Thoracoport™ single use trocars are used in thoracic endoscopic procedures to establish a port of entry for instrumentation. Each Thoracoport™ 5.5 mm, 10.5 mm, 11.5 mm and 15 mm single use trocar consists of a blunt-tipped obturator and a threaded sleeve with a shroud at its proximal end to protect against foreign materials entering the chest cavity, and for instrument stabilization.