| 摘要 |
<p>An instrument for collecting body tissue includes a tubular cutting member having an exterior surface, a proximal end, and a distal end capable of penetrating body tissue; and a flexible cutting extension coaxially and slidably disposed around the exterior surface of the cutting member, the flexible cutting extensions having a proximal end and distal end capable of cutting tissue located at the distal end of the cutting member and covering the distal end of the cutting member so that tissue that has entered the cutting member is retained in the cutting member. A first tubular member may be connected to the cutting member, and a second tubular member may be connected to the cutting extension, the second tubular member being coaxially disposed on the first tubular member. A handle mechanism may be connected to the first and second tubular members, the handle mechanism allowing relative movement between the first and second tubular members such that the flexible cutting extension may be extended beyond the distal end of the cutting member.</p> |
