US Patent 6942633 System for treating tissue swelling

A system and method for performing site specific therapy to alleviate tissue swelling, involving the placement and use of recovery catheters having semipermeable membranes adapted to recover bulk fluid or fluid components from a tissue site. Fluid recovery can be accomplished by the delivery of a hydratable medium to the membranes, under conditions suitable to permit fluid or components to pass through the membranes in order to hydrate the medium, which is then removed from the tissue site. The method and system can also include the use of components for monitoring the progress of the system, and components for introducing a recovery catheter to a tissue site.