摘要
依据颈椎的原始数据,通过医学图像处理和逆向建模操作分别重建了颈椎C6段和C7段的模型,并将其装配形成颈椎C6~C7节段,得到椎间融合器基本数据。依据基本数据分别建立了矩形多孔、梯度多孔、八面体多孔椎间融合器模型。对融合器施加成年男性颈部所受到的最大力,通过有限元分析求解应力、应变以及最大变形量。计算设计的椎间融合器的弹性模量下降情况,对不同孔隙率的矩形多孔结构椎间融合器进行分析,并优化设计。结果可知,3种结构的融合器均有不同程度的弹性模量下降,而矩形结构椎间融合器的孔隙率在60%左右时,弹性模量下降得最多。
Based on the original data of cervical spine,the models of cervical C6 and C7 segments were reconstructed through medical image processing and reverse modeling operations,then the models were assembled to obtain the basic data of interbody fusion cage.According to the basic data,the structures of rectangular porous,gradient porous and octahedral porous interbody fusion cages were established respectively.Maximum force on the adult male neck was applied to the fusion device,and the stress,strain and maximum deformation of the fusion device were solved by finite element analysis.The elastic modulus decrease of the design,and the rectangular porosity structures with different porosity were analyzed and optimized.The results showed that the elastic modulus of the fusion cage with three structures decreased in varying degrees,and the porosity of the interbody fusion cage with rectangular structure was about 60%,which was the most decreased elastic modulus.
作者
刘伟
赵京生
王祎霖
李素丽
LIU Wei;ZHAO Jingsheng;WANG Yilin;LI Suli(School of Intelligent Manufacturing,Shaanxi Institute of Technology,Xi'an,710300;Engineering Center of Aerospace High-End Manufacturing-Universities of Shaanxi Province,Xi'an,710300;College of Mechanical Engineering,Xi'an University of Science and Technology,Xi'an,710054;Xi'an Taihui Machinery Technology Co.Ltd.,Xi'an,710086)
出处
《中国医疗器械杂志》
2024年第1期20-25,共6页
Chinese Journal of Medical Instrumentation
基金
陕西省秦创原“科学家+工程师”队伍建设项目(2022KXJ-071)
2022年度秦创原成果转化孵化能力提升项目(2022JH-ZHFHTS-0012)
陕西省重点研发计划——“两链”融合重点专项-秦创原总窗口产业集群项目(2023QCY-LL-02)
陕西省西咸新区科技计划(2022-YXYJ-003,2022-XXCY-010)
陕西职业教育乡村振兴研究院2022年度研究课题(22YB020)
陕西国防工业职业技术学院2023年度科研计划项目(Gfy23-10)。
关键词
3D打印
融合器
多孔结构
有限元分析
3D printing
fusion cage
porous structure
finite element analysis
