Patent ID: 7153299

Claim:
An optical apparatus for treating tissue of a patient comprising: an elongate tubular element having a lumen, a distal end, and a proximal end; a support scaffold structure deployable out of the distal end of the tubular element, wherein the support scaffold structure comprises a plurality of basket arms extendable outwardly for stabilizing said support scaffold in place when deployed, the support scaffold structure having a central optical fiber that emits light, wherein at least one basket arm of the support scaffold structure comprises a peripheral optical fiber that is optically connected to a light source having a light beam, said peripheral optical fiber having at least one optical grating along an axis of said peripheral fiber that reflects a certain wavelength or intensity of said light beam, said certain wavelength or intensity of the reflected light beam being correlated to a temperature, wherein said optical grating is coated with a material having a thermal coefficient that is greater than a thermal coefficient of the fiber; and said light source having a light beam, wherein the light beam is coupled into said central optical fiber.