| 摘要 |
A stent (10) has a generally tubular shape and is initially formed in a collapsed configuration. A fabric cover (13) is provided for an inner stent (11) and is attached outside stent (10) at one or more desired locations. Fabric cover (13) is much larger in diameter than the diameter of the collapsed stent, however, when stent (10) is expanded through activation of a balloon catheter (25) therewithin, stent (10) expands to closely conform to the interior walls of fabric cover (13). The attachment of fabric cover (13) to stent (10) may be accomplished in several ways. In the preferred embodiment, fabric cover (13) may be attached outside inner stent (11) at one linear location (15) parallel to a longitudinal axis of stent (10). In an alternative embodiment, fabric cover (13) may be attached concentrically about inner stent (11) and secured in that configuration by a series of sutures. |
