| 摘要 |
<p>This invention relates to steerable catheters. More particularly, this invention relates to steerable sort-tip catheters comprising an outer flexible catheter shell (2) having distal (7) and proximal ends; an inner flexible catheter (3) having distal (6) and proximal ends and two or more lumens, one of said lumens being closed at its distal end, the one or more other lumens being patent, i.e., open, for introduction of a central guide wire (8) or other desired object, the inner catheter (3) extending through the outer catheter shell (2), and the distal end (6) of the inner catheter protruding beyond the distal end (7) of the outer catheter shell (2); a steering wire (4) having distal and proximal (15) ends and extending the length of the inner catheter (3) through the lumen having the closed end, the distal end of the wire (4) being embedded in said closed end; and control means (5) attached to the proximal ends of the catheter shell (2) and the inner catheter (3), the proximal end (15) of the steering wire (4) extending through the control means (5) and the control means (5) having a torque means (16) which fixedly engages said steering wire (4), and a method of using same.</p> |
