PROBLEM TO BE SOLVED: To provide a joint plate which enables a screw for a bone to be screwed in by selecting a free angle on a job site without presetting a screw-in angle, which can maintain contact between the joint plate and the bone without compressing the bone and which includes a looseness stop device, and a spherical socket.SOLUTION: So that a bone joint screw capable of being positioned can be easily and removably fixed to a bone joint plate or a similar implant while being brought into a basically immobile state, a spherical socket is inserted into a spherical seat of the bone joint plate by an expanding slot of a head, and a free oscillation angle is selected. Subsequently, the spherical socket is expanded by a special taper screw configuration made in the head of the joint screw, and the joint plate and the bone joint screw are fixed without looseness.COPYRIGHT: (C)2014,JPO&INPIT【課題】予めねじ込み角度を設定しないで、現場で自由角度を選択して骨用ねじをねじ込みでき、骨に圧迫を掛けずに接合プレートと骨との接触を保持できて緩み止めの装置を備える接合プレートと球面ソケットを提供すること。【解決手段】位置決めできる骨用接合ねじを、骨接合プレートまたは類似のインプラントに、基本的に動かないように、しかしながら容易かつ取り外し可能に固定できるようにするために、頭部の割溝により球状ソケットを骨接合プレートの球面座に挿入して自由な首振り角度を選択した後で、接合ねじ頭部に作られる特殊テーパーねじ構成で球状ソケットを広げて、接合プレートと骨用接合ねじを緩みなく固定することを特徴とする。【選択図】図2
