超声外科手术装置检定系统中超声刀头振幅测量方法的研究

Study on measuring method for amplitude of transducer’s tip in ultrasonic surgical apparatus

目的:研究超声外科手术装置检定系统中超声刀头振幅测量方法,设计一套实用的测量系统和数据处理算法。方法:测量系统采用体视显微镜加CCD摄像方法,并对摄取的图像进行捕捉取样,通过图像分割处理,最后计算出超声刀头的振幅。结果:本方法的测量范围为190μm,精度<10μm,测量结果可重复性较好。结论:该测量方法具有科学、直接,简单、易行,误差可估计和控制,设备价格低廉,结果可信、可靠以及重复性好等优点,经试用,效果良好,填补了国内该项目的空白。

To study the measuring method for amplitude of transdueer＇s tip in ultrasonic surgical apparatus, and design a set of practical detecting system with special data processing technique, Methode The system was consisted of stereomlcroscope, CCD camera, etc. The images of amplitude measuring were captured and processed and the result was carried out at last. Results The measurement range for amplitude of transducer＇s tip was above 190 μ m, the precision was below 10 μm, and the repeatability was also ideal. Concluaion The amplitude measuring method has some excellent characters such as directness, simplicity, easy implementation, error estimableness and controllability, etc. It is proved in practice that the effect is nice and the blank in this field in China is filled.