Spinous Laminar Clamp Assembly
OwnerMark S. Sterninventor
Life of this patent
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Abstract
A spinous laminar clamp system is disclosed herein. The preferred embodiments are either a three or a four-point fixation system at a particular vertebral level. For example, a two-point adjustable fixation below a vertebrae and a single-point non-adjustable point above the vertebrae exemplifies the three-point fixation. Multiple level and further stabilizing is provided by fixation to subjacent vertebrae above and/or below with a connecting rod providing unitization between levels. Specific designs are applicable to the cervical spine; however, fixation at all levels and regions of the human spine are contemplated.
Claims14
A spinous laminar clamp for fixating and unitizing a human spine comprising:
- a first base portion providing structural integrity thereto;
- a first slot through a top and a bottom of the first base portion for receiving a first lower caudal hook, wherein the first lower caudal hook is slidingly adjustable vertically via the first slot;
- and
- an upper cephalad hook configured to the first base portion, the upper cephalad hook and the lower caudal hook together for tightening to a vertebral surface for fixating and unitizing the human spine.
A spinous laminar clamp comprising:
- a first base portion providing structural integrity thereto;
- a first aperture through a top and a bottom of the first base portion for slidingly receiving an upper cephalad hook;
- and
- a fixed lower jaw coupled to the first base portion opposite the cephalad hook, the cephalad hook and the lower jaw together for tightening to a vertebral surface.
A spinous laminar clamp assembly providing fixation at multiple vertebral levels comprising:
- a first base portion configured to a first hook with a first stem slidingly received by the first base portion;
- a second base portion configured to a second hook with a second stem slidingly received by the second base portion, the second base portion in a first shared horizontal plane to the first base portion;
- a first isthmus between the first and the second base portion, the first isthmus having a third hook, wherein the first hook, second hook and third hook provide a three-point fixation to a first vertebral level;
- a third and a fourth base portion configured subjacent said first and said second base portions, the third and fourth base portion in a second horizontal plane further fixated to a second vertebral level;
- and
- a connecting rod coupling the first and second base portions to the third and the fourth base portions, the first, the second, the third and the fourth base portions together with the connecting rod providing fixation at the multiple vertebral levels.
Dependencies are inferred from the claim text.