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US 12,685,646 B2Granted
Expandable interspinous process fixation device
AssigneeGlobus Medical, Inc.
InventorsMatthew Bechtel, Hilliary Kopp
Life of this patent
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Abstract
An expandable interspinous process fixation system capable of restoring spinal stability and facilitating fusion. In one embodiment, the expandable interspinous process fixation system includes a central ramp, a first endplate, and a second endplate, the central ramp capable of being moved in a first direction to move the first and second endplates outwardly and into an expanded configuration. Each endplate supporting fixed and/or adjustable spinous process engaging plates.
Claims13
An expandable fixation device comprising:
- a first endplate including a first upper surface and a first lower surface, the first endplate having a first lateral adjustment arm;
- a second endplate including a second upper surface and a second lower surface, the second endplate having a second lateral adjustment arm;
- a first sliding plate adjustably mounted on the first lateral adjustment arm and has an inner surface defining a third spinous process engaging surface;
- a second sliding plate adjustably mounted on the second lateral adjustment arm and has an inner surface defining a fourth spinous process engaging surface;
- wherein the first lateral adjustment arm and the second lateral adjustment arm each include a first retaining element and a second retaining element,
- wherein the first retaining element and the second retaining elements engage with the first and second sliding plates, respectively,
- a central ramp positioned between the first endplate and the second endplate;
- and
- a driving ramp positioned between the first endplate and the second endplate, wherein movement of the central ramp and the driving ramp towards one another causes the first endplate to move away from the second endplate.
6 more elements
An expandable fixation device comprising:
- a first endplate having a first lateral adjustment arm;
- a second endplate having a second lateral adjustment;
- a first sliding plate adjustably mounted on the first lateral adjustment arm and having a third spinous process engaging surface;
- a second sliding plate adjustably mounted on the second lateral adjustment arm and having a fourth spinous process engaging surface;
- an expansion assembly positioned between the first and second endplates;
- the expansion assembly configured to selectively cause the first and second endplates to move apart,
- wherein the first lateral adjustment arm and the second lateral adjustment arm includes a first retaining element and a second retaining element,
- wherein the first retaining element and the second retaining elements engage with the first and second sliding plates, respectively,
- wherein the expansion assembly includes a central ramp positioned between the first endplate and the second endplate, and
- wherein the expansion assembly further includes a driving ramp positioned between the first endplate and the second endplate, wherein movement of the central ramp and the driving ramp towards one another causes the first endplate to move away from the second endplate.
7 more elements
Dependencies are inferred from the claim text.