Interbody vertebral spacer
First Claim
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1. An interbody vertebral implant having a posterior side and an anterior side, the implant comprising:
- a first end plate having a first side configured to engage a first vertebra and a second side;
a second end plate having a first side and a second side configured to engage a second vertebra; and
an intermediate member having a first side and a second side and including a first arm extending along a first lateral side, a second arm extending along a second lateral side, and a central arm disposed between the first arm and the second arm, the intermediate member slidably disposed between the first and second end plates;
wherein the first arm, the second arm, and the central arm are connected along the posterior side by a connecting member;
wherein the first end plate comprises a central channel extending along the second side of the first end plate from the anterior side toward the posterior side and the second end plate comprises a central channel extending along the first side of the second end plate from the anterior side toward the posterior side; and
wherein a pair of dovetail grooves extend along at least a portion of the central channels of the first and second end plates.
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Abstract
An interbody vertebral implant for facilitating fusion of adjacent vertebrae. The implant includes a first end plate, a second end plate, and an intermediate member disposed therebetween. The end plates are configured to allow bone in-growth. The intermediate member may include features to engage the end plates and to prevent over insertion of the intermediate member within the end plates. The implant may include a cavity extending through the composite implant configured to receive bone growth material to facilitate fusion between a first vertebra and a second vertebra.
45 Citations
25 Claims
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1. An interbody vertebral implant having a posterior side and an anterior side, the implant comprising:
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a first end plate having a first side configured to engage a first vertebra and a second side; a second end plate having a first side and a second side configured to engage a second vertebra; and an intermediate member having a first side and a second side and including a first arm extending along a first lateral side, a second arm extending along a second lateral side, and a central arm disposed between the first arm and the second arm, the intermediate member slidably disposed between the first and second end plates; wherein the first arm, the second arm, and the central arm are connected along the posterior side by a connecting member; wherein the first end plate comprises a central channel extending along the second side of the first end plate from the anterior side toward the posterior side and the second end plate comprises a central channel extending along the first side of the second end plate from the anterior side toward the posterior side; and wherein a pair of dovetail grooves extend along at least a portion of the central channels of the first and second end plates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An interbody vertebral implant having a posterior side and an anterior side, the implant comprising:
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a first end plate having a first side configured to engage a first vertebra and a second side; a second end plate having a first side and a second side configured to engage a second vertebra; and an intermediate member having a first side, a second side, a first lateral side, and a second lateral side, the first side of the intermediate member configured to engage the second side of the first end plate and the second side of the intermediate member configured to engage the first side of the second end plate; wherein the intermediate member comprises a connecting member, a first arm extending from the connecting member towards the anterior side along the first lateral side, a second arm extending from the connecting member towards the anterior side along the second lateral side, and a central arm extending from the connecting member towards the anterior side between the first and second arms; and wherein the central arm includes a fork having a first prong and a second prong adjacent to the anterior side. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. An interbody vertebral implant having a posterior side and an anterior side, the implant comprising:
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a first end plate having a first side configured to engage a first vertebra and a second side; a second end plate having a first side and a second side configured to engage a second vertebra; and an intermediate member having a first side configured to engage the second side of the first end plate and a second side configured to engage the first side of the second end plate; wherein the intermediate member comprises; a connecting member extending from a first lateral side to a second lateral side along the posterior side; a first arm extending from the connecting member towards the anterior side along the first lateral side and including at least one stop member adjacent the anterior side; a second arm extending from the connecting member towards the anterior side along the second lateral side and including at least one stop member; and a central arm extending from the connecting member towards the anterior side between the first and second arms and including a fork having a first prong and a second prong adjacent to the anterior side; wherein the second side of the first end plate comprises means for engaging the first side of the intermediate member and the first side of the second end plate comprises means for engaging the second side of the intermediate member.
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19. An interbody vertebral implant having a posterior side and an anterior side, the implant comprising:
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a first end plate having a first side configured to engage a first vertebra and a second side; a second end plate having a first side and a second side configured to engage a second vertebra; an intermediate member having a first side and a second side and including a first arm extending along a first lateral side and a second arm extending along a second lateral side, the intermediate member slidably disposed between the first and second end plates, the first arm of the intermediate member including a first hole configured for receiving a first vertebral anchor therethrough to secure the implant to the first vertebra, and the second arm of the intermediate member including a second hole configured for receiving a second vertebral anchor therethrough to secure the implant to the second vertebra; and a first locking mechanism configured to prevent movement of the intermediate member relative to the first end plate while simultaneously preventing the first vertebral anchor from backing out of the first hole. - View Dependent Claims (20, 21, 22)
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23. An interbody vertebral implant having a posterior side and an anterior side, the implant comprising:
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a first end plate having a first side configured to engage a first vertebra and a second side; a second end plate having a first side and a second side configured to engage a second vertebra; and an intermediate member having a first side and a second side and including a first arm extending along a first lateral side, a second arm extending along a second lateral side, and a central arm disposed between the first arm and the second arm, the intermediate member slidably disposed between the first and second end plates; wherein the first arm, the second arm, and the central arm are connected along the posterior side by a connecting member; and wherein the first arm includes a first stop member on the first side thereof and a second stop member on the second side thereof and the second arm includes a third stop member on the first side thereof and a fourth stop member on the second side thereof. - View Dependent Claims (24, 25)
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Specification