中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (4): 567-572.doi: 10.3969/j.issn.2095-4344.1038

• 骨与关节生物力学 bone and joint biomechanics • 上一篇    下一篇

医用克氏针大挠度弯曲的力学性能评价

王海龙1,2,3,吕 营1,2,安美文1,2,侯春胜4   

  1. 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   0300242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
  • 出版日期:2019-02-08 发布日期:2019-02-08
  • 通讯作者: 安美文,博士生导师,教授,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;材料强度与结构冲击山西省重点实验室,山西省太原市 030024
  • 作者简介:王海龙,男,1982年生,内蒙古自治区托克托县人,汉族,2018年太原理工大学毕业,硕士,工程师,主要从事生物医学工程方面的研究。
  • 基金资助:

    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

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

Wang Hailong1, 2, 3, Lü Ying1, 2, An Meiwen1, 2, Hou Chunsheng4   

  • Online:2019-02-08 Published:2019-02-08
  • Contact: An Meiwen, Doctoral supervisor, Professor, 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
  • About author:Wang Hailong, Master, Engineer, 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
  • Supported by:

     the National Natural Science Foundation of China, No. 11372208 (to AMW)

摘要:

文章快速阅读:

 
 
 
文题释义:
克氏针:克氏针是临床上骨科常用到的一种刚性不锈钢丝,一侧被加工成尖锐的棱锥,在电钻的驱动下可经皮进入骨骼,广泛用于骨科手术中固定多种类型的骨折,也被用于制作多种牵引支具。
大挠度弯曲:挠度原指在受力或者非均匀温度变化下杆件轴线在垂直轴线方向的线性位移,大挠度则指杆件在轴线方向的偏离尺寸较之杆件长度或者直径不再是小量,相关计算也不适用微小变化情况下的计算思路和线性假设。
 
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:①U型克氏针弹力数值是关于克氏针尺寸因子(D4/L2)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。

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程
ORCID: 0000-0002-5752-7407(王海龙)

关键词: 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

Abstract:

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.

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程

Key words: Mechanics, Orthodontics, Tissue Engineering

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