Drainage catheter

A drain is a medical device used to drain fluid or air from a body cavity or organ. It is typically used when there is excessive accumulation of fluid or when fluid needs to be drained for diagnosis or treatment.

Drainage catheters are usually flexible tubes made of silicone or polyurethane material. It is inserted into the body through a small incision or natural body opening and directed to the area where fluid needs to be drained. The catheter may have a side hole or balloon at the tip to facilitate drainage. It is usually connected to a collection bag, vacuum system, or other liquid removal device. The catheter can be left in place temporarily or tunneled under the skin for long-term drainage.