Evaluation of the ability of such system to inject a viscous macromolecular solution of glycerol (glycerol mix: Glycerol 10 %, Fructose 5 %, saline solution 0.9%)(27. Fujishiro M, Yahagi N, Kashimura K, et al. Comparison of various submucosal injection solutions for maintaining mucosal elevation during endoscopic mucosal resection. Endoscopy. 2004;36:579-583.)