| 摘要 |
<p>A balloon catheter assembly comprising twin balloons (6,7) for the treatment of bifurcated vessels. One or both balloons (6,7) are stepped to provide a proximal section (33), a distal section (34) of larger diameter, and a step (35) between the two. In use, the twin balloons are positioned across the bifurcation (36) so that the distal sections (34) of the two balloons enter respectively the main and side branches (38,39) distally of the bifurcation, and the smaller diameter proximal sections (33) are positioned side by side in the common area (40) in the vessel (37) proximally of the bifurcation. This design can avoid over-inflation in the common area (40), due to the presence of two balloons within the lumen of the vessel (37). <IMAGE></p> |
