US 12,419,757 B2
Spinal cage
Dae-Chul Cho, Daegu (KR); and Gunwoo Noh, Daegu (KR)
Assigned to KYUNGPOOK NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION, Daegu (KR)
Appl. No. 17/927,161
Filed by KYUNGPOOK NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION, Daegu (KR)
PCT Filed May 21, 2021, PCT No. PCT/KR2021/006309
§ 371(c)(1), (2) Date Nov. 22, 2022,
PCT Pub. No. WO2022/010093, PCT Pub. Date Jan. 13, 2022.
Claims priority of application No. 10-2020-0085467 (KR), filed on Jul. 10, 2020.
Prior Publication US 2023/0190486 A1, Jun. 22, 2023
Int. Cl. A61F 2/44 (2006.01); A61F 2/30 (2006.01)
CPC A61F 2/442 (2013.01) [A61F 2002/30014 (2013.01); A61F 2002/30069 (2013.01); A61F 2002/30563 (2013.01); A61F 2002/4495 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A spinal cage comprising:
a bone support portion configured to be disposed between a first vertebra at an upper side and a second vertebra at a lower side, which neighbor each other, to support the first vertebra;
a base portion positioned at a lower side of the bone support portion and configured to be disposed between the first vertebra and the second vertebra to come in contact with the second vertebra; and
a sidewall portion including:
an upper side end connected to an edge of the bone support portion;
a lower side end connected to an edge of the base portion to support the bone support portion relative to the base portion; and
an elastic band positioned between a first inelastic band and a second inelastic band, the elastic band being elastically deformable in response to a pressure between the first vertebra and the second vertebra,
wherein the first inelastic band has an upper side connected to the edge of the bone support portion and a lower side connected to the elastic band, and the second inelastic band has an upper side connected to the elastic band and a lower side connected to the edge of the base portion,
wherein the first and second inelastic bands have lower elasticity than the elastic band or no elasticity,
wherein a cross-sectional thickness of the elastic band gradually increases from a center thereof toward an edge thereof, and
wherein the elastic band comprises a plurality of elastic unit bodies arranged in series, the elastic unit bodies being elastically deformable in response to an external force.