Patent ID: 8900161
Filing Date: 2014-12-02
Classification: A61B

Abstract:
1. A tissue sampling device comprising: a cannula including an elongate tubular body defining a longitudinal axis extending between a proximal cannula end and a distal cannula end having a sharpened coring tip; a shaft having a proximal shaft end, a distal shaft end, and being rotatably positioned within the cannula such that the distal shaft end is recessed from the sharpened coring tip; and a cutter having a plurality of axially advancing cutting elements extending within the cannula between the distal shaft end and the sharpened coring tip, the plurality of cutting elements each having a linear shape from a first cutting element end coupled to the distal shaft end to a second cutting element end coupled to the distal cannula end; each of the plurality of cutting elements further being movable in a different cutting path defining an arc about the longitudinal axis, responsive to rotating the shaft relative to the cannula to detach a piece of body tissue positioned within the cannula between the distal shaft end and the sharpened coring tip, and the different cutting paths intersecting at a point within the longitudinal axis.