Helical balloon catheter

(canceled)

A catheter comprising:

• a deflectable section,
• where the deflectable section comprises an elastic material, a flexible support material, and an inflation lumen bounded by both the elastic material and the flexible support material, where the deflectable section is deflectable from a non-deflected configuration to a deflected configuration, where when the deflectable section is in the deflected configuration, the elastic material, the inflation lumen, and the flexible support material extend helically around a passage, and
• where the elastic material is farther from the flexible support material when the deflectable section is in the deflected configuration than when the deflectable section is in the non-deflected configuration.

A catheter comprising:

• a deflectable section,
• where the deflectable section comprises an elastic material, a flexible support material, and an inflation lumen bounded by both the elastic material and the flexible support material, where the deflectable section is deflectable from a first configuration to a second configuration, where when the deflectable section is in the first configuration, the elastic material and the flexible support material extend helically around the inflation lumen, and
• where when a pressure within the inflation lumen increases, the elastic material expands away from the flexible support material.

A catheter comprising:

• a deflectable section having a deflectable cross section;
• where the deflectable section cross section comprises a first material, a second material, and an inflation lumen bounded by both the first material and the second material, where the first material has different material properties than the second material, where the deflectable section is deflectable from a non-deflected configuration to a deflected configuration, where when the deflectable section is in the non-deflected configuration, the deflectable section cross section rotates along a length of the deflectable section such that the first material and the second material extend helically along the length of the deflectable section, where when the deflectable section is in the deflected configuration, the deflectable section has a helical or coiled profile;
• where when the deflectable section is in the non-deflected configuration, a first pressure is in the inflation lumen, where when the deflectable section is in the deflected configuration, a second pressure is in the inflation lumen, where the second pressure is greater than the first pressure, and where the first material is farther from the inflation lumen when the deflectable section is in the deflected configuration than when the deflectable section is in the non-deflected configuration.