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A non-invasive continuous blood pressure physiological monitoring system

A technology for physiological monitoring and blood pressure, applied in the fields of vascular evaluation, diagnostic recording/measurement, medical science, etc., can solve the problems of errors in blood pressure parameters and inaccurate measurement results, and achieve the effect of avoiding influence

Active Publication Date: 2017-11-03
INST OF ELECTRONICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there will be errors between the obtained blood pressure parameters and the actual blood pressure parameters, resulting in inaccurate measurement results

Method used

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  • A non-invasive continuous blood pressure physiological monitoring system
  • A non-invasive continuous blood pressure physiological monitoring system
  • A non-invasive continuous blood pressure physiological monitoring system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The present invention proposes a non-invasive continuous blood pressure physiological monitoring system, as shown in Fig. Blood period time PEP unit, physiological parameter processing unit and display unit.

[0058] Wherein, the pulse wave transit time PTT unit is used to receive the electrocardiographic signal ECG collected by the electrocardiogram acquisition unit and the photoplethysmography signal PPG obtained by the pulse wave acquisition unit; and then obtain the pulse wave transit time PTT, that is, as As shown in Figure 2(a), the pulse wave transit time PTT unit receives the ECG signal ECG obtained by the ECG acquisition unit, and after analysis, obtains the time T corresponding to the characteristic value point R R ; At the same time, receive the photoplethysmogram signal PPG obtained by the pulse wave acquisition unit, after analyzing, obtain the time T corresponding to the characteristic value P point P , using formula (2)

[0059] PTT=T R -T P (2)

[...

Embodiment 2

[0077]Preferably, the present invention also provides a non-invasive continuous blood pressure physiological monitoring system, as shown in Figure 1(b), its system composition is the same as that of the above-mentioned embodiment 1, but the ECG acquisition unit is due to the acquisition method of the pulse wave transit time PTT The change of the ejection period time PEP unit only provides ECG signals; and the pulse wave transit time PTT is obtained by using the blood flow velocity between two photoplethysmography signals. Therefore, the pulse wave The acquisition unit contains two reflective photoelectric sensors, which are used to acquire photoplethysmography signals respectively. Specifically:

[0078] As shown in Figure 2(b), two reflective photoelectric sensors are used in the pulse wave acquisition unit, and each reflective photoelectric sensor is used to obtain a photoplethysmography signal PPG; the pulse wave transit time PTT unit receives the pulse wave The two photop...

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Abstract

The invention discloses a non-invasive continuous blood pressure physiological monitoring system. According to the non-invasive continuous blood pressure physiological monitoring system, the situation that traditional obtained pulse wave transmission time PTT includes aorta pulse wave transmission time expected to be obtained and three kinds of interference time including artery interference time, ejection period time and blood capillary end transmission time is considered, and therefore ejection period time PEP of the heart is obtained through an impedance cardiogram signal ICG and an electrocardiograph signal ECG. The obtained ejection period time PEP is deleted from the obtained pulse wave transmission time PTT so that a more accurate aorta pulse wave transmission time delta T can be obtained.

Description

technical field [0001] The invention relates to the field of blood pressure monitoring, in particular to a noninvasive continuous blood pressure physiological monitoring system. Background technique [0002] At present, the population is aging and problems and sub-health problems are becoming more and more prominent. Chronic diseases such as cardiovascular and cerebrovascular diseases and hypertension have become the number one killer of human health. Convenient and easy-to-use health monitoring equipment has become an urgent need of the society. [0003] There are two commonly used blood pressure measurement methods: [0004] 1. By analyzing the electrocardiographic signal ECG and the photoplethysmography signal PPG, obtain the eigenvalue points of the electrocardiogram signal ECG and the photoplethysmography signal PPG respectively, and then obtain the pulse wave transit time PTT between the two eigenvalue points , using the linear relationship between the pulse wave tran...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/021
CPCA61B5/0059A61B5/021A61B5/02141A61B5/6804A61B5/7271A61B5/318
Inventor 徐志红方震赵湛杜利东陈贤祥
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI