Device and method for staged implantation of a graft for vascular repair
View Patent ↗A graft for repairing defects in arteries is formed from a flexible graft and at least one attachment system. A device and method is disclosed for implanting a graft within the vasculature of a patient, in which the graft is inserted into the patient at a different stage than the attachment systems, and which allows for direct percutaneous insertion of the graft and attachment systems. The method permits control over the position of the graft in the vasculature during the course of deployment of the graft and attachment systems by providing for traction forces to be applied to opposing ends of the graft.
1. A method for the percutaneous insertion of a graft having a bore and being supported by at least one attachment system within the vascular system of a patient, the graft capable of assuming a compressed condition and an uncompressed condition, and the at least one attachment system being compressible and expandable radially between an expanded and compressed condition, the method comprising:
inserting the graft into the vascular system by direct percutaneous insertion;
applying a traction force to opposing ends of the graft to control the position of the graft within the vasculature, wherein the traction force is carried out using a plurality of catheters, each catheter configured to exert a force on the graft from a different point outside the vasculature;
positioning the graft adjacent a diseased portion of the vascular system;
subsequently inserting at least one attachment system into the graft in compressed condition by direct percutaneous insertion into a point of access to the vascular system over a propositioned guidewire;
positioning the at least one attachment system within the bore of the graft; and
activating the at least one attachment system from its compressed condition to its expanded condition;
wherein the attachment system is implanted in the graft to form a seal between the graft and the vascular wall.
2. The method of claim 1 , wherein the inserting step includes:
inserting the graft in compressed condition by direct percutaneous insertion into a point of access to the vascular system over a prepositioned guidewire; and
activating the graft from its compressed condition to its uncompressed condition.
3. The method of claim 2 , wherein the graft is configured to have a bifurcated profile having a superior trunk with a superior end and first and second inferior legs each with an inferior end, and wherein a first catheter having a first end and a second end is releasably connected by the first end to the superior end of the graft and configured so that the second end thereof extends through a point of access to the vasculature in the left axillary artery, a second catheter having a first end and a second end is releasably connected by the first end to the inferior end of the first leg and configured so that the second end thereof extends through a point of access to the vasculature in a first iliac artery, and a third catheter having a first and second end is releasably connected by the first end to the inferior end of the second leg and configured so that the second end thereof extends through a point of access to the vasculature in a second iliac artery.