2026-04-04T06:36:20Zhttps://recercat.cat/oai/request

oai:recercat.cat:10256/258852024-12-20T10:30:20Zcom_2072_452955com_2072_2054col_2072_453061

00925njm 22002777a 4500 dc Bagudanch Frigolé, Isabel author Garcia-Romeu, Maria Luisa author Ferrer Real, Inés author Ciurana, Quim de author 2018-01-02 Purpose – The purpose of this paper is to demonstrate the feasibility of incremental sheet forming (ISF), using the most common variants, single-point incremental forming (SPIF) and two-point incremental forming (TPIF), to produce prototypes of customized cranial implants using a biocompatible polymer (ultrahigh molecular weight polyethylene, UHMWPE), ensuring an appropriate geometric accuracy and cost. Design/methodology/approach – The cranial implant is designed based on computerized tomographies (CT) of the patient, converting them into a 3D model using the software InVesalius. To generate the toolpath for the forming operation computer-aided manufacturing (CAM) software is used. Once the cranial implant is manufactured, a 3D scanning system is used to determine the geometric deviation between the real part and the initial design. Findings – The results corroborate that it is possible to successfully manufacture a customized cranial implant using ISF, being able to improve the geometric accuracy using the TPIF variant with a negative die. Originality/value – This paper is one of the first research works in which a customized cranial implant is successfully manufactured using a flexible technology, ISF and a biocompatible polymer. The use of polymeric implants in cranioplasty is advantageous because of their lightweight, low heat conductivity and mechanical properties similar to bone. Furthermore, the cost of the implant has been calculated considering not only the raw materials and manufacturing time but also the environmental impact, revealing that it is a cheap process with a low lead-time http://hdl.handle.net/10256/25885 Fabricació additiva Additive manufacturing Prototipatge ràpid Rapid prototyping Impressió 3D Three-dimensional printing Polímers en medicina Polymers in medicine Materials biomèdics Biomedical materials Customized cranial implant manufactured by incremental sheet forming using a biocompatible polymer