A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 2/44 (2006.01) A61F 2/46 (2006.01)
Patent
CA 2690550
A nucleus prosthesis is disclosed having a plurality of linked segments configured to form, in a closed position, a disc shape. A method includes inserting a plurality of linked segments into an annulus fibrosus and closing the prosthesis so that a first segment inserted into the annulus fibrosus and a last segment inserted into the annulus fibrosus are substantially abutted. Another method includes inserting a plurality of linked segments into an intervertebral disc space and closing the prosthesis so that a first segment inserted into the intervertebral disc space and a last segment inserted into the intervertebral disc space are substantially abutted. A nucleus prosthesis (30) comprising a plurality of segments (32), including a leading segment and a trailing segment, and at least a linkage (34) coupling the segments, the prosthesis having an open position in which the segments are disposed along the linkage in a serial line with the leading segment at an end of the serial line and the trailing segment at another end of the serial line; and a closed position in which the segments are disposed to form a disc shape with the leading segment and the trailing segment substantially apposed. The linkage between the segments is a hinge (34a) coupling and freely articulating the segments so as to facilitate the opening and closing of the nucleus prosthesis.
L'invention concerne une prothèse de noyau ayant plusieurs segments liés et configurés pour former, dans une position fermée, une forme de disque. L'invention concerne également un procédé qui comprend l'introduction de plusieurs segments liés dans un anneau fibreux et la fermeture de la prothèse de telle sorte qu'un premier segment introduit dans l'anneau fibreux et un dernier segment introduit dans l'anneau fibreux sont sensiblement bout à bout. L'invention concerne également un autre procédé qui comprend l'introduction de plusieurs segments liés dans un espace de disque intervertébral et la fermeture de la prothèse de telle sorte qu'un premier segment introduit dans l'espace de disque intervertébral et un dernier segment introduit dans l'espace de disque intervertébral sont sensiblement bout à bout.
Allain Jerome
Dufour Henry
Vila Thierry
Ldr Medical
Sim & Mcburney
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