Geometrically shaped surgical bar with features that protect non-moving and flexible tissue

摘要

A surgical bur comprising a body (176), wherein the body comprises a plurality of flutes (180), wherein each of the plurality of flutes comprises a cutting edge (186), a rake face (184), and a clearance surface (188), and a plurality of lands (178), each of the plurality of lands is disposed between a pair of the plurality of flutes; and a drill point (194) comprising a plurality of axial relief surfaces (198), wherein each of the plurality of axial relief surfaces is distinct from the plurality of lands and borders (i) a distal portion of one of the cutting edges, (ii) one of the plurality of lands, and (iii) one of the clearance surfaces, wherein a proximal most edge of each of the plurality of axial relief surfaces borders a distal most edge of a respective one of the plurality of lands.