Rod contouring apparatus and method for percutaneous pedicle...

A - Human Necessities – 61 – B

Patent

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A61B 17/88 (2006.01)

Patent

CA 2637684

Anatomic points within the body are projected outside the body through the use of extenders (180, 182, 188). The projected points may then be used for measurement, or to facilitate the selection or configuration of an implant that is positioned proximate the anatomic points using a slotted cannula (143). Such an implant may be a rod (270) for a posterior spinal fusion system. Pedicle screws (140, 142, 148) may be implanted into pedicles of the spine, and may then serve as anchors for the extenders. The extenders (180, 182, 188) may have rod interfaces (214, 216, 218) that receive the rod (270) in a manner that mimics the geometry of the pedicle screws (140, 142, 148) so that the selected or configured contoured rod (270) will properly fit into engagement with the pedicle screws (140, 142, 148).

L'invention concerne des points anatomiques du corps projetés à l'extérieur du corps à l'aide de prolongateurs (180,182,188). Les points projetés peuvent être ensuite utilisés pour une mesure, ou pour faciliter la sélection ou la configuration d'un implant qui est positionné à proximité des points anatomiques au moyen d'une canule fendue (143). Un tel implant peut être une tige (270) pour un système de fusion vertébrale postérieure. Des vis pédiculaires (140,142,148) peuvent être implantées dans des pédicules vertébraux, et peuvent ensuite servir d'ancres aux prolongateurs.Les prolongateurs (180,182,188) peuvent avoir des interfaces de tige (214,216,218) qui reçoivent la tige (270) d'une manière qui imite la géométrie des vis pédiculaires (140,142,148) afin que la tige façonnée (270) sélectionnée ou configurée s'ajuste correctement avec les vis pédiculaires (140,142,148).

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