Patent ID: 8460299
Filing Date: 2013-06-11
Classification: A61B

Abstract:
1. A surgical instrument for removing bone, cartilage or similar tissue comprising: a shaft that extends in a longitudinal direction and at its distal end carries a cutting plate inclined transversely to the longitudinal direction or relative thereto, with a cutting element which is movably mounted on the shaft and carries at its distal end a blade pointing in the direction of the cutting plate and movable toward the cutting plate in order to cut tissue, a first coupling element being arranged at the proximal end of the shaft for detachable positive connection to a driving device which has a second coupling element interacting with the first coupling element, wherein: the first coupling element is a polyhedral groove which is arranged at the proximal end of the shaft, extends in a circumferential direction, and has a groove base and groove sidewalls pointing in the distal and proximal direction, outer surfaces of the groove point radially outward from a longitudinal axis of the shaft, and the groove sidewalls serve as stops acting in the longitudinal direction of the shaft.