Patent ID: 8491496

Claim:
A biopsy device comprising: a cannula; a cutter translatable with respect to the cannula for severing tissue drawn into the cannula; and a tissue storage assembly comprising a sample lumen for holding tissue samples, an adjacent vacuum lumen, and a plurality of fluid openings disposed therebetween, the sample lumen communicating with the plurality of fluid openings; wherein the cannula comprises a cutter receiving lumen, a cannula vacuum lumen, and a plurality of cannula fluid openings disposed therebetween, wherein the cutter is operable to at least one of cover or uncover the cannula fluid openings, and wherein the cannula comprises a tissue receiving port, an outer wall, and an inner divider wall terminating at a proximal edge, wherein the outer wall surrounds the inner divider wall and extends proximally past the proximal edge of the inner divider wall.