Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Individualized correction method and device used for continuous measurement and estimation of arterial blood pressure by pulse wave

A technique of arterial blood pressure and correction method, which is applied in the field of obtaining individualized regression coefficients to achieve the effect of simple operation and easy implementation

Inactive Publication Date: 2011-09-14
BEIJING XINXING YANGSHENG TECHN CORP
View PDF3 Cites 35 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] It was also proposed that by changing the body position (such as lying down and raising the legs), the pressure in some of the blood vessels of the subject will change, so that the pulse wave velocity in this blood vessel will change, and finally cause the change of the pulse wave transit time. Under normal conditions Carry out two groups of independent tests under the state of changing the body position, and determine the two parameters a and b through the two groups of measured results. This method can improve the accuracy of the correction, but it cannot continuously obtain the pulse rate corresponding to each beat under the state of changing the body position. Multiple sets of information related to blood pressure

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Individualized correction method and device used for continuous measurement and estimation of arterial blood pressure by pulse wave
  • Individualized correction method and device used for continuous measurement and estimation of arterial blood pressure by pulse wave

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The device that this example adopts is: be provided with central microprocessor, and

[0035] The electrocardiographic electrode sensor is connected to the microprocessor through the amplification and acquisition circuit, and is used to input the electrocardiographic signal of the subject to the microprocessor;

[0036] The pulse wave sensor is connected to the microprocessor through the amplification and acquisition circuit, and is used to input the pulse wave signal of the subject to the microprocessor;

[0037] A cuff equipped with a pressure sensor is connected to the microprocessor through an amplifying circuit connected to the pressure sensor, and is used for inputting a cuff pressure signal to the microprocessor;

[0038] The inflation unit and the deflation unit are respectively used to control the inflation and deflation of the cuff under the control of the microprocessor;

[0039] The output device, including a display screen and a printout device, is used to o...

Embodiment 2

[0051] Different from Embodiment 1, the pulse wave transit time difference threshold value set in this example is 10 ms, and 10 sets of calculation data are acquired at the same time.

[0052] After obtaining the first group of pulse wave transit time values ​​and average blood pressure values-PWTT1, BP1 as in Example 1, continue to continuously monitor the subject's ECG and fingertip pulse wave signals, and the microprocessor according to the continuous synchronization The monitored ECG and pulse wave signals calculate and record the pulse wave transit time of the subject in real time. When the difference is greater than the set threshold value of 10ms, the oscillometric method will be triggered to measure the current corresponding average blood pressure value BPn, and the set of calculation data obtained this time will be recorded until the tenth set of calculation data is obtained. and BP values ​​are as follows:

[0053] PWTT = PWTT1, PWTT2, ..., PWTT10

[0054] BP = BP1...

Embodiment 3

[0060] In this example, two sets of calculation data PWTTn-1, BPn-1, and PWTTn, BPn were respectively obtained at two time points of Tn-1 and Tn, and these two sets of calculation data were respectively substituted into the formula BP=a+b*PWTT, Then, the individualized regression coefficients a and b of the equation BP=a+b*PWTT, which is based on the equation BP=a+b*PWTT for estimating arterial blood pressure by continuous measurement of pulse waves between time points Tn−1 and Tn, are calculated by interpolation.

[0061] The average blood pressure value in the time period from Tn-1 to Tn can be calculated beat by beat through the continuous measurement of the pulse wave and the equation BP=a+b*PWTT obtained by the interpolation method in this example. The method in this example can improve Tn Accuracy of arterial blood pressure estimation in the time period from -1 to Tn. .

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an individualized correction method and a device used for continuous measurement and estimation of arterial blood pressure by pulse wave. The PWTT (Pulse Wave Translation Time) of a measured person is recorded in real time, the mean blood pressure BP1 is acquired and recorded, the PWTT1 at the corresponding time is obtained, and the two data are taken as a first set of data. Then, the PWTT of the measured person is continuously monitored and recorded and at each time of monitoring that the absolute value of a difference between the present PWTT value and the PWTT value in the set of data recorded previously is larger than a domain value, an oscillography blood pressure instrument is triggered to measure the present mean blood pressure value BPn of the measured person. In this way, two or more sets of PWTT values and corresponding mean BP values are sequentially acquired in a monitoring time section, and two or more sets of data are taken as calculating data to calculate the individualized regression coefficients a and b of an equation A. The method and the device are easy in operation and implementation, and can enable the calculated regression coefficients to more agree with the actual conditions of measured individuals.

Description

technical field [0001] The invention belongs to a method for obtaining information related to human physiological parameters, in particular to a method for obtaining individualized regression coefficients for continuous measurement of human arterial blood pressure and a device used. Background technique [0002] Non-invasive blood pressure measurement is to indirectly obtain blood pressure by detecting parameters such as the pulsation of the side arterial wall or blood vessel volume. This measurement can be divided into two types: intermittent and continuous. The intermittent measurement is the blood pressure value at a specific measurement time. Since the pressure of blood on the arterial wall is changing every heartbeat and every time point, the systolic blood pressure and diastolic blood pressure measured by this method are not necessarily the representative blood pressure of the subject, and they are not in the same heartbeat. The continuous type can measure blood pressu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A61B5/022A61B5/02A61B5/0402
Inventor 吴锋向海燕刘延勇俞海周玉彬成奇明俞梦孙蔺雪枫宋博强
Owner BEIJING XINXING YANGSHENG TECHN CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com