A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 2/36 (2006.01) A61F 2/46 (2006.01) A61F 2/00 (2006.01)
Patent
CA 2515364
What is described is an assembly (10) consisting of a movable neck (1) and a stem (2) for a hip prosthesis, the said movable neck (1) being provided with a tapered part (3) connected in a complementary way to a cavity (4) formed in the said stem (2). In the assembly (10) according to the invention, a through hole (5) is formed in the movable neck (1) or in the stem (2), this hole being orientated and positioned so that, when the tip of a pointed tool (7) with its outer walls (8) converging towards the tip, the opposite sides of these walls bear on a surface (1r) forming part of the movable neck (1) and a surface (2r) forming part of the stem (2), exerting, by the inclined plane effect, a substantially axial force capable of causing the disengagement of the movable neck (1) from the stem (2).
La présente invention se rapporte à un ensemble (10) composé d'un col mobile (1) et d'une tige (2) pour une prothèse de la hanche, ledit col mobile (1) étant pourvu d'une partie conique (3) relié de façon complémentaire à une cavité (4) ménagée dans ladite tige (2). Dans l'ensemble (10) selon l'invention, un trou traversant (5) est ménagé dans le col mobile (1) ou dans la tige (2), ce trou étant orienté et positionné de telle manière que, en présence de la pointe d'un outil pointu (7) dont les parois extérieures (8) convergent en direction de la pointe, les faces opposées de ces parois viennent en appui contre une face (1r) formant partie du col mobile (1) et contre une face (2r) formant partie de la tige (2), ce qui permet d'appliquer par effet de plan incliné un effort sensiblement axial susceptible de provoquer la désolidarisation du col mobile (1) et de la tige (2).
Mariasal Investment N.v.
Robic
LandOfFree
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