PROBLEM TO BE SOLVED: To provide prosthetic material for skull bone perforation which is rigid, excellent in handleability during operation and prevents occurrence of postoperative biocompatibility or plastic problems.SOLUTION: A shaft part 10, which is inserted and arranged in a drill perforation 5 drilled for making an opening 4 in the skull bone 2, includes: a shaft part body 11 erected from the under surface of an engaging lid part 20 and a claw part 12 which is given elastic force in a shaft direction of the shaft part 10 by contacting the inner surface of the drill perforation 5 while the shaft part 10 is inserted/arranged in the drill perforation 5.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】 堅牢で、手術時の取り扱い性も良好で、手術後の生体適合性や整形上の問題を生じない頭蓋骨穿孔補填材を提供すること。【解決手段】 開口部4を頭蓋骨2に形成する際に穿設されるドリル穿孔5に挿入配置される軸部10は、係止蓋部20の下面から立設された軸部本体11と、前記軸部10をドリル穿孔5内に挿入配置する際におけるドリル穿孔5の内周面との当接により前記軸部10の軸方向の弾性力が付与される爪部12とを備える。【選択図】 図1
