三軸脈診儀系統之設計與實作

Design and Implementation of Three-axis Sphygmography

張文林(chang wên lin)

指導教授 ： 張剛鳴 ； 劉省宏

亞洲大學/資訊學院/電腦與通訊學系碩士班/碩士(2007年)

摘要

在以往的測量脈波研究中，對於以非侵入式的方法量測橈動脈脈波，並沒有標準化的定量和程序，本研究的目地在提出一三軸脈波測量機構(脈診儀)和程序，透過現代技術、電腦科學與軟硬體，將中醫脈波圖形，以客觀、具體的顯示在電腦螢幕上，精確度高。脈診儀克服傳統因人為不確定性把脈的困難，以自製的壓張計同步感測動脈直徑變化和脈博波，排除傳統中醫把脈時經驗及主觀判斷的困擾，使診斷更準確。讓中醫辨識更客觀、數據化。如此可提升對橈動脈脈波測量的準確性，對脈波波型分析有所幫助。

關鍵字

脈診儀、脈波、橈動脈

並列摘要

Previous noninvasive measurements of the pulse waveform of the radial artery have not employed standardized procedures. Here we propose a new noninvasive measuring apparatus that has a three-axis mechanism and employs a standard positioning procedure for detecting the optimal measurement site and for accurately measuring the pulse waveform. A modified tonometer was designed to simultaneously measure the arterial diameter change (ADC) and pulse waveform.
Considering the artery as a cylinder, the measured waveform would be distorted if the sensor is displaced from the center. Moreover, a blood vessel is elastic, and its compliance changes with the transmural pressure,being maximal when the transmural pressure is equal to zero. The sensor should detect a pulse waveform with the least amount of distortion. Therefore, based on an analysis of the vascular geometry and the artery model, a standard positioning procedure was designed by the ADC for the X and Z axes. The tonometer can record an accurate pulse waveform at the optimal measurement site. In order to verify the resolution of the X-axis scanning procedure, the echo method was used to measure the radial artery outer diameter in ten healthy subjects. Therefore, we consider our noninvasive measurement apparatus very suitable for analyzing the pulse waveform of the radial artery.

並列關鍵字

Sphygmography, Tonometer

參考文獻

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