CN101103909A - Blood pressure dynamic measuring and tendency analyzing observation method and system - Google Patents
Blood pressure dynamic measuring and tendency analyzing observation method and system Download PDFInfo
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Abstract
The invention relates to a blood pressure dynamic measuring and trend analyzing observation method and system, comprising a plurality of cuffs, sensors of the cuffs and an electronic controller. An air bag is arranged in each cuff; each air bag is connected with an air pump and an air valve of each through air ducts. The electronic controller is provided with a central processing unit, a remote communication module, and a control wiring and a signal wiring of the sensor. The central processing unit receives the control indications sent by the remote communication module and sends measuring and analyzing information to the remote communication module under the control of a preset procedure and the control indications. The remote communication module transfers information in accordance with the remote control indications and the indications from the central processing unit. The method is that the blood pressure signals are measured with two cuffs and the remote communication is done by the remote communication module. With small measuring errors and convenience for use, the invention can make dynamic measuring and remote communication, mainly applied to static measuring, dynamic measuring and trend analyzing of blood pressure.
Description
Technical Field
The invention relates to a method and a system for dynamic blood pressure measurement and trend analysis observation, and belongs to the technical field of medical instruments.
Technical Field
The existing electronic blood pressure measuring device mainly comprises a cuff, a sensor of the cuff and an electronic control device, wherein an air bag is arranged in the cuff and is connected with an air pump and an air valve through an air duct, the electronic control device is provided with a central processing unit and is provided with a control circuit connected with the air pump and a signal circuit connected with the sensor, the air pump is controlled by the electronic control device to inflate the air bag when the electronic blood pressure measuring device is used, certain pressure is formed in the cuff to block blood flow of a blood vessel, then the air valve connected with the air duct is gradually deflated, systolic pressure and diastolic pressure signals are sequentially obtained through the sensor and are sent to the central processing unit to be analyzed and processed, and a detection result can be displayed and/or printed through a display and/or a printer. The device has the defects that the device cannot carry out remote data transmission and is inconvenient to use; secondly, dynamic measurement cannot be carried out, and the limitation is large when the device is applied; thirdly, the blood surge above the cuff (near the heart) can cause interference to the systolic pressure, and the accuracy of the measurement result is affected.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a method for measuring and observing dynamic blood pressure and analyzing trends and a system for measuring and observing dynamic blood pressure and analyzing trends, after the method and the system are adopted, the method and the system can be communicated with a remote terminal, receive the instruction of the remote terminal and send the measured data to the remote terminal, and a doctor can control the measurement and obtain the measured result in time when the doctor is not on site, thereby being greatly convenient for use; dynamic measurement and analysis can be performed, and more effective and comprehensive data can be provided for diagnosis; the systolic pressure measured by this method and this system is not affected by blood surges and has small errors.
The technical scheme for realizing the aim of the invention is as follows:
a blood pressure dynamic measurement and trend analysis observation method is characterized in that blood pressure signals are collected by adopting double cuffs, each cuff is provided with a sensor for collecting the blood pressure signals, the blood pressure signals collected by each sensor are sent to a central processing unit in an electronic control device connected with the sensors after amplification and analog-to-digital conversion, the central processing unit analyzes and compares the measurement data from each cuff, the derivative of pulse envelope of each cuff is calculated respectively, the derivative is taken as an effective numerical value to calculate blood pressure parameters, the central processing unit communicates with a remote terminal through a remote communication module, receives a control instruction sent by the remote communication module, sends measurement and analysis information to the remote communication module under the control of a preset program and an external control instruction, and the remote communication module carries out information transmission according to the remote control instruction and the instruction of the central processing unit.
A blood pressure dynamic measurement and trend analysis observation system mainly comprises a plurality of cuffs, sensors in each cuff and an electronic control device, wherein each cuff is internally provided with an air bag, each air bag is connected with an air pump and a respective air valve through an air conduit, the electronic control device is provided with a central processing unit and is provided with a control circuit connected with the air pump, a plurality of control circuits respectively connected with the air valves and a plurality of signal circuits respectively connected with the sensors, the electronic control device is also provided with a remote communication module, the central processing unit receives a control instruction (including a measurement program) sent by the remote communication module and sends measurement and analysis information to the remote communication module under the control of a preset program and the control instruction, and the remote communication module carries out information transmission according to the remote control instruction and the instruction of the central processing unit.
The central processing unit can control the air pump and each air valve to act and receive signals of the sensor under the control of a preset program and an external control instruction, the control system can perform one-time measurement or dynamic measurement, receive and analyze the measurement signals of the sensor, and obtain measurement and analysis information such as measurement data, a measurement analysis curve and the like.
An amplifying circuit and an analog-to-digital conversion circuit can be respectively arranged between each sensor and the central control unit and are used for amplifying the analog signals sent by the sensors and converting the analog signals into digital signals so that the central processing unit can carry out digital processing.
The number of the cuffs can be two, namely, the cuff 1 and the cuff 2, and the air bags in the cuffs can be connected with the same air pump through air ducts or can be connected with respective air pumps.
The working principle of the invention is as follows: when a Central Processing Unit (CPU) receives a measurement instruction from a remote communication module (a wireless communication module GPRS or other) or an output device (such as a key) of an electronic control device, the Central Processing Unit (CPU) firstly controls an air pump to inflate the two cuffs, and when the air pressure reaches the respective required air pressure, the air pump stops inflating, and the CPU controls the air valves to respectively deflate. The sensors (sensor 1 and sensor 2) of each cuff convert the pressure of the cuff 1 and the pressure of the cuff 2 into voltage signals, respectively, and transmit the voltage signals to the corresponding amplifying circuits 1 and 2, respectively, and the voltage signals are subjected to analog-to-digital (AD) conversion and then analyzed and calculated by a Central Processing Unit (CPU). During measurement, the central processing unit captures pulses, eliminates various interferences such as artificial jitter and the like and judges the air release condition in real time according to the analysis of the sensor signals, the air valve is fully opened when the pressure is smaller than the diastolic pressure, the air is rapidly released, the systolic pressure, the diastolic pressure, the average pressure and the pulses are calculated, then the remote communication module (such as GPRS) is awakened, the calculation result, the original data and the waveforms are sent to the server and are distributed to a fixed-point hospital by the server, and a doctor can analyze the data more accurately and more accurately, such as arteriosclerosis assessment, and can intervene manually by the doctor.
The beneficial effects of the invention are: because the remote communication module interacting with the central processing unit is arranged, a measurement control instruction can be sent to the electronic control device through the remote terminal to carry out one-time or periodic dynamic blood pressure measurement, a measured person can carry out measurement at home or on respective sickbed, a measurement result is sent to the remote terminal through the remote communication module, and a doctor can master the measurement conditions of the measured person in a plurality of different places at the remote terminal; the central processing unit can control the system to carry out periodic dynamic measurement, analyze and process the measured data, generate various analysis curves and analysis data, avoid the accidental one-time measurement data, know the blood pressure change process of the measured person and provide more comprehensive data for diagnosis and treatment; because the two cuffs are arranged, the cuff positioned above can block blood flow during measurement, so that the cuff positioned below is not impacted and influenced by blood surge, and the influence of the blood surge on a measurement result is eliminated.
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FIG. 1 is a schematic diagram of the present invention.
Detailed Description
Referring to fig. 1, the system for measuring blood pressure dynamics and analyzing a trend provided by the present invention mainly comprises a plurality of cuffs, sensors in each cuff, and an electronic control device, wherein each cuff is provided with an air bag, each air bag is connected with an air pump and each air valve through an air conduit, the electronic control device is provided with a central processing unit and a remote communication module, and is provided with a control circuit connected with the air pump, a plurality of control circuits respectively connected with each air valve, and a plurality of signal circuits respectively connected with each sensor, the central processing unit receives a control instruction sent by the remote communication module, and sends measurement and analysis information to the remote communication module under the control of a preset program and an external control instruction, and the remote communication module transmits information according to the remote control instruction and the instruction of the central processing unit.
The remote communication module can adopt a wireless communication module GPRS to carry out remote communication by using a public mobile network. The information can also be transmitted to the mobile phone by adopting an infrared, bluetooth and ZIGBEE communication mode, and is sent out by the GPRS function of the mobile phone, and the modes of a wired internet, a voice telephone and the like can also be used. The connection and signal transmission and control between the remote communication module and the central processing unit may be implemented by existing technologies or other possible technologies.
The central processing unit can control the air pump and each air valve to act and receive and analyze the sensor signals under the control of a preset program and an external control instruction, the control system can perform one-time measurement or dynamic measurement, receive and analyze the measurement signals of the sensor, and obtain measurement and analysis information such as measurement data, measurement and analysis curves and the like. The central processing unit controls the sequential working process of the air pump and the air valve to be set according to the measurement requirement, the prior art can be adopted, wherein the air release process of the air valve is determined by the central processing unit according to the pressure signal acquired by the sensor, and the data acquisition points of the systolic pressure and the diastolic pressure are determined according to the transformation of the pressure signal in the air release process.
An amplifying circuit and an analog-to-digital conversion circuit (AD) can be arranged between each sensor and the central control unit and are used for amplifying the analog signals collected by the sensors and converting the analog signals into digital signals so that the central processing unit can carry out digital processing.
The number of said cuffs may be generally two, respectively cuff 1 and cuff 2. The number of the air pumps can be usually one to simplify the structure, and the air bags in each cuff are connected with the air pumps through air conduits, and the air pumps inflate the air bags at the same time. The central processing unit analyzes and calculates the pressure signals transmitted by the sensors, controls the air pump to stop the transport and the installation when the pressure in the air bag of each cuff reaches the requirement, and opens the air valve to deflate according to a set program. The number of the air pumps can be two, so that air can be supplied to the air bags in the cuffs respectively, when the pressure in the air bag in one cuff meets the requirement, the corresponding air pump can stop inflating, and the control can be more accurate.
The cuff may be one to simplify the structure.
When two cuffs are adopted, the central processing unit analyzes and compares the measured data from each cuff, respectively calculates the derivatives of the pulse envelopes of the cuff 1 and the cuff 2, takes the derivative with the larger derivative as an effective numerical value to calculate the blood pressure parameter, when the pressure is higher than the systolic pressure, the first cuff is influenced by the blood flow surge because the blood vessel is blocked, and the second cuff is not influenced by the blood flow surge, so when the pulse amplitude changes greatly when no blood flow passes and when the blood flow passes, the change point is obvious, thereby the blood pressure parameter can be accurately calculated.
The electronic control device may further include a key input device, a display (preferably, a liquid crystal display), and/or a printer, etc. associated with the central control unit, for on-site instruction input, measurement result display, result printing, etc., respectively. Various configuration modes can be flexibly selected according to needs.
When dynamic measurement or periodic measurement is carried out, the central processing unit periodically controls the system to carry out measurement (including starting and stopping of the air pump, opening and closing of the air valve, acquisition and reading of sensor data, data processing and analysis and the like) according to a preset program or a remote setting program and a control instruction, generates measurement data and analysis results at each set time, stores the measurement and analysis information in a memory of the electronic control device, and controls the remote communication module to carry out remote transmission of the measurement and analysis information according to the preset program and the control instruction.
For the measurement and analysis information of each specified time, the central processing unit can also perform statistical operation and trend analysis according to a preset program and a control instruction, and generate an analysis evaluation value such as a statistical average value of each blood pressure parameter in a certain time period and a chart and a curve such as a developed trend fitting curve. The calculation formula of the statistical average value is as follows:
wherein m is the total number of measurements on the nth day, and Sn (i), dn (i) and Pn (i) are respectively the systolic pressure, the diastolic pressure and the pulse rate obtained by the ith measurement on the nth day,
the statistical averages of the n day systolic pressure, diastolic pressure and pulse rate measurements are respectively, and the data avoid the contingency of one measurement, represent the real overall condition of the blood pressure and have more reference value for diagnosis.
The blood pressure development trend fitting curve can be fitted by taking time as an abscissa and blood pressure parameters as an ordinate and adopting a least square method so as to intuitively give the change condition of the blood pressure. The minimum time span may typically be days, typically months or years, depending on the length of time that needs to be observed. The blood pressure parameter data may be each measurement in the time interval when daily trend analysis is performed, or may be a statistical average value per day or each measurement per day when monthly and annual trend analysis is performed. These analyses can be performed with software support using existing techniques.
The system can also automatically calculate and generate other analysis evaluation values, wherein the other analysis evaluation values mainly comprise a systolic pressure trend coefficient, a diastolic pressure trend coefficient and a pressure difference coefficient.
In order to compare the blood pressure changes or the medication effect at different times, the central processing unit controls the system to perform the operation of the trend coefficient according to a preset program and a control instruction (including a parameter setting instruction), and the operation formula is as follows:
in the formula: rho s 、ρ d Respectively the trend coefficients of systolic pressure and systolic pressure, S 1 (i)、S 2 (i) The ith measurements of the systolic pressure, D, are the first and second sets of values for analysis of the trend 1 (i)、D 2 (i) The ith measurements of the first and second sets of systolic pressures used for trend analysis, respectively. The trend coefficient means the ratio of the total variation of the blood pressure to the blood pressure value, zero is no change in the total, the blood pressure is generally increased, and the blood pressure is generally decreased, two sets of suitable measurement data are selected in two time periods or time points (for example, before and after medication) according to the needs by an external instruction (parameter setting) mode to perform trend analysis, so as to display the variation trends of the blood pressure represented by the two sets of data in the two time points (or time periods), and quantitatively describe the variation trends, so as to help to make more accurate judgment on the development of the illness or the medication effect. If necessary, a comparison chart or curve can be made for a plurality of trend coefficients according to a preset program and a control instruction, so that visual observation is facilitated. The creation and display of these graphs or curves can be done using known techniques.
Because the differential pressure of the human blood pressure is in a certain range, if the differential pressure is abnormal, the central processing unit controls the system to carry out the operation of the differential pressure coefficient according to a preset program and a control instruction (including a parameter setting instruction) in order to quantitatively express and analyze the change of the differential pressure, and the operation formula is as follows:
where σ is the differential pressure coefficient, S (i) and D (i) are respectively the systolic pressure and diastolic pressure obtained from the ith measurement, and MAP (i) is the mean arterial pressure of the ith measurement, and is calculated by the cpu with the help of a preset program according to the sensor signal, and if the calculation program for the parameters is not set, the following formula can be used:
Claims (10)
1. a method for dynamically measuring blood pressure and analyzing and observing trend is characterized in that blood pressure signals are collected by double cuffs, each cuff is provided with a sensor for collecting the blood pressure signals, the blood pressure signals collected by each sensor are sent to a central processing unit in an electronic control device connected with the sensors after amplification and analog-to-digital conversion, the central processing unit analyzes and compares measurement data from each cuff, the central processing unit calculates derivatives of pulse envelope of each cuff respectively, the great derivative is taken as an effective numerical value to calculate blood pressure parameters, the central processing unit communicates with a remote terminal through a remote communication module, receives a control instruction sent by the remote communication module, sends measurement and analysis information to the remote communication module under the control of a preset program and an external control instruction, and the remote communication module carries out information transmission according to the remote control instruction and the instruction of the central processing unit.
2. A blood pressure dynamic measurement and trend analysis observation system mainly comprises a plurality of cuff, sensors of each cuff and an electronic control device, wherein each cuff is internally provided with an air bag, each air bag is connected with an air pump and a respective air valve through an air conduit, the electronic control device is provided with a central processing unit, and is provided with a control circuit connected with the air pump, a plurality of control circuits respectively connected with the air valves and a plurality of signal circuits respectively connected with the sensors.
3. The system according to claim 2, wherein the central processing unit controls the air pump and the air valves to operate and receives and analyzes the signals from the sensors under the control of a predetermined program and external control commands, so that the control system performs one-time measurement or dynamic measurement, receives and analyzes the signals from the sensors, and obtains measurement and analysis information such as measurement data and measurement and analysis curves.
4. The system according to claim 2, wherein an amplifier circuit and an analog-to-digital converter circuit are provided between each sensor and the central control unit for amplifying the analog signals collected by the sensors and converting the analog signals into digital signals for the central processing unit to perform digital processing, and the electronic control device further comprises a key input device, a display and/or a printer, which are associated with the central control unit, for on-site instruction input, measurement result display and result printing, respectively.
5. The system according to claim 2, wherein the number of said cuffs is two or one, and the number of said air pumps is one or two.
6. A blood pressure monitor and trend analysis system according to claim 2, 3, 4 or 5, wherein the cuff is a cuff and the cuff is a cuff, the CPU analyzes and compares the measured data from each cuff, calculates the derivatives of the pulse envelopes of the cuff 1 and the cuff 2, respectively, and calculates the blood pressure parameter by taking the larger derivative as the valid value.
7. A system for measuring and observing the dynamics of blood pressure and analyzing trends as claimed in claim 2, 3, 4 or 5, wherein when dynamic measurement or periodic measurement is performed, the CPU periodically controls the system to perform measurement according to the preset program or the remote set program and the control command, generates the measurement data and analysis results for each set time, stores the measurement and analysis information in the memory of the electronic control device, and controls the remote communication module to perform remote transmission of the measurement and analysis information according to the preset program and the control command.
8. The system according to claim 7, wherein the central processing unit performs statistical calculation and trend analysis for the measured and analyzed information at each predetermined time according to a preset program and control commands, and generates an estimated analysis value such as a statistical average value of each blood pressure parameter at a certain time period and a development trend fitting curve.
9. The system according to claim 8, wherein the statistical average is calculated by the formula:
wherein m is the total number of measurements on the nth day, and Sn (i), dn (i) and Pn (i) are respectively the systolic pressure, the diastolic pressure and the pulse rate obtained by the ith measurement on the nth day,
the statistical average values of the n-th day systolic pressure, diastolic pressure and pulse rate measurement results are respectively, the blood pressure development trend fitting curve takes time as an abscissa and blood pressure parameters as an ordinate, and the minimum two multiplication is adopted for curve fitting.
10. The system according to claim 7, wherein the analysis and evaluation values further comprise a systolic blood pressure trend coefficient, a diastolic blood pressure trend coefficient and a differential pressure coefficient, the central processing unit controls the system to perform the operations of the systolic blood pressure trend coefficient, the diastolic blood pressure trend coefficient and the differential pressure coefficient according to preset programs and control commands, wherein the operations of the systolic blood pressure trend coefficient and the diastolic blood pressure trend coefficient are respectively represented by the following formulas:
in the formula: rho S 、ρ d Respectively the trend coefficients of systolic pressure and systolic pressure, S 1 (i)、S 2 (i) The ith measurements of the systolic pressure, D, are the first and second sets of values for analysis of the trend 1 (i)、D 2 (i) The ith measurements of the first and second sets of systolic pressures, respectively, used to analyze the trend;
the operating formula of the pressure difference coefficient is as follows:
wherein σ is a pressure difference coefficient, S (i) and D (i) are respectively systolic pressure and diastolic pressure obtained by the ith measurement, and MAP (i) is mean arterial pressure of the ith measurement, and is calculated by the central processing unit with the support of a preset program according to the sensor signal, and if the calculation program of the parameter is not set, the following formula is adopted for calculation:
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101264012B (en) * | 2008-02-01 | 2010-04-14 | 上海交通大学医学院附属新华医院 | A blood pressure measurement data processing device |
| CN102715896A (en) * | 2012-06-28 | 2012-10-10 | 鹿得医疗器械（南通）有限公司 | Electronic sphygmomanometer with blood pressure data analysis and management functions |
| CN103654755A (en) * | 2013-11-29 | 2014-03-26 | 杨荣 | Blood pressure measuring instrument with blood pressure change recording function |
| CN103908231A (en) * | 2014-04-25 | 2014-07-09 | 湖南三谊医疗科技有限公司 | Wireless ambulatory blood pressure and pulse monitoring system |
| CN103961075A (en) * | 2014-05-05 | 2014-08-06 | 东莞市巨细信息科技有限公司 | Sphygmomanometer and its blood pressure collection and monitoring system |
| CN107049292A (en) * | 2017-04-21 | 2017-08-18 | 孟庆峰 | A kind of dynamic heart blood supply monitoring device |
| CN109859843A (en) * | 2018-10-23 | 2019-06-07 | 苏州鱼跃医疗科技有限公司 | Intelligent health all-in-one machine |
| CN110338761A (en) * | 2019-07-08 | 2019-10-18 | 秒针信息技术有限公司 | Vital sign information acquisition methods and device |
| CN110916634A (en) * | 2019-10-29 | 2020-03-27 | 江苏诺尔贝斯医疗科技有限公司 | Intelligent blood pressure measuring device |
| CN112040838A (en) * | 2018-03-16 | 2020-12-04 | 三星电子株式会社 | Method and device for determining the cause of a trend in vital sign data |
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- 2007-08-01 CN CNB2007101198518A patent/CN100566653C/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101264012B (en) * | 2008-02-01 | 2010-04-14 | 上海交通大学医学院附属新华医院 | A blood pressure measurement data processing device |
| CN102715896A (en) * | 2012-06-28 | 2012-10-10 | 鹿得医疗器械（南通）有限公司 | Electronic sphygmomanometer with blood pressure data analysis and management functions |
| CN102715896B (en) * | 2012-06-28 | 2014-02-19 | 鹿得医疗器械（南通）有限公司 | Electronic sphygmomanometer with blood pressure data analysis and management functions |
| CN103654755A (en) * | 2013-11-29 | 2014-03-26 | 杨荣 | Blood pressure measuring instrument with blood pressure change recording function |
| CN103908231A (en) * | 2014-04-25 | 2014-07-09 | 湖南三谊医疗科技有限公司 | Wireless ambulatory blood pressure and pulse monitoring system |
| CN103961075A (en) * | 2014-05-05 | 2014-08-06 | 东莞市巨细信息科技有限公司 | Sphygmomanometer and its blood pressure collection and monitoring system |
| CN107049292A (en) * | 2017-04-21 | 2017-08-18 | 孟庆峰 | A kind of dynamic heart blood supply monitoring device |
| CN112040838A (en) * | 2018-03-16 | 2020-12-04 | 三星电子株式会社 | Method and device for determining the cause of a trend in vital sign data |
| CN109859843A (en) * | 2018-10-23 | 2019-06-07 | 苏州鱼跃医疗科技有限公司 | Intelligent health all-in-one machine |
| CN109859843B (en) * | 2018-10-23 | 2023-10-03 | 江苏鱼跃医疗设备股份有限公司 | Intelligent health integrated machine |
| CN110338761A (en) * | 2019-07-08 | 2019-10-18 | 秒针信息技术有限公司 | Vital sign information acquisition methods and device |
| CN110916634A (en) * | 2019-10-29 | 2020-03-27 | 江苏诺尔贝斯医疗科技有限公司 | Intelligent blood pressure measuring device |
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| CN100566653C (en) | 2009-12-09 |
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