Surgery – Instruments – Orthopedic instrumentation
Reexamination Certificate
2004-03-05
2011-10-25
Barrett, Thomas C. (Department: 3775)
Surgery
Instruments
Orthopedic instrumentation
Reexamination Certificate
active
08043294
ABSTRACT:
A femoral caliper having one or more anatomical referencing members for placement against portions of the femur, such as the anterior cortex and posterior portion of the femoral condyles, to measure the femur for sizing of the femoral component. A reference mark positioning guide of the femoral caliper is connected to the anatomical referencing member and is capable of guiding placement of a reference mark on the femur that facilitates positioning of the femoral component. The femoral caliper includes an adjustment mechanism capable of displacing the reference mark positioning guide relative to the anatomical referencing member. This allows adjustment of the position of the reference mark (and hence the femoral component) on the femur to account for the up or down sizing of the femoral component. Preferably, the adjustment mechanism adjusts the reference mark positioning guide in the anterior-posterior direction to allow balancing of the tightness or laxity of the selected component.
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Blaha J. David
Fencl Robert M.
Hartdegen Vernon R.
Maloney William J.
White Stephen E.
Barrett Thomas C.
Beccia Christopher
Womble Carlyle Sandridge & Rice PLLC
Wright Medical Technology Inc.
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