CPC A61F 2/447 (2013.01) [A61F 2002/30158 (2013.01); A61F 2002/30387 (2013.01); A61F 2002/30471 (2013.01); A61F 2002/30507 (2013.01); A61F 2002/30538 (2013.01); A61F 2002/30904 (2013.01)] | 20 Claims |
1. An expandable spinal fusion implant, comprising:
a housing having a hollow interior defined by a proximal endwall, a distal endwall, an anterolateral sidewall, and a posterolateral sidewall;
an upper endplate moveably attached to the housing and having a first interior surface including a first ramp, and a lower endplate moveably coupled to the housing and having a second interior surface including a second ramp;
a wedge positioned within the housing between the first interior surface and second interior surface, the wedge including a first surface that engages the first ramp and a second surface that engages the second ramp; and
a drive mechanism configured to drive the wedge moving the upper endplate and the lower endplate from a collapsed configuration to an expanded configuration, with the upper endplate and the lower endplate forming a height which increases across the upper endplate and the lower endplate from a proximal end towards a distal end,
wherein the drive mechanism engages the wedge and the proximal wall of the housing, and wherein the distal wall of the housing is free of the drive mechanism.
|