Device and method for measuring pulse waves and blood pressures

Abstract

The invention provides a device for measuring pulse waves and blood pressures. The device comprises a wrist strap, a pulse wave sensor, a balloon, a gas source, a pressure sensor, a collection unit and a calculation unit, wherein the wrist strap is used for wrapping the wrist of the human body, and the balloon is arranged in the wrist strap and capable of being pressurized and depressurized. The pulse wave sensor is arranged on the wrist strap, and acquires first pulse waves through directly collecting pulse vibration pressure from the radial artery in real time. The gas source supplies gas with the pressure controllable to the balloon. The pressure sensor is arranged on a conveying pipeline of the gas source and the balloon and used for detecting gas pressures in the wrist strap. The collection unit collects the first pulse waves and the gas pressures. The calculation unit is connected with the collection unit and calculates the mean blood pressure, the systolic pressure and the diastolic pressure according to the gas pressures with the pulse waves as correction parameters.

Description

technical field [0001] The invention relates to a sphygmomanometer, in particular to a device and method for measuring pulse waves and blood pressure. Background technique [0002] Sphygmomanometers used to measure blood pressure have developed from mercury sphygmomanometers to electronic sphygmomanometers. The current third-generation electronic sphygmomanometer is mainly a wrist electronic sphygmomanometer, which is based on the principle of hemodynamics, using an inflatable wristband to block the blood flow of the radial artery, and measuring the pressure wave that is superimposed on the pressure of the wristband and synchronized with the heartbeat. (i.e. the pulse wave), and then estimate the blood pressure based on the relationship between the pulse wave amplitude and the cuff pressure. [0003] The main difficulty of this technique lies in the detection of the pulse wave. Factors such as the elastic characteristics of the arterial wall, blood viscosity, and cuff comp...

AI Technical Summary

Problems solved by technology

[0003] The main difficulty of this technique lies in the detection of the pulse wave

Factors such as the elastic properties of the arterial wall, blood viscosity, and cuff compliance will affect the pulsation amplitude of the pulse wave, thereby reducing the effectiveness of obtaining the peak pulsation pressure and affecting the accurate measurement of blood pressure.

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