System for measuring hardening index of artery network

一种硬化指数、动脉的技术，应用在诊断记录/测量、医药科学、传感器等方向，能够解决易出错、导数运算放大高频噪声、高计算需求等问题，达到不容易误差、提高精度的效果

Active Publication Date: 2014-11-19
HONG KONG APPLIED SCI & TECH RES INST
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Such high computational demands limit the practical application of this technique
Derivative operations are known to amplify high-frequency noise
Therefore, derivative-based classification is very sensitive to noise and error-prone

Method used

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  • System for measuring hardening index of artery network
  • System for measuring hardening index of artery network
  • System for measuring hardening index of artery network

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Embodiment Construction

[0076] "Comprising" used in the present specification and claims means including the following elements, but not excluding other elements.

[0077] "Connected" as used in this specification and claims means to be electrically connected directly or indirectly through one or more electrical devices, unless otherwise stated.

[0078] figure 1 A simplified arterial network model of a person showing an embodiment of the invention. The pulse waveform produced by the heart (not shown), also called the aortic pulse, first propagates along the aortic arch 20 . When it reaches the bifurcation between the aortic arch 20 and the brachial artery 22, part of the aortic pulse will travel through the brachial artery 22 to the radial artery 24, where it will eventually be measured by a transducer (not shown) placed near the radial artery 24 arrive. On the other hand, the rest of the aortic pulse continues down the thoracic aorta 26 and the epigastric aorta 28 until it reaches the first refl...

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Abstract

The invention discloses a system for measuring a hardening index of an artery network. The system comprises a pressure sensor used for acquiring a pulse waveform associated with the artery network; and a microprocessor connected to the pressure sensor. The microprocessor obtains the pulse waveform through the pressure sensor, and estimates a source pulse according to at least one preset feature of the pulse waveform; determines a plurality of attributive features of the pulse waveform according to the relation between the pulse waveform and the source waveform; and calculates the hardening index of the artery network according to the plurality of attributive features of the pulse waveform. The system provided by the invention has low computing requirements, is less sensitive to noise, is not prone to generate errors and improves the precision.

Description

【Technical field】 [0001] The present invention relates to a system for measuring the arterial network sclerosis index, especially a system for determining the arterial sclerosis index from the radial pulse waveform. 【Background technique】 [0002] When our heart beats, it produces a pulse wave, also known as the aortic pulse, which travels along the network of arteries in the cardiovascular system. When these pulse waves reach parts of the impedance mismatch, such as blood vessel bifurcations and parts of blood vessel radius changes, wave reflections will occur. Reflections of these waves can be measured at various locations. For example, the wave reflection measured at the human wrist is known as the radial pulse waveform. Previous studies have pointed out that the ratio of the late systolic peak to the early systolic peak of the radial artery pulse waveform was used as the index of atherosclerosis. However, determining the exact location of the early systolic peak and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/02
CPCA61B5/02007A61B5/02116A61B5/0255A61B5/7246A61B5/7282
Inventor 郑智杰
Owner HONG KONG APPLIED SCI & TECH RES INST
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