Continuous blood pressure measuring device

Abstract

The invention provides a continuous blood pressure measuring device. The method for measuring blood pressure by the device comprises the following steps of: selecting features used for blood pressure equation estimation from a large number of extracted features by feature selection, sending the selected features into a decision system, and determining equations used for estimating the blood pressure from blood pressure simultaneous equations; selecting the features used for estimating coefficients of the blood pressure equations from the features which are extracted from feature extraction by feature selection, and estimating the coefficients of the blood pressure equations by statistical estimation, digital computation and other methods; and finally selecting the features used for estimating the blood pressure from the features which are extracted from the feature extraction by feature selection, and substituting the selected features into the blood pressure equations to estimate blood pressure. By a multi-feature-based pulse wave velocity method and a blood pressure simultaneous equation establishment method, the blood pressure estimation is performed by artificial intelligence, pattern recognition and other ways to ensure that not only the measurement accuracy of the blood pressure estimation is improved but also a complicated parameter calibrating process is avoided.

Description

Technical field [0001] The present invention relates to a continuous blood pressure measuring device, and more particularly to a method for estimating parameters, systolic, diastolic, and average pressure in a blood pressure measurement equation based on pulse wave velocity method by using multiple parameters of electrocardiographic signals and photoelectric volume wave signals A device for continuous blood pressure estimation. Background technique [0002] Blood pressure refers to the lateral pressure of blood in the blood vessel against the blood vessel wall per unit area, that is, the pressure. It is an important physiological parameter reflecting cardiovascular function, and an important basis for diagnosing diseases, observing treatment effects, and making predictions and judgments. Due to the influence of various factors such as physical state, mood, pressure, exercise and circadian rhythm, blood pressure has obvious fluctuations. Therefore, a single measurement of blood p...

AI Technical Summary

Problems solved by technology

This method is a promising method for continuous blood pressure measurement, but there are two problems with this method: (1) The current continuous blood pressure measurement method based on the pulse wave velocity method requires a cuff and an instrument to correct the blood pressure measurement equation

(2) Human blood pressure is affected by many factors. Continuous blood pressure measurement based on pulse wave velocity method is affected by many factors, including waking or sleeping, activity level, body position, emotion, ambient temperature, sleep apnea, caffeine, alcohol , cardiac output, vasoconstriction, terminal impedance, cardiac load, measurement posture, measurement location, temperature, sensor selection, etc., only using PTT, the blood pressure value measured by the equation is not accurate enough

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