A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 17/58 (2006.01) A61B 17/70 (2006.01) A61B 17/86 (2006.01)
Patent
CA 2124840
An anchoring member is provided which comprises a shaft 2 to be fastened to a bone and a head 3 for connection with a rod 10, the head having a substantially U-shaped cross-section and being connected with the shaft 2 at the base 5 thereof, the head further comprising two free legs 6, 7 defining a channel 4 for receiving the rod 10. The free legs 6, 7 are provided with an internal thread 8 extending in direction of the legs. A fastening member 11 and a member 12 embracing the legs at the outside thereof are provided. In order to allow not only straight rods, but also curved rods to be received and thus to allow an individual adaptation to the conditions of the spinal column to be treated the free legs have an external thread 9 and the member 12 has an internal thread cooperating therewith. The fastening member 11 comprises a thread cooperating with the internal thread 8 to allow the fastening member to be screwed in.
Élément d'ancrage comportant un axe fileté (2) destiné à être fixé à un os, et une tête (3) venant en prise avec une tige (10), la tête présentant une coupe transversale en forme de U et venant en contact avec l'axe fileté (2) par sa partie inférieure (5); la tête comporte en outre deux pattes (6 et 7) définissant un passage (4) pour loger la tige (10). Les pattes (6 et 7) comportent un filetage intérieur (8) sur toute leur longueur. Un organe de fixation (11) couplé à un organe complémentaire (12) entourent les pattes. Afin de permettre l'utilisation non seulement de tiges droites, mais aussi de tiges incurvées pour adapter l'appareil aux conditions spécifiques de la colonne vertébrale à traiter, les pattes sont dotées d'un filetage extérieur (9) qui vient en coopération avec le filetage intérieur de l'organe complémentaire (12). L'organe de fixation (11) est doté d'un filetage qui vient en coopération avec le filetage intérieur (8) permettant de visser celui-ci.
Biedermann Lutz
Harms Jurgen
Shufflebarger Harry L.
Biedermann Motech Gmbh
Goudreau Gage Dubuc
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