Reinforced porous spinal implants
First Claim
1. A spinal implant for engagement between vertebrae, comprising:
- a body having two opposite faces and an outer surface disposed between said two faces, said body including a porous, biocompatible material for permitting tissue ingrowth therethrough, said body being sized and configured for engagement between two vertebrae; and
a sleeve disposed around said outer surface of said body, said sleeve including a second material relatively stronger under compressive loads than said porous, biocompatible material, wherein said sleeve has a height less than a height of said outer surface to permit contact of said opposite faces with endplates of the corresponding vertebrae when the implant is implanted between the vertebrae.
2 Assignments
0 Petitions
Accused Products
Abstract
One embodiment of a spinal implant 10 includes a body 11 sized and configured for engagement between adjacent vertebrae V. The body 11 includes two opposite faces 12, 14 and an outer surface 13 between the two faces 12, 14. The body 11 includes a porous biocompatible material for permitting tissue ingrowth therethrough. A sleeve 15 is disposed around the outer surface 13 of the body 11. The sleeve 15 is composed of a second material which is relatively stronger under compressive loads than the biocompatible material of the body 11. Also provided is a plurality of apertures 16 through the sleeve 15 in communication with the outer surface 13 of the body 11 for bone ingrowth. Means for attaching the sleeve to the endplates of adjoining vertebral bodies are also provided.
868 Citations
26 Claims
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1. A spinal implant for engagement between vertebrae, comprising:
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a body having two opposite faces and an outer surface disposed between said two faces, said body including a porous, biocompatible material for permitting tissue ingrowth therethrough, said body being sized and configured for engagement between two vertebrae; and a sleeve disposed around said outer surface of said body, said sleeve including a second material relatively stronger under compressive loads than said porous, biocompatible material, wherein said sleeve has a height less than a height of said outer surface to permit contact of said opposite faces with endplates of the corresponding vertebrae when the implant is implanted between the vertebrae. - View Dependent Claims (2, 3, 4)
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5. An interbody fusion device, comprising:
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a body having an outer surface and a height approximating the height of a human disc space, said body including a porous, biocompatible, biodegradable material for permitting tissue ingrowth therethrough; and a sleeve engaged to said outer surface of said body, said sleeve including a material relatively stronger under compressive loads than said biocompatible material. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification