Patent ID: 8235913

Claim:
A biopsy device, comprising: (a) a body; (b) a needle extending distally from the body, wherein the needle includes: (i) a closed tip, (ii) a transverse tissue receiving aperture proximal to the tip, and (iii) a first lumen in communication with the transverse tissue receiving aperture; (c) a cutter disposed in the first lumen, wherein the cutter is movable within the first lumen to sever tissue protruding through the transverse tissue receiving aperture, wherein the needle further includes a second lumen adjacent to the cutter; and (d) a valve assembly in fluid communication with the second lumen, the valve assembly comprising: (i) a translating member, and (ii) a valve body, wherein the translating member is movable relative to the valve body to change a pneumatic state of the second lumen based at least in part on the position of the cutter in the first lumen.