CN100566653C - Blood pressure dynamic measuring and trend analysis observation system - Google Patents

Abstract

The present invention relates to a kind of blood pressure dynamic measuring and trend analysis observation system.This system is mainly by some cufves, the pick off of each cuff and electronic-controlled installation constitute, be equipped with air bag in described each cuff, described each air bag all connects air pump and air valve separately by air conduit, described electronic-controlled installation is provided with CPU, remote communication module and connection air pump, the control circuit of air valve and pick off and signal line, described CPU is accepted the control instruction that remote communication module is sent here, and under the control of pre-set programs and control instruction, sending measurement and analytical information to remote communication module, described remote communication module is carried out the information transmission according to the instruction of remote control commands and CPU.This method adopts two cufves to carry out the blood pressure signal measurement and carries out telecommunication by remote communication module.Measurement error of the present invention is little, and is easy to use, and can carry out kinetic measurement and telecommunication, and it is mainly used in static measurement, kinetic measurement and the trend analysis of blood pressure.

Description

Blood pressure dynamic measuring and trend analysis observation system

Technical field

The present invention relates to a kind of blood pressure dynamic measuring and tendency analyzing observation method and system, belong to the Medical Instruments technical field.

Technical background

Existing electronic blood pressure measurement device is mainly by cuff, the pick off of cuff and electronic-controlled installation constitute, be provided with air bag in the described cuff, described air bag connects air pump and air valve by air conduit, the CPU that described electronic-controlled installation is provided with also is provided with the control circuit and the signal line that is connected pick off that connects air pump, give airbag aeration by electronic-controlled installation control air pump during use, in cuff, form certain pressure with the blocking-up vascular flow, exit gradually by the air valve that is connected in air conduit then, obtain systolic pressure and diastolic pressure signal successively by pick off, deliver to CPU and carry out analyzing and processing, and can show and/or the printing testing result by display and/or printer.The defective one of this device is to carry out long-range data transmission, uses inconvenient; The 2nd, can not carry out kinetic measurement, the limitation during application is bigger; The 3rd, the blood that is positioned at cuff top (near heart side) springs up the interference that can form systolic pressure, influences the accuracy of measurement result.

Summary of the invention

For overcoming the above-mentioned defective of prior art, the invention provides a kind of blood pressure dynamic measuring and tendency analyzing observation method and a kind of blood pressure dynamic measuring and trend analysis observation system, after adopting this method and this system, can communicate with remote terminal, accept the instruction of remote terminal and measurement data is sent to remote terminal, also can control survey also obtain measurement result immediately when the doctor is not on-site, be very easy to use; Can also carry out kinetic measurement and analysis, for diagnosis provides more effective and comprehensive data; The systolic pressure that records with this system influence that not sprung up by blood by this method, error is little.

The present invention realizes that the technical scheme of above-mentioned purpose is:

A kind of blood pressure dynamic measuring and trend analysis observation system, mainly by some cufves, pick off in each cuff and electronic-controlled installation constitute, be equipped with air bag in described each cuff, described each air bag all connects air pump and air valve separately by air conduit, described electronic-controlled installation is provided with CPU and is provided with the control circuit that connects air pump, the some control circuits and the some signal lines that are connected each pick off respectively that connect each air valve respectively, described electronic-controlled installation also is provided with remote communication module, described CPU is accepted the control instruction (comprising process of measurement) that remote communication module is sent here, and under the control of pre-set programs and control instruction, sending measurement and analytical information to remote communication module, described remote communication module is carried out the information transmission according to the instruction of remote control commands and CPU.

Described CPU can be under the control of pre-set programs and external control instruction, move and accept sensor signal by control air pump and each air valve, control system is carried out disposable measurement or kinetic measurement, accept the measuring-signal of pick off and analyze, draw measurement and analytical informations such as measurement data, Measurement and analysis curve.

Can be respectively equipped with amplifying circuit and analog to digital conversion circuit between described each pick off and the central control unit, be used for the analogue signal that pick off is sent is amplified and is converted into digital signal, so that CPU is carried out digitized processing.

The quantity of described cuff can be two usually, is respectively cuff 1 and cuff 2, and the air bag in each cuff can connect same air pump by air conduit, also can connect air pump separately respectively.

Operation principle of the present invention is: when output device (for example button) that CPU (CPU) carries from remote communication module (wireless communication module GPRS or other) or electronic-controlled installation itself receive measure instruction after, at first controlling air pump inflates to two cufves, stop inflation after reaching the air pressure that requires separately, CPU control air valve is exitted respectively.The pick off of each cuff (pick off 1 and the pick off 2) pressure with cuff 1 and cuff 2 respectively becomes voltage signal, and pass to each self-corresponding amplifying circuit 1 and amplifying circuit 2 respectively, after analog digital conversion (AD), analyze computing by central processor unit (CPU).In the measuring process, CPU is according to the analysis to sensor signal, catch various interference and real-time judge venting conditions such as pulse, the artificial shake of eliminating, when pressure during less than diastolic pressure air valve all open, venting fast, and calculating systolic pressure, diastolic pressure, mean pressure and pulse, wake remote communication module (as GPRS) then up, result of calculation and initial data and waveform are mail to server, be distributed to the fixed hospital by server, the doctor can do analyses more accurate, more items to data once more, as the arteriosclerosis assessment, and can be by doctor's manual intervention.

The invention has the beneficial effects as follows: owing to be provided with the remote communication module mutual with CPU, can send to electronic-controlled installation by remote terminal and measure control instruction, carrying out disposable or periodic ambulatory blood pressure measures, tested personnel can stay at home or sick bed separately on measure, and measurement result sends to remote terminal by remote communication module, just can be grasped the tested personnel's that are positioned at some different places measurement situation at remote terminal by the doctor; Because CPU of the present invention can control system be carried out periodic kinetic measurement, and measurement data carried out analyzing and processing, generate various analytical curves and analytical data, not only avoided the occasionality of disposable measurement data, but also can understand tested personnel's blood pressure process, for diagnosis and treatment provide more comprehensive data; Owing to be provided with two cufves, the cuff that is positioned at the top during measurement can blocking blood flow, make the cuff of below not be subjected to the impact that blood gushes and influence, and has eliminated blood and has gushed influence to measurement result.

Description of drawings

Fig. 1 is a structural representation of the present invention.

The specific embodiment

Referring to Fig. 1, blood pressure dynamic measuring provided by the invention and trend analysis observation system are mainly by some cufves, pick off in each cuff and electronic-controlled installation constitute, be equipped with air bag in described each cuff, described each air bag all connects air pump and air valve separately by air conduit, described electronic-controlled installation is provided with CPU and remote communication module, and be provided with the control circuit that connects air pump, the some control circuits and the some signal lines that are connected each pick off respectively that connect each air valve respectively, described CPU is accepted the control instruction that described remote communication module is sent here, and under the control of pre-set programs and external control instruction, sending measurement and analytical information to remote communication module, described remote communication module is carried out the information transmission according to the instruction of remote control commands and CPU.

Described remote communication module can adopt wireless communication module GPRS usually, utilizes public mobile network to carry out telecommunication.Also can adopt infrared, bluetooth, ZIGBEE communication modes that information is passed in mobile phone, send modes such as also available wired Internet or voice call by the GPRS function of mobile phone.Between described remote communication module and the described CPU be connected and signal transmission and control mode can adopt prior art or other possible technology.

Described CPU can be under the control of pre-set programs and external control instruction, by control air pump and each air valve action and acceptance and analyte sensors signal, control system is carried out disposable measurement or kinetic measurement, accept the measuring-signal of pick off and analyze, draw measurement and analytical informations such as measurement data, Measurement and analysis curve.The work process successively of described central processing unit controls air pump, air valve should be set according to the needs of measuring, can adopt prior art, wherein the deflation course of air valve is determined according to the pressure signal of sensor acquisition by CPU, and determines the data collection point of systolic pressure and diastolic pressure in deflation course according to the conversion of pressure signal.

Can be provided with amplifying circuit and analog to digital conversion circuit (AD) between described each pick off and the central control unit, be used for the analogue signal of sensor acquisition is amplified and is converted into digital signal, so that CPU is carried out digitized processing.

The quantity of described cuff can be two usually, is respectively cuff 1 and cuff 2.The quantity of described air pump can be one usually, and with simplified structure, the air bag in each cuff is connected with this air pump by air conduit, by this air pump simultaneously to each airbag aeration.The pressure signal that described CPU is sent here pick off is analyzed computing, and when the intracapsular pressure of each cuff all reached requirement, the control air pump stopped the fortune dress, and opened the air valve venting according to setting program.The quantity of described air pump also can be two, so that the air bag air feed respectively in each cuff when the intracapsular pressure in the cuff meets the requirements, just can make corresponding air pump stop inflation, can control more accurately like this.

Be simplified structure, described cuff also can be one.

When adopting up and down two cufves, described CPU is analyzed comparison to the measurement data that comes from each cuff, calculate the derivative of cuff 1 and cuff 2 pulsation envelopes respectively, the big person of differentiation is as effective numerical value calculating blood pressure parameter, at pressure during greater than systolic pressure, because blood vessel is blocked, first cuff is sprung up by blood flow to be influenced, and second cuff is not influenced by this, therefore when no blood very big by pulsation amplitude of variation when having blood flow to pass through, its change point is obvious, thus accurate calculating blood pressure parameter.

Can also be provided with the press key input device supporting, display (preferred liquid crystal display) and/or printer etc. in the described electronic-controlled installation, to be respectively applied for on-the-spot instruction input, measurement result demonstration and printing as a result etc. with described central control unit.Can select various configuration modes as required neatly.

When carrying out kinetic measurement or period measurement, described CPU according to pre-set programs or long-range setting program and control instruction periodically control system measure (comprise that air pump starts and stops, air valve opening and closing, sensor data acquisition and read, date processing and analysis etc.), generate measurement data and the analysis result of each stipulated time, and these are measured and analytical information is stored in the memorizer of electronic-controlled installation, according to pre-set programs and control instruction, control described telecommunication module and measure long-range transmission with analytical information.

Measurement and analytical information for each stipulated time, CPU can also be carried out statistical calculation and trend analysis according to pre-set programs and control instruction, and the assembly average of interior each blood pressure parameter of generation certain hour section etc. is analyzed chart and curves such as assessed value and development trend matched curve.Wherein the computing formula of assembly average is:

$\stackrel{\‾}{\mathrm{Sn}}=\frac{1}{m}\underset{i=1}{\overset{m}{\mathrm{\Σ}}}\mathrm{Sn}\left(i\right)$

$\stackrel{\‾}{\mathrm{Dn}}=\frac{1}{m}\underset{i=1}{\overset{m}{\mathrm{\Σ}}}\mathrm{Dn}\left(i\right)$

$\stackrel{\‾}{\mathrm{Pn}}=\frac{1}{m}\underset{i=1}{\overset{m}{\mathrm{\Σ}}}\mathrm{Pn}\left(i\right)$

M is n days a measurement total degree in the formula, Sn (i), Dn (i), Pn (i) are respectively n days the i time and measure systolic pressure, diastolic pressure and the pulse frequency that obtains, Sn, Dn, Pn are respectively the assembly average of n days systolic pressures, diastolic pressure and pulse frequency measurement results, these data have been avoided the occasionality of one-shot measurement, represented the real overall state of blood pressure, diagnosis has been had more reference value.

The matched curve of blood pressure development trend can be an abscissa with time, is vertical coordinate with the blood pressure parameter, adopts method of least square to carry out curve fitting, so that provide the situation of change of blood pressure intuitively.The minimum time span can be the sky usually, generally can be month or year, Guan Ce time length and deciding as required.When carrying out the analysis of trend in sky, the blood pressure parameter data can be the measurement data each time in this interval, when carrying out the analysis of trend of Month And Year, the blood pressure parameter data can be the assembly averages of every day, also can be the data of measuring each time every day.These analyses can adopt prior art to carry out under the support of software.

Native system can also calculate automatically and generate other analysis and evaluation values, wherein mainly comprises systolic pressure trend coefficient, diastolic pressure trend coefficient and pressure reduction coefficient.

Be the relatively blood pressure of different time or the comparison of medication effect, described CPU is carried out the computing of trend coefficient according to pre-set programs and control instruction (comprising parameter setting instruction) control system, and its operational formula is:

${\mathrm{\ρ}}_s=\frac{\underset{i=1}{\overset{m}{\mathrm{\Σ}}}(S_1\left(i\right)-S_2\left(i\right))}{\underset{i=1}{\overset{m}{\mathrm{\Σ}}}{S}_1\left(i\right)}$

${\mathrm{\ρ}}_d=\frac{\underset{i=1}{\overset{m}{\mathrm{\Σ}}}(D_1\left(i\right)-D_2\left(i\right))}{\underset{i=1}{\overset{m}{\mathrm{\Σ}}}{D}_1\left(i\right)}$

In the formula: ρ _s, ρ _dBe respectively the trend coefficient of systolic pressure and systolic pressure, S ₁(i), S ₂(i) be respectively the i time measured value of first group and the second group systolic pressure that is used for analytic trend, D ₁(i), D ₂(i) be respectively the i time measured value of first group and the second group systolic pressure that is used for analytic trend.The implication of trend coefficient is the ratio of the overall variable quantity of blood pressure with blood pressure values, zero is overall no change, just be overall the rising, be overall decline, can pass through the mode of external command (parameter setting) as required, choose two groups of suitable measurement data at former and later two time periods or time point (for example before and after the medication) and carry out trend analysis, variation tendency with two time points (or time period) blood pressure of showing these two groups of data representatives, variation tendency is carried out quantitative description, to help PD or medication effect are made judgement more accurately.In case of necessity, can also make comparison chart or curve to some trend coefficients, so that directly perceived the observation according to pre-set programs and control instruction.The making of these charts or curve and demonstration can be adopted prior art.

Because the pressure reduction of human blood-pressure has certain limit, too for a short time too greatly being unusually, be quantificational expression and the variation of analysis pressure reduction, described CPU is carried out the computing of pressure reduction coefficient according to pre-set programs and control instruction (comprising parameter setting instruction) control system, and its operational formula is:

$\mathrm{\σ}=\frac{\underset{i=1}{\overset{m}{\mathrm{\Σ}}}(S\left(i\right)-D\left(i\right))}{\underset{i=1}{\overset{m}{\mathrm{\Σ}}}\mathrm{MAP}\left(i\right)}$

σ is the pressure reduction coefficient in the formula, S (i), D (i) are respectively the i time and measure systolic pressure and the diastolic pressure that obtains, MAP (i) is the i time mean arterial pressure of measuring, under the support of pre-set programs, calculate generation by central processing unit according to sensor signal, if do not set this CALCULATION OF PARAMETERS program, can adopt following formula to calculate:

$\mathrm{MAP}\left(i\right)=\frac{1}{3}S\left(i\right)+\frac{2}{3}D\left(i\right).$

Claims (9)

1. blood pressure dynamic measuring and trend analysis observation system, mainly by some cufves, the pick off of each cuff and electronic-controlled installation constitute, be equipped with air bag in described each cuff, described each air bag all connects air pump and air valve separately by air conduit, described electronic-controlled installation is provided with CPU, and be provided with the control circuit that connects air pump, the some control circuits and the some signal lines that are connected each pick off respectively that connect each air valve respectively, it is characterized in that also being provided with remote communication module, described CPU communicates by remote communication module and remote terminal, accept the control instruction that described remote communication module is sent here, and under the control of pre-set programs and external control instruction, send measurement and analytical information to remote communication module, described remote communication module is carried out the information transmission according to the instruction of remote control commands and CPU, each sensor acquisition to blood pressure signal through amplification and analog digital conversion after send into described CPU, carry out data analysis by CPU, described CPU is analyzed comparison to the measurement data that comes from each cuff, calculate the derivative of the pulsation envelope of each cuff respectively, the big person of differentiation is as effective numerical value calculating blood pressure parameter.

2. blood pressure dynamic measuring as claimed in claim 1 and trend analysis observation system, it is characterized in that described CPU is under the control of pre-set programs and external control instruction, by control air pump and each air valve action and acceptance and analyte sensors signal, control system is carried out disposable measurement or kinetic measurement, accept the measuring-signal of pick off and analyze, draw measurement and analytical informations such as measurement data, Measurement and analysis curve.

3. blood pressure dynamic measuring as claimed in claim 2 and trend analysis observation system, it is characterized in that being provided with amplifying circuit and analog to digital conversion circuit between described each pick off and the central control unit, be used for the analogue signal of sensor acquisition is amplified and is converted into digital signal, so that CPU is carried out digitized processing, also be provided with press key input device, display and/or the printer supporting in the described electronic-controlled installation, print to be respectively applied for on-the-spot instruction input, measurement result demonstration and result with described central control unit.

4. blood pressure dynamic measuring as claimed in claim 2 and trend analysis observation system, the quantity that it is characterized in that described cuff are two or one, and the quantity of described air pump is one or two.

5. as claim 2,3 or 4 described blood pressure dynamic measurings and trend analysis observation system, it is characterized in that described cuff is two cufves up and down, described CPU is analyzed comparison to the measurement data that comes from each cuff, calculate the derivative of cuff 1 and cuff 2 pulsation envelopes respectively, the big person of differentiation is as effective numerical value calculating blood pressure parameter.

6. as claim 2,3 or 4 described blood pressure dynamic measurings and trend analysis observation system, it is characterized in that when carrying out kinetic measurement or period measurement, described CPU according to pre-set programs or long-range setting program and control instruction periodically control system measure, generate measurement data and the analysis result of each stipulated time, and these are measured and analytical information is stored in the memorizer of electronic-controlled installation, according to pre-set programs and control instruction, control described telecommunication module and measure long-range transmission with analytical information.

7. blood pressure dynamic measuring as claimed in claim 6 and trend analysis observation system, it is characterized in that measurement and analytical information for each stipulated time, CPU is carried out statistical calculation and trend analysis according to pre-set programs and control instruction, generates the analysis and assessment value and the development trend matched curves such as assembly average of each blood pressure parameter in the certain hour section.

8. blood pressure dynamic measuring as claimed in claim 7 and trend analysis observation system is characterized in that the computing formula of described assembly average is:

$\stackrel{\‾}{\mathrm{Sn}}=\frac{1}{m}\underset{i=1}{\overset{m}{\mathrm{\Σ}}}\mathrm{Sn}\left(i\right)$

$\stackrel{\‾}{\mathrm{Dn}}=\frac{1}{m}\underset{i=1}{\overset{m}{\mathrm{\Σ}}}\mathrm{Dn}\left(i\right)$

$\stackrel{\‾}{\mathrm{Pn}}=\frac{1}{m}\underset{i=1}{\overset{m}{\mathrm{\Σ}}}\mathrm{Pn}\left(i\right)$

M is n days a measurement total degree in the formula, Sn (i), Dn (i), Pn (i) are respectively n days the i time and measure systolic pressure, diastolic pressure and the pulse frequency that obtains, Sn, Dn, Pn are respectively the assembly average of n days systolic pressures, diastolic pressure and pulse frequency measurement results, the matched curve of described blood pressure development trend is abscissa with time, with the blood pressure parameter is vertical coordinate, adopts method of least square to carry out curve fitting.

9. blood pressure dynamic measuring as claimed in claim 7 and trend analysis observation system, it is characterized in that described analysis and assessment value also comprises systolic pressure trend coefficient, diastolic pressure trend coefficient and pressure reduction coefficient, described CPU is carried out the computing of systolic pressure trend coefficient, diastolic pressure trend coefficient and pressure reduction coefficient according to pre-set programs and control instruction control system, and the operational formula of wherein said systolic pressure trend coefficient and diastolic pressure trend coefficient is respectively:

${\mathrm{\ρ}}_S=\frac{\underset{i=1}{\overset{m}{\mathrm{\Σ}}}(S_1\left(i\right)-S_2\left(i\right))}{\underset{i=1}{\overset{m}{\mathrm{\Σ}}}{S}_1\left(i\right)}$

${\mathrm{\ρ}}_d=\frac{\underset{i=1}{\overset{m}{\mathrm{\Σ}}}(D_1\left(i\right)-D_2\left(i\right))}{\underset{i=1}{\overset{m}{\mathrm{\Σ}}}{D}_1\left(i\right)}$

In the formula: ρ _s, ρ _dBe respectively the trend coefficient of systolic pressure and systolic pressure, S ₁(i), S ₂(i) be respectively the i time measured value of first group and the second group systolic pressure that is used for analytic trend, D ₁(i), D ₂(i) be respectively the i time measured value of first group and the second group systolic pressure that is used for analytic trend;

The operational formula of described pressure reduction coefficient is:

$\mathrm{\σ}=\frac{\underset{i=1}{\overset{m}{\mathrm{\Σ}}}(S\left(i\right)-D\left(i\right))}{\underset{i=1}{\overset{m}{\mathrm{\Σ}}}\mathrm{MAP}\left(i\right)}$

σ is the pressure reduction coefficient in the formula, S (i), D (i) are respectively the i time and measure systolic pressure and the diastolic pressure that obtains, MAP (i) is the i time mean arterial pressure of measuring, under the support of pre-set programs, calculate generation by central processing unit according to sensor signal, if do not set this CALCULATION OF PARAMETERS program, then adopt following formula to calculate:

$\mathrm{MAP}\left(i\right)=\frac{1}{3}S\left(i\right)+\frac{2}{3}D\left(i\right).$

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