Extendable spinal implant and extension tool

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/44 (2006.01) A61F 2/46 (2006.01)

Patent

CA 2455339

The subject matter of the present invention relates to an extendable spinal implant with a first outer sleeve and a second outer sleeve coaxially disposed thereto and an inside drive element which is connected by means of screws to at least one of the outer sleeves, with the inside drive element comprising a first thread, e.g., an outside thread, and with the outer sleeve that is connected by means of screws to the drive element comprising a second thread, e.g. an inside thread, that fits on the outside thread, with the inside drive element resting on a supporting ring and with the drive element being able to be driven in the area of its front surface that faces the supporting ring.

L'invention concerne un implant vertébral capable de distraction, comportant une première douille extérieure, une deuxième douille extérieure orientée coaxialement par rapport à la première, et un élément d'entraînement intérieur vissé à au moins une des douilles extérieures. L'élément d'entraînement intérieur présente un premier filetage, par ex. un filetage extérieur, et la douille extérieure vissée à l'élément d'entraînement présente un deuxième filetage correspondant au premier, par ex. un filetage intérieur. Par ailleurs, l'élément d'entraînement intérieur s'appuie sur une bague support, et l'élément d'entraînement peut être entraîné sur son côté frontal orienté vers la bague support.

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