Navrat, Pilot study of the wrist orthosis design process, Rapid Prototyping Journal, 20 (1) (2014) 27–32.Ī. Malloy, P lastic part design for injection molding, Second Ed., Hanser Gardner Publications, Cincinnati (2000).ĭ. Jeong, Conditions of rib design for polycarbonate resin with high glossy surfaces, Journal of Mechanical Science and Technology, 27 (10) (2013) 3023–3028. Korean Agency for Technology and Standards, 6 th Report of Size Korea 3D-scan Measurement project, kats.go.kr/. Liu, Additive fabrication of custom pedorthoses for clubfoot correction, Rapid Prototyping Journal, 16 (3) (2010) 189–193. Webb, A review of rapid prototyping (RP) techniques in the medical and biomedical sector, Journal of Medical Engineering & Technology, 24 (4) (2000) 149–153.ĭ. Bonato, Patient specific ankle-foot orthoses using rapid prototyping, Journal of Neuro Engineering and Rehabilitation, 8 (1) (2011). Toshev, Medical rapid prototyping applications and methods, Assembly Automation, 25 (4) (2005) 284–292.Ĭ. Manthey, Basic Splinting Techniques, The New England Journal of Medicine, 359 (26) (2008) e32. We anticipate that the hybrid method for customized 3D printed plastic orthosis can become a balanced solution that can be applied in the current additive manufacturing field in terms of manufacturing time and cost. The time cost for manufacturing also was estimated as 1/3 of that of other methods. From the result of wearing the prototype, it was confirmed that the new wrist orthosis has proper strength, good ventilation, and light weight. The outer cover is produced in advance using an injection molding method with three sizes based on the sizes of the wrist. The core concept of the hybrid model is to separate the plastic cast into two parts: an inner structure produced by 3D printing that surrounds the skin and an outer cover that is fastened to the inner structure that protects the injured part from external forces. Compared with the previously presented wrist orthosis using 3D printing and three-dimensional scanning (3D scanning) technology, the proposed hybrid model significantly reduces the manufacturing time and cost. This case study describes a hybrid manufacturing methodology that utilizes three-dimensional printing (3D printing) and injection molding technology to create a wrist orthosis that solves the problems of the plaster casts. ![]() ![]() Because of this, wearing this cast can generate problems including a variety of skin diseases, pilosis, and joint and ligament injuries. The currently used plaster cast for wrist orthotic treatment is relatively heavy, non-removable, and unventilated.
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