摘要
目的改进颈椎间盘假体存在的问题。方法分析自然状态下人体颈椎间盘的功能要求,应用计算机辅助设计(CAD)技术和ANSYS分析手段,优化设计制造由两种高分子材料复合成型、双层结构的新型颈椎间盘假体。结果双层圆柱结构模型(外层为圆柱状纤维环,内层为圆柱状髓核)的颈椎间盘假体具有可以保证上下锥体所受的应力都比较小;正常状态下,可使假体在外部纤维环和内层髓核的最大应力都比较小;该型结构简单,需要的模具结构简单,定位方便准确。结论新型颈椎间盘假体的双层结构为双圆柱结构。
ObjectiveTo solve some problem in present cervical spinal disc.MethodsAfter analyzing the function of cervical spinal disc, 2 kinds of materials were chosen to design and fabricate the double-layer cervical spinal disc prosthetic. CAD and ANSYS technologies were used to optimize 4 kinds of the new prosthetic structure.Results and ConclusionThe materials if the prosthetic is proper, and the double-layer column structure of the new prosthetic shows some excellence characteristics, including maximum stress of nucleus and annulus properly, simple structure and can be facilitated and exactly graft. [
出处
《中国康复理论与实践》
CSCD
2005年第3期173-174,共2页
Chinese Journal of Rehabilitation Theory and Practice
基金
国家自然科学资金资助项目(No.50235020)
高等学校优秀青年教师教学和科研奖励基金资助。
关键词
颈椎间盘
假体
双层结构
优化设计
cervical spinal disc
prosthetic
double-layer structure
optimized design
