fig5

Figure 5. Pocket creation method technique using IT knife nano. (A) An injected submucosal layer is recognized by attaching hood devices. The insulated tip is put at the center of the submucosal layer (yellow arrow). (B, C) A little electric current makes a small indentation. (D-F) After hooking the blade to the edge of the indentation, the IT knife nano can move to the right side slowly (blue arrows) and resect the submucosal layer safely.