POWERED SURGICAL TOOL SYSTEM INCLUDING A CUTTING ACCESSORY WITH A ROTATING SHAFT AND A NOSE CAPABLE OF COOLING THE SHAFT

A front end attachment for use with a housing that contains a motor for actuating a cutting accessory comprises a nose that, when used with the housing, extends forward therefrom. The nose is formed with a bore for receiving a shaft of the cutting accessory so that the shaft can be connected to and rotated by the housing motor and an enclosed groove separate from the bore, the groove extending longitudinally along the nose. The cutting accessory further comprises an irrigation fitting in fluid communication with the groove and adapted to receive an irrigating fluid and flow the fluid through the groove. The nose is further formed so that the groove has at least a partially helical shape such that, as the groove extends longitudinally along the nose, the groove curves around the bore.