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 2118562
A bone screw comprises a receiver member (5) and a screw member (1) having a threaded portion (2) and a head (3) having a spherical segment-shaped portion. The receiver member (5) comprises an internal thread (10) for allowing a relative adjustment of receiver member and screw member and the connection of the receiver member with a round rod. A pressure means (12) acts onto the head (3) and the rod (16) is placed on top of the pressure means. The arrangement is locked by means of a rod locking nut (13) and a lock nut (14) is screwed onto an external thread (11).
L'invention porte sur une vis pour os comportant un élément receveur (5) et une vis (1) ayant une partie filetée (2) et une tête (3) présentant une partie sphérique en forme de segment. L'élément receveur (5) comprend un filetage interne (10) permettant de régler de façon relative l'élément receveur et la vis et de relier l'élément receveur à une tige ronde. Un élément de pression (12) agit sur la tête (3), et la tige (16) est placée sur l'élément de pression. La disposition est bloquée au moyen d'un écrou à freinage interne pour tige (13), et un contre-écrou (14) est vissé sur un filetage externe (11).
Biedermann Lutz
Harms Jurgen
Biedermann Motech Gmbh
Goudreau Gage Dubuc
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