Patent ID: 8454607

Claim:
Surgical instrument, comprising: a handling part, and a tool part, the tool part comprising at least one movably mounted tool, which is actuable by means of a force-transmitting and/or actuating mechanism that is operable from the handling part, the force-transmitting and/or actuating mechanism comprising a fluid-operable drive unit, and a shank, which extends in a longitudinal direction and carries on a distal end a cutting plate, the cutting plate being disposed transversely of the longitudinal direction or inclined relative to the longitudinal direction, wherein: with the drive unit in a first driving position the movably mounted tool is subjected to a first actuating force and in at least a second driving position is subjected to at least a second actuating force, the at least second actuating force is larger than the at least first actuating force; the instrument is designed for removal of bone, cartilage, or similar tissue, the movably mounted tool is a cutting element mounted displaceably on the shank, the cutting element carrying on its distal end a cutting edge, the cutting edge is directed towards the cutting plate and is movable towards the cutting plate for the cutting of tissue, a coupling element is arranged on a proximal end of the cutting element, the coupling element is detachably connectable to a drive element of the force-transmitting and/or actuating mechanism, and the coupling element is adjoined by stops acting in the longitudinal direction of the shank.