Implantable centrifugal blood pump with dual impellerand double pivot bearing system: electromechanical actuator, prototyping, and anatomical studies
Artif Organs
; 35(5): 437-442, 2011. ilus, graf
Article
in English
| Sec. Est. Saúde SP, SESSP-IDPCPROD, Sec. Est. Saúde SP
| ID: biblio-1060074
Responsible library:
BR79.1
Localization: BR79.1
ABSTRACT
An implantable centrifugal blood pump hasbeen developed with original features for a left ventricularassist device. This pump is part of a multicenter and internationalstudy with the objective to offer simple, affordable,and reliable devices to developing countries. Previous computationalfluid dynamics investigations and wear evaluationin bearing system were performed followed byprototyping and in vitro tests. In addition, previous bloodtests for assessment of normalized index of hemolysis showresults of 0.0054 2.46 ¥ 10-3 mg/100 L. An electromechanicalactuator was tested in order to define the bestmotor topology and controller configuration. Three differenttopologies of brushless direct current motor (BLDCM)were analyzed.An electronic driver was tested in differentsituations, and the BLDCM had its mechanical propertiestested in a dynamometer. Prior to evaluation of performanceduring in vivo animal studies, anatomical studieswere necessary to achieve the best configuration and cannulationfor left ventricular assistance. The results wereconsidered satisfactory, and the next step is to test theperformance of the device in vivo.
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Collection:
National databases
/
Brazil
Database:
Sec. Est. Saúde SP
/
SESSP-IDPCPROD
Main subject:
Heart-Assist Devices
Type of study:
Controlled clinical trial
Language:
English
Journal:
Artif Organs
Year:
2011
Document type:
Article
Institution/Affiliation country:
Escola Politécnica da USP/BR
/
Instituto Dante Pazzanese de Cardiologia/BR
/
Unicamp/BR