Device-assisted traction methods in colorectal endoscopic submucosal dissection and options for difficult cases

Figure 7 A tapered hood with wide holes in its sides for efficient air bubble removal during underwater endoscopic submucosal dissection. A: An endoscopic view when a tapered tip hood with wide holes in its sides is attached; B: A tapered hood (ST Hood Short Type; Fujifilm Medical) with wide holes in its sides for air bubble removal during underwater endoscopic submucosal dissection. As the tip of an ST Hood Short Type is made of polycarbonate resin, wide holes in its sides can be made by hand using a commercially available router (RTD35ACL; TACKLIFE); C: Wide holes in the sides of the tapered hood can facilitate air bubble removal. Citation: Reprinted from Mitsuru Nagata. Tapered hood with wide holes in its sides for efficient air bubble removal during underwater endoscopic submucosal dissection. Digestive Endoscopy 2022; 34: 654. ©2022 Japan Gastroenterological Endoscopy Society. Published by John Wiley & Sons Australia, Ltd[21].