Patent ID: 6120507
Filing Date: 2000-09-19
Classification: A61B,A61F

Abstract:
A counter bore reamer for preparing a resected surface of a bone to receive a stemmed implant, the bone having an intramedullary canal, the implant having a collar with a major dimension and a thickness, the reamer comprising:a body configured for mounting in said intramedullary canal adjacent said resected surface of said bone; anda blade mounted for rotation on the body, the body supporting the blade in cutting relation to said resected surface of said bone, the blade having on one side a tooth pattern directed toward the body with outer cutting tips and a diameter greater than or equal to said major dimension of said implant collar wherein rotation of the blade relative to the body is operative to cut a counter bore into said resected bone surface for receiving said implant collar, the reamer further comprising means for limiting the depth that the reamer blade penetrates into said bone, wherein the means for limiting the depth comprises a shoulder extending radially from the base of the tooth pattern.