Patent ID: 8500769

Claim:
A cutting accessory for coupling to a powered surgical handpiece, said cutting accessory including: a drive hub, said drive hub being formed with at least one geometric feature for causing said drive hub to engage an output shaft of a motor integral with the handpiece; a drive shaft that extends forward from said drive hub; an outer hub, said outer hub being disposed over said drive hub and including: an outer hub base dimensioned to be fitted in a complementary opening in the handpiece, said outer hub base having an inner wall provided adjacent an open proximal end in which said drive hub is seated; and an outer hub head integral with and located forward of said outer hub base, said outer hub head being shaped to define a bore through which said drive shaft extends; a seal formed from elastomeric material having a base section extending within the outer hub base and disposed against the inner wall of said outer hub base, said seal being shaped to define at least one rib that is axially spaced away from the open proximal end of said outer hub base that surrounds said drive hub; and an outer housing that extends distally from said outer hub head and that at least partially surrounds said drive shaft.