Pivot wear of a centrifugal blood pump developed for circulatory assist

被引：0
|
作者：
Takashi Yamane
Katsunobu Nonaka
Hisashi Miyoshi
Osamu Maruyama
Masahiro Nishida
Ryo Kosaka
Yoshiyuki Sankai
Tatsuo Tsutsui
机构：
[1] National Institute of Advanced Industrial Science and Technology,School of Engineering
[2] University of Tsukuba,School of Clinical Medicine
[3] University of Tsukuba,undefined
来源：
Journal of Artificial Organs | 2008年 / 11卷
关键词：
Artificial heart; Centrifugal pump; Pivot bearing; Durability; Hemocompatibility;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We are developing a monopivot centrifugal pump for circulatory assist for a period of more than 2 weeks. The impeller is supported by a pivot bearing at one end and by a passive magnetic bearing at the other. The pivot undergoes concentrated exposure to the phenomena of wear, hemolysis, and thrombus formation. The pivot durability, especially regarding the combination of male/female pivot radii, was examined through rotating wear tests and animal tests. As a result, combinations of similar radii for the male/female pivots were found to provide improved pump durability. In the extreme case, the no-gap combination would result in no thrombus formation.
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页码：232 / 237
页数：5
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