US 12,213,893 B2
Lordotic expandable interbody implant and method of using same
Christopher Stein, Fallbrook, CA (US); and Seth Gustine, Encinitas, CA (US)
Assigned to NuVasive, Inc., San Diego, CA (US)
Filed by NuVasive, Inc., San Diego, CA (US)
Filed on May 22, 2023, as Appl. No. 18/321,043.
Application 18/321,043 is a continuation of application No. 16/667,766, filed on Oct. 29, 2019, granted, now 11,696,836.
Application 16/667,766 is a continuation of application No. 15/799,554, filed on Oct. 31, 2017, granted, now 10,492,924, issued on Dec. 3, 2019.
Application 15/799,554 is a continuation of application No. 14/456,640, filed on Aug. 11, 2014, granted, now 9,801,734, issued on Oct. 31, 2017.
Claims priority of provisional application 61/864,132, filed on Aug. 9, 2013.
Prior Publication US 2023/0285164 A1, Sep. 14, 2023
Int. Cl. A61F 2/44 (2006.01); A61F 2/30 (2006.01)
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)] 19 Claims
OG exemplary drawing
 
1. An expandable implant comprising:
a housing including a proximal wall and a distal wall;
a first endplate moveably attached to the housing and having a first interior surface including a first ramp, and a second endplate moveably coupled to the housing and having a second interior surface including a second ramp;
a wedge positioned at least partially within the housing, the wedge including a first surface configured to engage the first ramp and a second surface configured to engage the second ramp; and
a drive mechanism configured to engage the proximal wall of the housing and drive the wedge relative to the housing, thereby moving the expandable implant from a collapsed configuration to an expanded configuration,
wherein in the expanded configuration, a height between the first and second endplates increases along a direction from the proximal wall toward the distal wall of the housing, and wherein the distal wall of the housing is free of the drive mechanism,
wherein the first and second endplates each include: an interior side wall having a recess, and a projection configured to engage the wedge and lock the first and second endplates in the collapsed configuration.