Patent ID: 8079946

Claim:
A brachytherapy device for treating tissue surrounding a body cavity within a patient, comprising: a. an elongated shaft which has a distal shaft section having a centrally located longitudinal axis and being configured to be deployed within the body cavity; b. at least one tubular delivery member which has proximal and distal portions secured in the treatment location and an intermediate portion between the proximal and distal portions that is fixed in a position extending away from the longitudinal axis, and which has an inner lumen extending within the intermediate portion that is configured to be closer to a first portion of tissue surrounding the body cavity than an opposed second portion of tissue surrounding the body cavity and so that when a radiation source is disposed within the inner lumen of the tubular delivery member, the first portion of the tissue surrounding the body cavity is irradiated more intensely than the second portion of tissue of the body cavity c. an expandable member surrounding the distal shaft portion and unsecured to the intermediate portion of at least one tubular delivery member and having a contracted configuration to facilitate advancement to the body cavity and an expanded configuration spaced away from the at least one tubular delivery member to engage tissue surrounding the body cavity.