Investigation of future 3D printed brace design parameters: evaluation of mechanical properties and prototype outcomes

K. Ng, K. Duke, E. Lou
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引用次数: 8

Abstract

Aim: Spinal brace wear time affects treatment effectiveness of adolescent idiopathic scoliosis but remains challenging with the brace’s bulkiness. This study aims to determine the appropriate material and thickness to improve wear comfort. Materials & methods: Thirty-one specimens were tested with 13 ULTEM1010 and 13 Nylon12 potential materials and 5 standard polypropylene material in 2.5, 3.25 and 4 mm thicknesses to evaluate mechanical properties. Donning tests of ULTEM1010 and Nylon12 printed braces were conducted. Results: Nylon12 with 2.5–3.25 mm thickness had higher flexibility and the closest mechanical characteristics as 4-mm thick polypropylene. ULTEM1010 brace fractured after 615-times and Nylon12 brace handled 2920-times of opening and closing. Conclusion: Nylon12, 2.5–3.25 mm are appropriate design parameters. Further clinical study can validate long term brace effectiveness.
未来3D打印支架设计参数的研究:机械性能和原型结果的评估
目的:脊柱支架的佩戴时间影响青少年特发性脊柱侧凸的治疗效果,但由于支架的体积较大,仍然具有挑战性。本研究旨在确定合适的材料和厚度,以提高穿着舒适性。材料与方法:用13种ULTEM1010和13种Nylon12电位材料和5种2.5、3.25和4 mm厚度的标准聚丙烯材料对31个试样进行力学性能测试。对ULTEM1010和尼龙12打印牙套进行了佩戴试验。结果:2.5 ~ 3.25 mm厚度的尼龙具有更高的柔韧性,力学特性与4 mm厚度的聚丙烯最接近。ULTEM1010支架断裂615次,尼龙12支架断裂2920次。结论:尼龙12、2.5 ~ 3.25 mm为适宜的设计参数。进一步的临床研究可以验证支具的长期有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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CiteScore
2.70
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