Interspinal prosthesis

A - Human Necessities – 61 – B

Patent

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A61B 17/70 (2006.01)

Patent

CA 2495119

An interspinal prosthesis (1) comprising a middle piece (2) which can be introduced into the interspinal area and which has a center axis (4), an inner end (7) and an outer end (8) in addition to two extensions (3) extending radially and diametrically with respect to the center axis (4), originating from the outer end (8), said extensions being able to be introduced into the interspinal area of two adjacent bodies of the vertebra. The inner end (7) of the middle piece (2) opposite the extensions (3) has an axial recess (5) for receiving a counter piece (6) which is substantially symmetrical with respect to the prosthesis (1).

La présente invention concerne une prothèse intervertébrale (1) comprenant: une partie intermédiaire (2) qui être introduite dans un espace intervertébral et qui comprend un axe central (4), une extrémité interne (7) et une extrémité externe (8); et deux prolongements (3) qui partent de l'extrémité externe (8), s'étendent radialement et diamétralement par rapport à l'axe central (4), et peuvent être introduits dans l'espace compris entre les apophyses épineuses de deux vertèbres voisines. Selon l'invention, la partie intermédiaire (2) présente à son extrémité interne (7) opposée aux apophyses (3), une cavité axiale (5) destinée à recevoir une contre-pièce (6) sensiblement symétrique par rapport à la prothèse (1).

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