Patent ID: 8790241

Claim:
A method for making a radially expandable stent-graft, comprising: positioning a radially expandable stent member concentrically over a first polymeric member, the stent member including a plurality of interconnected stent elements that interconnect to form a plurality of interstices; locating a second polymeric member concentrically over the stent member and first polymeric member; at selective locations of the first polymeric member joining the first polymeric member to the second polymeric member through less than all of the interstices to form an intermediate region having a selective bonding pattern and unbonded slip planes between the first and second polymeric members to accommodate movement of at least some of the stent elements; and fusing the first polymeric member to the second polymeric member through interstices of the stent member located at first and second end region of the stent-graft, a majority of the area of the first and second end region interstices occupied by the fused first and second polymeric members, wherein the first and second end regions have a bonding extent different from the selective bonding pattern.