Driver and method

摘要

A driver assembly for driving a dental implant into an implantation site comprises a driver assembly and an abutment assembly. The lower portion of the driver assembly accommodates the upper portion of the abutment assembly in a rotation-preventing manner so as to prevent relative rotation between the driver assembly and the abutment assembly. In addition, the driver assembly includes a weakened section which permits the upper portion thereof to be separated from the lower portion and discarded while the lower portion remains mounted upon the abutment assembly.

主权项

1. A driving assembly for mounting a dental implant within an implantation site, comprising:
an abutment assembly comprising an upper portion having a flat face formed thereon, and a lower portion adapted to be operatively connected to an implant so as to impress rotary torque upon the implant in order to implant the implant within an implant site; and a driver assembly defined around a longitudinal axis and having an upper driver portion, a lower driver portion having a cavity, defined by a first blind bore formed within said lower driver portion, for accommodating said upper portion of said abutment assembly, said cavity of said lower portion of said driver assembly having a flat step formed therein for mating with said flat face of said upper portion of said abutment assembly so as to effectively prevent relative rotation between said driver assembly and said abutment assembly whereby the implant can be implanted within the implant site as a result of rotational torque being transmitted from said driver assembly to said abutment assembly and from said abutment assembly to the implant, an annular groove, defined around an external portion of said driver assembly which is located at an axial position interposed between said upper driver portion and said lower driver portion, and a second blind bore defined within said upper driver portion and extending up to said axial position at which said external annular groove is defined so as to effectively define, with said external annular groove, an annular weakened stem having a decreased outer diameter and a decreased wall thickness relative to said upper and lower driver portions by means of which said upper driver portion of said driver assembly is separable from said lower driver portion of said driver assembly so as to be discarded while said lower driver portion of said driver assembly is retained upon said upper portion of said abutment assembly connected to the implant.