< Topic >Installation and the removal of the fixed screw being easy, furthermore, the locking component of the fixed screw of in plant which can contribute to the locking of the screw conclusion section is offered. SolutionsBeing interposition possible in the mounting hole of the super structure body, it is provided on the surface of screw head side of the cover and the cover which cover the screw head which it exposes in the hole bottom of the mounting hole the knob section which extends with the engagement convex section which imitates in form of the tool engagement section of the screw head and facing toward aperture side of the mounting hole it has, when locking, it makes the engagement convex section which is provided in the cover the tool engagement section of the screw head engage, it assures the locking of the fixed screw with the cover and the knob section and the seal material restoration to mounting hole inner circumference face-to-face. < Choice figure >Drawing 1【課題】固定ねじの装着、取り外しが容易で、しかも、ねじ締結部のゆるみ止めに寄与し得るインプラントの固定ねじのゆるみ止め部材を提供する。【解決手段】上部構造体の取付け穴に挿入可能で、取付け穴の穴底に露出するねじ頭部を覆うカバーと、カバーのねじ頭部側の面に設けられねじ頭部の工具係合部の形状に倣った係合凸部と、取付け穴の開口側に向かって延びるつまみ部とを備え、固定時には、カバーに設けられた係合凸部をねじ頭部の工具係合部に係合させ、カバー及びつまみ部と取付け穴内周面間に充填される封止材によって、固定ねじのゆるみ止めを図る。【選択図】図1
