| 摘要 |
A keeper for an implant is provided with: (a) a keeper body consisting of a soft magnetic material, the keeper body having a recess which receives the head of an abutment which has a female thread section and also having a female thread section which is provided along the center axis so as to communicate with the recess and which has a greater nominal diameter than the female thread section of the abutment; and (b) a two-stage threaded member having a small-diameter threaded section which engages with the female thread section of the abutment and also having a large-diameter threaded section which engages with the female thread section of the keeper body. The keeper for an implant is characterized in that, when the keeper body is rotated in the engaging direction after the small-diameter threaded section is engaged with the female thread section of the abutment and the large-diameter threaded section is engaged with the female thread section of the keeper body, the keeper body is firmly fastened to the abutment by the two-stage threaded member. |
