“纯”纵向振动的圆形刀头的超声刀的研制

南京大学学报(自然科学版) ›› 2012, Vol. 48 ›› Issue (5): 553–558.

“纯”纵向振动的圆形刀头的超声刀的研制

周红生^1,2，许小芳¹，程茜³，钱梦騄³

出版日期:2015-07-01 发布日期:2015-07-01
作者简介: (1.长春理工大学机电工程学院，长春,130022;2.中国科学院声学研究所东海研究站，上海，200032
3.同济大学声学所，上海，200092)
基金资助:
National Natural Science Foundation of China(11274342)

A design and study of ultrasonic scalpel of spherical tip
in "pure" longitudinal vibration mode*

Zhou Hong Sheng^1’2，Xu Xiao一Fang¹，Cheng Qian³，Qian Meng一Lu ^3**

Online:2015-07-01 Published:2015-07-01
About author: (1 .College of Mechanical and Electric Engineering of CUST，Changchun, 130022，China;
2. Shanghai Acoustics Laboratory, Chinese Academy of Sciences，Shanghai，200032，China
3. Institute of Acoustics, Tongji University, Shanghai，200092,China)

摘要/Abstract

摘要： 以弹性波声导理论为基础，设计频率范围为50-60 kHz的低频高能量“纯”纵向振动的球形刀头的超声手术刀.采用有限元方法优化刀头曲率半径R，对其进行模态分析和谐振分析，获取刀头输出位移、刀身应力分布等参数，使所设计的超声刀在50-60 kHz频段内的振动模式为“纯”纵向振动，刀头纵向输出位移最大，刀身应力最小.为验证有限元分析结果，试制超声刀模型，进行超声刀振动模态和位移的实验测量.结果表明:通过优化超声刀刀头的曲率半径，可以实现超声刀“纯”纵向振动，且实验数据与仿真结果相一致，达到预期效果.

Abstract: An ultrasonic scalpel with spherical tip, which operates in the high power low-frequency range 50一60 kHz for biological tissue cutting and removal，is designed based on the theory of elastic wave guide. In order to make the scalpel operated in "pure" longitudinal vibration mode and have the largest output displacement of the tip as well as the least stress distribution in the scalpel body, the design is optimized with finite clement method CFEM). According to the optimized design, the ultrasonic scalpel with spherical tip is produced and its output displacement of the spherical tip is measured with optical method.The experimental results are compared with FEM results, It shows that both are in agreement.

周红生^1,2，许小芳¹，程茜³，钱梦騄³. “纯”纵向振动的圆形刀头的超声刀的研制[J]. 南京大学学报(自然科学版), 2012, 48(5): 553–558.

Zhou Hong Sheng^1’2，Xu Xiao一Fang¹，Cheng Qian³，Qian Meng一Lu ^3**
. A design and study of ultrasonic scalpel of spherical tip
in "pure" longitudinal vibration mode*
[J]. Journal of Nanjing University(Natural Sciences), 2012, 48(5): 553–558.

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