A retention system for maintaining a screw to a vertebral plate. One or more screws extend through apertures within the vertebral plate. A cavity is positioned adjacent to and overlaps into the aperture. A ring is positioned within the cavity and held in position by a cap. The cap attaches to the plate...http://www.google.fr/patents/US20050283152?utm_source=gb-gplus-shareBrevet US20050283152 - Method and apparatus for retaining screws in a plate
Method and apparatus for retaining screws in a plate
Numéro de demande: 10/870,026 Numéro de publication: US 2005/0283152 A1 Date de dépôt: 17 juin 2004 Brevet délivré: US7727266 ( Date de délivrance 1 juin 2010)
