EXPANDABLE SPINAL INTERBODY SPACER AND METHOD OF USE

摘要

An expandable spinal implant configured for positioning within a space between adjacent vertebral bodies includes an upper body, a lower body, a ratchet mechanism, and a plurality of bone screws. The upper body and lower body are pivotably affixed at a first end and are capable of movement relative to each other. The ratchet mechanism is slidably disposed on one of the upper and lower body and is capable of engaging the opposite one of the upper and lower body thereby permitting movement of the upper and lower body relative to each other in a first direction, but not in a second direction. An insertion instrument capable of being attached to the expandable spinal instrument and a method of performing spinal surgery is also disclosed.

主权项

1. A spinal implant, comprising:
an upper body and a lower body pivotably affixed at a first end and capable of movement relative to each other, each of the upper body and the lower body dimensioned to be installed between two vertebral bodies, the outer surfaces of each of the upper body and the lower body are adapted to engage a corresponding end plate of the two vertebral bodies, wherein screw holes are defined through the outer surface and an adjacent side surface of the upper body and through the outer surface and an adjacent side surface of the lower body, wherein the screw holes are oriented towards a respective adjacent one of the two vertebral bodies at an oblique angle; a ratchet mechanism slidably disposed on one of the upper and lower bodies, the ratchet mechanism capable of engaging the opposite one of the upper and lower body thereby permitting movement of the upper and lower bodies relative to each other in a first direction, but not in a second direction; and a plurality of bone screws, each bone screw of the plurality of bone screws insertable through a corresponding screw hole of the upper body and the lower body, the plurality of bone screws capable of being attached to bone.