Bone implant with osteo-inducing structure

Details Bone implant with osteo-inducing structure Bone implant with osteo-inducing structure

2003-07-31

2011-10-25

Ramana, Anu (Department: 3775)

Prosthesis (i.e., artificial body members), parts thereof, or ai

Implantable prosthesis

Bone

Reexamination Certificate

active

08043380

ABSTRACT:
A spine implant system having two or more adjacent segments that have a male-female annular interlocking relationship for increased mechanical stability and resistance to relative translation and rotation. One or more segments is provided with at least one perforation channel or void to promote osteo-induction within the segment. Optionally, two adjacent segments have at least one common or aligned perforation channel or void. Two or more spaced apart portions of a segment surface are optionally chamfered to provide easier fabrication and/or positioning of the segment. Two spaced apart exposed surface planes of an interlocked segment pair optionally are axially oriented at a small positive angle relative to each other, to approximate natural spine curvature. Segments in some embodiments have a curvilinear delta cross sectional shape and/or have crosshatched grooves in exposed surfaces. Many of the embodiments are useful in transforaminal lumbar interbody fusion (TLIF).

REFERENCES:
patent: 6716247 (2004-04-01), Michelson
patent: 7037339 (2006-05-01), Houfburg

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