In laparoscopic surgery, surgeons can use only rod-shaped instruments that can be inserted through a trocar and therefore high technique is required.
Small grippers of forceps are inadequate to grasp, manipulate or push aside large internal organs.
So we propose mechanical hands with detachable fingers that can be assembled
in the abdominal cavity, and develop two types of detachable-fingered Hands.
Experimental results verify that both hands can grasp large and oily objects like internal organs.
