Bilateral clamping spacer
A spinal implant for stabilizing two adjacent vertebrae having a damaged disc therebetween is assembled in situ. The implant consists of a bone tray, an anchor, a retainer plate, a retainer, and mounting screws. The bone tray bone tray is elliptical shaped and includes an open top side and an open bottom side, the top side and the bottom side adapted to engage the end plates of adjacent vertebrae, respectively, the bone tray having a sidewall connecting the top side and the bottom side, the sidewall having an bore therethrough. The retainer is slidably extending through the bore whereby the distractor anchor is adapted to be inserted between adjacent vertebrae and the retainer extends through the retainer plate. The retainer plate is secured to the vertebrae body by mounting screws. A driver, not shown, is adapted to rotate the retainer which engages the distractor anchor to engage the bone tray.
1. A spinal implant for fusing adjacent vertebrae comprising:
a bone tray having an open top side and an open bottom side adapted to engage adjacent vertebrae, a first sidewall connecting said top side and said bottom side separated from a second sidewall connecting said top side and said bottom side, said first and second sidewall having an equal thickness, said bone tray including at least one aperture extending from said top side to said bottom side for receipt of bone growth material;
a distractor anchor having two sloped insertion walls with an aperture formed on said distractor anchor where said sloped insertion walls meet and an anchor member formed along an opposite portion of said distractor anchor, said distractor anchor having opposing end walls forming a width;
a retainer member operatively associated with said proximal end, said retainer member having a centrally disposed retainer member aperture and an engagement surface, said retainer member including a first wing mounted perpendicular to a second wing, each said wing having an aperture for receipt of a mounting screw; and
a retainer screw insertable through said centrally disposed retainer aperture for coupling to said distractor anchor.
2. The spinal implant according to claim 1 wherein said anchor member is pivotally connected to the distractor anchor.
3. The spinal implant according to claim 1 wherein said distractor anchor sloped insertion walls are formed integral to said anchor member.
4. The spinal implant according to claim 1 wherein said distractor anchor is used as a retainer.
5. The spinal implant according to claim 1 wherein said distractor anchor comprises at least one barb extending outward from each end wall.
6. The spinal implant according to claim 1 wherein said distractor anchor end walls include teeth.