医疗卫生装备2024，Vol.45Issue(6)：17-22,6.DOI:10.19745/j.1003-8868.2024106
基于品质因数的超声刀刀头疲劳振动评价研究
Study on fatigue vibration evaluation of ultrasonic knife tip based on Q factor
王科盛 1李泽楷 2刘培 2孙京昇 2彭旭光 2李双双 2何倩鸿 1刘贞3
作者信息
- 1. 电子科技大学-水木医疗联合实验室,成都 611731
- 2. 成都水木医疗科技有限公司,成都 611731
- 3. 中国医学装备协会应用评价分会,北京 100086
- 折叠
摘要
Abstract
Objective To propose a Q factor-based fatigue vibration evaluation method of the ultrasonic knife tip.Methods Firstly,an ultrasonic cutter fatigue testing table was established to realize repeated cutting,which was composed of a power supply module,a three-axis moving module,an ultrasonic cutter clamping module and a control module.Secondly,10 ultrasonic knives of some brand underwent fatigue testing with the table,during which non-contact measurement of the ultrasonic knife tip vibration was carried out and the Q factors were calculated at the five periods of the fatigue test,including the periods before cutting,after 500 times of cutting,after 1 000 times of cutting,after 2 000 times of cutting and after 3 000 times of cutting.Finally,the average cutting speed and burst pressure for coagulated vessels were computed at each period to validata the effectiveness of the method proposed.Results It's indicated that Q factor could effectively reflect the fatigue degradation of the ultrasonic knife tip,while the average cutting speed and burst pressure for coagulated vessels were difficult to efficiently evaluate the fatigue degradation level of the ultrasonic knife tip due to the uncertainty factors in the measurement process.Conclusion The proposed Q factor-based evaluation method can directly evaluate fatigue vibration of the ultrasonic knife tip in an accurate and quantitative manner.[Chinese Medical Equipment Journal,2024,45(6):17-22]关键词
超声刀/品质因数/疲劳试验/振动疲劳/激光测振/非接触测量Key words
ultrasonic knife/Q factor/fatigue experiment/vibration fatigue/laser vibrometer/non-contact measurement分类
医药卫生引用本文复制引用
王科盛,李泽楷,刘培,孙京昇,彭旭光,李双双,何倩鸿,刘贞..基于品质因数的超声刀刀头疲劳振动评价研究[J].医疗卫生装备,2024,45(6):17-22,6.
