| 摘要 |
In repairing aneurysms in blood vessels with expandable grafts side vessels may be covered. To overcome this problem one or more fenestrations are formed in the graft in-situ. The graft may be perforated from the blood vessel or from the side vessel. The kit comprises a graft; a catheter for delivery and positioning of the graft; and a device for endovascular penetration of the graft at the location of the side vessel. The graft may be standard or initially perforated and the perforations enlarged from the inside of the graft by means of one or more side balloons 31 on the catheter to form fenestrations or openings. These fenestrations may be further supported and maintained by stents placed in the side vessels 16 which stents can be delivered from either side of the fenestration. The catheter may be a multi-lumen balloon catheter with a lumen for inflation and one or more lumens for guide wires which extend through side balloons into side vessels. Alternatively the graft can be perforated from the side vessel by means of a cutting catheter or an inflatable catheter with a cutting wire. |
