Surgical instrument used as a shaver in minimally invasive surgery comprises a drive element segment having an annular convex wall surface that faces away from its longitudinal axis defining an axis of rotation

摘要

Surgical instrument comprises an elongated hollow shaft (14) with a rotating tool mounted on the distal end, and a rotating drive element mounted in the shaft for transferring a drive force to the tool. The drive element has at least one flexible drive element section (44) provided with a number of rotating drive element segments (46) that engage in each other in a force- and/or form-locking manner. At least one drive element segment has an annular convex wall surface (60) that faces away from its longitudinal axis (58) defining an axis of rotation. Preferred Features: The drive element segment is made of a metal or ceramic.