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Type: Artigo de periódico
Title: Implantable Centrifugal Blood Pump With Dual Impeller and Double Pivot Bearing System: Electromechanical Actuator, Prototyping, and Anatomical Studies
Author: Bock, E
Antunes, P
Leao, T
Uebelhart, B
Fonseca, J
Leme, J
Utiyama, B
da Silva, C
Cavalheiro, A
Santos, D
Dinkhuysen, J
Biscegli, J
Andrade, A
Arruda, C
Abstract: An implantable centrifugal blood pump has been developed with original features for a left ventricular assist device. This pump is part of a multicenter and international study with the objective to offer simple, affordable, and reliable devices to developing countries. Previous computational fluid dynamics investigations and wear evaluation in bearing system were performed followed by prototyping and in vitro tests. In addition, previous blood tests for assessment of normalized index of hemolysis show results of 0.0054 +/- 2.46 x 10-3 mg/100 L. An electromechanical actuator was tested in order to define the best motor topology and controller configuration. Three different topologies of brushless direct current motor (BLDCM) were analyzed. An electronic driver was tested in different situations, and the BLDCM had its mechanical properties tested in a dynamometer. Prior to evaluation of performance during in vivo animal studies, anatomical studies were necessary to achieve the best configuration and cannulation for left ventricular assistance. The results were considered satisfactory, and the next step is to test the performance of the device in vivo.
Subject: Left ventricular assist device
Dual impeller centrifugal blood pump
Implantable centrifugal blood pump
Brushless direct current motor
Country: EUA
Editor: Wiley-blackwell
Citation: Artificial Organs. Wiley-blackwell, v. 35, n. 5, n. 437, n. 442, 2011.
Rights: fechado
Identifier DOI: 10.1111/j.1525-1594.2011.01260.x
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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