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The Hemolytic Characteristics of Monopivot Magnetic Suspension Blood Pumps With Washout Holes
Author(s) -
Maruyama Osamu,
Nishida Masahiro,
Tsutsui Tatsuo,
Jikuya Tomoaki,
Yamane Takashi
Publication year - 2005
Publication title -
artificial organs
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.684
H-Index - 76
eISSN - 1525-1594
pISSN - 0160-564X
DOI - 10.1111/j.1525-1594.2005.29059.x
Subject(s) - washout , impeller , suspension (topology) , hemolysis , materials science , mechanics , shear stress , physics , composite material , medicine , mathematics , homotopy , pure mathematics
The hemolytic characteristics of monopivot magnetic suspension blood pumps as a function of impeller washout hole configuration and female pivot shape are observed. The pump impellers are designed with three washout hole configurations for blood circulation, and four female pivot shapes to reduce blood stagnation and to enhance antithrombogenicity. The hemolytic characteristics of the monopivot pumps were observed to be better than those of a currently available commercial centrifugal blood pump, BP‐80, and changed to be nearly equal when the female pivot shape was changed. This indicates that hemolysis in monopivot pumps is mainly caused by shear stress between the male and female pivots.