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US 2010/0063554 A1Published application
Interbody fusion grafts and instrumentation
AssigneeWarsaw Orthopedic, Inc.
InventorsCharles L. Branch, Mingyan Liu, Lawrence M. Boyd, Loic Josse
Life of this patent
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Abstract
This invention relates to implants formed from donor bone for use in lumbar interbody fusion procedures and instruments for performing such procedures. The implants are formed to include a concave surface formed from a portion of the medullary canal of a long bone. The concave surface defines a recess in the implant that serves as a depot for osteogenic material. Specific instruments for inserting the implants prepared according to this invention and for preparing the intervertebral space to receive the implants are also provided.
Claims22
-62. (canceled)
A spinal implant, comprising:
- an elongate bone portion formed from a cross-sectional bone slice taken from a diaphysis of a long bone having an outer cortical bone wall surrounding an inner medullary canal, said elongate bone portion having a longitudinal axis and including:
- a first end portion;
- a second end portion arranged generally opposite said first end portion;
- a first bone engaging surface;
- a second bone engaging surface arranged generally opposite said first bone engaging surface and defining an implant height therebetween;
- a first sidewall extending between said first and second bone engaging surfaces and including a recessed area disposed between said first and second end portions, said recessed area defined by a partial portion of the medullary canal of the long bone and defining a concave outer surface extending along said longitudinal axis between said first and second end portions from said first bone engaging surface to said second bone engaging surface;
- and
- a second sidewall arranged generally opposite said first sidewall relative to said longitudinal axis, said second sidewall extending between said first and second bone engaging surfaces and including a substantially planar outer surface extending along said longitudinal axis between said first and second end portions and substantially entirely along said implant height from said first bone engaging surface to said second bone engaging surface;
- and
- wherein said concave outer surface defined by said first sidewall is positioned opposite said substantially planar outer surface of said second sidewall relative to said longitudinal axis.
7 more elements
Dependencies are inferred from the claim text.