| 摘要 |
<p>The system has a cylindrical sleeve (10) constituted of woven shape memory wires (14) by forming helical spires (16) that alternatively overlap with each other. Each wire has transversal section less than 45 micrometers, and number of wires is greater than 40. An angle (alpha), which forms a tangent (T) in any point (18) of one spire with respect to a plane containing a longitudinal axis (12) of the sleeve and the point, is greater than sixty degrees when the sleeve is in an unfolded form. A wire (22) is woven with the wires (14), and a central support with a band is plugged into the sleeve.</p> |
