Design of phacoemulsification handpiece and ANSYS finite element optimization analysis
10.3760/cma.j.issn.1673-4181.2013.02.010
- VernacularTitle:白内障超声乳化手柄的设计及ANSYS有限元优化分析
- Author:
Yuan XIAO
;
Yanqun WANG
;
Xuedong SONG
;
Jun YANG
- Publication Type:Journal Article
- Keywords:
Phacoemulsification handpiece;
Piezoelectric transducer;
Ultrasonic horn;
Finite element analysis
- From:
International Journal of Biomedical Engineering
2013;(2):103-107,115
- CountryChina
- Language:Chinese
-
Abstract:
Objective To design phacoemulsification handpiece with small size and high amplitude amplification coefficient.Methods By introducing the electro-mechanical vibration characteristics of piezoelectric transducer and ultrasonic horn,and adopting the equivalent circuit method and analytical method,respectively,the size of the ultrasonic horn,quarter wavelength piezoelectric transducer and ultrasonic horn were designed.Then,modal and harmonic analysis in finite element analysis software ANSYS11.0 were used to simulate the handpiece,and to optimize the size of the handpiece after adding on needle.Results The results indicated that the longitudinal vibration frequency and amplification coefficient were very close to theoretical design.The errors were 1.4％ and 5.8％,respectively.When piezoelectric ceramics were loaded with 300 V sinusoidal voltage,the displacement amplitude at the end of the needle reached 125.5 μm,which could meet the phacoemulsification surgery needs.Conclusion This design greatly reduced the size of the handpiece,and obtained high amplitude amplification coefficient.The simulation results sufficiently validated the theoretical design.
