On the right L/ ,the same operation were performed using universe rongeur,and on the right L/,MED were performed using NBSIS,in the above levels tubular retractor were all held vertically.
On the right L/ ,the same operation were performed using universe rongeur,and on the right L/,MED were performed using NBSIS,in the above levels tubular retractor were all held vertically.
L/右侧用无“盲区”MED器械系统行MED,以上节段均垂直固定通道管;