| 摘要 |
<p>The present invention provides an aspiration device that includes an outer cannula (16), a stylet (14), and an aspiration needle (80). The aspiration needle includes hollow cannula (82) and an aperture (93). The outer cannula (16) defines a distal tip (29) that is tapered to provide a distal cutting edge. The stylet (14) is designed to be inserted in the outer cannula (16). The stylet (14) also defines a sharp distal tip (30). The hollow cannula (82) designed to be inserted in the outer cannula (16). A distal end (91) of the hollow cannula (82) is closed and an aperture (93) is defined in a side of the hollow cannula (82).</p> |
