Patent ID: 6887275
Filing Date: 2005-05-03
Classification: A61B

Abstract:
1. A maxillofacial anchoring and distraction system comprising an anchoring screw body having upper and lower sides and having a longitudinal axis and having a longitudinally extending threaded bore extending through the anchoring screw body from the upper side to the lower side, the anchoring screw body having an external bone screw thread, an elongated generally cylindrical member having head and distal ends and a longitudinal axis, an externally threaded portion for threaded engagement in the threaded bore of the anchoring screw body, the generally cylindrical member being capable of being inserted in the bore of the anchoring screw body with the distal end inserted from the upper side and so that the distal end can extend out of the threaded bore beyond the lower side of the anchoring screw body with the generally cylindrical member being removable through the upper side upon completion of distraction, the head end including a driving surface, and the distal end having a distraction force transferring surface, and a reaction element having a flat surface portion for engagement with the distraction force transferring surface of the distal end of the generally cylindrical member when the cylindrical member is in threaded engagement with the anchoring screw body, the flat surface portion serving as an engagement surface to distract against when the reaction element is placed in a horizontally extending osteotomy in a bone with the flat surface portion of the reaction element generally perpendicular relative to the longitudinal axis of the anchoring screw body and the elongated generally cylindrical member, the reaction element comprising a relatively wide mesh body having a plurality of holes formed therethrough and a narrow, relative to the mesh body, solid tip portion extending from the body, the tip portion provided with the flat surface portion.