| 摘要 |
<p>A catheter (100) has an abutment member (120) formed proximate the distal end (122) thereof. The abutment member (120) abuts a complementary abutment surface (50) formed upon an introducer so as to prevent collapsing of the catheter body (102) during the insertion process. The abutment member (120) pereferably comprises an annular abutment shoulder (120), which reduces the diameter of the lumen of the catheter (100). An opening (108) formed in the catheter body (102) proximate the tip of the catheter facilitates fluid flow through the lumen of the catheter in the event that the reduced diameter portion of the lumen becomes obstructed. The tip (104) of the catheter preferably comprises a rigid material, so as to assure positive locking action of the abutment member (120) of the catheter with the abutment surface (50) of the introducer during the insertion process.</p> |
