| 摘要 |
The present invention provides an expandable fusion device capable of being installed inside an intervertebral disc space to maintain normal disc spacing and restore spinal stability, thereby facilitating an intervertebral fusion. In one embodiment, the fusion device includes a body portion, a first endplate, and a second endplate, the first and second endplates capable of being moved in a direction away from the body portion into an expanded configuration or capable of being moved towards the body portion into an unexpanded configuration. The fusion device is capable of being deployed and installed in both configurations. |
| 主权项 |
1. An intervertebral implant comprising:
a body portion having a central opening; a first endplate comprising an upper side, a lower side, a first ramped portion and a second ramped portion, the first and second ramped portions extending from the lower side into the central opening; a second endplate comprising an upper side, a lower side, a third ramped portion, and a fourth ramped portion, the third and fourth ramped portions extending from the lower side into the central opening; and a translation member received within the central opening, the translation member comprising a first angled surface, a second angled surface, the first angled surface engages the first ramped portion, and the second angled surface engages the second ramped portion; wherein movement of the translation member in a first direction causes the first and second endplates to move in a direction away from the body portion and the movement of the translation member in a second direction causes the first and second endplates to move in a direction towards the body portion, and wherein the first and second angled surface are at a first distance from each other when the first endplate is in an unexpanded position and at a second distance at an expanded position, wherein the first and second distances are equal. |
