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New Centrifugal Blood Pump With Dual Impeller and Double Pivot Bearing System: Wear Evaluation in Bearing System, Performance Tests, and Preliminary Hemolysis Tests
Author(s) -
Bock Eduardo,
Ribeiro Adriana,
Silva Maxwell,
Antunes Pedro,
Fonseca Jeison,
Legendre Daniel,
Leme Juliana,
Arruda Celso,
Biscegli José,
Nicolosi Denys,
Andrade Aron
Publication year - 2008
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.1525-1594.2008.00550.x
Subject(s) - impeller , centrifugal pump , bearing (navigation) , engineering , inlet , hemolysis , ventricular assist device , mechanical engineering , biomedical engineering , materials science , computer science , medicine , cardiology , heart failure , artificial intelligence
A new dual impeller centrifugal blood pump has been developed as a research collaboration between Baylor College of Medicine and Institute Dante Pazzanese of Cardiology for long‐term left ventricle assist device (LVAD). A design feature of this new pump is a dual impeller that aims to minimize a stagnant flow pattern around the inlet port. Several different materials were tested in order to adopt a double pivot bearing design originally developed by Prof. Dr. Yukihiko Nosé from Baylor College of Medicine. Hydraulic performance tests were conducted with two different inlet ports' angle configurations 30° and 45°. Pump with inlet port angle of 45° achieved best values of pressure ahead and flow after 1800 rpm. Preliminary hemolysis tests were conducted using human blood. The pump showed good performance results and no alarming trace of hemolysis, proving to be a feasible long‐term LVAD.