| 摘要 |
<p>A biopsy needle for removal of tissue from human or animal bodies incorporates an elongated body (1) pointed at one end and a tissue-removing edge directed backwardly from the pointed end and formed on a flap (9) supported by the body (1) and movable between a retracted position in which the tissue-removing edge lies within the lateral confines of the body (1) and an extended position in which the tissue-removing edge lies beyond the lateral confines of the body (1). The flap (9) is mounted on a plunger (7) slidable and rotatable within the body (1) the wall of which is formed with an aperture (2) with which the flap may be brought into register by movement of the plunger (7). The needle is used by inserting it into the tissue, extending the flap to entrain a portion of tissue, retracting the flap and withdrawing the plunger from the body, bringing with it the portion of tissue.</p> |
