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 2579147

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).

L'invention concerne des systèmes et procédés qui comportent un élément de plaque (120, 140, 160, 180, 600) pouvant venir en prise avec la colonne vertébrale au moyen d'un ensemble d'ancrage (20, 320, 420, 520, 620, 720), lequel comporte un élément de couplage (30, 130, 330, 430, 530, 630) ayant un support (32, 332, 432, 532, 632, 732) traversant au moins une ouverture de l'élément de plaque (120, 140, 160, 180, 600) et un élément d'ancrage (70) capturé pivotant dans une partie réceptrice (34, 334, 434, 534, 634) de l'élément de couplage (30, 130, 330, 430, 530, 630) sous une surface inférieur de l'élément de plaque (120, 140, 160, 180, 600). Un élément de verrouillage (90, 590) fixe l'élément de plaque (120, 140, 160, 180, 600) à l'élément de couplage (30, 130, 330, 430, 530, 630). Une couronne (50, 150, 250, 350, 550, 650) dans la partie réceptrice (34, 334, 434, 534, 634) de l'élément de couplage (30, 130, 330, 430, 530, 630) vient en prise avec l'élément de plaque (120, 140, 160, 180, 600) pour fixer l'élément d'ancrage (70) en place par rapport à l'élément de couplage (30, 130, 330, 430, 530, 630).

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