Components for threading of bone

摘要

In certain embodiments, a combination of a thread forming tool and an implant is disclosed. The thread forming tool can have a thread forming section with a helical thread having at least one cutting surface for cutting a thread in bone. The implant can include a bone apposition surface having at least one helical thread for position at least partially in the thread of the bone. A longitudinal cross-sectional shape of at least a portion of the helical thread of the thread forming section in certain embodiments, substantially corresponds to a longitudinal cross-sectional shape of at least a portion of the helical thread of the implant.

主权项

1. A combination of a thread forming tool and an implant for placing the implant in a jawbone or for oral or cranio-maxillofacial implant placement, the combination comprising:
the thread forming tool comprising, at an apical end of the tool, a thread forming section with a helical thread having at least one cutting surface for cutting a thread in bone, the helical thread of the thread forming section comprising a plurality of crests and roots; the implant comprising a bone apposition surface having at least one helical thread for position at least partially in the thread of the bone, the helical thread of the bone apposition surface comprising a plurality of crests and roots, wherein a longitudinal cross-sectional shape of at least a portion of the helical thread of the thread forming section substantially corresponds to a longitudinal cross-sectional shape of at least a portion of the helical thread of the implant; a drill; and a guide sleeve for a surgical template, wherein a dimension of said cross-sectional shape of the helical thread of the thread forming section is smaller than a corresponding dimension of said cross-sectional shape of the helical thread of the implant, wherein the crests or the roots of the thread forming section are tapering outwardly relative to the central longitudinal axis of the tool from an apical end of the thread forming section towards a coronal end for substantially all of the thread forming section, and the crests or the roots of the bone apposition surface of the implant are tapering outwardly relative to the central longitudinal axis of the implant from an apical end of the implant towards a coronal end for substantially all of the bone apposition surface of the implant, wherein a maximum diameter of an apical portion at one of the plurality of crests of the bone apposition surface is larger than a maximum diameter of an apical portion at one of the plurality of crests of the thread forming section of the thread forming tool, and smaller than a coronal portion of the thread forming section of the thread forming tool, wherein the guide sleeve has a guide surface on an inner surface of the guide sleeve for guiding the thread forming tool, wherein the drill has at least one cutting edge on an apical section and a coronal section, wherein the thread forming tool has a guide section for guidance by the guide surface of the guide sleeve, and wherein the maximum diameter of the apical portion of the thread forming section is smaller than or equal to a maximum diameter of the cutting edge of the drill.