Coaxial blunt dilator and endoscopic cannula insertion system

摘要: A coaxial blunt dilator insertion system for of laparoscopic cannulas which uses a needle guide and instead sharp trocar to insert primary secondary cannulas. single allows the path be expanded from diameter size capable accepting digital cannula. Alternative embodiments allow multiple dilators used in sequence expand opening body cavity larger sized The can thus accommodate both narrow devices such as suture graspers optical up including objects large surgeons finger. Open laparoscopy first cannula may performed under improved visual guidance utilizing Laparoscopic Optically Directed Insertion System ("LODIS"). sleeve appropriate length is fitted over micro laparoscope bluntly opens peritoneum. backloaded with Alternatively, visually control sharpened double action grasper enter peritoneal cavity. When using closed technique, verification correct position outer prior creating pneumoperitoneum, enhancing safety.