Patent ID: 7014658
Filing Date: 2006-03-21
Classification: A61F,Y10S

Abstract:
1. An intervertebral spacer device, comprising: first and second plate members, each having plate surfaces thereof, said plate members being disposed in a spaced apart relationship such that inner ones of said plate surfaces oppose one another, and external ones of said plate surfaces face in opposite directions; and at least one multi-pronged domed spring restoring force providing element disposed between the inner plate surfaces of said first and second plate members, and disposed such that a compressive load applied to the external plate surfaces of said plate members is counteracted by said at least one multi-pronged domed spring restoring force providing element, wherein said at least one multi-pronged domed spring restoring force providing element further comprises a central opening which includes a curvate volume for receiving and holding therein a ball-shaped head.