Intersomatic cage, intervertebral prosthesis, anchoring device and implantation instruments
First Claim
1. A fusion cage system configured for implantation in the intervertebral space between adjacent vertebrae and the fusing of the adjacent vertebrae, the fusion cage system comprising:
- a cage comprisinga peripheral wall, the peripheral wall comprising a top surface, a bottom surface, and an exterior face disposed between the top surface and the bottom surface, andan enclosed channel extending from an opening in the exterior face toward the top surface; and
an anchor comprising a curved plate having a radius of curvature along a longitudinal axis of the anchor extending from a penetration end of the anchor to an impaction end of the anchor, with the orientation of the penetration end and the orientation of the impaction end forming a fixed angle established by the radius of curvature,the anchor being movable betweena withdrawn position in which the anchor is completely removed from the channel with the fixed angle in a first orientation, andan inserted position in which the anchor is inserted in the channel with the penetration end projecting above the top surface, a portion of the curved plate extending through the channel, the impaction end disposed adjacent to the opening in the exterior face, and the fixed angle remaining constant but rotated to a second orientation.
1 Assignment
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Accused Products
Abstract
An intersomatic cage, an intervertebral prosthesis, an anchoring device and an instrument for implantation of the cage or the prosthesis and the anchoring device are provided. An intersomatic cage or an intervertebral prosthesis fit closely to the anchoring device, which includes a body of elongated shape on a longitudinal axis, of curved shape describing, along the longitudinal axis, an arc whose dimensions and radius of curvature are designed in such a manner that the anchoring device may be implanted in the vertebral plate of a vertebra by presenting its longitudinal axis substantially along the plane of the intervertebral space, where the anchoring device is inserted, by means of the instrument, through a slot located in at least one peripheral wall of the cage or on at least one plate of the intervertebral disc prosthesis to penetrate into at least one vertebral plate.
110 Citations
21 Claims
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1. A fusion cage system configured for implantation in the intervertebral space between adjacent vertebrae and the fusing of the adjacent vertebrae, the fusion cage system comprising:
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a cage comprising a peripheral wall, the peripheral wall comprising a top surface, a bottom surface, and an exterior face disposed between the top surface and the bottom surface, and an enclosed channel extending from an opening in the exterior face toward the top surface; and an anchor comprising a curved plate having a radius of curvature along a longitudinal axis of the anchor extending from a penetration end of the anchor to an impaction end of the anchor, with the orientation of the penetration end and the orientation of the impaction end forming a fixed angle established by the radius of curvature, the anchor being movable between a withdrawn position in which the anchor is completely removed from the channel with the fixed angle in a first orientation, and an inserted position in which the anchor is inserted in the channel with the penetration end projecting above the top surface, a portion of the curved plate extending through the channel, the impaction end disposed adjacent to the opening in the exterior face, and the fixed angle remaining constant but rotated to a second orientation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A fusion device configured for implantation in the intervertebral space between adjacent vertebrae and the fusing of the adjacent vertebrae, the fusion device comprising:
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a fusion cage comprising a peripheral wall, the peripheral wall comprising a top surface, a bottom surface, and an exterior face disposed between the top surface and the bottom surface, a first passage extending from a first opening in the exterior face toward the top surface, and a second passage extending from a second opening in the exterior face toward the bottom surface; and a first anchor and a second anchor separate from and independently movable with respect to the first anchor, each of the first and second anchors comprising a curved plate having a radius of curvature along a longitudinal axis of the anchor extending from a leading end of the anchor to a trailing end of the anchor, with the orientation of the leading end and the orientation of the trailing end forming a fixed angle established by the radius of curvature, with the first anchor being movable between a first withdrawn position in which the fixed angle of the first anchor is disposed in a first withdrawn orientation and the leading end of the first anchor does not extend above the top surface, and a first inserted position in which the first anchor is inserted in the first passage with the leading end of the first anchor projecting above the top surface, a portion of the curved plate of the first anchor extending through the first passage, the trailing end of the first anchor disposed adjacent to the first opening in the exterior face, and the fixed angle of the first anchor remaining constant but rotated to a first inserted orientation that is angularly offset to the first withdrawn orientation, and with the second anchor being movable between a second withdrawn position in which the fixed angle of the second anchor is disposed in a second withdrawn orientation and the leading end of the second anchor does not extend above the bottom surface, and a second inserted position in which the second anchor is inserted in the second passage with the leading end of the second anchor projecting below the bottom surface, a portion of the curved plate of the second anchor extending through the second passage, the trailing end of the second anchor disposed adjacent to the second opening in the exterior face, and the fixed angle of the second anchor remaining constant but rotated to a second inserted orientation that is angularly offset to the second withdrawn orientation. - View Dependent Claims (13, 14, 15, 16, 18, 19, 20, 21)
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17. A spinal treatment device comprising:
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a cage configured for fusible implantation in a gap between a first vertebra and a second vertebra, the cage comprising plural vertebral contact surfaces and a passage extending from an opening on a side of the cage toward a first one of the vertebral contact surfaces of the cage; and an anchor elongated between first and second ends disposed at opposite ends of the anchor, with the anchor formed as a curved plate extending between the first and second ends and having a fixed angle established by the angular orientation of the first and second ends, the anchor being disposable through the passage and having a withdrawn position in which the fixed angle has a first orientation and an inserted position in which the fixed angle has a second orientation with the first end of the anchor disposed outside the passage adjacent to the first one of the vertebral contact surfaces of the cage and the second end of the anchor disposed proximal to the opening on the side of the cage.
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Specification