Patent ID: 6837896

Claim:
A medical bladed device comprising: a handle; and a cutting blade portion being tapered and formed in continuation from the handle, wherein the cutting blade portion comprises: a front face comprised of a first face and a second face, said first face having a first side, a back end and a front end, said second face having a first side, a back end and a front end, said first face and said second face being formed on two perpendicularly intersecting planes passing through a center axis of the bladed device, the front end of said first face and said front end of said second face intersecting to form a front face intersection a back face comprised of a third face and a fourth face, said third face having a first side, a back end and a front end, said fourth face having a first side, a back end and a front end, said first face and said second face being formed on two perpendicularly intersecting planes passing through a center axis of the bladed device, said front end of said third face and said front end of said fourth face intersecting to form a back face intersection; a pair of primary cutting blades, each of said primary cutting blades having a primary cutting blade front end and a primary cutting blade back end, each of said primary cutting blades being formed on the first sides of said front face and back face, a pair of secondary cutting blades, each of said secondary cutting blades having a secondary cutting blade front end and a secondary blade back end, the secondary cutting blade back ends intersecting with the primary blade front ends of the primary cutting blades, the secondary cutting blade front ends intersecting with each other, each of said secondary cutting blades being formed on both sides of said front face and back face; a sharp tip formed at the intersection of said secondary cutting blade front ends adjacent the front face; and a square-shaped fifth face having a triangular cross section defined by the front face intersection, the pair of secondary cutting blades and the sharp tip, wherein a secondary cutting blade angle formed by the pair of secondary cutting blades ranges from 35 degrees to 105 degrees, and a primary cutting blade angle formed by an imaginary intersecting point between the pair of primary cutting blades ranges from 15 degrees to 35 degrees.