Non-invasive continuous blood pressure measurement system and calibration method thereof
A blood pressure and blood pressure signal technology, applied in the measurement of pulse rate/heart rate, diagnostic record/measurement, medical science, etc., can solve the problem that the measurement accuracy is difficult to meet the clinical requirements, overcome the long time consumption of convergence and improve the accuracy Effect
Active Publication Date: 2021-03-26
ZHEJIANG UNIV
View PDF19 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the calibration of the pulse wave transit time method and the self-adaptation of the optimal filter belong to two different fields. So far, no recursive least squares method has been used in the calculation formula calibration of the pulse wave transit time method.
[0007] In summary, the pulse wave transit time method has great advantages over other non-invasive continuous blood pressure measurement methods, but the measurement system based on this method must properly solve the problem of system calibration, otherwise the measurement accuracy is difficult to meet clinical requirements
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0032] Such as figure 1 As shown, the noninvasive continuous blood pressure measurement system of the present invention includes a continuous physiological signal acquisition unit 1 , an intermittent calibration blood pressure signal acquisition unit 2 , and a continuous blood pressure calculation and system calibration unit 3 . The continuous signal acquisition unit 1 includes a continuous electrocardiographic signal acquisition unit 11 and a continuous pulse wave signal acquisition unit 12 . The continuous electrocardiographic signal acquisition unit 11 continuously acquires the electrocardiographic signal, and further finds the time at which the R wave peak point is located and sends it to the continuous blood pressure calculation and system calibration unit 3; the continuous pulse wave signal acquisition unit 12 continuously acqui...
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
Login to View More Abstract
The invention discloses a noninvasive continuous blood pressure measuring system and a calibration method thereof. When the system is started, a common least square method is used for carrying out initialization of a formula coefficient and a constant term, so that the system immediately has the capability of calculating correct non-invasive continuous blood pressure values; then, a recursion least square method is used in subsequent calibration. On the one hand, the technical barrier that if the recursion least square method is directly used, the time consumed for calculating convergence of the formula coefficient and the constant term is long in the starting process of the system is overcome, so that the system immediately has the capability of calculating the correct non-invasive continuous blood pressure values from the moment of starting; on the other hand, the defects that a blood pressure calculation formula obtained by only using the least square method cannot reflect common physiological conditions of a user and can only reflect the physiological conditions in a short time, influences of accidental errors of each time of intermittent blood pressure measurement are large, and the accuracy of continuous non-invasive blood pressure results cannot meet clinical requirements easily are overcome.
Description
technical field [0001] The invention relates to a noninvasive continuous blood pressure measurement system and a system calibration method when the measurement system is used to monitor blood pressure, belonging to the technical field of blood pressure monitoring. Background technique [0002] Blood pressure is one of the important physiological parameters of the human body, plays an important role in the diagnosis and treatment of various cardiovascular diseases such as hypertension, and is also an important item of daily health monitoring. The most commonly used blood pressure values in clinical practice are systolic blood pressure and diastolic blood pressure. The currently commonly used non-invasive blood pressure monitoring is intermittent blood pressure monitoring based on the oscillometric method or the Korotkoff sound method. In addition to being unable to provide continuous blood pressure data, intermittent blood pressure monitoring also has the problem of discom...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/0205A61B5/318A61B5/346A61B5/352A61B5/00
CPCA61B5/0205A61B5/02108A61B5/02125A61B5/0225A61B5/024A61B5/72A61B5/725A61B5/318
Inventor 叶学松黄仲毅冯靖杰周聪聪
Owner ZHEJIANG UNIV