Abstract: The invention relates to a device for introducing a spiral blade into an intramedullary nail. The device includes a target-finding stay with a through hole, a guide sleeve attached coaxially in relation to the through hole, and a mandrel which is able to slide in the guide sleeve. The spiral blade is removable attached to the front end of the mandrel. The peripheral surfaces of the mandrel and the through hole of the guide sleeve have engaging mechanisms that interact with each other in such a way that the mandrel can be moved in the through hole of the guide sleeve only in a screw-like manner. An axially movable tissue-protective sleeve can be attached coaxially in relation to the mandrel.

Abstract: The invention relates to an intramedullary nail with a locking hole. The locking hole crosses the intramedullary nail perpendicular to the longitudinal axis of the intramedullary nail. The locking hole includes a passage which extends perpendicular to the longitudinal axis of the intramedullary nail and a borehole which does not contact the passage and also extends perpendicular to the longitudinal axis of the intramedullary nail and is displaced in the direction of the longitudinal axis in relation to the passage. The locking hole further includes a slit which connects the passage and the borehole and which in a cross-section of the intramedullary nail is not parallel to the passage.