| 摘要 |
A dilatation catheter consists of a catheter body 1 comprising at least two expandable sections 2a, 2b capable of selective independent expansion to deliver stent(s) 3a, 3b to vascular site(s). The expandable sections 2a, 2b may be adjacent or remote from one another. Where a considerable length of vascular tissue is stenosed, a stent delivery catheter may be selected which has a number of adjacent expandable sections 2a, 2b, each carrying a stent 3a, 3b. The catheter may be inserted into the vascular tissue and the expandable section with the stent most closely matched to the stenosed region may be expanded to place the stent, in a tailored fashion, into the vascular tissue. The surgeon can establish whether a sufficient length of tissue has been stented. If not, an additional second expandable section may be positioned in the appropriate unstented region, expanded and a stent delivered accordingly. |
