US 12,350,159 B2
Optimized cage systems promoting bone repair and fusion
Nir Altschuler, Tsur Yitskhak (IL)
Assigned to CARTIHEAL (2009) LTD., Kfar Saba (IL)
Appl. No. 17/275,739
Filed by CARTIHEAL (2009) LTD., Kfar Saba (IL)
PCT Filed Sep. 15, 2019, PCT No. PCT/IL2019/051030
§ 371(c)(1), (2) Date Mar. 12, 2021,
PCT Pub. No. WO2020/053867, PCT Pub. Date Mar. 19, 2020.
Claims priority of application No. 261820 (IL), filed on Sep. 16, 2018.
Prior Publication US 2022/0054271 A1, Feb. 24, 2022
Int. Cl. A61F 2/44 (2006.01); A61B 17/68 (2006.01); A61F 2/08 (2006.01); A61F 2/30 (2006.01); A61F 2/46 (2006.01)
CPC A61F 2/30 (2013.01) [A61B 17/68 (2013.01); A61F 2/08 (2013.01); A61B 2017/681 (2013.01); A61F 2002/30622 (2013.01); A61F 2002/30754 (2013.01); A61F 2002/3093 (2013.01); A61F 2/4455 (2013.01); A61F 2002/4632 (2013.01); A61F 2310/00341 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An intervertebral fusion device adapted to form a rigid structure between a first vertebra and a second vertebra, the intervertebral fusion device comprising:
a cage frame defined by a plurality of cage frame elements including a top cage frame element sized and configured to engage the first vertebra, a bottom cage frame element sized and configured to engage the second vertebra, an anterior cage frame element, a posterior cage frame element, and one or more lateral cage frame elements, the top cage frame element adapted to be load bearing for the first vertebra, the bottom cage frame element adapted to be load bearing for the second vertebra; the posterior cage frame element including an opening to receive a bone growth promoting material;
each of the plurality of cage frame elements having a peripheral edge contoured to not be sharp along its entire length;
at least one of the top and bottom cage frame elements includes a plurality of ridges to engage a surface of an adjacent vertebrae, and the ridges are spaced from peripheral edges of the cage frame element;
a bone growth promoting material disposed within the cage frame through said opening of the posterior cage frame element, the bone growth promoting material comprising:
a solid block having a shape complementary to an internal chamber of the cage frame, the solid block having an outer surface; and
a plurality of grooves formed within the outer surface, at least some of the plurality of grooves complementary to and adapted to accommodate at least some of the plurality of cage frame elements therein such that the outer surface of the bone growth promoting material is neither protruding nor recessed with respect to at least some of the plurality of cage frame elements;
wherein the bone growth promoting material comprises one or more solid coral pieces, or ground coralline-based material pieces or a combination thereof,
wherein the bone growth promoting material is characterized by a specific fluid uptake capacity value of at least 75%.