![]() ![]() Furthermore, mesh editing programs like Meshmixer do not offer parametric editing tools which would be used to alter measurable dimensions of a wheelchair cushion, such as the height or depth of the cushion for a better fit in a wheelchair base. However, this process was not tested with clinical specialists, who may be less familiar with digital design tools and require more time and training to create an appropriate orthosis. The new design and fabrication method suggested digitisation and 3D printing can cut costs and production time for orthosis producers. developed an inexpensive, efficient method for scanning, designing, and 3D printing a thumb orthosis using only Meshmixer as the digital model creation tool. Mesh-specific software, like Meshmixer (Autodesk) or MeshLab (ISTI-CNR), offer sculpting as well as refinement and smoothing tools to alter the shape of a mesh object iteratively. Because of this, if a 3D scan needs to be edited before manufacturing – to make a solid cushion or back support with the scanned surface, for example – the scan must be altered in a mesh-specific software or ‘converted’ into a CAD model and edited in a CAD environment. Mesh objects are made up of tessellations that, when imported into a computer-aided design (CAD) program, are not editable because they are recognised as either a single entity or as thousands of small, individual surfaces. These scanning techniques include laser trigonometric triangulation-based scanners and structured light scanners which both generate the digital recreation of an object or surface as a point cloud or a mesh object. ![]() However, there are a large portfolio of devices customized to a patient for which the Standard Tessellation File (STL) file is created via alternative strategies. Patient specific 3D printing typically begins with CT and MR images that are then segmented and converted to printable files. Methods to capture shapes include contact digitisers and non-contact scanning, including high-end time-of-flight or triangulation laser scanners as well as more affordable structured-light scanners. Custom wheelchair seating systems require shape capture of a surface moulded to the shape of the wheelchair user to design an effective personalised postural aid and pressure relieving intervention. Custom contoured seating (CCS) refers to customized seating that is based on an impression taken of a wheelchair user’s body and matches exactly to that shape. To prevent or correct such issues, customized wheelchair seating is manufactured for individual needs. Wheelchairs enable autonomy in many individuals across the world but sitting in a wheelchair for long periods can lead to pain, discomfort, and injuries such as pressure ulcers and spinal deformities. The Creative Commons Public Domain Dedication waiver ( ) applies to the data made available in this article, unless otherwise stated in a credit line to the data. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. ![]()
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