Patent ID: 6923754

Claim:
A device for treating tissue adjacent a body cavity, comprising: a. an elongated shaft having proximal and distal portions and having an inflation lumen, a vacuum lumen and a therapeutic agent delivery lumen in at least a distal portion of the shaft; b. an inner balloon assembly having a distensible inner balloon wall defining an interior chamber in fluid communication with the inflation lumen so as to allow for passage of inflation fluid through the inflation lumen into the interior chamber; c. a receptacle within the interior chamber of the inner balloon wall in fluid communication with the therapeutic agent delivery lumen and configured to receive a therapeutic agent therefrom; and d. an outer sheath assembly having a fluid-permeable sheath wall enclosing at least in part the inner balloon wall and defining an intermediate space between the inner balloon wall and the sheath wall and configured to be in fluid communication with the vacuum lumen and provide vacuum to the intermediate space.