A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 2/44 (2006.01) A61F 2/30 (2006.01) A61B 17/02 (2006.01) A61F 2/00 (2006.01) A61F 2/46 (2006.01)
Patent
CA 2289559
The invention concerns a implant comprising first and second elements (20a, 20b) supporting subjacent and superjacent vertebral plates, means (13a, 13b, 23) retaining said support elements one above the other and at least a mobile member (30a, 30b) for varying the distance between the two support elements. The invention is characterised in that the retaining means comprise at least sliding means (13a, 13b, 23) provided between the two support elements, and the or each mobile member consists of a cam with discrete positions (30a, 30b) driven in rotation about a substantially horizontal axis substantially parallel to the saggital plane. The invention is useful for replacing a body of vertebrae in backbone surgery.
Un implant comprend des premier et second éléments d'appui (20a, 20b) contre des plateaux vertébraux sus- et sous-jacents, des moyens (13a, 13b, 23) pour retenir les deux éléments d'appui l'un au-dessus de l'autre et au moins un organe mobile (30a, 30b) apte à faire varier la distance entre les deux éléments d'appui. Selon l'invention, les moyens de retenue comprennent au moins des moyens à glissière (13a, 13b, 23) prévus entre les deux éléments d'appui, et le ou chaque organe mobile est constitué par une came à positions discrètes (30a, 30b) apte à être entraînée en rotation autour d'un axe essentiellement horizontal et essentiellement parallèle au plan sagittal. Application au remplacement d'un corps vertébral en chirurgie du rachis.
Crozet Yves
Mangione Paolo
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Stryker France
Stryker France S.a.
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