Expandable intervertebral implant and related methods

摘要

An expandable implant with first and second plates spaced apart from each other along a first direction. The plate defines opposed bone contacting surfaces configured to contact the superior and inferior vertebral bodies, respectively, along a first direction. An actuating member disposed between the plates defines a first axis, a first end, and a second end spaced from the first end along a second direction of the axis. .. The second direction is perpendicular to the first direction. The implant has first and second wedges on the actuating member that engage the plate, and a spaced apart along a third direction, and a second along a second direction perpendicular to the first direction. A drive member along a second axis that is offset from the direction of. The drive member transmits a force to the actuating member to rotate it and, in response to the rotation, translates one of the wedge members along a second direction to move one of the plates. Let