Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Manufacture of bone fracture stabilizing plates in biocomposite by resin infusion and by Hand Lay Up: a comparison
Submission Author:
João Pedro Costa Eliziário , PR , Brazil
Co-Authors:
andrevidy honório, João Pedro Costa Eliziário, Paulo Durigan, Romeu Rony Cavalcante da Costa, Sandra Mara Domiciano
Presenter: andrevidy honório
doi://10.26678/ABCM.COBEM2023.COB2023-2255
Abstract
Bone fractures can occur by accident, shaving, or advancing age at any time in a human's life. To solve this fracture problem, fracture stabilizing plates are used in the bone healing process after the fracture has occurred. These plates are screwed to the intact parts of the fractured bone, keeping them together, enabling the recovery of integrity by means of bone neoformation, forming bone callus in the fractured region. This type of implant is mostly manufactured in metallic materials. However, these materials have some disadvantages, such as fatigue failures, allergic reactions, high cost, reduction in bone density due to the high rigidity of the implant, etc. An alternative are fracture-stabilizing plates made of composite material that, besides having a lower cost, also present a greater mechanical compatibility with bones. Thus, the aim of this work is to manufacture and characterize Dynamic Compression Plates (DCP) in polymeric composite material, made of polyurethane (PU) derived from vegetable oils and reinforced with fiberglass, aiming at a process that guarantees an adequate manufacturing for the safe use in medical implants. To this end, fracture stabilizer plates were fabricated in a metallic mold and also by the Hand Lay Up method. The present work is important because it provides an alternative to the metals used, as well as because it is a non-heat conducting material, which is one of the problems with stabilizer plates in metals. The composite plate will have the versatility of the orthopedic surgeon to choose where he will make the holes for fixation of the plate, another advantage is that one can project the desired properties in the plate, i.e., properties such as strength and stiffness not so above the bone, so that the body allows bone neoformation in the fractured region.The mold manufactured reached the expected result since it allowed to manufacture fracture stabilizing plates in scale-like to the base with low variation in thickness. On the other hand, the plate manufactured by the Hand Lay Up method had a variability in thickness, but a significantly lower presence of trapping air was noted compared to the first method, which results in a more uniform and resistant material.
Keywords
bone fracture stabilizing plates, composite manufacturing, Biocomposites
