| 摘要 |
<p>PURPOSE: To take up a screw joint into an artificial root of tooth without giving the stress to the tissue, by installing an arm-shaped second part connected with a first part, and comprising a mutual action part with a fixed part of a taking-up tool, for preventing the rotary motion. CONSTITUTION: A device 5 comprises a tubular part 6 and a fork-shaped part 7, a bottom of the tubular part 6 is connected with an element, a drill is penetrated through the part 6, and the fork-shaped part 7 is mutually acted with a handle piece 1. The device 5 acts as a holder when a screw joint is taken up, and the taking-up torque does not give the stress to a bone through a fixture, because of the mutual action of the fork-shaped part 7 and the hand piece 1. The rotation of a spacer and the fixture are preferably prevented by the leg parts of the fork-shaped part. An inner space 8 is installed at a lower part of the tubular part 6, and an inside hole 9 has a diameter large enough for a screw driver tool of the drill to be freely rotated. A support for the hand piece of the drill, is formed at the lower part 11 of the fork, and the leg parts 10, 10' have the length longer than the diameter of the hand piece.</p> |
