Rotating, locking, spring-loaded artificial disk

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/44 (2006.01)

Patent

CA 2560237

A rotating, locking, spring-loaded disk implant for stabilizing adjacent vertebrae. The implant (22) is substantially rectangular in cross-sectional shape with minimal height and maximal width. The implant is inserted into the space between two adjacent vertebrae from which a portion of the intervertebral disk has been removed and, when positioned in the disk space, rotated to bring the sides of the rectangularly-shaped implant defining the width of the implant, with its larger dimension, into engagement with the bodies of the adjacent vertebrae. A portion (56) of the implant is biased away from the implant and into contact with the adjacent vertebrae to provide a cushioning effect between the implant and the vertebra. A lock (24) is then secured to the implant to resist further rotation of the implant in the disk space.

L'invention concerne un implant de disque rotatif verrouillable à ressort destiné à stabiliser des vertèbres adjacentes. L'implant (22) est sensiblement rectangulaire dans sa coupe transversale avec une hauteur minimale et une largeur maximale. L'implant est inséré dans l'espace entre deux vertèbres adjacentes d'où a été retirée une partie du disque intervertébral et, lorsqu'il est positionné dans l'espace discal, effectue un mouvement de rotation de manière que les côtés de l'implant rectangulaire définissant la largeur de l'implant par sa plus grande dimension viennent en contact avec les vertèbres adjacentes. Une partie (56) de l'implant est séparée de l'implant et vient en contact avec les vertèbres adjacentes afin d'obtenir un effet amortisseur entre l'implant et la vertèbre. Un verrou (24) est alors fixé à l'implant pour empêcher tout autre rotation de l'implant dans l'espace discal.

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