A puncture assembly is disclosed, which includes a sheath and an insertion portion. The sheath includes a main body to guide a sling, and a puncture portion disposed at a distal end of the main body, the puncture portion including a position-control portion at the distal end of the main body and a dissecting portion, wherein the puncture portion is configured to rotate in an extended curved line of the main body together with the main body to create a through hole from an outside a living body through obturator foramens of the living body. The insertion portion is configured to be inserted into a hollow lumen of the sheath and has an arcuate shape corresponding to a shape of the sheath.
