Closed connector for spinal fixation systems
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United States of America Patent
Stats
-
Jan 30, 1996
Issued Date -
N/A
app pub date -
Apr 15, 1994
filing date -
Apr 8, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A spinal fixation device for immobilizing a portion of a spine includes at least one spine rod and a plurality of bone screws that are threaded into an appropriate number of vertebrae and each of which includes a threaded end protruding from the vertebra. Clamps are used to fasten a spine rod to the bone screws. Each clamp includes a body portion with a first aperture for receiving the protruding threaded end of a bone screw. The clamp is fastened to the threaded end of the bone screw with a nut. A second aperture receives the spine rod and includes a plurality of longitudinal teeth that cooperate with a serrated spine rod to provide a secure grip between the two and to prevent rotation of the spine rod with respect to the clamp. A threaded aperture communicates with the second aperture and receives a set screw for locking the rod within the second aperture.
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