中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (16): 2333-2339.doi: 10.3969/j.issn.2095-4344.2016.16.007

• 组织工程骨及软骨材料 tissue-engineered bone and cartilage materials • 上一篇    下一篇

碳化硅-碳复合材料用于小关节假体:生物力学研究及三维有限元分析

杨永超1,谈 清2,杨 萃3,陆 芸4   

  1. 1天津医科大学研究生院,天津市  300070;2湘西土家族苗族自治州人民医院骨外科,湖南省吉首市  416000;天津市泰达医院,3科教科,4骨外科,天津市  300457
  • 收稿日期:2016-03-06 出版日期:2016-04-15 发布日期:2016-04-15
  • 通讯作者: 陆芸,主任医师,院长,天津市泰达医院科教科骨外科,天津市 300457
  • 作者简介:杨永超,男,1988年生,山东省泰安市人,天津医科大学骨外科在读硕士,主要从事手显微外科研究。
  • 基金资助:

    天津市科技计划项目(12ZCZDSY02800);滨海新区卫生局医药卫生科技项目(2011BHKL003)

Silicon carbide-carbon composites for small joint prosthesis: a three-dimensional finite element model for biomechanical study

Yang Yong-chao1, Tan Qing2, Yang Cui3, Lu Yun4   

  1. 1Graduate School of Tianjin Medical University, Tianjin 300070, China; 2Department of Orthopedics, Xiangxi Tujia and Miao Autonomous Prefecture People's Hospital, Jishou 416000, Hunan Province, China; 3Department of Science and Technology, 4Department of Orthopedics, Tianjin TEDA Hospital, Tianjin 300457, China
  • Received:2016-03-06 Online:2016-04-15 Published:2016-04-15
  • Contact: Lu Yun, Chief physician, Department of Orthopedics, Tianjin TEDA Hospital, Tianjin 300457, China
  • About author:Yang Yong-chao, Studying for master’s degree, Graduate School of Tianjin Medical University, Tianjin 300070, China
  • Supported by:

    Tianjin Science and Technology Project, No. 12ZCZDSY02800; Medical Science and Technology Project of Binhai District Health Bureau, No. 2011BHKL003

摘要:

文章快速阅读:

  
文题释义:
碳化硅-碳复合材料:是利用化学气相渗透法在碳/碳复合材料表面进行碳化硅改性后制成的新型复合材料,具有更高的比强度及比模量、极佳的机械性能,无免疫排斥反应,具有良好的生物相容性,是小关节假体的最佳材质。
碳化硅-碳复合材料的性能:碳/碳复合材料因本身性质的疏松性决定了有一定的气孔率,进行碳化硅改性处理后,改变了碳基质表面的微观结构和纤维-基质结合方式,增加了传统碳/碳复合材料的密度,使得其表面更加致密,因而增加了它的抗弯抗压特性;同时保留了部分气孔率,因此保留了碳/碳复合材料原有的假塑性特性,可有效缓冲突然暴力所造成的强大冲击力,避免小关节假体材料的断裂、破坏。碳化硅涂层表面致密且光滑,因此有更小的摩擦系数,降低了小关节间因摩擦造成的磨损消耗,改进了传统碳/碳复合材料的不足,在力学方面更加符合小关节假体的要求。
  
背景:碳化硅-碳复合材料应用广泛,但其在医学假体材料领域无相关实验研究,效果尚不明确。
目的:探究新型碳化硅-碳复合材料的力学性能,采用三维有限元分析法模拟小关节的受力情况,论证其作为人工小关节假体替代材料的可行性。
方法:将规定尺寸的碳化硅-碳复合材料与传统碳/碳复合材料放置于电子万能试验机中,测定并计算材料的压缩弹性模量、抗压缩强度、最大抗压缩力、弯曲弹性模量、抗弯强度及最大抗弯力,随后测定并计算材料的摩擦系数、磨损体积和质量磨损率。应用三维有限元分析法,将第三掌骨有限元模型分别定义碳/碳复合材料及碳化硅-碳复合材料单元类型后,给予轴向200 N的作用力,分析其总位移及节点应力情况。
结果与结论:碳化硅-碳复合材料的压缩弹性模量、抗压缩强度、最大抗压缩力、弯曲弹性模量、抗弯强度及最大抗弯力高于碳/碳复合材料(P < 0.05),摩擦系数、磨损体积和质量磨损率、最大节点应力及最大总位移低于碳/碳复合材料(P < 0.05)。结果说明,碳化硅-碳复合材料具有良好的力学性能、抗磨损性能,抗压缩形变及抗应力作用。
中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程
ORCID:0000-0002-3006-9100(陆芸)

关键词: 生物材料, 骨生物材料, 碳, 有限元分析, 骨和骨组织, 图像处理, 计算机辅助, 成像, 三维, 材料试验, 力学, 生物假体, 生物力学, 关节内骨折

Abstract:

BACKGROUND: Silicon carbide-carbon (C/C-SiC) composite materials are widely used, but no relevant experimental studies on medical prosthesis materials have been reported.

OBJECTIVE: To demonstrate the feasibility of C/C-SiC composite materials as a substitute for facet joint prosthesis based on the biomechanical research and three-dimensional finite element analysis.
METHODS: The predetermined size C/C-SiC composites and traditional carbon/carbon(C/C) composite materials were placed in an electronic universal testing machine, to measure and calculate material compressive elastic modulus, compressive strength, maximal anticompression force, flexural modulus, bending strength and maximal antibending force. Afterwards friction coefficient, wear volume and weight wear rate were measured. Using three-dimensional finite element analysis, finite element models of the third metacarpal bone were defined as C/C and C/C-SiC composite element types, respectively. 200 N axial force was applied to analyze the total displacement and node stress.
RESULTS AND CONCLUSION: Compressive elastic modulus, compressive strength,maximal anticompression force, flexural modulus, bending strength and maximal antibending force of C/C-SiC composites were significantly higher than those of the C/C materials (P < 0.05); friction coefficient, wear volume, weight wear rate, total displacement as well as node stress of C/C-SiC composites were significantly lower than those of C/C materials (P < 0.05). These results prove that C/C-SiC composite has favorable mechanical properties, antiwear ability, compression resistance and stress resistance.
中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程

Key words: Finger Injuries, Fractures, Bone, Hand Injuries, Bone Substitutes, Arthroplasty, Replacement, Finger, Joint Prosthesis, Tissue Engineering