AN APPLIANCE FOR THE DETERMINATION OF THE POSITION OF MEDULLARY CAVITY NAIL BORES

The invention relates to an auxiliary device for the determination of the positions of the holes (12) of intramedullary nails (10). The characteristic feature of the invention is, that it is provided with an internal positioning part-unit (20) that can be connected to the intramedullary nail (10) and an external positioning part-unit (30), the external positioning part-unit (30) has a supporting structure (31) with a fixing end (31a) and a free end (31b) and a motion member (32) that can be connected to the free end (31b) of the supporting structure (31), the fixing end (31a) of the supporting structure (31) is attached to the intramedullary nail (10) in a fixed position, while either the source unit (40) or the sensor unit (50) is attached to the motion member (32) of the external positioning part-unit (30), while the other unit is connected to the internal positioning part-unit (20), and the sensor unit (50) is provided with a relay unit (51) for receiving the signals of the source unit (40) and a display unit (53) connected to the relay unit (51) through an information transmission line (52).