Patent ID: 8221424

Claim:
A surgical instrument comprising: a hand piece having a distal end and a proximal end; a shaft portion extending from the distal end of the hand piece and having a distal end and a proximal end; a drive shaft disposed for rotation within the shaft portion, the drive shaft having a distal end and a proximal end thereof; a surgical tool bit connected to the distal end of the drive shaft; a protective hood connected to the distal end of the shaft portion, wherein the surgical tool bit resides within the protective hood, partially exposed, and the protective hood is rotatable relative to the surgical tool bit exposing a different portion of the surgical tool bit; and said hand piece including a first control member, said first control member operably connected to the proximal end of the shaft portion and manipulation of the first control member controls the rotation of the protective hood relative to the hand piece and the drive shaft via the shaft portion.