Artificial intervertebral disc

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/44 (2006.01) A61F 2/00 (2006.01) A61F 2/30 (2006.01)

Patent

CA 2486623

An artificial intervertebral disc including housing members including spaced inner surfaces facing each other and oppositely facing outer surfaces for engaging spaced apart intervertebral surfaces; self-adjusting bearing mechanisms operatively disposed between the inner surfaces for moving relative to the housing members to adjust and compensate for vertebral disc motion; and positioning ring for controlling motion and position of the bearing mechanisms and for absorption of compressive loads. An artificial intervertebral disc Including housing members having an oval recess on the inner surfaces; oval bearing mechanisms, operatively disposed within the oval recess between the inner surfaces for moving relative to the housing members to adjust and compensate for vertebral disc motion; and oval positioning ring. A spring member for an artificial intervertebral disc including a substantially annular body having an axially extended bore therethrough defining a passageway.

La présente invention se rapporte à un disque intervertébral artificiel à éléments de boîtier incluant des surfaces internes espacées se faisant face et présentant leur face opposée à des surfaces externes de façon à s'engager entre les surfaces intervertébrales espacées; des mécanismes de palier s'ajustant automatiquement disposés de façon à jouer entre les surfaces internes en se déplaçant par rapport aux éléments de boîtier de façon à ajuster et compenser le mouvement des disques intervertébraux; un anneau de positionnement servant à réguler le mouvement et la position des mécanismes de palier, tout en absorbant les charges de compression. Un disque intervertébral artificiel incluant des élément de boîtier munis d'un renfoncement ovale sur leurs surfaces internes; des mécanismes de palier ovales disposés de façon à jouer à l'intérieur des renfoncements ovales qui se trouvent entre les surfaces intérieures pour se déplacer par rapport aux éléments de boîtier afin d'ajuster et de compenser le mouvement des disques intervertébraux; un anneau de positionnement ovale. Un ressort pour disque intervertébral artificiel incluant un corps annulaire muni d'un trou étendu dans le sens axial conçu pour définir un passage.

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