US 12,257,158 B2
Interbody fusion cages
Curt Freudenberger, Huntsville, AL (US)
Assigned to Mobarn Medical, LLC
Filed by Mobarn Medical Devices, LLC, New Orleans, LA (US)
Filed on Mar. 26, 2024, as Appl. No. 18/617,464.
Application 18/617,464 is a continuation of application No. 17/203,225, filed on Mar. 16, 2021, granted, now 11,938,038.
Application 17/203,225 is a continuation of application No. 17/202,833, filed on Mar. 16, 2021, granted, now 11,974,928.
Application 17/202,833 is a continuation of application No. 16/304,430, granted, now 10,952,869, issued on Mar. 23, 2021, previously published as PCT/US2017/034883, filed on May 27, 2017.
Claims priority of provisional application 62/342,572, filed on May 27, 2016.
Prior Publication US 2024/0225853 A1, Jul. 11, 2024
Int. Cl. A61F 2/44 (2006.01); A61F 2/28 (2006.01); A61F 2/30 (2006.01); A61F 2/46 (2006.01)
CPC A61F 2/4465 (2013.01) [A61F 2/28 (2013.01); A61F 2/2846 (2013.01); A61F 2/30744 (2013.01); A61F 2/4455 (2013.01); A61F 2/4601 (2013.01); A61F 2002/30179 (2013.01); A61F 2002/302 (2013.01); A61F 2002/30405 (2013.01); A61F 2002/305 (2013.01); A61F 2002/30578 (2013.01); A61F 2002/30593 (2013.01); A61F 2002/30904 (2013.01); A61F 2002/3093 (2013.01); A61F 2310/00023 (2013.01); A61F 2310/00029 (2013.01); A61F 2310/00359 (2013.01); A61F 2310/00407 (2013.01); A61F 2310/00413 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for enhancing spinal fusion in adjacent vertebrae of a patient through maximal bone graft material placement, the method comprising:
providing an implant device for interbody fusion of lumbar or cervical vertebrae, the implant device comprising:
a unibody cage structure having an enveloping cage volume and a minimized material volume, the cage structure comprising
a first and a second generally planar ring member, each ring member formed from an opposing pair of lengthwise joists and an opposing pair of cross joists, the joists together forming a large opening through the ring member,
the ring members fixedly sandwiched on a plurality of support members, the support members holding the ring members in a spaced apart relationship to thereby provide a large void volume relative to the enveloping cage volume, to thereby allow for receipt of a large volume of bone graft within the cage structure,
wherein a ratio of the void volume to the enveloping cage volume is between about 0.7 to about 0.9; and
inserting the implant between said adjacent vertebrae of said patient.