| 摘要 |
<p>The invention concerns a flexible expandable tube for surgical dilating of physiological ducts. It consists of a tube circular in cross-section with a thin wall made of a ductile metal capable of expanding radially under the effect of internal pressure and maintaining the resulting shape, this tube being made up of at least two non-flexible elements with expandable latticed structure (8, 9, 10) mutually connected by a flexible portion formed by longitudinal zigzag bars (6), the assembly being arranged for exerting a radially expanding force against the internal wall of a vessel from one end of the tube to the other. It is particularly designed for being set in an artery or a vein to prevent locally its compression so as to allow the blood to circulate.</p> |
