| abstract |
A catheter is provided for placement within a body lumen, the catheter including a flexible conduit that is elongated along a longitudinal axis, the flexible conduit having a proximal end and a distal end. The catheter further includes at least one delivery waveguide and at least one collection waveguide positioned along the flexible conduit, the at least one delivery waveguide and the at least one collection waveguide constructed and arranged to transmit radiation at a wavelength in a range of about 250 to 2500 nanometers. The catheter further includes a flexible, expandable first surface encircling surrounding a segment of the conduit, a transmission output of the at least one delivery waveguide and a transmission input of the at least one collection waveguide located within the flexible, expandable first surface, and the distal end of at least one of the at least one delivery waveguide and the at least one collection waveguide tethered to the flexible, expandable first surface radially translatable with respect to the flexible, expandable first surface, the at least one transmission input located between a portion of the flexible, expandable first surface and a portion of the second surface. |