Patent ID: 7309231
Filing Date: 2007-12-18
Classification: A61C

Abstract:
1. An implant for a tightly fitting prosthesis, said implant comprising: an externally threaded implant body having a coronal portion and an external thread, the implant body intended to be screwed directly into bone through the use of the external thread using an insertion tool, the body being provided with an internal open ended axial bore having an indexing region comprising a positive connection region at the open end of the bore, wherein the positive connection region comprises a connection to support a spacer and for connection to the insertion tool, the positive connection region having means for cooperating with the spacer and the insertion tool to prevent twisting between the spacer and the implant body or the insertion tool and the implant body, wherein the indexing region also comprises a cylindrical guidance and centering region for guiding and centering a plug portion of the spacer during connection of the spacer to and retention within the implant body, the guidance and centering region being located between the positive connection region and an internally threaded region of said axial bore; wherein the axial length of the indexing region extends within the coronal portion and does not overlap with the external thread; and wherein the indexing region comprises a plurality of axially extending grooves and ridges for cooperation with the insertion tool to permit the insertion tool to provide a carrying function for positioning the implant.