医用克氏针大挠度弯曲的力学性能评价  

Mechanic property evaluation of medical Kirschner wire's large deflection bending

作　　者：王海龙 吕营[1,2] 安美文 侯春胜 Wang Hailong;Lü Ying;An Meiwen;Hou Chunsheng(Institute of Applied Mechanics and Biomedical Engineering,School of Mechanics,Taiyuan University of Technology,Taiyuan 030024,Shanxi Province,China;Shanxi Provincial Key Laboratory of Material Strength and Structure Impact,Taiyuan 030024,Shanxi Province,China;Department of Medical Engineering,Tongliao City Hospital,Tongliao 028000,Inner Mongolia Autonomous Region,China;Shanxi Provincial Burn Treatment Center,General Hospital of Tisco,Taiyuan 030009,Shanxi Province,China)

机构地区：[1]太原理工大学应用力学与生物医学工程研究所太原理工大学力学学院,山西省太原市030024 [2]材料强度与结构冲击山西省重点实验室,山西省太原市030024 [3]通辽市医院医学工程科,内蒙古自治区通辽市028000 [4]太钢总院山西省烧伤救治中心,山西省太原市030009

出　　处：《中国组织工程研究》2019年第4期567-572,共6页Chinese Journal of Tissue Engineering Research

基　　金：国家自然科学基金(11372208);课题名称:皮肤创伤治疗机理的力学生物学研究;项目负责人:安美文~~

摘　　要：背景:克氏针用于临床牵引、矫正时,治疗方案的精确量化及安全性评估尤为重要。目的:通过实验和理论分析,对临床上医用克氏针在大挠度弯曲状态下的力学性能及稳定性进行分析,评价将其弹力作为牵引正畸方案的合理性。方法:对同一批次不同直径、不同长度的克氏针进行大挠度弯曲(U型变形)实验,结合实验数据,对其力学过程进行分析,并拟合出关于不同参数下大挠度弯曲时的弹力公式。结果与结论:(1)U型克氏针弹力数值是关于克氏针尺寸因子(D^4/L^2)和时间(t)的函数,在一定时间内数值稳定;(2)结果表明,克氏针大挠度弯曲所产生的弹力在治疗期内是稳定的,临床上将其作为正畸治疗牵引力的方案合理。此研究可为U型克氏针在临床应用的精准化提供理论支持,并为U型克氏针的类似应用提供参考。BACKGROUND:When Kirschner wire is used for clinical traction and correction,the precise quantification and safety assessment of the treatment plan are particularly important.OBJECTIVE:To analyze the mechanical properties and stability of medical Kirschner wire in large deflection bending state by experimental and theoretical analysis,and to evaluate the rationality of using the elastic force as a traction orthodontic solution.METHODS:The large deflection bending(type U deformation)experiment of the same batch of Kirschner wires with different diameters and lengths was carried out.Combining with the experimental data,the mechanical process was analyzed,and the formula for the elastic force of large deflection bending under different parameters was fitted.RESULTS AND CONCLUSION:(1)Elastic force of type U Kirschner wire was a function of the size factor(D4/L2)of Kirschner wire and time(t),which was stable over time.(2)To conclude,the elastic force produced by Kirschner wire’s large deflection is stable during treatment,and it is a reasonable plan for the traction of orthodontic treatment.This study provides theoretical support for the precise quantification of type U Kirschner wire in clinical application and provides reference for similar applications of type U Kirschner wire.

关 键 词：力学 正畸学 组织工程 克氏针 大挠度弯曲 牵引正畸 弯曲克氏针的力学性能 国家自然科学基金 

分 类 号：R318.01[医药卫生—生物医学工程]