US 11,679,004 B2
Sagittal balance systems and methods of use thereof
Frank LaMarca, Ann Arbor, MI (US); Robert Lee, Hertfordshire (GB); Gregory Poulter, Indianapolis, IN (US); Steven Tresser, Tampa, FL (US); Michael Wang, North Miami, FL (US); Josh Rubin, Reston, VA (US); Hadley Sis, Reston, VA (US); and Nick Padovani, Arlington, VA (US)
Assigned to K2M, Inc., Leesburg, VA (US)
Filed by K2M, Inc., Leesburg, VA (US)
Filed on Apr. 22, 2021, as Appl. No. 17/237,549.
Application 17/237,549 is a continuation of application No. 16/156,600, filed on Oct. 10, 2018, granted, now 11,013,616.
Prior Publication US 2021/0236301 A1, Aug. 5, 2021
Int. Cl. A61F 2/46 (2006.01); A61F 2/44 (2006.01); A61B 17/02 (2006.01); A61F 2/30 (2006.01)
CPC A61F 2/4611 (2013.01) [A61B 17/025 (2013.01); A61F 2/30749 (2013.01); A61F 2/30771 (2013.01); A61F 2/4425 (2013.01); A61B 2017/0256 (2013.01); A61F 2/4603 (2013.01); A61F 2002/30405 (2013.01); A61F 2002/30784 (2013.01); A61F 2002/30934 (2013.01); A61F 2002/469 (2013.01); A61F 2002/4615 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An expandable interbody spacer, comprising:
a first body portion pivotably coupled to a second body portion,
wherein each of the first body portion and the second body portion defines a bone screw mount offset from a plane transverse to a pivot axis defined by a rod,
wherein the pivot axis is parallel to an axis of the expandable interbody spacer extending in a lateral to medial direction when the expandable interbody spacer is implanted, and
wherein each bone screw mount is along a second axis perpendicular to the plane when the expandable interbody spacer is in a closed configuration;
a pawl beam rotatably coupled to the second body portion; and
a plurality of teeth extending from an engagement wall of the first body portion, the plurality of teeth configured to engage the pawl beam,
wherein transitioning the expandable interbody spacer from the closed configuration to an open configuration causes the pawl beam to engage the plurality of teeth to prevent the expandable interbody spacer from transitioning towards the closed configuration.