Interbody spinal fusion device
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United States of America Patent
Stats
-
Feb 15, 2011
Grant Date -
Nov 29, 2007
app pub date -
Dec 19, 2006
filing date -
Apr 4, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pair of flat support plates in a spinal fusion implant device contact and rest against the softer, central cancellous bone portion of respective endplates of adjacent vertebrae. Each support plate has a front template that is orthogonal to the plate and is bent to communicate with the anterior surface of the hard cortical endplate the vertebrae. A wedge-shaped support strut in a central channel between the two plates is configured to vary the distance between the support plates such that the height of the device proximate the anterior end is greater than the height of the device at the posterior end to maintain the natural lordosis of the spine. Channels formed on either side of the support strut are filled with bone graft material and contact the endplates of the vertebrae through large openings in the flat support plates to facilitate fusion.
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Family
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