Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
An analysis of deformation in an arteriovenous fistula model
Submission Author:
Jonhattan Ferreira Rangel , RN
Co-Authors:
Kleiber Lima de Bessa, Willyam Brito de Almeida Santos, Sandi Souza, Valquíria Bomfim Fernandes, Jonhattan Ferreira Rangel
Presenter: Jonhattan Ferreira Rangel
doi://10.26678/ABCM.COBEM2017.COB17-1682
Abstract
The number of Patients with chronic renal failure (CRF) has have been rising drastically in recent years. Given the need for treatment of these patients arteriovenous fistula (AVF) is recognized by several researchers as being the best access for treatment by hemodialysis. After the creation of the fistula, there is an increase in the blood flow in this region, resulting in new loads on the walls of the vessels, which may cause some pathological problems. Through mathematical modeling this work related the properties between a real AVF and a silicone one in order to obtain an equivalent thickness in the artificial fistula whose deformations are proportional to the ones suffered by the real vessel. The treatment and cleaning of the computerized tomography of a patient with fistula, the 3D printing and the preparation of the molds for the manufacture of fistulas in paraffin and later the fistulas in silicone were carried out. After the tests, we obtained the deformations for three different regions of the AVF and compared with the results obtained by mathematical models. The initial experimental results, for some regions, were approximated to the results of some theoretical models, however due to the disparity between the theoretical and experimental result, there is still the need to improve the methodology.
Keywords
Chronic renal failure, Arteriovenous Fistula, artificial blood vessels, stress-strain
