| 摘要 |
A vascular device for treating vein valve insufficiency includes an elongated member (12, 72), a first retention portion (30, 32, 74) movable from a first elongated insertion position to an expanded position and a second retention portion (40, 42, 78) movable from a first elongated insertion position to an expanded position. An intermediate looped portion (20) is positioned between the first portion and the second portion. A valve (48, 75) is supported by the intermediate looped portion and is movable between an open position to allow blood flow therethrough and a closed position to inhibit blood flow therethrough. The intermediate looped portion is adjustable to loops of different diameters dependent on an inner diameter of the vessel wall. |
