US 12,213,891 B2
Expandable and adjustable lordosis interbody fusion system
Andrew Rogers, Deephaven, MN (US); and Robyn Burrows-Ownbey, Elmdale, KS (US)
Assigned to Adcura Inc., Eden Prairie, MN (US)
Filed by Adcura, Inc., Eden Prairie, MN (US)
Filed on Sep. 28, 2021, as Appl. No. 17/488,034.
Application 17/488,034 is a continuation of application No. 16/932,511, filed on Jul. 17, 2020, granted, now 11,160,669.
Application 16/932,511 is a continuation of application No. 16/001,852, filed on Jun. 6, 2018, granted, now 10,758,369, issued on Sep. 1, 2020.
Application 16/001,852 is a continuation of application No. 15/859,241, filed on Dec. 29, 2017, granted, now 10,188,527, issued on Jan. 29, 2019.
Application 15/859,241 is a continuation of application No. 14/473,200, filed on Aug. 29, 2014, granted, now 9,889,019, issued on Feb. 13, 2018.
Claims priority of provisional application 61/871,780, filed on Aug. 29, 2013.
Prior Publication US 2022/0015922 A1, Jan. 20, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 2/44 (2006.01); A61F 2/46 (2006.01); A61F 2/30 (2006.01)
CPC A61F 2/447 (2013.01) [A61F 2/4455 (2013.01); A61F 2/4611 (2013.01); A61F 2002/30462 (2013.01); A61F 2002/30507 (2013.01); A61F 2002/30523 (2013.01); A61F 2002/30525 (2013.01); A61F 2002/30538 (2013.01); A61F 2002/30556 (2013.01); A61F 2002/30566 (2013.01); A61F 2/4465 (2013.01); A61F 2002/4627 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A spinal surgical device for placement between vertebral bodies, the device comprising:
a housing;
at least one screw member in the housing, the at least one screw member having a through-opening; and
at least one drive shaft having a length spanning substantially from a first end to a second end of the housing, the at least one drive shaft being adapted to pass through the through-opening in the at least one screw member; wherein
the housing comprises a first shell member and a second shell member, at least the first shell member having at least one riser member for receiving the at least one screw member,
the at least one drive shaft is configured to rotate the at least one screw member, allowing the at least one screw member to rotate with and travel along the at least one drive shaft,
the at least one screw member comprises a thread and a root surface having a varying minor diameter, the at least one riser member being engageable with the root surface of the at least one screw member, thereby rotation of the at least one screw member causes the first shell member and second shell member to move relative to each other in a first direction to effect expansion and in a second direction opposite to the first direction to effect contraction of the housing.