An extended blade of a surgical cutting instrument is provided. The blademay comprise a distal cutting end, a distal non-cutting end, and anintermediateportion that extends coaxially from the distal cutting end to the distal non-cuttingend. The distal cutting end may be located outside of a housing of theinstrument；the distal non-cutting end may be located at a posterior end of a suctionportioninside the housing； and the intermediate portion may extend coaxially from thedistal cutting portion, completely through a chamber portion of the housing,and tothe suction portion to the distal cutting end. This configuration allows forbiological material to be cut and aspirated completely through the disposablebladeand housing to a suction source, avoiding contamination and improvinginstrument sterilization for surgeries.
