#$%^&*AU2017208350A120180301.pdf#####ABSTRACT A cutting operation is performed with an apparatus having an elongated 5 sleeve with a port in its distal section. The sleeve is connected to a vacuum source and a rotating shaft is disposed in the lumen of the sleeve. The shaft has a cutting blade at its distal end opposite the port. The blade has two cutting edges, a gear assembly operative to alternately rotate the shaft in a first direction and a second direction about the axis of symmetry of the shaft, and a motor for powering the 10 gear assembly.1/4 co CN0 Cc~ 0140 c~Cc 0140 r cyn In cyn N
