Patent ID: 8460298

Claim:
A bur for use with a surgical tool, said bur having: a shaft, said shaft formed with features to facilitate the coupling of the bur to a surgical tool capable of rotating said shaft and a distal end; a head located forward of the distal end of said shaft, said head formed with a plurality of flutes each said flute having: a rake surface with a rake angle; and a clearance surface, said plurality of flutes including: a first set of flutes, said flutes of said first set of flutes having a first rake angle; and a second set of flutes, said flutes of said second set of flutes having a second rake angle, the second rake angle being different from the first rake angle and wherein, said flutes are arranged on said head so that: said flutes forming a first pair of arcuately adjacent flutes are spaced apart by a first pitch angle; said flutes forming a second pair of arcuately adjacent flutes are spaced apart by a second pitch angle different from the first pitch angle; and said flutes forming a third pair of arcuately adjacent flutes are spaced apart by a third pitch angle, the third pitch angle being different from the first pitch angle and the second pitch angle.