The Trocar device family consists of: a trocar cannula, inserter, closure valves and a universal infusion line. The trocar cannula is a stainless steel tube. The inserter is either dull (2 step system) or piercing (1 step system) and is used to properly insert the trocar cannula into the eye.The closure valves are silicone devices that seal the trocar cannula when instruments are removed. The universal infusion line is a silicone tube with a plastic luer fitting on one end and an infusion cannula on the other end.