| 摘要 |
<p>A catheterization system for embedment in a patient includes a sharp edge needle (18) at the proximal end portion of the catheter (12). A protective sheath (20) is received about the needle (18) for relative slidable movement thereon between a first position wherein the sharp edge of the needle extends beyond the protective sheath and a second position wherein the blunt leading proximal edge of the protective sheath extends beyond and covers the sharp edge of the needle. <IMAGE></p> |
