Patent ID: 8409267

Claim:
A method, of treating an aneurysm in a vessel of a patient, comprising: expanding, in the vessel having the aneurysm, a first stent having a first stent proximal end and a first stent distal end, such that the first stent extends from a first location, proximal to the aneurysm, to a second location, distal to the aneurysm; expanding, within the first stent, a second stent having a second stent proximal end and a second stent distal end, such that when the second stent is expanded and engages the first stent, the second stent is axially positioned substantially adjacent to the aneurysm, and the second stent distal end is positioned proximal to the first stent distal end, thereby impeding blood flow from the vessel into the aneurysm, wherein the second stent proximal end is substantially coterminous with the first stent proximal end; applying an axially compressive force to a first portion of the first stent, the first portion overlying the aneurysm, whereby the first portion transitions from a first porosity to a second porosity, less than the first porosity, while (i) the first portion maintains a substantially constant cross-sectional dimension and (ii) wherein movement of a second portion of the first stent, distal to the first portion, is impeded by a frictional force applied by the first stent against a vessel wall distal to the aneurysm; wherein applying an axially compressive force to the first portion of the first stent causes a third portion, of the second stent, in contact with the first portion, to transition from a third porosity to a fourth porosity, less than the third porosity.