Spinal Fixation System
AssigneeMayo Foundation for Medical Education and Research
InventorsBrett Freedman, April V. Krivoniak, Kendall D. Dennis
Life of this patent
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Abstract
A spinal fixation system includes an expandable disc replacement body and an adjustment mechanism. The expandable disc replacement body includes a first wall, a second wall, a hinge connecting the first wall and the second wall, and a first bone-screw receiving section at a proximal end of the first wall. The adjustment mechanism is positioned between the first wall and the second wall, and an angle between the first wall and the second wall can be varied by movement of the adjustment mechanism.
Claims77
A spinal fixation system comprising:
- an expandable disc replacement body including a first wall, a second wall, a hinge connecting the first wall and the second wall, and a first bone-screw receiving section at a proximal end of the first wall;
- and
- an adjustment mechanism positioned between the first wall and the second wall, wherein an angle between the first wall and the second wall can be continuously varied between a lower value of the angle and an upper value of the angle by movement of the adjustment mechanism.
A spinal fixation system comprising:
- a disc replacement body including a first wall and a second wall;
- a plate including a pair of opposed flanges and a first bone-screw receiving section at a superior end of the plate,
- wherein the opposed flanges are dimensioned to limit rotational movement of the disc replacement body when the plate is coupled to the disc replacement body.
A spinal fixation system comprising:
- a disc replacement body portion including a first wall and a second wall;
- and
- an plate portion including a first bone-screw receiving section at a superior end of the plate portion, and a second bone-screw receiving section at an inferior end of the plate portion,
- wherein the disc replacement body portion and the plate portion are a unitary component and are comprised of a material continuously forming the disc replacement body portion and the plate portion.
A spinal fixation system comprising:
- a disc replacement body including a first wall, a second wall, a joint connecting the first wall and the second wall;
- and
- an adjustment mechanism positioned between the first wall and the second wall, wherein an angle between the first wall and the second wall can be varied by movement of the adjustment mechanism.
A kit for spinal surgery, the kit comprising:
- a plurality of disc replacement trial components, each of the disc replacement trial components comprising a body including a first wall and a second wall, and a plate section including a first bone-screw drill guide section at a superior end of the plate section, and a second bone-screw drill guide section at an inferior end of the plate section,
- wherein a first body of a first disc replacement trial component of the plurality of disc replacement trial components and a second body of a second disc replacement trial component of the plurality of disc replacement trial components have different exterior dimensions.
Dependencies are inferred from the claim text.