Innovative technique of needlescopic grasper-assisted single-incision laparoscopic common bile duct exploration: A comparative study

Figure 1 External view of needlescopic grasper-assisted single-incision laparoscopic common bile duct exploration. The needlescopic grasper (black arrow) was used for traction through a direct puncture on the right abdomen along the right anterior axillary line. The snake liver retractor (white arrow) was used for cephalad traction of the liver to obtain better visualization.