Percutaneous access devices and bone anchor assemblies
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United States of America Patent
Stats
-
Feb 20, 2007
Grant Date -
Jun 16, 2005
app pub date -
Dec 16, 2003
filing date -
Dec 16, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A percutaneous access device includes an inner tube and an outer tube disposed about at least a portion of the inner tube. The outer tube may be sized to span from a skin incision in a patient to a site proximate the spine of the patient. The distal end of the outer tube may be adapted to releasably engage a bone anchor. The inner tube may be adjustable relative to the outer tube between a first position and a second position in which the distal end of the inner tube contacts the bone anchor. A bone anchor assembly includes a bone anchor having a distal bone engaging portion and a receiving member having a recess for receiving a spinal fixation element. The proximal end of the receiving member may have an arcuate groove formed on an exterior surface thereof to facilitate connection of an instrument to the receiving member.
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