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Japanese

Characteristics of Cerebral Aneurysm Clips Based on Measurements of the Opening Pressures: Basic Research Using a High-Pressure Perfusion Circuit and a Porcine Vessel Yoshitaka MIZUNIWA 1 , Yuichiro TANAKA 1 , Hidemichi ITO 1 , Kotaro OSHIO 1 1Department of Neurosurgery, St. Marianna University School of Medicine Keyword: aneurysm clip , microsurgery , openning pressure , vascular surgery pp.523-529
Published Date 2014/6/10
DOI https://doi.org/10.11477/mf.1436102260
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 Background:The closing force of cerebral aneurysm clips is measured according to International Organization for Standardization guidelines. However, it is difficult to predict the risk of a clip using only the closing force. To investigate the clips' detailed characteristics and assess their limits, we used a high-pressure perfusion circuit and measured the critical pressure to the slipping point.

 Methods:Opening pressures were measured for 3 types of Sugita clips using a high-pressure perfusion circuit and a porcine vessel. The opening pressures at different points on various blade lengths and shapes were also measured.

 Results:The opening pressure of a short blade clip was higher than that of a long one. In a straight blade of the same length, the opening pressure of the proximal segment of a blade was higher than that at the distal segment.

 Conclusions:Our study showed the characteristics of various clips, such as blade length. These findings suggested that clips should be chosen on a case-by-case basis.


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電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院

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