钻头刃型结构和钻削参数对骨骼钻削过程的影响

The Influence of Drill Bit Structure and Drilling Parameters on Bone Drilling Process

目的在不同钻型和钻削参数下对骨骼进行钻削力学和热学分析,降低钻骨过程中的钻削力和钻削温度,减小对周围骨组织的损伤。方法通过有限元仿真软件Advant Edge建立骨骼钻削模型并与猪股骨钻削实验对比,分析标准麻花钻与3种标准群钻在不同转速和进给速度下的仿真与实验结果。结果仿真与实验对比发现,钻头刃型、钻头转速和进给速度对钻削力和钻削温度的影响趋势一致,建立的仿真模型可信。结论相同钻削条件下,钻橡胶群钻比标准麻花钻的钻削力和钻削温度更低。研究结果为群钻在骨折手术中的应用提供理论依据。

Objective To make drilling mechanical and thermal analysis of bones with different drill bits and drilling parameters,so as to reduce the drilling force and drilling temperature in drilling process and decrease the damage to surrounding bone tissues.Methods The bone drilling model was established by finite element simulation software AdvantEdge.By comparison with the pig femur drilling experiment,the simulated and experimental results of standard twist driII and three standard multi-facet drills at different speeds and feed rates were analyzed.Results The simulation and experiment comparison showed that the influences of driII bit structure,drilling speed,feed rate on drilling force and drilling temperature were consistent,and the established simulation model was credible.Conclusions Under the same drilling conditions,the multi-facet driII for drilling rubber had lower drilling force and drilling temperature than the standard twist drill.The research findings provide theoretical basis for the application of multi-facet driII in fracture surgery.