The target device (20) in order the target to do the intersection bore (16,18) inside the bone nail (10) has with the target part (32) which forms the part of the arm component which extends parallel with the longitudinal axis of the arm component (28) and the bone nail which are connected to the end part (24) of the bone nail. The adjustment possible target device (36), the installation and others re, as for the adjustment possible device (36), has the intersection bore (16,18) of nailing and alignment possible such a bore (88,90) on the target part. Is movement possible in vertical direction vis-a-vis the target part the adjustment possible device (36) vis-a-vis the nail longitudinal axis and the plane surface which includes the both of the medial axis of the intersection bore. Target indicator (150,200), on adjustment possible target device (36) installation and others re ru. The target indicator has the radiation permeability itself which includes the level part which among those possesses the parallel radiation impermeability element (160,162,210,212,214) which is alienated.骨釘(10)内の横断ボア(16,18)を標的するための標的装置(20)は、骨釘の端部部分(24)に結合されるアーム部材(28)と、骨釘の長手軸と平行に延びるアーム部材の部分を形成する標的部分(32)とを有する。調節可能な標的装置(36)が、標的部分上に取り付けられ、調節可能な装置(36)は、釘内の横断ボア(16,18)と整列可能なあんなボア(88,90)を有する。調節可能な装置(36)は、釘長手軸及び横断ボアの中心軸の両方を含む平面に対して垂直な方向に標的部分に対して移動可能である。標的表示器(150,200)が、調節可能な標的装置(36)上に取り付けられる。標的表示器は、離間した平行な放射線不透過性素子(160,162,210,212,214)をその中に有する平面的な部分を含む放射線透過性本体を有する。
