Patent ID: 7156861

Claim:
A device for deployment into an interior body region comprising an outer catheter tube, an inner catheter tube sized and configured to be received within the outer catheter tube, and an expandable structure having a distal end, a first end region adjacent the distal end, a proximal end, and a second end region adjacent the proximal end, the distal end being bonded to the inner catheter tube to form a first bonded region and the proximal end being bonded to the outer catheter tube to form a second bonded region, the first end region being inverted to overlie the first bonded region and the second end region being inverted to overlie the second bonded region, the expandable structure also including a middle region having an entire axial length extending between the inverted first and second end regions, the middle region, when substantially fully expanded, defining a cylinder possessing a maximum structure diameter that is uniform essentially along the entire axial length of the middle region.