Joint-endoprosthesis and fixation method for the seat thereof

A - Human Necessities – 61 – F

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A61F 2/30 (2006.01) A61F 2/02 (2006.01) A61N 7/00 (2006.01) A61F 2/00 (2006.01) A61F 2/28 (2006.01) A61F 2/36 (2006.01)

Patent

CA 2337854

The invention relates to a joint-endoprosthesis and a method for fixing the seat thereof. The endoprosthesis has a shaft (1) that is anchored in the marrow cavity (2) of a tubular bone (4), and an ultrasound source (5) that is placed in or on the shaft (1) and whose radiation characteristics enable the ultrasound waves to reach the gap (6) between the spongiosa (8) of the tubular bone and the surface of the external covering (7) of the shaft (1). The associated method consists in impinging ultrasound waves upon said gap (6).

L'invention concerne une endoprothèse d'articulation et un procédé de fixation de son siège. L'endoprothèse présente une tige (1) qui est ancrée dans la zone de la moëlle (2) d'un os tubulaire (4), et une source d'ultrasons (5) qui est placée sur ou dans la tige (1) et dont les caractéristiques de rayonnement sont conçues de telle façon que les ondes d'ultrasons atteignent une fente (6) située entre la zone spongieuse (8) de l'os tubulaire (4) et la surface de l'enveloppe extérieure (7) de la tige (1). Le procédé associé consiste à alimenter la fente (6) en ondes ultrasons.

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