Patent ID: 8308804

Claim:
A spinal fusion device, comprising: a first endplate configured for fitting within a disc space and engaging with a first vertebra, said first endplate has an anterior end and a posterior end; and a second endplate configured for fitting within said disc space and engaging with a second vertebra, said second endplate has an anterior end and a posterior end, wherein said endplates are separated by a single spacer that maintains a pre-determined distance between said endplates, said spacer comprising: an anterior end; a posterior end; a first lateral side; a second lateral side, opposite to said first lateral side; a first surface that engages with said first endplate; a second surface that is opposite to said first surface and engages with said second endplate; and wherein at least one of said first and the second endplates is locked to said spacer by advancing said spacer between said first and said second end plates and towards the posterior ends of said endplates until a flexible tab self-locks into a locking slot by resiliently biasing into said locking slot.