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First Claim
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1. An intervertebral fusion device for promoting fusion of first and second vertebrae, the device comprising:
- first and second endplate modules, each including an outer surface adapted to interface with vertebral bone, an opposite inner surface, a retaining wall extending from the inner surface, and an attachment feature, wherein a keel extends from a central portion of the outer surface;
a central module adapted to extend between the first and second endplate modules and further adapted for connection with the attachment feature, the central module having an upper surface, a lower surface, an outer wall, and an inner wall, the inner wall defining an opening between the upper surface and the lower surface such that when the central module is positioned between the first and second endplate modules and connected with the attachment features of the first and second endplate modules the retaining walls of the first and second endplate modules are positioned within the opening of the central module to maintain the central module in a fixed position relative to the first and second endplate modules,wherein a pair of through passages extends through the outer and inner surfaces of the each of the first and second endplates such that the through passages are in communication with the opening of the central module when the central module is positioned between the first and second endplate modules and connected with the attachment features of the first and second endplate modules, wherein the pair of through passages are positioned on either side of the keel such that the keel separates the pair of through passages.
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Abstract
An intervertebral fusion device for promoting fusion of first and second vertebrae comprises first and second endplate modules. Each endplate module includes an outer surface adapted to interface with vertebral bone and an opposite inner surface. The endplate modules further include an attachment feature. A central module is adapted to extend between the first and second endplate modules and is further adapted for connection with the attachment feature. A through passage extends through the outer and inner surfaces of the each of the first and second endplates and through the central module.
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Citations
24 Claims
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1. An intervertebral fusion device for promoting fusion of first and second vertebrae, the device comprising:
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first and second endplate modules, each including an outer surface adapted to interface with vertebral bone, an opposite inner surface, a retaining wall extending from the inner surface, and an attachment feature, wherein a keel extends from a central portion of the outer surface; a central module adapted to extend between the first and second endplate modules and further adapted for connection with the attachment feature, the central module having an upper surface, a lower surface, an outer wall, and an inner wall, the inner wall defining an opening between the upper surface and the lower surface such that when the central module is positioned between the first and second endplate modules and connected with the attachment features of the first and second endplate modules the retaining walls of the first and second endplate modules are positioned within the opening of the central module to maintain the central module in a fixed position relative to the first and second endplate modules, wherein a pair of through passages extends through the outer and inner surfaces of the each of the first and second endplates such that the through passages are in communication with the opening of the central module when the central module is positioned between the first and second endplate modules and connected with the attachment features of the first and second endplate modules, wherein the pair of through passages are positioned on either side of the keel such that the keel separates the pair of through passages. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A prosthetic spinal device, comprising:
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a lower endplate module having an outer surface sized and shaped for engaging an lower vertebra, an inner surface opposite the outer surface, the inner surface including a protrusion and an attachment feature, at least two passages extending through the lower endplate module from the outer surface to the inner surface, and an engagement feature extending from the outer surface and positioned between the at least two passages; an upper endplate module having an outer surface sized and shaped for engaging an upper vertebra, an inner surface opposite the outer surface, at least two passages extending through the upper endplate module from the outer surface to the inner surface, and an engagement feature extending from the outer surface and positioned between the at least two passages; and a central module sized and shaped to be positioned between the upper and lower endplate modules, the central module having an upper surface for engaging with the inner surface of the upper endplate module, a lower surface for engaging with the inner surface of the lower endplate module, an outer wall, and an inner wall, the inner wall defining a single passage between the upper surface and the lower surface such that when the central module is positioned between the upper and lower endplate modules the protrusion of the lower endplate module the single passage of the central module to maintain the central module in a fixed position relative to the lower endplate module and such that the at least two passages of each of the upper and lower endplate modules are aligned with the single passage of the central module. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An intervertebral fusion device for promoting fusion of first and second vertebrae, the device comprising:
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a first endplate module having; a body portion defining an outer surface configured for engagement with a vertebra, an opposing inner surface, and a pair of openings extending through the body portion from the outer surface to the inner surface; a D-shaped retaining wall extending from the inner surface, wherein the pair of openings are positioned within a boundary defined by the D-shaped retaining wall; and a bone-engaging protrusion extending from the outer surface and configured for engagement with the vertebra, the bone-engaging protrusion positioned between the pair of openings; a second endplate module having; a body portion defining an outer surface configured for engagement with a vertebra, an opposing inner surface, and a pair of openings extending through the body portion from the outer surface to the inner surface; a D-shaped retaining wall extending from the inner surface, wherein the pair of openings are positioned within a boundary defined by the D-shaped retaining wall; and a bone-engaging protrusion extending from the outer surface and configured for engagement with the vertebra, the bone-engaging protrusion positioned between the pair of openings; a central module sized and shaped to be positioned between and engaged with the first and second endplate modules, wherein the central module includes a single central passage extending between an upper surface and a lower surface such that when the central module is positioned between and engaged with the first and second endplate modules the pair of openings of each of the first and second endplate modules are in communication with the single central passage of the central module. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification