基于超声引导的微细Z-pin植入系统
费少华,丁会明,汪海晋,李江雄

Ultrasound-guided fine Z-pin insertion system
Shao-hua FEI,Hui-ming DING,Hai-jin WANG,Jiang-xiong LI
图 7 超声振子的结构简图及关键尺寸
Fig.7 Schematic diagram and key dimensions of ultrasonic vibrator