Patent ID: 8419760

Claim:
A cutting accessory for performing a medical/surgical procedure, said cutting accessory comprising: a drive shaft having opposed proximal and distal ends; a tissue working member attached to or integral with the distal end of said drive shaft; and a coupling head attached to the proximal end of said drive shaft, said coupling head having: a boss having a plurality of planar faces that are located circumferentially around said boss, each face having a width thereacross, each face being in a plane that is angled relative to the planes of adjacent faces and wherein each pair of adjacent faces meet to define an edge so that said boss has a plurality of angularly spaced apart edges that are located circumferentially around said boss; a body located distally forward of said boss, said body having: an outer surface with a circular cross sectional profile and a diameter such that said body extends radially outwardly beyond said boss; opposed proximal and distal ends, the proximal end being located adjacent said boss; a plurality of spaced apart slots that extend inwardly from the outer surface of said body, each said slot extending distally forward from the proximal end of said body, wherein each said slot is aligned with a separate one of the boss faces, has a width thereacross less than the width across the aligned boss face and has a proximal end opening that opens into space immediately adjacent the boss face with which said slot is aligned, the proximal end opening being defined by a pair of opposed beveled faces of the body that taper inwardly towards each other, wherein, adjacent beveled faces that define adjacent slots in the body meet at an edge, each edge present where adjacent body beveled faces meet being aligned with a separate one of the edges where an adjacent pair of boss faces meet; and at least one indentation that extends inwardly from the body outer surface, the at least one indentation being located distally forward of the slots; and a shoulder located distally forward of said coupling head body so as to be spaced distally forward from the at least one indentation in said coupling head body, said shoulder extending radially beyond the outer surface of said coupling head body so as to have a proximally directed face that projects radially beyond said coupling head body.