Surgery – Instruments – Orthopedic instrumentation
Reexamination Certificate
2011-08-23
2011-08-23
Woodall, Nicholas (Department: 3775)
Surgery
Instruments
Orthopedic instrumentation
Reexamination Certificate
active
08002798
ABSTRACT:
A posterior spinal fusion system may include a plurality of cannulas that mate with cages polyaxially coupled to pedicle screws. The cannulas maintain access to the pedicle screws to facilitate percutaneous insertion of a fusion rod into engagement with the cages. Each cannula has a pair of blades that may be held together by an abutment member that at least partially encircles the blades. Each abutment member abuts the skin to define a variable subcutaneous length of the corresponding cannula. Each abutment members is also lockably removable from the corresponding blades to enable the blades to pivot with respect to the connecting element to a position in which they can be withdrawn from the connecting element. The blades of each cannula are spaced apart to provide first and second slots of each cannula, through which the fusion rod can be percutaneously inserted.
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Butters Joshua A.
Chin Kingsley Richard
Fallin T. Wade
Justin Daniel F.
Lerner David Littenberg Krumholz & Mentlik LLP
Stryker Spine
Woodall Nicholas
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