Spinous process implants and associated methods

A - Human Necessities – 61 – B

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A61B 17/70 (2006.01) A61F 2/44 (2006.01)

Patent

CA 2675182

Spinous process implants and associated methods are provided. In one aspect of the invention the implant limits the maximum spacing between the spinous processes. In another aspect of the invention, a spacer has at least one transverse opening to facilitate tissue in-growth. In another aspect of the invention, an implant includes a spacer and separate extensions engageable with the spacer. The spacer is provided in a variety of lengths and superior to inferior surface spacings. In another aspect of the invention, an implant includes a spacer and a cerclage element offset from the midline of the spacer in use so that the spacer defines a fulcrum and the cerclage element is operative to impart a moment to the vertebrae about the spacer. In another aspect of the invention, instrumentation for inserting the implant is provided. In other aspects of the invention, methods for treating spine disease are provided.

L'invention concerne des implants pour apophyse épineuse et des procédés associés. Selon un aspect de l'invention, l'implant limite l'espacement maximal entre les apophyses épineuses. Selon un autre aspect de l'invention, un espaceur comprend au moins une ouverture transversale destinée à faciliter la croissance du tissu. Selon un autre aspect de l'invention, un implant comprend un espaceur et des extensions distinctes pouvant s'engager avec l'espaceur. L'espaceur peut présenter diverses longueurs et des espacements de surface supérieurs à inférieurs. Selon un autre aspect de l'invention, un implant comprend un espaceur et un élément de cerclage désaxé de la ligne médiane de l'espaceur lors de son utilisation, de manière à ce que l'espaceur définisse un point d'appui et que l'élément de cerclage puisse être utilisé pour conférer un moment aux vertèbres autour de l'espaceur. Selon un autre aspect, l'invention concerne une instrumentation destinée à insérer l'implant. Selon d'autres aspects, l'invention concerne des procédés de traitement d'une maladie de la colonne vertébrale.

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