具有梯度模量的3D打印糖尿病鞋垫设计
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国家重点研发计划(2018YFB1107000),国家重点研发计划(2018YFE0207900),广东省重点研发计划(2018B090906001),中央大学基础研究基金项目


Design of Three-Dimensional Printed Diabetic Insoles with Gradient Modulus
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    摘要:

    目的 以精准降低足底压力为目标,提出一种快捷、低成本的个性化糖尿病足部建模及鞋垫的设计方案。方法 通过对标准足骨模型进行缩放的方法,构建患者足部有限元模型,分析足部生物力学,并根据鞋垫模量和足底压力数学映射模型,建立具有梯度模量的个性化鞋垫三维模型。利用3D打印技术进行鞋垫制造,并开展实验验证。结果 采用缩放建模方法所建足部模型的有限元预测的相关力学指标与CT重建模型的结果基本接近,最大误差控制在15%以内。与穿戴普通鞋垫相比,使用个性化鞋垫后足底峰值压力有效降低约20%。该简化设计方案的时间和经济成本降低约90%。结论 该糖尿病鞋垫设计方案缩短设计周期,其中制备的个性化鞋垫有效精准降低足底压力,降低足部溃疡的风险,为个性化糖尿病鞋垫的推广提供技术基础。

    Abstract:

    Objective To propose a quick and low-cost personalized diabetic foot modeling and insole design scheme, so as to reduce the plantar pressure accurately. Methods The foot model of the patient was constructed by scaling the model with foot feature parameters, to make biomechanical analysis on plantar pressure. By means of numerical mapping model of insole elasticity and plantar pressure, the three-dimensional (3D) personalized insole model with gradient modulus was constructed. The insole was then manufactured via 3D printing technology and used for experimental validation. Results The related mechanical parameters from finite element prediction of the foot model constructed by the scaling modeling method were close to those of the CT reconstructed model, and the maximum error was controlled within 15%. Compared with wearing the normal insole, the peak pressure of the personalized insole was effectively reduced by 20%. The time and economic cost of this simplified design was reduced by approximately 90%. Conclusions The design scheme of the diabetes insole shortens the design cycle, and the personalized insole can effectively and accurately reduce the sole pressure, and reduce the risk of foot ulcer, which provides a technical basis for the promotion of the personalized diabetes insole.

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朱思尧,李涤尘,汤磊,孙畅宁,康建峰,赵宏谋,张言,王玲.具有梯度模量的3D打印糖尿病鞋垫设计[J].医用生物力学,2021,36(1):102-109

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  • 收稿日期:2019-11-19
  • 最后修改日期:2020-01-07
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  • 在线发布日期: 2021-02-26
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