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Blood pressure measuring method

A technology of blood pressure and blood pressure value, applied in diagnostic recording/measurement, medical science, sensors, etc., which can solve problems such as inaccurate representation

Active Publication Date: 2015-12-09
INST OF ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

[0006] However, using existing technology, in the case of long-term measurement, there is no linear relationship between pulse wave transit time and blood pressure. Since the current scientific development has not obtained the real relationship between them, a single linear relationship is used to represent Inaccurate

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Embodiment Construction

[0024] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0025] The present invention provides a blood pressure measurement method. In the prior art, as shown in FIG. The electrocardiographic signal (ECG) and the blood oxygen volume pulse wave signal (PPG) are used to obtain the pulse wave transit time; as shown in Figure 2(b), or two photoelectric sensors are used to collect the blood oxygen volume pulse at different positions of the body wave signal, and according to the obtained two blood oxygen volume pulse wave signals, the pulse wave transit time is obtained. According to the formula (1), the blood pressure value is obtained;

[0026] BP=a'x+b'(1)

[0027] Among them, BP is the blood pressure value, a', b' are the coefficients, and x is the pulse wave transit time.

[0028] However, in actual situations, there is no linear relationship between the pulse wave transit time obtained by long-term measuremen...

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Abstract

The invention discloses a blood pressure measuring method. According to the method, the principle that correlation between amplitude of blood oxygen volume pulse wave signals and continuous blood pressure is high is utilized, an expression between pulse wave transmission time and the blood pressure in the prior art and an expression between the amplitude of the blood oxygen volume pulse wave signals and the blood pressure are fit, the incidence relation among a continuous blood pressure waveform, pulse wave transmission time x and the amplitude y of characteristic value points is determined, and then an accurate blood pressure value is obtained.

Description

technical field [0001] The invention relates to the field of blood pressure measurement, in particular to a blood pressure measurement method. 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 transit time and the blood pressure par...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0402A61B5/02A61B5/0215A61B5/1455
Inventor 徐志红方震赵湛陈贤祥杜利东
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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