A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 17/70 (2006.01) A61F 2/30 (2006.01) A61F 2/44 (2006.01) A61F 2/00 (2006.01) A61F 2/02 (2006.01) A61F 2/28 (2006.01) A61F 2/46 (2006.01)
Patent
CA 2223759
The present invention is directed to a variety of interbody spinal fusion implants (20) having at least a partially frusto-conical configuration. An external thread (28) is employed to increase implant stability and implant surface area, and for the purpose of advancing the spinal fusion implant (20) into the fusion site. The spinal fusion implants (20) of the present invention may be relatively solid or hollow and may have surface roughening to promote bone ingrowth and stability. The spinal fusion implants (20) of the present invention may have wells extending into the material of the implant from the surface for the purpose of holding fusion promoting materials and to provide for areas of bone ingrowth fixation.
Cette invention porte sur diverses arthrodhèses (20) intersomatiques du rachis ayant au moins une configuration partiellement tronconique. On utilise un filetage extérieur (28) pour renforcer la stabilité de l'implant et accroître son aire spécifique ainsi que pour faire avancer l'arthrodèse (20) du rachis à l'intérieur du site de fusion artificielle. Les arthrodhèses (20) selon l'invention peuvent être relativement pleines ou creuses et comporter des rugosités de surface pour favoriser l'interposition osseuse et accroître la stabilité. Elles peuvent comporter des puits s'étendant à l'intérieur du matériau de l'implant depuis sa surface afin de maintenir des matériaux favorisant la fusion artificielle et de créer des zones de fixation de l'interposition osseuse.
Michelson Gary Karlin
Smart & Biggar
Warsaw Orthopedic Inc.
LandOfFree
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