Two instruments commonly used for setting up a drain are:
1. Drainage tube or catheter: This is a flexible tube made of silicone or rubber that is inserted into the body to allow the drainage of fluids. It is typically connected to a collection bag or container to collect the drained fluid.
2. Trocar or drainage needle: This is a sharp, pointed instrument used to create an opening or puncture in the body through which the drainage tube can be inserted. It is often used in procedures such as thoracentesis or paracentesis to drain fluid from the chest or abdominal cavity.