Expandable fusion device and method of installation thereof

A lateral expandable fusion device comprising:

• first and second endplates each having a longitudinal axis running between a front end and a rear end, and defining a posterior side and an anterior side;
• a translator disposed between the first and second endplates, and including an anterior translation bar and a posterior translation bar slidably coupled to the anterior translation bar;
• a first actuator in engagement with the anterior translation bar and configured to longitudinally translate relative to the anterior translation bar;
• a second actuator in engagement with the posterior translation bar and configured to longitudinally translate relative to the posterior translation bar independently of the first actuator;
• first and second joists respectively slidably coupled to the anterior and posterior translation bars such that:
• actuation of the first actuator translates the first joist vertically relative to the anterior translation bar such that the anterior side of the first endplate moves away from the second endplate while pivoting relative to the first joist;
• actuation of the second actuator translates the second joist vertically relative to the posterior translation bar such that the posterior side of the first endplate moves away from the second endplate while pivoting relative to the second joist;
• and
• anterior and posterior ramps respectively coupled to the anterior and posterior translation bars for independent longitudinal translation of the anterior and posterior translation bars;
• wherein the first joist includes a first ramped surface coupled to a corresponding ramped surface of the anterior ramp and a second ramped surface coupled to a corresponding ramped surface of the anterior translation bar.