Patent ID: 7465268

Claim:
A method for treating tissue surrounding a body cavity of a patient, comprising: a) providing a device having an elongated shaft, a distal shaft portion, a treatment location at the distal shaft portion, an expandable cavity filling member disposed about the distal shaft portion with an expanded configuration that at least partially fills the body cavity and at least one tubular member within the treatment location having a distal end coupled to the distal shaft portion, an extended configuration with an arcuate portion curving away from the distal shaft portion and spaced inwardly from the expandable cavity filling member in the extended configuration and a lumen extending within the tubular member having or configured to receive a radiation source; b) inserting the device into the patient and advancing the device therein until the treatment location is deployed within the body cavity; c) expanding the cavity filling member within the body cavity; d) positioning at least one tubular member within the body cavity so that the arcuate portion of the tubular member is closer to a first portion of tissue surrounding the body cavity than a second portion of tissue surrounding the body cavity; and e) providing a radiation source within the lumen of at least one tubular member closer to the first portion of tissue surrounding the body cavity to asymmetricalIy irradiate so that the first portion of tissue surrounding the body cavity receives a greater amount of radiation than the second portion of tissue surrounding the body cavity.