Impeller Design for a Miniaturized Centrifugal Blood Pump

: The impeller design for a miniature centrifugal blood pump is an important consideration since the small diameter impeller requires higher rotational speed, which may cause more blood trauma compared to the larger diameter impeller. Three different impeller vanes (straight vanes with a height of 4...

Full description

Saved in:
Bibliographic Details
Published in:Artificial organs 2000-10, Vol.24 (10), p.821-825
Main Authors: Takano, Tamaki, Schulte-Eistrup, Sebastian, Yoshikawa, Masaharu, Nakata, Kin-ichi, Kawahito, Shinji, Maeda, Tomohiro, Nonaka, Kenji, Linneweber, Joerg, Glueck, Julie, Fujisawa, Akira, Makinouchi, Kenzo, Yokokawa, Michihiro, Nosé, Yukihiko
Format: Article
Language:English
Subjects:
Centrifugal blood pump
Equipment Design
Heart-Assist Devices
Hemolysis
Humans
Hydraulic performance
Impeller design
Miniaturization
Ventricular assist device
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:: The impeller design for a miniature centrifugal blood pump is an important consideration since the small diameter impeller requires higher rotational speed, which may cause more blood trauma compared to the larger diameter impeller. Three different impeller vanes (straight vanes with a height of 4 mm and 8 mm, and 8 mm curved vanes) of which the diameter was 35 mm were subjected to hydraulic performance and hemolysis tests in the same pump housing. Both straight vane impellers attained left ventricular assist condition (5 L/min against 100 mm Hg) at 2,900 rpm while the curved vane required 3,280 rpm. There was no significant hemolysis difference between the tall and short vanes. The curved impeller vanes did not exhibit sufficient hydraulic performance when compared to the straight vanes. The straight vane impellers, even with different heights, were incorporated into the same pump housings, and the vane heights did not drastically change the hydraulic performance or hemolysis.
ISSN:0160-564X
1525-1594
DOI:10.1046/j.1525-1594.2000.06630.x