Non-invasive detecting method for blood viscosity based on pulse wave

Abstract

The invention discloses a non-invasive detecting method for blood viscosity based on pulse wave, and belongs to the fields of biomechanics and hemorheology. The method is characterized by comprising the following steps of: detecting the pressure pulse wave of a radial artery by using a pressure sensor to realize non-invasive detection of the blood viscosity, establishing a relation among the pulse wave of the radial artery, pressure gradient and blood flow, and solving an ordinary differential equation to obtain a numerical solution of the blood flow at different moments in a cardiac cycle; and establishing a relation between the blood flow and the blood viscosity, and thus obtaining the blood viscosity. Meanwhile, by the method, personalized calculation can be realized, and the pain of patients can be furthest relieved; and the detecting method is simple and convenient, is beneficial to promoting universal and popular development of blood viscosity detection, and finally realizes early prediction and clinical diagnosis functions of certain hemodynamic diseases.

Description

technical field [0001] The invention belongs to biomechanics technology, relates to computer program, circuit design, etc., and can be used for non-invasive detection of blood viscosity. Background technique [0002] When blood flows in blood vessels, the internal friction force generated between the molecules inside is called blood viscosity. Blood viscosity is one of the important indicators reflecting the hydrodynamic properties and coagulation characteristics of blood. Measuring blood viscosity has extremely important physiological and pathological significance for studying the formation, development and prevention of certain cardiovascular and cerebrovascular diseases. At present, in vitro detection methods are generally used clinically, and the viscosity of Newtonian fluids and non-Newtonian fluids are measured by capillary viscometers, rotational viscometers and other equipment. This type of method has its limitations: Improper blood collection will cause obvious er...

AI Technical Summary

Problems solved by technology

This type of method has its limitations: Improper blood collection will cause obvious errors in blood viscosity measurement; adding anticoagulants will cause dilution and changes in blood components, and due to different measurement methods, different blood flow states, resulting in principled errors Wait

Different blood pressure waveforms and values ​​will represent different physiological and pathological states of the human body. This method only considers the difference in blood pressure waveforms and does not consider the different situations of blood pressure values.

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