Method for suturing a gastric wall

A method for cerclaging suturing a gastric wall comprising:

• inserting a flexible elongated loop-forming member perorally into a stomach and advancing the loop-forming member such that the loop-forming member protrudes from a distal end portion of an overtube and advances along a lesser curvature line of the stomach toward a pyloric antrum of the stomach, wherein the loop-forming member is inserted through the overtube and the distal end portion of the overtube is located at a predetermined position near a cardia of the stomach;
• advancing the loop-forming member to contact with the gastric wall in vicinity of the pyloric antrum of the stomach, and then advancing the loop-forming member along a greater curvature line of the stomach such that the loop-forming member returns to the predetermined position and connects to the distal end portion of the overtube to form a closed loop in the stomach;
• suctioning air from the stomach after forming the closed loop member in the stomach such that an anterior gastric wall is in proximity with a posterior gastric wall within a region encircled by the closed loop;
• and
• suturing at least a portion of the anterior gastric wall to the posterior gastric wall that are in proximity in the region encircled by the closed loop.