Orthopaedic screw variable angle connection to a longitudinal support
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United States of America Patent
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-
Jul 23, 2002
Grant Date -
N/A
app pub date -
Jun 7, 2001
filing date -
Sep 15, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The bone screw according to the invention for connection at a variable angle with a support bar for osteosynthesis, in particular a pedicle screw for implants for correcting and stabilizing a spinal column, has a threaded shaft (2) for screwing into a vertebra (3) and with a screw head (4) for fixing to a support bar (13), the screw head (4) being formed as a partial sphere with a frustoconically tapered peg (6) having a threaded bore (5), the tapered peg (6) with its threaded bore (5) extending at an acute angle to a longitudinal axis of the threaded shaft (2). The tapered peg (6) is securable by means of a screw (10) engaging in the threaded bore (5) to a clamping sleeve (11) forming a seat (12) for the support bar (13).
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