CURVILINEAR CERVICAL INTERBODY DEVICE
First Claim
1. An interbody spacer assembly for replacing either a vertebra or disk, comprising:
- first and second end pieces, said end pieces spaced apart from each other and defining an interior region between said end pieces for receiving bone graft material;
at least one fastener for securing the spacer assembly to a vertebral body; and
a curvilinear connector between the first and second end pieces to adjust the spacing between them.
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Accused Products
Abstract
An interbody spacer assembly includes a pair of end pieces spaced apart by a connector extending between them. The end pieces extend generally parallel to the end plates of adjoining vertebral bodies. Fasteners connect the end pieces to the vertebral bodies. Bone graft material or solid bone can be placed in the interior space defined by the end pieces and connector, which bone graft material or solid bone eventually fuses together and to the adjoining end plates through the end pieces. The spacer assembly has ratchets to connect the two end pieces. The ratchets near the fasteners are more closely spaced than the ratchets further from the fasteners, allowing the spacer assembly to more closely approximate the lordosis of the spine.
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Citations
24 Claims
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1. An interbody spacer assembly for replacing either a vertebra or disk, comprising:
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first and second end pieces, said end pieces spaced apart from each other and defining an interior region between said end pieces for receiving bone graft material;
at least one fastener for securing the spacer assembly to a vertebral body; and
a curvilinear connector between the first and second end pieces to adjust the spacing between them. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An interbody spacer assembly for replacing either a vertebra or a disk, comprising:
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first and second end pieces, the end pieces spaced apart from each other and including mating connectors extending between the first and second end pieces;
at least one fastener for securing the spacer assembly to a vertebral body;
a flange extending from at least one of said end pieces, the flange receiving the at least one fastener for securing the spacer assembly to a vertebral body; and
ratchets on the connectors, the ratchets having a first spacing on the first end piece and a second spacing on the second end piece. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An interbody spacer assembly for replacing either a vertebra or disk, comprising:
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a pair of end pieces, each of said end pieces having a plurality of apertures extending through said end pieces;
a connector adjustably connecting and spacing said end pieces to correspond to a curvature of the replaced vertebra or disk, said end pieces and connector defining an interior space;
a flange extending from each of said end pieces and away from said interior space;
at least one fastener engaging at least one of said flanges for securing said spacer assembly to a vertebral body; and
a retainer extending between the first and second end pieces for retaining bone graft material within said interior space. - View Dependent Claims (17, 18, 19, 20)
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21. A method of inserting an interbody spacer assembly for replacing vertebral bodies of a spine, said method comprising:
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placing the interbody spacer assembly between vertebral bodies of a spine, wherein the interbody spacer assembly comprises first and second end pieces, said end pieces spaced apart from each other; and
moving the first and second end pieces relative to each other in a curvilinear path to substantially fill the space between the vertebral bodies both longitudinally and laterally. - View Dependent Claims (22, 23, 24)
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Specification