股骨近端髓内钉结构设计与试件力学检测研究  被引量:1

Structural Design and Mechanical Test of Proximal Femoral Intramedullary Nail

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作  者:侯硕 宜亚丽[1] 李姣 马荣 金贺荣[1] HOU Shuo;YI Ya-li;LI Jiao;MA Rong;JIN He-rong(School of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,China;Hebei Ruihe Medical Device Co.,Ltd.,Shijiazhuang 050000,China)

机构地区:[1]燕山大学机械工程学院,秦皇岛066004 [2]河北瑞鹤医疗器械有限公司,石家庄050000

出  处:《科学技术与工程》2023年第24期10325-10330,共6页Science Technology and Engineering

基  金:河北省重点研发计划项目生物医药创新专项(21372004D)。

摘  要:为解决髓内钉手术存在骨质丢失和螺钉旋转问题,本文基于人体髓腔解剖形态,进行髓内钉三维构型设计,建立髓内钉仿真模型,采用ANSYS进行应力应变仿真分析,对股骨近端髓内钉试制件进行静态压缩试验,分析载荷-位移曲线。有限元分析结果表明:最大应力主要集中在螺旋刀片钉与主钉交界面处;静态压缩试验得到的应力最大位置与有限元分析结果相同,髓内钉承受的最大极限载荷高于股骨头承受的关节力。设计的股骨近端髓内钉的力学性能满足股骨生物学固定物的要求。研究成果可为髓内钉设计提供理论指导。To solve the problems of bone loss and screw rotation in intramedullary nailing,based on the anatomical structure of the human medullary cavity,the three-dimensional configuration of the intramedullary nail was designed and a simulation model was established.The stress-strain simulation analysis was conducted using ANSYS,and a static compression test was performed on the proximal femoral intramedullary nail prototype to analyze the load-displacement curve.The finite element analysis results show that the maximum stress is concentrated mainly at the junction of the helical blade nailing and the main nail.The location of maximum stress obtained from the static compression test is consistent with the finite element analysis results.The maximum limit load that the intramedullary nail could bear is higher than the joint force that the femoral head could withstand.The mechanical properties of the designed proximal femoral intramedullary nail meet the requirements of biological fixation devices for the femur,providing theoretical guidance for the design of intramedullary nails.

关 键 词:髓内钉 解剖形态 仿真 静态压缩试验 力学性能 

分 类 号:TH781[机械工程—仪器科学与技术]

 

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