Patent ID: 9662224
Date: 2017-05-30
CPC Classifications: A61F

Claim:
1. A system comprising: an expandable fusion device comprising: a first endplate having an upper surface defining a first plane extending from a first side of the expandable fusion device to a second side of the expandable fusion device, and a second endplate having a lower surface defining a second plane extending from the first side of the expandable fusion device to the second side of the expandable fusion device, wherein the first and second endplates each include at least one mating feature; a first ramp including at least one opening and mating features configured to mate with the at least one mating features of the first and second endplates, wherein the first ramp is slidable with respect to the first and second endplates; a second ramp including at least one opening generally aligned with the at least one opening in the first ramp and mating features configured to mate with the at least one mating features of the first and second endplates; and a threaded member configured to engage a corresponding opening in each of the first ramp and the second ramp to lock a position of the first ramp relative to a position of the second ramp, wherein the expandable fusion device is movable between a collapsed configuration and an expanded configuration and in the collapsed configuration the first plane and the second plane are non-parallel; and an inserter instrument comprising: an outer shaft having a bore extending longitudinally therethrough, the outer shaft configured to engage the at least one opening in the second ramp; and an inner shaft extending through the bore in the outer shaft, the inner shaft configured to engage the at least one opening in the first ramp.