Process for shaping and sharpening a rotatable surgical shaver blade

Claim 1

A shaver blade for use in a rotatable shaver blade assembly comprising: a tubular member having an inner cylindrical surface, an outer cylindrical surface, a distal end, a proximal end and an axis; an opening at said distal end for receiving tissue therethrough, said opening defined by a perimetral edge adjacent said inner cylindrical surface, said perimetral edge comprising a pair of spaced longitudinally extending, generally parallel edges having proximal and distal ends, a first generally transverse edge joining said proximal ends of said spaced longitudinally extending edges and a second generally transverse edge joining said distal ends of said spaced longitudinally extending edges, said first and second spaced longitudinally extending edges bounded by generally transversely and longitudinally extending first and second oblique surfaces, respectively, extending outwardly therefrom from said inner cylindrical surface to said outer cylindrical surface, said first oblique surface forming, within a plane perpendicular to said axis, a first acute angle with said inner cylindrical surface at a first point and said second oblique surface forming a second acute angle with said inner cylindrical surface at a second point, said first and second points being symmetrical within said perpendicular plane and lying on a first imaginary chord through said tubular member in said plane, said first oblique surface forming a first obtuse angle with said outer cylindrical surface at a third point and said second oblique surface forming a second obtuse angle with said outer cylindrical surface at a fourth point, said third and fourth points being symmetrical within said plane and lying on a second imaginary chord through said tubular member, said first chord lying on said perimetral edge of said opening and said second chord spaced a predetermined radial distance therefrom away from said opening.