Expandable structures for deployment in interior body regions

1. 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.

2. A device as in claim 1

wherein inversion of the distal end of the expandable structure creates a double-jointed distal end region.

3. A device as in claim 1

wherein inversion of the proximal end of the expandable structure creates a double-jointed proximal end region.

4. A device as in claim 1

wherein the proximal and distal ends of the expandable structure are bonded by an adhesive bonding process.

5. A device as in claim 1

wherein the proximal and distal ends of the expandable structure are bonded by a melt bonding process.

6. A device as in claim 1

wherein no portion of the inner catheter tube protrudes beyond the expandable structure.