バスキュラーアクセス模擬循環回路における自励振動現象の解析

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2017/04/01

タイトル(英語): Analysis of Self-excited Oscillation in a Simulated Vascular Access Circuit

著者名: 稻岡　秀檢（北里大学医療衛生学部），関口　綾乃（東鷲宮病院），小林　こず恵（北里大学医療衛生学部），根武谷　吾（北里大学医療衛生学部），熊谷　寛（北里大学医療衛生学部）

著者名(英語): Hidenori Inaoka (Allied Health Sciences, Kitasato University), Ayano Sekiguchi (HigashiWashinomiya Hospital), Kozue Kobayashi (Allied Health Sciences, Kitasato University), Satoru Nebuya (Allied Health Sciences, Kitasato University), Hiroshi Kumagai (Allied Health Sciences, Kitasato University)

キーワード: バスキュラーアクセス，狭窄，自励振動　　Vascular access，stenosis，self-exited oscillation

要約(英語): In hemodialysis, blood is removed from the body through a vascular access (VA) and the filtered blood is returned to the body through the VA. The VA is made by joining an artery and a vein. This connection increases the amount of blood flow into the vein. A dialysis needle, which punctures into the VA, causes endothelial injury. This injury triggers leukocyte adhesion and the proliferation. This phenomenon promotes a thickening of the VA that leads to stenosis. In the clinical field, there are reports that the rapid blood removal vibrates the VA which has the stenosis. There is the possibility that self-excited oscillation has occurred. If the stenosis induces the oscillation, it is possible to estimate the stenosis by detecting the oscillation. In this study, we performed the experiment using a simulated VA circuit made of thin silicon tube (collapsible tube). The stenosis was set the lower end of the collapsible tube in the circuit, and the external pressure of the collapsible tube was controlled to vary the transmural pressure. Experimental results demonstrated that when the stenosis ratio was high, the oscillation of the tube occurred. Also, higher stenosis ratio decreased the frequency of the oscillation and increased the peak power of that. These results suggested that the stenosis could be estimated by analyzing the power spectrum of the oscillation frequency.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.137 No.4 （2017） 特集：量子・情報・エレクトロニクス医療応用

本誌掲載ページ: 565-572 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/137/4/137_565/_article/-char/ja/