PROBLEM TO BE SOLVED: To provide a surgical bone boring drill stopper for a tubular bone, usable for a general-purpose drill and capable of preventing excessive intrusion with high accuracy when boring.SOLUTION: A drill stopper 1 is provided fitted to a shaft-like drill blade 100 and used for an operation for boring through-holes in the front side bone cortex 113 and opposite side bone cortex 114 of a tubular bone. The drill stopper 1 includes an inner cylinder part 2 having a drill insertion hole 6 that can insert the drill blade 100 an outer cylinder part 3 that can insert the tip side of the inner cylinder part telescopically into an inner cylinder insertion hole 15 allowing the coaxial insertion of the inner cylinder part 2 a fixing mechanism 7a provided in the rear position of the inner cylinder part 2 to fix the inner cylinder part to a shaft of the drill blade inserted in the drill insertion hole and a holding mechanism 11 holding the outer cylinder part and the inner cylinder part so that a distance L between the tip of the outer cylinder part 23 and the front side bone cortex 113 is equal to the thickness dimension of the opposite side bone cortex 114 in a state of the drill blade tip abutting on the inner wall surface of the opposite side bone cortex.COPYRIGHT: (C)2013,JPO&INPIT【課題】 汎用のドリルに用いることができ、穿孔時に高精度に過侵入を防止することができる管状骨の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、軸状のドリル刃100に被嵌して設けられ、管状骨の手前側骨皮質113及び対側骨皮質114に貫通孔を穿孔する施術に用いられる。ドリル刃100を挿入可能なドリル挿通孔6を有する内筒部2と、前記内筒部2を同軸に挿入可能な内筒挿入孔15に前記内筒部の先端側を伸縮自在に挿入可能な外筒部3と、前記内筒部2の後方位置に設けられ、前記ドリル挿通孔に挿入されたドリル刃の軸に前記内筒部を固定する固定機構7aと、前記対側骨皮質の内壁面にドリル刃の先端を当接させた状態で、前記外筒部23の先端と手前側骨皮質113との距離Lが対側骨皮質114の厚み寸法となるように、前記外筒部及び内筒部を保持する保持機構11と、を備える。【選択図】 図1
