閉鎖式輸液ラインを用いた直接動脈圧測定とそのダイナミックレスポンスの評価

概要

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rights: 日本医療機器学会rights: 本文データは学協会の許諾に基づきCiNiiから複製したものであるrelation: IsVersionOf: http://ci.nii.ac.jp/naid/110004749524/We evaluated the dynamic response of the closed type three way stopcock (SAS, Tyco Healthcare, USA). One of its ports is closed with rubber septum and used as an airtight sealed infusion port in order to prevent infection. The pressure wave passes through a duct in the shape of semicircle, and across a small chamber behind the rubber septum. It is feared that this passage may have damaging effects on pressure wave propagation. We measured the frequency characteristics of the stopcock, resulting in the highest frequency (fh) to be 1-1.5 Hz higher than that of conventional three way stopcocks. This means that the unique structure adopted in this stopcock did not affect on the frequency characteristics. But, there remained a slight concern about temperature dependency due to air bubbles caught in the small chamber behind the septum.
日本医療機器学会の論文
2006-06-01