Pulse wave detecting method and device by means of cardiac symbol signal

Abstract

The present invention discloses method and device for detecting pulse wave by means of cardiac symbol signal. Through detecting the temporal interval between the R wave and the pulse wave, obtain reference interval value, locating searched pulse wave amplitude with the reference interval value and obtaining reference pulse wave amplitude under different pressures, the mean pressure, the systolic pressure and the diastolic pressure are calculated by means of the ratio process. Compared with the available method to search pulse wave peak directly in the pulse wave signal, the present invention has raised anti-jamming capacity and raised blood pressure measuring accuracy especially in case of sports and arrhythmia.

Description

【Technical field】 [0001] The invention relates to a pulse wave detection method, in particular to a pulse wave detection method and device which use electrocardiographic signals to guide pulse wave search and enhance anti-interference performance, and an electronic sphygmomanometer including the device. 【Background technique】 [0002] At present, the oscillation method is usually used for non-invasive blood pressure measurement. The measurement process is to inflate the cuff first. When the pressure reaches greater than the systolic blood pressure of the human body, it can be considered that the blood vessel has been completely blocked. At this time, there should be no pressure at the cuff. There is a pulsation of the pulse. Then start to deflate slowly or in steps. When the cuff pressure is lower than the systolic pressure, the blood vessel has been partially connected. At this time, the pulse will gradually increase with the decrease of the cuff pressure. Due to the influe...

AI Technical Summary

Problems solved by technology

In the traditional measurement method, the measurement result is easily affected by various interferences such as arm movement, resulting in no measurement results or even large deviations.

[0003] Because the cuff needs to be tied to the patient's arm and inflated to a certain pressure during the measurement, the patient will inevitably feel oppression, tremors will occur unconsciously, or the patient's condition leads to muscle tremors, etc., or during surgery During the process or other situations, the patient's arm is touched by the outside world and shakes unexpectedly. In these cases, the baseline and amplitude of the pulse wave will be affected. The traditional method of finding the pulse wave amplitude is difficult to guarantee its accuracy. Increased probability of identifying wrong pulse wave amplitude

Images