US 11,850,166 B2
Systems and methods for an expandable interbody device
Michael D. White, San Francisco, CA (US); and Dakota Graham, San Francisco, CA (US)
Assigned to Dignity Health, San Francisco, CA (US)
Appl. No. 18/042,319
Filed by Dignity Health, San Francisco, CA (US)
PCT Filed Sep. 1, 2021, PCT No. PCT/US2021/048689
§ 371(c)(1), (2) Date Feb. 21, 2023,
PCT Pub. No. WO2022/051380, PCT Pub. Date Mar. 10, 2022.
Claims priority of provisional application 63/073,142, filed on Sep. 1, 2020.
Prior Publication US 2023/0240860 A1, Aug. 3, 2023
Int. Cl. A61F 2/44 (2006.01); A61F 2/28 (2006.01); A61F 2/30 (2006.01)
CPC A61F 2/447 (2013.01) [A61F 2002/285 (2013.01); A61F 2002/30406 (2013.01); A61F 2002/30518 (2013.01); A61F 2002/30525 (2013.01); A61F 2002/30624 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An expandable interbody cage device, comprising:
an axle including a first axle head and an opposite second axle head,
wherein the first axle head defines a first worm threading and wherein the second axle head defines an opposite second worm threading,
wherein the axle is rotatable about a direction of elongation of the axle in a first direction C or an opposite second direction D;
a plurality of arms in association with the axle, including:
a first arm in association with the first axle head, wherein the first arm includes a joint portion and a member portion, wherein the first arm is rotatable in a first direction A or an opposite second direction B about the joint portion by the first axle head of the axle, and wherein the first arm defines a first planar surface configured to contact a cortical bone surface of a first vertebra and an opposite second planar surface configured to contact a cortical bone surface of a second vertebra; and
a second arm in association with the opposite second axle head, wherein the second arm includes a joint portion and a member portion, wherein the second arm is rotatable in the first direction A or the opposite second direction B about the joint portion by the opposite second axle head of the axle, and wherein the second arm defines a first planar surface configured to contact the cortical bone surface of the first vertebra and an opposite second planar surface configured to contact the cortical bone surface of the second vertebra; and
a cage assembly encapsulating the axle and the joint portion of the first arm and the joint portion of the second arm, wherein the cage assembly includes a first external planar surface configured to contact an endplate surface of the first vertebra and an opposite second external planar surface configured to contact an endplate surface of the second vertebra.