US Patent 11553912 Surgical stapler end effector sled having multiple surface finishes

A staple driver actuator for a surgical stapler includes a base having at least one bottom surface. The bottom surface defines a plane and is configured to slide longitudinally relative to a stapling assembly of the surgical stapler. The staple driver actuator also includes at least one rail extending upwardly from the base. The at least one rail includes at least one rail cam surface, and the rail cam surface is inclined relative to the plane. The staple driver actuator further includes a first surface texture on a first portion of the staple driver actuator, and a second surface texture on a second portion of the staple driver actuator. The second surface texture is smoother than the first surface texture.