| 主权项 |
1. A biopsy device, comprising:
a vacuum source; an elongate member having a proximal end, a distal end, an outer surface, a lumen in fluid communication with said vacuum source, and a longitudinal axis extending between said proximal end and said distal end, said distal end having a piercing tip; a sample receiving notch formed in said elongate member, said sample receiving notch defining a side port adjacent said outer surface, said sample receiving notch being configured to extend inwardly from said side port and terminate at a sample floor in an interior of said elongate member, said sample receiving notch having a proximal end wall and a distal end wall, said distal end wall being located between said distal end and said proximal end wall, said proximal end wall being separated from said distal end wall along said longitudinal axis, said floor extending between said proximal end wall and said distal end wall, said proximal end wall having a hole in fluid communication with said lumen; and a tissue anchor having a cantilever portion with a free end, said cantilever portion configured to extend from a distal portion of said elongate member adjacent to said sample receiving notch toward said proximal end wall of said sample receiving notch, and having a sharp tip that extends from said free end of said cantilever portion toward said sample floor, wherein said sharp tip includes a planar face, and a plane of said planar face is oriented to intersect said sample floor, said planar face oriented to face said distal end wall, said tissue anchor and said proximal end wall having said hole collectively configured to place tissue received in said sample receiving notch in a state of tension between said planar face of said tissue anchor and said proximal end wall when a vacuum is applied by said vacuum source to said hole in said proximal end wall. |
