| 摘要 |
<p>A stylet for use with a medical catheter is provided. In some embodiments, the stylet has a lumen blocking portion and a shaft, where the shaft has a smaller effective diameter than the lumen blocking portion. The lumen blocking portion has an outer surface that is approximately flush with the catheter lumen in a working area of the catheter, and covers a side hole in the catheter to reduce tissue accumulation in the side hole when the catheter is inserted through a volume of tissue. In other embodiments, the stylet has protrusions that occupy at least a portion of the depth of a hole in the catheter wall. In yet other embodiments, the protrusions cover the aperture area of the hole, on the outer surface of the catheter.</p> |
