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US 10,945,859 B2Granted
Expanding fusion cages
AssigneeAmplify Surgical, Inc.
InventorsDarin Ewer, Trevor K. Lewis, Justin Hyer, Nicholas Slater, Nathan O. Plowman
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Abstract
Expandable fusion cages are disclosed which may be expandable in two substantially mutually perpendicular directions.
Claims18
An expandable fusion cage system comprising:
- a cage comprising a plurality of links hinged together end to end, wherein the links are rotatable relative to each other in a plane;
- a wedge component having a tapered first end;
- and
- wherein each one of the plurality of links comprises an upper member and a lower member, wherein the upper members are movable relative to the lower members along an axis normal to the plane;
- and
- wherein the wedge component is receivable between the upper and lower members;
- wherein the plurality of links further comprises:
- a first link extending from a first end to a second end having a first upper member and a first lower member;
- a second link extending from a first end to a second end having a second upper member and a second lower member;
- a third link extending from a first end to a second end having a third upper member and a third lower member;
- a fourth link extending from a first end to a second end having a fourth upper member and a fourth lower member;
- and
- wherein the first link is connected to the second link at the respective first ends, which are connected via a first post;
- wherein the first link is connected to the third link at the respective second ends, which are connected via a second post;
- wherein the second link is connected to the fourth link at the respective second ends, which are connected via a third post;
- wherein the third link is connected to the fourth link at the respective first ends, which are separated by a first distance.
13 more elements
An expandable fusion cage system comprising:
- a cage comprising a plurality of links hinged together end to end, wherein the links are rotatable relative to each other in a plane, wherein the plurality of links comprises four links hinged together to form a quadrilateral polygon;
- a wedge component having a tapered first end;
- and
- wherein each one of the plurality of links comprises an upper member and a lower member, wherein the upper members are movable relative to the lower members along an axis normal to the plane;
- and
- wherein the wedge component is receivable between the upper and lower members.
3 more elements
Dependencies are inferred from the claim text.