Use of water jet instruments in gastrointestinal endoscopy

Figure 1 Endoscopic view of the esophagus shows that water jet flow washes away the bubbles caused by saliva or mucous in the esophagus.

Figure 2 A water jet is useful to keep endoscopic view clear. Hemostatic procedure is one of the important techniques during endoscopic treatment like endoscopic mucosal resection or endoscopic submucosal dissection. So water jet systems are widely used to find the bleeding point and to make a view clean.

Figure 3 Preserved vessels using by pulsed water jet, which could be treated with pin-point ablation by hemostatic equipment would contribute to reliable hemostasis. Black arrows show small vessels preserved by the laser induced pulsed water jet. A blue arrow shows a nozzle of pulsed jet system.