Fig. 4From: Comparison of purse-string suture versus over-the-scope clip for gastric endoscopic full-thickness closure: traction and leak pressure testing in ex vivo porcine modelAir leak test. The sealed stomach was inserted into a container filled with water using multiple surgical forceps. The stomach was slowly inflated using the air pump. Finally, the pressure gauge reading was recorded as the leak pressure when air bubbles appeared at the closure siteBack to article page