Surgical instrument for shaping a bone structure, e.g. for shaping a hole for prosthesis insertion, has a navigation device with position sensors that ensures the position of a shaping tool relative to the bone is precisely known

摘要

Surgical instrument (6) for shaping a bone structure comprises an oscillating linear drive (8) and a linearly moving shaping tool (9). The instrument has a navigation device comprising a position sensor (24) that is rigidly attached to the linear drive and a position sensor (25) that is rigidly attached to the bone. An evaluation unit (27) is used to monitor the spatial separation between the two sensors and compare it with set values.