| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a catheter provided with a guide wire catheter lumen having a thin covering that is easily punctured by a guide wire at virtually any desired point along the catheter length. <P>SOLUTION: The thin covering may be integral with the catheter shaft, or may be a separate component that covers only the portion of the catheter shaft immediately adjacent the outer portion of the guide wire lumen, or may be a thin tubular construct that surrounds the entire catheter shaft. The covering is preferably bearable against tear at a puncture position. Materials suitable for the catheter shaft are polymeric materials well known in the art; the catheter shaft may optionally be provided with metallic stiffening components such as wires or hypotubes along all or part of the catheter length if needed. <P>COPYRIGHT: (C)2010,JPO&INPIT |
