Expandable interbody device system and method

摘要

Provided is an intervertebral implant to be implanted within an intervertebral space between endplates of adjacent vertebra during use. The implant includes an upper member having an inferior surface including an upper guide track and a superior surface to contact an endplate of an upper one of the adjacent vertebra during use, a lower member having a superior surface including a lower guide track and an inferior surface to contact an endplate of a lower one of the adjacent vertebra during use, and an insert having a superior surface including an upper guide rail to engage the upper guide track during use and an inferior surface including a lower guide rail to engage the lower guide track during use. Engagement of the upper and lower guide rails with the upper and lower guide tracks, respectively, guides insertion of the insert between the upper and lower members during use, and insertion of the insert between the upper and lower members facilitates expansion of the intervertebral implant.

主权项

1. An intervertebral implant configured to be implanted within an intervertebral space between endplates of adjacent vertebra during use, the implant comprising:
a first member comprising:
an interior surface comprising a first guide track; andan exterior surface configured to contact an endplate of a first of the adjacent vertebra during use; a second member comprising:
an interior surface comprising a second guide track; andan exterior surface configured to contact an endplate of a second of the adjacent vertebra during use; and an insert comprising:
a first exterior surface comprising a first guide rail configured to engage the first guide track during use; anda second exterior surface comprising a second guide rail configured to engage the second guide track during use, wherein engagement of the first and second guide rails with the first and second guide tracks, respectively, guides insertion of the insert between the first and second members during use, and wherein insertion of a tapered insertion end of the insert between the first and the second members expands the intervertebral implant such that a separation distance between the first and the second members is increased; an actuatable locking mechanism coupling the insert to the first and second members of the implant during use to inhibit back-out of the insert from between the first and second members, wherein the locking mechanism is rotatably actuatable between a locked position and an unlocked position, and wherein the locking member comprises one or more members that substantially simultaneously engage at least a first locking recess of the first member and at least a second locking recess of the second member during use.