Patent ID: 6955641

Claim:
A device for irradiating tissue adjacent a body cavity, comprising: a. an elongated shaft having a proximal shaft section, a distal shaft section, a first lumen extending through the proximal shaft section and into the distal shaft section for receiving and advancing an irradiation source to an irradiation location in the distal shaft section; b. at least one vacuum port in the distal shaft section which is configured to directly open to and be in fluid communication with the body cavity and at least one vacuum lumen extending to and in fluid communication with the at least one vacuum port; and c. a single expandable member which surrounds the irradiation location on the distal shaft section, which has a first configuration for passage to the body cavity and which has a second expanded configuration with larger transverse dimensions than the first configuration to receive the tissue lining of the body cavity upon the application of a vacuum to the body cavity through the vacuum port and to shape the body cavity to the expanded expandable member in order to effectively receive therapeutic irradiation.