PROBLEM TO BE SOLVED: To provide a surgical bone perforation drill stopper, which does not require outer diameter measurement for tubular bone in advance, ad can control a drill perforation distance by single hand operation in the process of drill operation, and avoid the risk that a drill blade punches through to the deepest part of the back of the bone overenthusiastically.SOLUTION: A drill stopper 1 is put onto a surgical drill 1 for perforating a tubular bone, which has collet chuck mechanisms 52, 56 for detachably holding a drill shaft 100 to transmit rotary drive, and a non-rotation end cap 55 for storing the collet chuck mechanisms. The drill stopper includes: a drill stopper body 2 which covers the end cap 55 of the surgical drill 50, and has an insertion hole 5 for inserting the drill shaft 100 held on the surgical drill 1 a non-rotation cylindrical part 3 which is fixed so as to communicate with the insertion hole 5 of the drill stopper body 2 and into which the drill shaft 100 can be inserted and a drill connecting part 4 for connecting the drill stopper body 2 to the end cap 55.COPYRIGHT: (C)2014,JPO&INPIT【課題】 前もっての管状骨の外径測定を要せず、そのドリル操作途中段階でドリル穿孔距離を片手操作で制御でき、ドリル刃が勢い余って骨の裏側奥深くまで突き抜けるという危険性を回避できる外科用骨穿孔ドリルストッパーを提供する。【解決手段】 ドリルストッパー1は、ドリル軸100を把持着脱し回転駆動を伝えるコレットチャック機構52,56と前記コレットチャック機能を収納する非回転の端部キャップ55を有する管状骨穿孔用の外科用ドリル1に被嵌して設けられる。外科用ドリル50の端部キャップ55を被覆し、前記外科用ドリル1に保持されたドリル軸100を挿通する挿通孔5を有するドリルストッパー本体2と、前記ドリルストッパー本体2の挿通孔5と連通して固定され、前記ドリル軸100を挿通可能な非回転性の筒状部3と、前記ドリルストッパー本体2を端部キャップ55に連結させるドリル連結部4と、を備える。【選択図】 図2
