A strategy for designing of customized electromechanical actuators of blood pumps

Abstract

Congestive heart failure is a pathology of global incidence that affects more than 20 millions of people worldwide. It is largely categorized and consists of a progressive clinical state when the heart weakens and fails to pump blood at physiological rates commensurate with the requirements of tissues. Thus, two main alternatives for treatment are cardiac transplant and therapies associated with ventricular assist devices (VADs). 1,2 The implantable centrifugal blood pump (ICBP) is a VAD for long-term assistance initially designed for bridge to transplant (BTT) in conjunction with several research institutions. 3,4 Actuators are important for the performance of blood pumps and are intrinsically connected to the operation of the equipment. Several topologies have been proposed over the years in area of artificial organs and VADs. 5-14 This article presents a design strategy for development of a customized electromagnetic actuator for ICBP elaborated

Filmes Finos de Alumina em substratos de alumínio 5052 por processo de Oxidação Eletrolítica à Plasma

“…Os DAVs são bombas de sangue pulsáteis, axiais ou centrífugas, usadas para substituir parcialmente ou completamente um ventrículo doente de pacientes que aguardam um transplante de coração ou como terapias alternativas [10][11][12]. Existem estudos que afirmam que alguns pacientes que usaram um DAV enquanto aguardavam um transplante cardíaco se recuperaram da Insuficiência Cardíaca porque tiveram uma redução da carga de esforço sobre o coração fazendo com que não precisassem de nova cirurgia [13][14][15].…”

Latin American Society for Artificial Organs, Biomaterials, and Tissue Engineering: Update 2020

“…This device can be surgically implanted through a small left intercostal incision in a minimally invasive manner 2 . An article by de Souza et al presents the design strategy for development of a customized ventricular assist device electromagnetic actuator 3 . Leao and colleagues developed a control system/algorithm consisting of a control system that harmoniously adjusts pump speed without additional sensors, considering the patient's clinical condition and physical activity 4 …”

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“…The contact with researchers from the University of São Paulo (USP) generated FAPESP's first thematic project and each of the colleagues there had the opportunity to develop their own specific theme within the large project of this CFVAD. The project title even focused on the pump's propulsion system (37).…”