US 12,150,863 B2
Oblique spinal fusion cage
Gook Jin Kang, Seoul (KR); Youngbo Ahn, Lone Tree, NC (US); Sang Soo Lee, Anyang-si (KR); and Yun Seo Choi, Mount Eliza (AU)
Assigned to L&K BIOMED CO., LTD., Yongin-si (KR)
Appl. No. 17/620,558
Filed by L&K BIOMED CO., LTD., Yongin-si (KR)
PCT Filed Jun. 17, 2020, PCT No. PCT/KR2020/007849
§ 371(c)(1), (2) Date Dec. 17, 2021,
PCT Pub. No. WO2020/256410, PCT Pub. Date Dec. 24, 2020.
Claims priority of application No. 10-2019-0074169 (KR), filed on Jun. 21, 2019.
Prior Publication US 2022/0257386 A1, Aug. 18, 2022
Int. Cl. A61F 2/44 (2006.01)
CPC A61F 2/447 (2013.01) 6 Claims
OG exemplary drawing
 
1. An oblique spinal fusion cage configured to be inserted between vertebral bodies, comprising:
an anterior side portion;
a posterior side portion formed at a distance from the anterior side portion;
a medial side portion connected to the anterior side portion and the posterior side portion, at which insertion of the cage between vertebral bodies is initiated;
a lateral side portion connected to the anterior side portion and the posterior side portion, the lateral side portion configured to couple to an implant device; and
an anterior side bent portion and a posterior side bent portion formed at central portions of the anterior side portion and the posterior side portion, respectively, which are bent so that centers of curvatures thereof are configured to face an anterior side of a patient, such that the posterior side bent portion, the medial side portion, and the lateral side portion are configured to be located in cortical regions of the vertebral bodies, wherein, in the anterior side portion, anterior side straight portions, which are straight sections, are formed between the medial side portion and the lateral side portion with the anterior side bent portion interposed therebetween, and
in the posterior side portion, posterior side straight portions, which are straight sections, are formed between the medial side portion and the lateral side portion with the posterior side bent portion interposed therebetween, and
wherein the anterior side straight portions and the posterior side straight portions are symmetrically disposed about an imaginary line which extends through centers of the posterior side bent portion and the anterior side bent portion,
wherein when a maximum distance between an outer edge of an anterior side straight portion of the anterior side straight portions and an outer edge of a corresponding posterior side straight portion of the posterior side straight portions is a width W1, a radius of curvature R2 of the posterior side bent portion is equal to a sum of a radius of curvature R1 of the anterior side bent portion and the width W1, and
wherein the medial side portion is rounded, and a radius of curvature R3 of the medial side portion is equal to or greater than the width W1.