cannula set

A cannula set is a collection of sterile, single-use or reusable instruments designed for vascular or cavity access during minimally invasive procedures. The set typically includes a sharp trocar for initial puncture, a blunt obturator for atraumatic insertion, and a hollow cannula tube that serves as a working channel for endoscopes, irrigation, or instrument passage. Common applications include laparoscopic surgery, arthroscopy, liposuction, and intravenous catheterization. Key selection factors include cannula diameter (gauge), length, material (stainless steel or medical-grade polymer), and whether the set includes safety features such as shielded tips or valves to prevent backflow.