Spinal interbody fusion device

A spinal interbody fusion device, comprising:

• a monolithic, one-piece, unitary structure including an upper porous plate, an opposing lower porous plate, and a non-porous peripheral wall extending between and joining said upper porous plate and said opposing lower porous plate;
• said upper porous plate comprising a contact surface having an upper micro roughness for contacting an endplate of a vertebral body within an intradiscal space of a spine, said upper porous plate being formed by a 3-D printing process defining a plurality of pores extending entirely through said upper porous plate, an upper opening extending through said upper porous plate, a surface of at least a portion of said upper micro roughness comprising an augmented surface that includes a nano roughness;
• said lower porous plate comprising a contact surface having a lower micro roughness for contacting an endplate of an opposing vertebral body within the intradiscal space of the spine, said lower porous plate being formed by a 3-D printing process defining a plurality of pores extending entirely through said lower porous plate, a lower opening extending through said lower porous plate, a surface of at least a portion of said lower micro roughness comprising an augmented surface that includes a nano roughness;
• and
• said peripheral wall extending between and joining said upper porous plate and said lower porous plate, said upper porous plate, said lower porous plate, and said peripheral wall together defining a hollow interior of the unitary structure that is configured to receive bone graft, said opening through said upper porous plate, said opening through said lower porous plate, and said pores of said respective porous plates being in fluid communication with said hollow interior,
• wherein each of said openings extending through said respective upper porous plate and said lower porous plate is fully bounded and is separate and apart from said pores of said respective plate, each of said openings having a dimension larger than a dimension of any of said pores of said upper porous plate and said lower porous plate.