Implant fusion device and method of manufacturing
AssigneeSpectrum Spine IP Holdings, LLC
InventorJames C. Robinson
Life of this patent
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Abstract
The present invention relates to an implant fusion device and a method of manufacturing an implant fusion device. More particularly an orthopedic or spinal implant configured to be implanted between adjacent vertebrae or within a gap in a bone or between bones, the device having a manufactured body structure simulating the physical characteristics of trabecular bone, but with improved osteoinductive features on the exterior surface wherein the device is fabricated using 3D printing. Alternatively, the implant may be made through 3D printing in a manner that results in a relatively or completely solid structure, but with a surface that mimics trabecular bone structure.
Claims26
A method of making a spinal implant device or orthopedic device or bone implant device, the method comprising:
- producing a structure through a three-dimensional (3D) printing additive process so that at an exterior portion of the structure comprises a plurality of interconnected struts that are curved or arched and spaced between open connections forming a porous wall having a porosity of between 75%-95%, wherein the structure is then further processed, after the 3D printing additive process is complete, with a laser etching technology that results in a nanotechnology structure comprising a plurality of nano channels arranged in a network on at least a first and second exterior surface of the interconnected struts that facilitates bone attachment and growth, wherein the laser etching is independent of topography of the exterior surface and wherein the plurality of nano channels have variable depth.
A method of making a spinal implant device or orthopedic device or bone implant device comprises the steps of:
- fabricating an implant body structure using three-dimensional (3D) printing to create the implant body structure;
- additively building the body structure having a superior load bearing surface and an inferior load bearing surface and a wall structure, wherein an outer surface or surfaces of the body structure comprises a plurality of interconnected struts that are curved or arched and spaced between open connections forming a porous portion having a porosity of between 75%-95%;
- and
- laser etching nano channels on at least a portion of interconnected struts of at least a first and second outer surface of the implant body structure after the 3D printing is completed, wherein the laser etching is independent of topography of the first and second outer surface and wherein the nano channels have variable depth;
- wherein the body structure has at least a portion having the plurality of interconnected struts forming porous walls with openings extending inwardly from an exterior surface to a depth of 1.0 mm or greater forming the porous portion with a void volume to solid mass volume mimicking trabecular bone.
A method of making a spinal implant device or orthopedic device or bone implant device comprises the steps of:
- fabricating an implant body structure using three-dimensional (3D) printing to create the implant body structure;
- additively building the body structure having a superior load bearing surface and an inferior load bearing surface and a wall structure;
- wherein the body structure has at least a portion having a plurality of walls with openings extending inwardly from an exterior surface to a depth of 1.0 mm or greater forming a porous portion with a void volume to solid mass volume mimicking trabecular bone so that the exterior surface comprises a plurality of interconnected struts that are curved or arched and spaced between open connections forming the porous portion and having a porosity of between 75%-95%;
- and
- after the 3D printing, laser etching nano channels on at least a first and second exterior surface of the interconnected struts on at least a portion of the exterior surface or surfaces of the implant body structure, the nano channels creating new bone growth attachment features to enhance osteoinductivity of the device, wherein the laser etching is independent of topography of the exterior surface and wherein the nano channels have variable depth.
Dependencies are inferred from the claim text.