is limited to the drawings as hereinafter and the specific embodiment.

Please be simultaneously with reference to figure 1 and Fig. 2, wherein, Fig. 1 is the structure block chart of blood pressure measurement device of the present invention, Fig. 2 is the flow chart of blood pressure measuring method of the present invention.

Blood pressure measurement device 1 comprises a display device 2, a message input device 3, a microprocessor 4, an aerating device 5, a cuff 6, an air bleeding valve 7, a pressure transducer 8 and a signal processing unit 9 and a data processing unit 10.

Its step comprises:

Step S1: user collocation display device 2 rendering preferences; Judge whether input information (step S11); If then, then directly get into blood pressure measuring, i.e. next step S2 if not by the physiology and the health and fitness information (step S12) of message input device 3 input user;

Step S2: being given an order by microprocessor 4 provides cuff 6 pressure to aerating device 5;

Step S3: behind suitable pressure, stop inflation and disappointing by air bleeding valve 7; And working pressure pick off 8 records one pressure signal; With the signal package that pressure signal is processed into via signal processing unit 9, this package is the form that a data operation can use, and goes forward side by side into microprocessor 4;

Step S4: microprocessor 4 collocation data processing units 10 are judged adaptive coefficient that user are fit to drawing user diastolic pressure and systolic pressure, and are presented in the display device 2.

The flow process of judging adaptive coefficient, systolic pressure and diastolic pressure is as shown in Figure 3; Mainly be to handle in the signal package (envelop) later by signal processing unit 9; Data processing unit 10 therefrom captures its mean vascular pressure (MAP) data, and selects suitable adaptive coefficient (first pattern or second pattern be a corresponding adaptive coefficient respectively) according to user through message input device 3 selected one first patterns (mode-1) or one second pattern (mode-2); Wherein first pattern is set at automatic mode (a-adaptive), select corresponding release according to user cuff 6 initial release pressures, and the relation of cuff 6 initial release pressures and systolic pressure and diastolic pressure is as shown in Figure 4.

Moreover second pattern among Fig. 3 is set at intelligent pattern (i-adaptive), selects suitable adaptive coefficient according to age of user input, height and weight (being converted into BMI), the medical history that once had; Wherein medical history can be generalized into health (normal), hypertension (hypertension), diabetes (diabetics), heart disease (heart disease), blood-related diseases (Blood; Like hyperlipidemia) etc. classification; And include two kinds of diseases and when above to the relation of adaptive coefficient, as shown in Figure 5.

And therefore healthy person (adaptive coefficient is a dotted line) and the adaptive coefficient that the people was suitable for that medical history arranged difference to some extent need to select automatically suitable compliance characteristics coefficient, to improve the blood pressure measuring accuracy.

Please refer to Fig. 6, be measurement curve chart used in the present invention; F wherein _Ev(t) be arterial pressure package characteristic curve, F _Cuff(t) be the cuff pressure curve, F _Ev(t ₁) be shown in time t ₁The time, maximum arterial pressure amplitude of vibration; Wherein:

(A) systolic pressure value

A _s＝F _ev(t ₁)*C _rs

A _sFor when cuff equals systolic pressure, the arterial pressure amplitude of vibration;

C _Rs: systolic pressure characteristic ratio, this value is the adaptability change, the change situation is following:

(1) there is not input personal information: C _Rs=a _s-b _s* max (F _Cuff);

(2) input age: C _Rs=c _s+ d _s/ x-e _s/ x ², x wherein: age;

(3) input height and weight: C _Rs=f _s-g _s* y+h _s* y ²-i _s* y ³, y=body weight/height wherein ²

(4) input medical history: C _RsBetween=0.3-0.8, look kinds of Diseases and determine;

F _Ev(t _s)=A _s, t wherein _s＜t ₁

t _sExpression equals the time point of systolic pressure when cuff;

SBP=F _Cuff(t _s), SBP representes the systolic pressure value;

(B) diastolic blood pressure values

A _d＝F _ev(t ₁)*C _rd

A _d: when cuff equals diastolic pressure, the arterial pressure amplitude of vibration;

C _Rd: diastolic pressure characteristic ratio, this value is the adaptability change, the change situation is following:

(5) there is not input personal information: C _Rd=a _d-b _d* max (F _Cuff);

(6) input age: C _Rd=c _d+ d _d/ x-e _d/ x ², x wherein: age;

(7) input height and weight: C _Rd=f _d-g _d* y+h _d* y ²-i _d* y ³, y=body weight/height wherein ²

(8) input medical history: C _RdBetween=0.35-0.85, look kinds of Diseases and determine;

F _Ev(t _d)=A _d, t wherein _d＞t ₁

t _dExpression equals the time point of diastolic pressure when cuff;

DBP=F _Cuff(t _d), DBP representes diastolic blood pressure values.

Please again with reference to figure 7, the result's who is measured for the present invention and existing blood pressure device comparison diagram; For checking effect of the present invention; The utilization measured center is existing can be according to (the Non-Invasive BloodPressure Simulation System of non-invasion blood pressure simulating measuring system of the common on the market non-intrusion type automatic sphygmomanometer of the clinical normative testing of EN1060-4; NIBP Simulator); Connect non-intrusion type automatic sphygmomanometer and NIBPSimulator respectively with T type pipe, simulation actual measurements arm blood pressure situation with being strapped in the cuff 6 that suitable column type does evil through another person on the arm.Whether this NIBP Simulator can come out the waveform repeat play of heart beating of writing down and blood pressure concussion when performing a programme, observe the sphygomanometer measuring value of tying up on the arm of doing evil through another person identical with the reference auscultation value that is write down simultaneously again.Shown in table; 255 information collection data recorded that meet the distribution of EN1060 standard blood pressure ratio are play by NIBP Simulator; With simulation fixed coefficient method (fixed), commercially available sphygomanometer (NIBP device 1 & 2) and blood pressure measurement device of the present invention 1 (adaptive) measure systolic pressure and diastolic pressure; Observe the mean difference and the standard deviation thereof of itself and record value; Can learn that mean difference of the present invention and standard deviation thereof are minimum, therefore can reach accurate measure blood pressure, and reduce the effect of the blood pressure measuring variation influence that various physiological health situations cause.

Though the present invention makes an explanation with relevant preferred embodiment, this is not construed as limiting the invention.What should explain is, those skilled in the art can construct a lot of other similar embodiment according to thought of the present invention, and these are all among protection scope of the present invention.

Claims (6)

1. a blood pressure measurement device is characterized in that, comprises a display device, a message input device, a microprocessor, an aerating device, a cuff, an air bleeding valve, a pressure transducer, a signal processing unit and a data processing unit, wherein:

This display device Show Options, and by the physiology and the health and fitness information of this message input device input user, or select direct inlet measuring blood pressure; Give an order by this microprocessor again and this cuff pressure is provided to this aerating device; Behind a suitable pressure, stop inflation and disappointing by this air bleeding valve; And use this pressure transducer to write down a pressure signal, the predetermined format that data operation can use after this pressure signal was become via this signal processing unit processes.

2. a blood pressure measurement device is characterized in that, comprises a display device, a message input device, a microprocessor, an aerating device, a cuff, an air bleeding valve, a pressure transducer, a signal processing unit and a data processing unit, wherein:

This signal processing unit is used for the pressure signal of detected this cuff of this pressure transducer is processed into a signal package;

This data processing unit is used for from this signal package acquisition one mean vascular pressure data;

This message input device is used to supply user to select one first pattern or one second pattern, and this first pattern or second pattern be a corresponding adaptive coefficient respectively;

This data processing unit and this microprocessor cooperate will selected this adaptive coefficient and an average artery pressure value mutually behind the multiplication, with the systolic pressure that draws measurement and a diastolic pressure also demonstration to this display device.

3. blood pressure measurement device as claimed in claim 2 is characterized in that, this first pattern is an automatic mode, selects this corresponding adaptive coefficient according to the initial release pressure of this cuff that is set in user, to measure this systolic pressure and this diastolic pressure.

4. blood pressure measurement device as claimed in claim 2 is characterized in that, this second pattern is intelligent pattern, according to age, the height and weight of user input, uses and selects this suitable adaptive coefficient and judge this systolic pressure and this diastolic pressure.

5. blood pressure measurement device as claimed in claim 4; It is characterized in that; This second pattern for intelligent pattern; Further comprise the medical history option that once had, wherein this medical history in this medical history option that once had comprises health, hypertension, diabetes, heart disease, blood-related diseases or its combination at least, uses and selects this suitable adaptive coefficient and judge this systolic pressure and this diastolic pressure.

6. blood pressure discriminating gear; It is characterized in that; This device comprises a display device, a message input device, a microprocessor, an aerating device, a cuff, an air bleeding valve, a pressure transducer, a signal processing unit, a data operation unit and a data processing unit, wherein:

This display device Show Options; And by the physiology and the health and fitness information of this message input device input user; Or select directly to get into blood pressure measuring, and give an order by this microprocessor again and this cuff pressure is provided to this aerating device, behind a suitable pressure, stop inflation and disappointing by this air bleeding valve; And use this pressure transducer to write down a pressure signal; The form that data operation can use after this pressure signal become via this signal processing unit processes to be getting into this microprocessor, and this data processing unit of arranging in pairs or groups judges the adaptive coefficient that user is fit to and draw a diastolic pressure and a systolic pressure of user, is presented in this display device.

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