Patent ID: 8177728
Filing Date: 2012-05-15
Classification: A61B

Abstract:
1. A biopsy device, comprising: (a) a body; (b) a needle extending distally relative to the body, wherein the needle defines a first lumen and a second lumen, wherein the first lumen extends along a first longitudinal axis, wherein the second lumen extends along a second longitudinal axis, wherein the needle includes an opening fluidly coupling the first lumen with the second lumen; (c) a cutter, wherein the cutter is configured to translate relative to the needle to sever tissue; (d) a vent opening, wherein the vent opening is in communication with atmospheric air; and (e) a shuttle valve slider configured to translate in response to translation of the cutter, wherein the shuttle valve slider is configured to, based at least in part on the longitudinal position of the cutter, selectively move between a first longitudinal position and a second longitudinal position, wherein the second lumen is coupled with the vent opening when the shuttle valve slider is in the first longitudinal position, wherein the second lumen is sealed relative to the vent opening when the shuttle valve slider is in the second longitudinal position.