Department of Cardiology, Institute of Dante Pazzanese of Cardiology, Sao Paulo, Brazil
Case Report
First Studies with a DLC Pivot Bearing for Ventricular Assist Devices
Author(s): Eduardo Guy Perpetuo Bock*, Rosa Correa Leoncio de Sa, Tarcisio Fernandes Leao, Evandro Drigo da Silva, Vladimir Jesus Trava Airoldi and Aron Jose Pazin de Andrade
Ventricular Assist Devices (VAD) are blood pumps that can
stabilize the hemodynamics of patients with severe heart failure.
The VAD indication is for therapeutically assist before, during
and/or after transplant, recovery and destination therapic. Our
group propose a centrifugal blood pump as VAD that consists of a
rotor magnetically coupled, suspended by pivot bearings. The
pivot is mainly a ceramic axis with rotational movement and
the bearing is a polished surface made mainly with polymers.
As a whole system, a VAD should be made of long-life
biomaterials to avoid degradation or deformation during
application lifetime. Surface modification techniques have been
widely studied and implemented to improve properties such
as biocompatibility and durability of applicable materials.
The chemical vapour deposition technique allows substrates
having.. View More»
DOI:
10.37532/acr.24.13.1.001--003
