Articulating spinal implant
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United States of America Patent
Stats
-
Aug 27, 2002
Issued Date -
N/A
app pub date -
Sep 2, 1999
filing date -
Apr 23, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A spinal implant for intervertebral disc replacement. The implant is formed from two hemicylindrical elements, each engaging one of an adjacent pair of vertebrae. An articulating ball-and-socket joint and/or rocker and channel between the two elements resists compression and lateral movement between the vertebra, but allows pivotal movement, thereby preserving mobility. Fusion chambers are provided for allowing bone ingrowth to fuse the elements to the vertebrae. Biocompatible, bioreabsorbable struts, shims, fillers and/or end caps are provided for temporary stabilization of the first and second hemicylindrical elements. Bone chips removed from the vertebrae during implantation or bone growth stimulators can be inserted into the fusion chamber or otherwise applied to the implant to enhance bone ingrowth.
First Claim
Family
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