Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
DESIGN, MANUFACTURE AND TESTS OF AN EXPERIMENTAL PULSATILE FLOW BENCH
Submission Author:
Pedro Eduardo Oliveira de Andrade , PB
Co-Authors:
Emerson Jeronimo, Pedro Eduardo Oliveira de Andrade, Leonardo Pereira de Lucena Silva, Francisco Augusto Vieira da Silva, JOAB ANDRADE, Wanderley Amorim Júnior
Presenter: Pedro Eduardo Oliveira de Andrade
doi://10.26678/ABCM.COBEM2023.COB2023-2309
Abstract
Stent is a medical device that can be defined as a metal or polymer cylinder, usually in the form of a mesh, which is placed in the lumen of an anatomical vessel (such as an artery or a bile duct) with the aim of reopening the passage of that vessel. which is wholly or partially obstructed, usually in order to maintain normal blood flow. Due to its application directly influencing the patient's health, there is a need to research ways to improve the physical and chemical properties, making stent technology more reliable without compromising biocompatibility. Thus, the present work proposes the development of an experimental pulsatile flow bench, according to the ASTM 2477-7 Standard, which will allow the performance of tests on Stents, simulating the conditions to which this device will be submitted when inserted in the human body. The execution of the project was divided into five stages: initially, the informational project was carried out, where a bibliographical survey was carried out on the already existing equipment, aiming to determine the requirements and specifications. Then, the conceptual project was executed, where it was sought, through schematic drawings and diagrams, to create a concept that best met the aforementioned requirements and specifications. Next, the preliminary project was elaborated, where the materials were defined and the dimensioning of the bench was executed. After that, the detailed design and manufacture of the prototype was carried out. Finally, equipment instrumentation tests were carried out, allowing it to be controlled and monitored, thus guaranteeing the reliability of the test. As a result, it was possible to observe that the bench was able to simulate pulsatile cycles with pressure variation between 0 mmHg and 220 mmHg, the heating system worked properly, showing variations of up to 4 °C in 15 minutes of test, with an average variation of 2 bpm being observed during the execution of the tests. Thus, it was concluded that it was possible to develop a low-cost pulsatile flow experimental bench with a control system that enabled the remote monitoring of pressure, temperature and beats per minute data, allowing the performance of tests as recommended in ASTM 2477-7.
Keywords
Pulsatile Flow, Experimental bench, Stents, Closed-loop flow
