| 摘要 |
The invention relates to a balloon catheter comprising an outer tube (1) to which distal end a balloon (2) connects that can be expanded by feeding in a fluid via the outer tube (1), wherein an inner tube (3) extends at least partially through the outer tube (1), said inner tube (3) passing through the balloon (2) and terminating distally of the balloon (2), with the inner tube (3) having a lumen appropriate to accommodate a guidewire (6) and the balloon catheter having a distal (a,b) and a proximal section (c), wherein the proximal section (3) of the outer tube (1) is made of metal and the distal section (a,b) consists of plastic material making the distal section (a,b) more flexible than the proximal section (c), and wherein the distal section (a,b) consists of a first distal section (a) and a second distal section (b), said second distal section (b) being located proximal to the first distal section (a), with the first distal section (a) being made so as to be more flexible than the second distal section (b). The balloon catheter proposed by the invention combines in different sections materials of different flexibility which not only results in the catheter to be navigated without difficulty also over longer distances of more than 1 m but enables it as well to readily adapt to narrow-lumened blood vessels in the distal section (a,b). |
