Variable lordosis spacer and related methods of use
AssigneeGlobus Medical, Inc.
InventorsMark Weiman, Chad Glerum, Alex Burkhardt, Kevin Gahman
Life of this patent
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Abstract
An expandable fusion device may include a first endplate and a second endplate. The expandable fusion device may also include first and second ramps configured to mate with both the first and second endplates. The first ramp may include a mating feature having a first angle relative to a vertical axis, and the second ramp may include a mating feature having a second angle relative to the vertical axis such that the first angle is different from the second angle. In particular, the first and second ramps may be configured to provide for symmetrical expansion of the first and second endplates.
Claims17
An expandable fusion device comprising:
- a first endplate having an outer surface that extends from a first lateral end to a second lateral end, the outer surface being configured to engage a first vertebral body;
- a second endplate having an outer surface that extends from a first lateral end to a second lateral end, the outer surface being configured to engage a second vertebral body;
- a first ramp having a front side, a back side, and first and second lateral sides, the first ramp configured to engage with both the first and second endplates, the front side facing a direction of insertion of the implant, the back side facing away from the direction of insertion;
- and
- a second ramp having a front side, a back side, and first and second lateral sides, the scone ramp configured to engage with both the first and second endplates, the front side facing the direction of insertion of the implant, the back side facing away from the direction of insertion,
- wherein a height of the first lateral side of the second ramp is different than a height of the second lateral side of the second ramp,
- wherein the expandable fusion device is movable between a collapsed configuration and an expanded configuration, and
- wherein in the collapsed configuration the outer surface of the first endplate from the first lateral end to the second lateral end is at a first endplate angle with respect to the outer surface of the second endplate from the first lateral end to the second lateral end.
An expandable fusion device comprising:
- a first endplate having an outer surface that extends from a first lateral end to a second lateral end, the outer surface being configured to engage a first vertebral body;
- a second endplate having an outer surface that extends from a first lateral end to a second lateral end, the outer surface being configured to engage a second vertebral body;
- a first ramp having a front side, a back side, and first and second lateral sides, the first ramp configured to engage with both the first and second endplates,
- a second ramp having a front side, a back side, and first and second lateral sides, the scone ramp configured to engage with both the first and second endplates,
- wherein a height of the first lateral side of the second ramp is different than a height of the second lateral side of the second ramp,
- wherein the expandable fusion device is movable between a collapsed configuration and an expanded configuration,
- wherein in the collapsed configuration the outer surface of the first endplate from the first lateral end to the second lateral end is at a first endplate angle with respect to the outer surface of the second endplate from the first lateral end to the second lateral end,
- wherein the first endplate angle is an oblique angle.
Dependencies are inferred from the claim text.