초록 ▼

The present invention discloses a spinal fusion implant that is at least partially cylindrical, made of material appropriate for human implantation and having preferably, but not necessarily, one closed end and one end capable of being closed, such that an internal chamber can be filled and hold any

The present invention discloses a spinal fusion implant that is at least partially cylindrical, made of material appropriate for human implantation and having preferably, but not necessarily, one closed end and one end capable of being closed, such that an internal chamber can be filled and hold any natural or artificial osteoconductive, osteoinductive, osteogenic, or other fusion enhancing material. The partially cylindrical implant directly participates and is incorporated in the ensuing fusion. In the preferred embodiment, the implant of the present invention relies on surface roughenings of the outer surface to enhance its stability and resist dislodgement from within the disc space between two adjacent vertebrae. The implant of the present invention incorporates at its rear end, an engagement means to facilitate insertion or extraction of the implant. The implant may be filled with, coated with, and/or composed of, fusion promoting substances. Finally, the implant of the present invention does not require rotation for its insertion and can be seated by linear advancement.

대표청구항 ▼

[ What is claimed is:] [1.] A spinal fusion implant made of a material appropriate for human implantation between two adjacent vertebrae, said implant comprising:a non-threaded cylindrical member having an exterior with opposed arcuate portions adapted to be oriented toward the adjacent endplates of

[ What is claimed is:] [1.] A spinal fusion implant made of a material appropriate for human implantation between two adjacent vertebrae, said implant comprising:a non-threaded cylindrical member having an exterior with opposed arcuate portions adapted to be oriented toward the adjacent endplates of the two adjacent vertebrae, each of said opposed arcuate portions having at least one opening passing therethrough to allow bone growth from one of the adjacent vertebrae through said implant to the other of the adjacent vertebrae, said implant having a plurality of surface roughenings protruding from said exterior of said cylindrical member for engaging the two adjacent vertebrae to maintain said implant in place, said surface roughenings configured to resist expulsion of said implant from between the two adjacent vertebrae.