| 摘要 |
<p>An introducer sheath includes an elongated hollow hypotube that is formed with a spiral cut that extends between the ends of the hypotube and extends through the hypotube from its outer surface to its inner surface. During manufacture, the spiral cut is made with a pitch angle (a) that can be varied along the length of the hypotube to provide different sections of the hypotube with different degrees of flexibility. A polymer coating is positioned on the outer surface of the hypotube to establish a lubricious coating for the introducer sheath.</p> |
