A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 17/68 (2006.01) A61B 17/70 (2006.01) A61B 17/88 (2006.01) A61F 2/44 (2006.01) A61F 2/46 (2006.01)
Patent
CA 2199637
A fusion cage (20) for anterior vertebral body fusion is comically shaped and includes a rounded distal end (24). A thread (40) is formed as part of the external conical surface of the fusion cage (20). The thread (40) defines one or more flutes (52) which enhance the ability of the fusion cage (20) to be self tapping. Apertures (54, 206, 322) are defined through the fusion cage in order to provide for contact between the engaged vertebral bone structures and bone growth inducing substances packed within the fusion cage. The fusion cage (20) is introduced through an anterior procedure and maintains or increases the lordosis between adjacent vertebral bone structures.
Une cage de fusion (20) pour la fusion d'un corps vertébral antérieur a une forme conique et comprend une extrémité distale arrondie (24). Un filetage (40) fait partie de la surface conique externe de la cage de fusion (20). Le filetage (40) définit une ou plusieurs rainures (52) qui facilient et améliorent l'autofixation de la cage de fusion (20). Des ouvertures (54, 206, 322) sont ménagées au travers de la cage de fusion afin d'établir une communication entre les structures osseuses vertébrales engagées et des substances générant la croissance osseuse et contenues dans la cage de fusion. La cage de fusion (20) est introduite par un processus antérieur et maintient ou augmente la lordose entre les structures osseuses vertébrales adjacentes.
Jayne Kirk
Klyce Henry A.
Pavlov Paul W.
Winslow Charles J.
Howmedica Osteonics Corp.
Mcfadden Fincham
Surgical Dynamics Inc.
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