Double-nylon purse-string suture in closing postoperative wounds following endoscopic resection of large (≥ 3 cm) gastric submucosal tumors

Figure 1 Process of using a double-nylon purse-string suture. A: Wound; B: Titanium clips fixed around the wound in an annular shape at equal distances; C: Nylon-string outer casing pushed forward, tightening the nylon rope to close the wound; D: Second nylon cord delivered into the stomach cavity; E: Second nylon rope placed to wrap around the wound closure and all titanium clips; F: Nylon rope trap pushed down to tighten the nylon rope.