Patent ID: 8251884

Claim:
A method for irradiating tissue surrounding a body cavity of a patient, comprising: a) providing a device comprising i. an elongate outer catheter having a proximal end, a distal end, a treatment portion proximal to the distal end, an inner lumen extending within the outer catheter to the treatment location; and ii. an elongate inner catheter configured to be rotatably disposed within the outer catheter and which has a proximal end, a distal end, a longitudinal axis and an inner lumen off-set in its entirety from the longitudinal axis which extends within the inner catheter to the treatment location in the outer catheter and which is configured to receive the radiation source; b) inserting the device into the patient until the treatment location is deployed within the body cavity; c) rotating the inner catheter relative to the outer catheter so that the off-set inner lumen is closer to a first portion of tissue surrounding the body cavity than a second portion of tissue surrounding the body cavity; and d) irradiating tissue surrounding the body cavity by a radiation source in the off-set inner lumen within the treatment location to asymmetrically irradiate tissue at the body site.