530123.fig.001a
(a)
530123.fig.001b
(b)
Figure 1: Electrosurgical endoknives used in our study. (a) The Flexknife is a flexible tool that enables endoscopists to adjust the projection length of the tip when needed and is not combined with a water-jet function. (b) The Flushknife is a short needle electrosurgical endo-knife combined with a water-jet function.