Multi-axial anchor assemblies for spinal implants and methods

Details Multi-axial anchor assemblies for spinal implants and methods Multi-axial anchor assemblies for spinal implants and methods

A - Human Necessities

61

B

A61B 17/70 (2006.01) A61B 17/80 (2006.01) A61B 17/86 (2006.01) A61B 17/88 (2006.01)

Patent

CA 2605875

Systems and methods are provided that include a plate member (120, 140, 160, 180, 600) engageable to the spinal column with an anchor assembly (20, 320, 420, 520, 620, 720). The anchor assembly (20, 320, 420, 520, 620, 720) includes a coupling member (30, 130, 330, 430, 530, 630) having a post (32, 332, 432, 532, 632, 732) extending through at least one opening of the plate member (120, 140, 160, 180, 600) and an anchor member (70) pivotally captured in a receiver portion (34, 334, 434, 534, 634) of the coupling member (30, 130, 330, 430, 530, 630) below a lower surface of the plate member (120, 140, 160, 180, 600). A locking member (90, 590) secures the plate member (120, 140, 160, 180, 600) to the coupling member (30, 130, 330, 430, 530, 630). A crown (50, 150, 250, 350, 550, 650) in the receiver portion (34, 334, 434, 534, 634) of the coupling member (30, 130, 330, 430, 530, 630) is engaged by the plate member (120, 140, 160, 180, 600) to secure the anchor member (70) in position relative to the coupling member (30, 130, 330, 430, 530, 630).

La présente invention concerne des systèmes et des procédés qui comprennent un élément plaque (120, 140, 160, 180, 600) pouvant être en contact avec la colonne vertébrale et un ensemble d'ancrage (20, 320, 420, 520, 620, 720). L'ensemble d'ancrage (20, 320, 420, 520, 620, 720) comprend un élément de couplage (30, 130, 330, 430, 530, 630) comportant une tige (32, 332, 432, 532, 632, 732) passant au travers d'au moins une ouverture de l'élément plaque (120, 140, 160, 180, 600) et un élément d'ancrage (70) pris pivotant dans une partie réceptrice (34, 334, 434, 534, 634) de l'élément de couplage (30, 130, 330, 430, 530, 630) en dessous d'une surface inférieure de l'élément plaque (120, 140, 160, 180, 600). Un élément de verrouillage (90, 590) fixe élément plaque (120, 140, 160, 180, 600) à l'élément de couplage. Une couronne (50, 150, 250, 350, 550, 650) située dans la partie réceptrice (34, 334, 434, 534, 634) de l'élément de couplage (30, 130, 330, 430, 530, 630) est en prise avec l'élément plaque (120, 140, 160, 180, 600) pour maintenir l'élément d'ancrage (70) en position par rapport à l'élément de couplage (30, 130, 330, 430, 530, 630).

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