Apparatus for subcutaneous suprafascial pedicular internal fixation
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United States of America Patent
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Oct 29, 1996
Issued Date -
N/A
app pub date -
May 9, 1995
filing date -
Mar 17, 1992
priority date (Note) -
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status (Latency Note)
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Abstract
A system and method for internal fixation of vertbra of the spine to facilitate graft fusion is disclosed which minimizes the degee of trauma and the amount of surgical invasion. In one aspect the system includes fixation hardware which is inserted through small incisions aligned with each pedicle to be instrumented. The hardware includes bone screws, fixation plates, engagement nuts, and linking members. In an important feature of the hardware, the fixation plates, engagement nuts and linking members are supported suprafascially but subcutaneously so that the fascia and muscle tissue are not damaged, by a bone screw which includes an elongated smooth shank intermediate bone engaging threads and machine threads that is configured to support the fixation hardware above the fascia.
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