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Title:: Integral design and simulation analysis of ultrasonic bone scalpel facing on human bone cutting

作者:: 刘子豪1; 2; 孙春生1; 2; 蔡晨需1; 2; 张勤河1; 2△; 1.山东大学机械工程学院，济南 250061；2. 山东大学高效洁净机械制造教育部重点实验室机械工程国家级实验教学示范中心，济南 250061

Author(s):: LIU Zihao1; 2; SUN Chunsheng1; 2; CAI Chenxu1; 2; ZHANG Qinhe1; 2; 1.School of Mechanical Engineering, Shandong University, Jinan 250061, China；2.Key Laboratory of Efficient and Clean Machinery Manufacturing of Ministry of Education,National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University, Jinan 250061

Keywords:: Booe cutting; Ultrasonic bone scalpel; Integral design; Finite element; Harmonic response

摘要:: 切削效率低，准确率差是影响临床骨科手术的重要问题之一。传统手术刀在骨切割方面存在一定缺陷，易造成周围机体损伤。本研究提出了超声骨刀的整体设计优化方法，基于超声骨刀工作原理，结合超声换能器、超声变幅杆的设计方法，对超声骨刀进行了整体结构的设计和优化，运用有限元软件进行了模态分析和谐响应分析，并通过实验验证了设计方法的合理性。最终超声骨刀的工作频率为40 619 Hz，振幅约为110 μm，基本满足临床需要，为超声骨刀的后续设计优化提供了理论支持。

Abstract:: In clinical orthopaedic surgery, low cutting efficiency and low accuracy are important issues affecting plastic surgery. Traditional scalpels have certain defects in bone cutting, which easily cause damage to the surrounding body. We proposed the overall design optimization method of ultrasound bone scalpel. Based on the working principle of ultrasound bone scalpel, combined with the design method of ultrasonic transducer and ultrasonic horn, the overall structure design and optimization of ultrasound bone scalpel was carried out.The modal analysis and harmonic response of the ultrasound bone scalpel was carried out by finite element software, and the rationality of the design method was verified by experiments. The operating frequency of the final ultrasound bone scalpel was 40 619 Hz, and the amplitude was about 110 um, which basically met the clinical needs.It provides theoretical support for the optimization and development of the follow-up ultrasound bone scalpel.