The Tip tageteingu device and the said device in order at least to register one in the medullary nail which is installed on the medulla inside of pipe of the bone Tip screw hole installation possibility the long and narrow and include reconstruction possible probe inside lumen of the said nail.< Choice figure >Drawing 11骨の髄管内に設置される髄内釘における少なくとも一つの先端ネジ穴を位置決めするための先端ターゲティング装置、該装置は該釘の内腔内に設置可能な細長くかつ再構成可能なプローブを含んでいる。【選択図】図11