Surgical tool having flexible tubular inner member movable for tissue working

A surgical tool for chucking in a powered surgical handpiece, said tool comprising:

• an elongated outer tubular member having a proximal end adapted to be coupled to the surgical handpiece, and a distal end spaced from the proximal end, wherein a window is formed in the distal end;
• and
• an inner tubular member that is disposed in said outer tubular member and that is capable of rotation within said outer tubular member, said inner tubular member comprising:
• a bendable inner tube of flexible polymer material, said inner tube having a proximal end and a distal end, a bore having a diameter that extends axially through said inner tube, a wall thickness around said bore, a recess that extends from the distal end a set length that is coaxial with said bore, said recess having a diameter that is greater than the diameter of said bore so that said inner tube has a wall thickness around said recess that is less than the wall thickness around said bore;
• a drive hub fixed to the proximal end of said inner tube for engagement by a powered handpiece;
• and
• a tissue working tip extending forward from the distal end of said inner tube so as to be located adjacent said window of said outer tubular member, said tissue working tip having a reduced diameter proximal end portion defining an annular flange, said annular flange being seated in said recess of said inner tube wherein, said annular flange extends a distance into said recess less than the length of said recess so that said inner tube, between said bore and said annular flange, has an unreinforced section of reduced wall thickness.