ANVIL AND SURGICAL INSTRUMENT

Provided are an anvil (200) and a surgical instrument. The anvil (200) is configured for forming a surgical staple (600). The anvil (200) comprises a forming face (210) and forming parts (220). The plurality of forming parts (220) are respectively formed by recessing from the forming face (210). The forming parts (220) comprise a first forming part (221) and a second forming part (222). The first forming part (221) is configured for forming a first staple leg (612). The second forming part (222) is configured for forming a second staple leg (622). When the surgical staple (600) is in a forming state, the projection of a staple crown (630) in a Z-axis direction is a first arc line (631). The projection of the first staple leg (612) in the Z-axis direction is tangent to or substantially tangent to the first arc line (631). The projection of the second staple leg (622) in the Z-axis direction is tangent to or substantially tangent to the first arc line (631). Under the action of the anvil (200), in the Z-axis di