Continuous blood pressure measurer

Abstract

The invention provides a continuous blood pressure measurer. When the continuous blood pressure measurer is used for measuring blood pressure, features used for blood pressure equation estimate are selected from a large quantity of extracted feathers and are transmitted to a decision system, and an equation for estimating blood pressure is determined from a blood pressure equation set; then features for estimating coefficients of the blood pressure equation are selected from extracted features in feature extraction by the aid of feature selection, and the coefficients of the blood pressure equation are estimated via methods such as statistical estimation, numeric calculation and the like; and finally, features for estimating blood pressure are selected from the extracted features in feature extraction by the aid of feature selection, and are substituted into the blood pressure equation for realizing blood pressure estimate. A pulse wave velocity method based on multiple parameters and a method for creating the blood pressure equation set are utilized, blood pressure estimate is realized by the aid of a manual intelligent method, a mode recognition method and the like, measurement precision of blood pressure estimate is further improved, and a troublesome parameter calibration process is avoided.

Description

technical field [0001] The present invention relates to a continuous blood pressure measurement device, and more particularly relates to a method for estimating the parameters in the blood pressure measurement equation based on the pulse wave velocity method and the systolic blood pressure, diastolic blood pressure and mean pressure by using various parameters of the electrocardiographic signal and the photoplethysmogram signal A device for continuous blood pressure estimation. Background technique [0002] Blood pressure refers to the lateral pressure of the blood in the blood vessel on the wall of the blood vessel 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, emotion, stress, exercise and circadian rhythm, blood pressure has ob...

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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