A kind of drilling into bone lid arrangement of system of the present invention,Including at least forcing piece on one and once forcing piece forms,Forcing piece has one first base portion and one first engaging portion on this； The lower forcing piece includes at least one second base portion and second engaging portion in conjunction with the first engaging portion； By at least one first arm and at least, one second arm is formed second base portion,The diameter for the big what drilling of total length system that first arm and second arm are formed,And control big the second arm lengths of what of the first arm lengths system； Accordingly,Length configuration can be formed by first arm and second arm,Make the positioning what of first arm and the second arm oblique cutting drilling bottom end,The drilling for reaching any position bone can all cover knot and be applicable in,Very fast simplicity in operation,It can more make drilling that minimum-value aperture be maintained to minimize skeletal structure is destroyed,Separately in fixed cranium in use,More can using first arm and the second arm respectively across top tug cranium and skull,Effectively reach and improves general use scope and efficiency.本發明係一種骨骼鑽孔蓋裝置，至少包含一上迫緊件及一下迫緊件組成，該上迫緊件具有一第一基部及一第一結合部；該下迫緊件至少包含一第二基部及一與第一結合部結合的第二結合部；該第二基部係由至少一第一臂及至少一第二臂所組成，該第一臂與該第二臂所形成之總長度係大於鑽孔之直徑，並控制第一臂長度係大於第二臂長度；據此，能藉由該第一臂及該第二臂形成長短配置，使該第一臂及該第二臂斜插的定位於鑽孔底端，達到任何部位骨骼之鑽孔皆可蓋結適用，操作上非常迅速簡便，更能使鑽孔維持於最小孔徑將破壞骨骼結構降至最低，另在固定頭蓋骨使用時，更能利用該第一臂及第二臂分別橫跨頂掣頭蓋骨及顱骨，有效達到提高通用使用範圍及效能。
