US 11,883,301 B2
Expandable interbody devices
Josh Gunn, Marietta, GA (US); Jay Yadav, Marietta, GA (US); Wayne Gray, Marietta, GA (US); Noah Roth, Marietta, GA (US); and Adam Marrocco, Marietta, GA (US)
Assigned to MiRus LLC, Marietta, GA (US)
Filed by MiRus LLC, Marietta, GA (US)
Filed on Jan. 5, 2022, as Appl. No. 17/568,848.
Application 17/568,848 is a continuation of application No. 16/147,986, filed on Oct. 1, 2018, granted, now 11,278,423.
Claims priority of provisional application 62/565,336, filed on Sep. 29, 2017.
Prior Publication US 2022/0125600 A1, Apr. 28, 2022
Int. Cl. A61F 2/44 (2006.01); A61B 17/70 (2006.01); A61F 2/46 (2006.01); A61F 2/30 (2006.01)
CPC A61F 2/4455 (2013.01) [A61B 17/70 (2013.01); A61F 2/4611 (2013.01); A61F 2/30771 (2013.01); A61F 2/442 (2013.01); A61F 2002/30507 (2013.01); A61F 2002/30556 (2013.01); A61F 2002/30579 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An expandable interbody device, comprising:
a structural body having an upper endplate and a lower endplate said upper and lower endplates are shaped to nest in a closed position; said upper and lower endplates movable between an open and closed position; a spacing between front ends and rear ends of said upper and lower endplates is configured to increase when said upper and lower endplates move from said closed position to said open position;
a wedge block arrangement at least partially positioned between the upper and lower endplates of the structural body; said wedge block arrangement configured to facilitate in causing said upper and lower endplates to move between said open and closed positions;
a linkage block arrangement at least partially positioned between the upper and lower endplates of the structural body, said linkable block arrangement connected one or both of said upper and lower endplates; and
a drive screw at least partially positioned in an opening in said wedge block arrangement; said drive screw is configured to rotate and engage the wedge block arrangement to cause said wedge block arrangement to move relative to said upper and lower endplates; movement of said wedge block arrangement causing movement of said linkage block arrangement thereby causing said upper and lower endplates to move between said open and closed positions; said wedge block arrangement configured to engage at least one of said upper and lower endplates to cause at least one of said upper and lower endplates of said structural body to expand from said closed position to an intermediate position, and wherein further rotation of said drive screw is configured to cause at least one of the upper and lower endplates to disengage from said wedge block arrangement and said linkage block arrangement thereafter causes said upper and lower endplates of said structural body to expand from said intermediate position to said open position.