Pivot wear of a centrifugal blood pump developed for circulatory assist

被引：5

作者：

Yamane, Takashi ^{[1
]}

Nonaka, Katsunobu ^{[1
]}

Miyoshi, Hisashi ^{[1
]}

Maruyama, Osamu ^{[1
]}

Nishida, Masahiro ^{[1
]}

Kosaka, Ryo ^{[1
]}

Sankai, Yoshiyuki ^{[2
]}

Tsutsui, Tatsuo ^{[3
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058564, Japan

[2] Univ Tsukuba, Sch Engn, Tsukuba, Ibaraki, Japan

[3] Univ Tsukuba, Sch Clin Med, Tsukuba, Ibaraki, Japan

来源：

JOURNAL OF ARTIFICIAL ORGANS | 2008年 / 11卷 / 04期

关键词：

Artificial heart; Centrifugal pump; Pivot bearing; Durability; Hemocompatibility;

D O I：

10.1007/s10047-008-0431-6

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

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.

引用

页码：232 / 237

页数：6

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