A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 17/86 (2006.01) A61F 2/44 (2006.01)
Patent
CA 2699866
A medical implant assembly includes a polyaxial bone anchor having a shank, a receiver, a lower compression insert with planar surfaces for closely receiving an elongate connecting member with planar surfaces and a one-piece closure structure. The connecting member is made from a polymer. The closure structure engages both the connecting member and the insert with the engagement between the closure structure and the insert securely locking the polyaxial mechanism even if the connecting member exhibits creep.
L'invention porte sur un ensemble d'implant médical qui comprend un dispositif d'ancrage d'os poly-axial comportant une tige, une partie de réception, un insert de compression inférieur doté de surfaces planes destinées à recevoir étroitement un élément de liaison allongé ayant des surfaces planes et une structure de fermeture d'une seule pièce. L'élément de liaison est réalisé à partir d'un polymère. La structure de fermeture met en prise à la fois l'élément de liaison et l'insert, la mise en prise entre la structure de fermeture et l'insert verrouillant de manière sûre le mécanisme poly-axial, même si l'élément de liaison présente du jeu.
Fetherstonhaugh & Co.
Jackson Roger P.
LandOfFree
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