The 4th generation of the single use endoscopic linear cutter stapler has the following advantages: (1) Curved reload surface Providing lateral dispersion of tissue to facilitate compressing   (2) Three Different staple heights from inner to outer Excellent hemostatic effect., provide excellent blood supply for tissue healing. More adaptation to different tissue. (3) Reinforced fixed anvil design. 400HV hardness, ensure consistent B-shaped formation.