Expandable intervertebral implant cage
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United States of America Patent
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-
Aug 22, 2006
Grant Date -
Aug 19, 2004
app pub date -
Oct 14, 2003
filing date -
Feb 14, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An expandable intervertebral implant having an external member and an internal member. The implant includes a locking arrangement having a first interlocking teeth structure formed on the external member and a second interlocking teeth structure formed on the internal member. The interlocking teeth structures of the external and internal members have engagement surfaces arranged in a non-perpendicular orientation relative to the direction of implant expansion. The locking arrangement is configured such that walls of the internal member are pulled or flexed toward the walls of the external member when compressive forces are applied to the implant.
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