A stent graft device that requires an anchor setting procedure to prevent migration of the stent, such as an endovascular anchor stent device used for treatment of an abdominal aortic aneurism, can be anchored to a blood vessel by electrosurgically disrupting portions of the blood vessel in situ to affix struts of the stent graft device to the vessel wall, replacing barbs which have been used in such devices. The stent graft device can have a wire frame and struts or a cannula stent frame body with struts cut from the cannula. The struts (13, 38) can be provided with openings (47) which are filled with extracellular matrix material, which encourages and speeds ingrowth of the struts (13, 38) in the vessel wall.
