Visible: the endoscope can be inserted with the puncture device, so that the whole minimally  invasive surgery can be visible, and the damage caused by blind penetration can be avoided

Safe and Reliable: the unique serrated design of the cannula can increase the friction between the cannula and  the abdominal wall and avoid the cannula falling offff during the operation. Bilateral tissue splice does not cut the tissue to minimize abdominal wall trauma. The blunt tip of the puncture cone protects the tissue from puncture injury. 

Air Tightness: excellent dynamic sealing performance, small resistance to instrument switching,  difffferent size of instrument replacement, no need for converter, convenient and effiffifficient operation. 

Detachable: the sealing assembly can be removed to facilitate the removal of large foreign body tissue. 

Rigidity: The puncture rod is made of high strength medical polymer material + medical stainless steel with good rigidity. External view: reasonable color matching, easy and comfortable shape, anti-visual fatigue.