Intervertebral implant
First Claim
Patent Images
1. An intervertebral implant configured to be inserted into an intervertebral space, the intervertebral implant comprising:
- (a) an integral one-piece body defining a rear body surface, a front body surface spaced from the rear body surface along a forward direction, an upper body surface, a lower body surface spaced from the upper body surface a first vertical distance with respect to a vertical direction, a first side surface, and a second side surface opposite the first side surface along a lateral direction that is perpendicular to the forward direction, the one-piece body further defining a first portion of the upper body surface that is continuous along the lateral direction from the first side surface to the second side surface, the front body surface further defining a forward-most portion with respect to the forward direction,wherein the one-piece body is configured such that when the intervertebral implant is inserted into the intervertebral space;
1) at least a portion of the upper body surface contacts an endplate of an upper vertebral body; and
2) the lower body surface contacts an endplate of a lower vertebral body; and
(b) a plate comprising a biocompatible, non-bone material, the plate defining a front plate surface and a rear plate surface that is opposite the front plate surface, a first plate hole, and a second plate hole, the first plate hole configured to receive a portion of a first bone fixation element such that the first bone fixation element passes through the endplate of the upper vertebral body, the first plate hole including a first opening in the front plate surface and a first central axis, the first central axis extending centrally through the first plate hole and passing through the first opening, the second plate hole configured to receive a portion of a second bone fixation element such that the second bone fixation element passes through the endplate of the lower vertebral body, the second plate hole including a second opening in the front plate surface and a second central axis, the second central axis extending centrally through the second plate hole and passing through the second opening;
wherein the plate is configured to be mounted to the one-piece body such that a portion of the plate faces the one-piece body and is positioned between the forward-most portion of the front body surface and the rear body surface with respect to the forward direction, and when the plate is mounted to the one-piece body, the first central axis passes through the first opening at a first location that is;
1) spaced from the upper body surface a second vertical distance with respect to the vertical direction;
2) spaced from the lower body surface a third vertical distance with respect to the vertical direction, such that the second and third vertical distances are each less than the first vertical distance; and
3) positioned between the first and second side surfaces with respect to the lateral direction, and the second central axis passes through the second opening at a second location that is;
1) spaced from the upper body surface a fourth vertical distance with respect to the vertical direction and
2) spaced from the lower body surface a fifth vertical distance with respect to the vertical direction, such that the fourth and fifth vertical distances are each less than the first vertical distance; and
3) positioned between the first and second side surfaces with respect to the lateral direction.
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Abstract
An intervertebral implant includes a three-dimensional body and a securing plate. The three-dimensional body includes a front surface and a rear surface. The three-dimensional body further includes a plurality of boreholes for accommodating fixation elements. The intervertebral implant also includes a front plate disposed at the front surface of the three-dimensional body and having a plurality of boreholes. A securing plate can be fastened to the front plate.
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Citations
30 Claims
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1. An intervertebral implant configured to be inserted into an intervertebral space, the intervertebral implant comprising:
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(a) an integral one-piece body defining a rear body surface, a front body surface spaced from the rear body surface along a forward direction, an upper body surface, a lower body surface spaced from the upper body surface a first vertical distance with respect to a vertical direction, a first side surface, and a second side surface opposite the first side surface along a lateral direction that is perpendicular to the forward direction, the one-piece body further defining a first portion of the upper body surface that is continuous along the lateral direction from the first side surface to the second side surface, the front body surface further defining a forward-most portion with respect to the forward direction, wherein the one-piece body is configured such that when the intervertebral implant is inserted into the intervertebral space;
1) at least a portion of the upper body surface contacts an endplate of an upper vertebral body; and
2) the lower body surface contacts an endplate of a lower vertebral body; and(b) a plate comprising a biocompatible, non-bone material, the plate defining a front plate surface and a rear plate surface that is opposite the front plate surface, a first plate hole, and a second plate hole, the first plate hole configured to receive a portion of a first bone fixation element such that the first bone fixation element passes through the endplate of the upper vertebral body, the first plate hole including a first opening in the front plate surface and a first central axis, the first central axis extending centrally through the first plate hole and passing through the first opening, the second plate hole configured to receive a portion of a second bone fixation element such that the second bone fixation element passes through the endplate of the lower vertebral body, the second plate hole including a second opening in the front plate surface and a second central axis, the second central axis extending centrally through the second plate hole and passing through the second opening; wherein the plate is configured to be mounted to the one-piece body such that a portion of the plate faces the one-piece body and is positioned between the forward-most portion of the front body surface and the rear body surface with respect to the forward direction, and when the plate is mounted to the one-piece body, the first central axis passes through the first opening at a first location that is;
1) spaced from the upper body surface a second vertical distance with respect to the vertical direction;
2) spaced from the lower body surface a third vertical distance with respect to the vertical direction, such that the second and third vertical distances are each less than the first vertical distance; and
3) positioned between the first and second side surfaces with respect to the lateral direction, and the second central axis passes through the second opening at a second location that is;
1) spaced from the upper body surface a fourth vertical distance with respect to the vertical direction and
2) spaced from the lower body surface a fifth vertical distance with respect to the vertical direction, such that the fourth and fifth vertical distances are each less than the first vertical distance; and
3) positioned between the first and second side surfaces with respect to the lateral direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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- 17. The intervertebral implant according 16, wherein the second plate hole of the plate is located closer to the lower body surface than the upper body surface, such that the second bone fixation element is configured to be anchored to the lower vertebral body.
Specification