A sterile plastic tube designed to be placed onto the distal end of an endoscope (e.g., oesophagoscope) to facilitate the removal of coagulated blood/tissue during electrosurgical treatment (e.g., for the treatment of Barrett’s oesophagus). It is designed to fit tightly without fixing, with an oblique leading edge that extends beyond the end of the endoscope to provide atraumatic penetration and scooping functionality, and is available in a range of diameters to accommodate common endoscope diameters. This is a single-use device.