Multi-piece intervertebral implants

摘要

Intervertebral implants for implanting into an intervertebral space are provided. The implants can comprise one or more layers that are operably attached to one another. An implant can comprise a first layer having a first mating surface that mates with a second mating surface of a second layer. The first mating surface and the second mating surface can have features that allow them to complement each other. The implants can include one or more bore holes for receiving a fixation member. The bore holes can be horizontal, vertical or diagonal. In some cases, the bore holes will be blind bore holes.

主权项

1. An intervertebral implant for implantation in an intervertebral space comprising:
two or more cortical bone members assembled relative to one another, the two or more members forming a unit comprising:
an upper surface having a plurality of ridges,a lower surface having a plurality of ridges, andan opening that extends through the upper surface and the lower surface; a first bore hole that extends through the two or more cortical bone members; a second bore hole that extends through the two or more cortical bone members; a first fixation member inserted through the first bore hole, wherein the first fixation member extends across an interface between two members; and a second fixation member inserted through the second bore hole, wherein the second fixation member extends across an interface between two members, wherein the first bore hole and the second bore hole are both blind holes such that they do not extend from the upper surface to the lower surface of the implant, wherein the first bore hole and the second bore hole are configured to open on only one of either the upper surface or the lower surface of the implant, wherein the first bore hole and the second bore hole open on the same surface of the implant, wherein the first and second bore holes are diagonal to the upper or lower surface.