Optimization Design of Interbody Fusion Cage with Different Bone Densities Printed in 3D
10.3969/j.issn.1671-7104.230238
- VernacularTitle:3D打印不同骨密度的椎间融合器优化设计
- Author:
Wei LIU
1
;
Jingsheng ZHAO
;
Yilin WANG
;
Suli LI
Author Information
1. 陕西国防工业职业技术学院智能制造学院,西安市,710300;航天高端制造陕西省高校工程研究中心,西安市,710300
- Keywords:
3D printing;
fusion cage;
porous structure;
finite element analysis
- From:
Chinese Journal of Medical Instrumentation
2024;48(1):20-25
- CountryChina
- Language:Chinese
-
Abstract:
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.
