| 摘要 |
<p>The invention concerns a structure comprising a retractable sleeve (10) designed to be set around the vessel (20), the sleeve being a slit tubular sleeve, with a slit (16), extending from one end of the sleeve to the other, and made of an elastically deformable material capable of stressing radially inwards the wall of the canal (20) in substantially uniform manner on the periphery of said wall, said material being further selected such that, when there is no stress, the sleeve recovers its original wound shape by mere effect of the intrinsic elasticity of said material. The sleeve material is a silicon elastomer such as an elastomer based on organosilicon/organosiloxane polymers.</p> |
