Intervertebral spinal implant

An intervertebral implant for implantation in an intervertebral space between vertebrae, the implant comprising:

• a body having a front end, a rear end and opposed side walls extending between the ends, the body having an outer perimeter and an inner perimeter about a single internal chamber free of any implant structure, the body comprising:
• an upper surface and a lower surface, the upper surface defined by a solid upper outer rim and a spaced apart solid upper inner rim and the lower surface defined by a solid lower outer rim and a spaced apart solid lower inner rim;
• a solid front wall extending at the front end between at least the solid upper outer rim and the solid lower outer rim;
• a solid rear wall extending at the rear end between at least the solid upper outer rim and the solid lower outer rim, the opposed side walls and the front and rear walls defining the single internal chamber;
• each of the side walls including at least one solid strut extending between the solid inner and solid outer rims of at least one of the upper surface and the inner surface, and at least one solid strut extending between one of the upper rims and one of the lower rims;
• and
• a porous structure integrally formed with the solid upper rims, the solid lower rims and the solid struts in each of the side walls, the porous structure extending from the body outer perimeter to the body inner perimeter,
• wherein the porous structure encapsulates each solid strut, and
• wherein the at least one solid strut extending between one of the upper rims and one of the lower rims extends from the inner rim of one of the upper or lower surface to the outer rim of the other of the upper or lower surface.

A method of forming an intervertebral implant for implantation in an intervertebral space between vertebrae, the method comprising:

• forming an upper surface defined by a solid upper outer rim and a spaced apart solid upper inner rim;
• forming a lower surface defined by a solid lower outer rim and a spaced apart solid lower inner rim;
• forming a solid front wall extending at a front end between at least the solid upper outer rim and the solid lower outer rim;
• forming a solid rear wall extending at a rear end between at least the solid upper outer rim and the solid lower outer rim;
• forming side walls extending between the front and rear ends with each of the side walls including at least one solid strut extending between the solid inner and solid outer rims of at least one of the upper surface and the inner surface and at least one solid strut extending from the inner rim of the solid upper or lower rims to the outer rim of the other of the solid upper or lower rims, the least one solid strut extending from the inner rim to the outer rim contacting one of upper rims and one of the lower rims, the upper and lower surfaces, the solid front and rear walls and the side walls defining a single internal chamber free of any implant structure;
• and
• forming a porous structure integral with the solid upper rims, the solid lower rims and the solid struts in each of the side walls, the porous structure extending from an outer perimeter of the implant to an inner perimeter extending about the internal chamber of the implant,
• wherein the porous structure encapsulates each solid strut.