Provide two loops of interlaced staples. After the stitching is formed, the internal ring blade of the instrument can remove the excess tissue and form a circular anastomosis. Used for selective resection of dentate online mucosa. 1.The thickness can be adjusted according to the actual condition of prolapse. 2. Minimum suture clearance is provided to avoid excessive pressure injury. 3.Reasonable staple density to reduce postoperative bleeding. 4. The large volume of the staple bin can accommodate more organizations.