Method and apparatus for treatment of focal disease in hollow tubular organs and other tissue lumens

Abstract

The present invention provides a technique for treating diseased portions of tissue lumens by the focal introduction of at least one therapeutic agent at the diseased region. A catheter is positioned in a lumen such that first and second expansile members surround the diseased portion of tissue. The expansile members are expanded to occlude the diseased region and a therapeutic agent is introduced to the occluded diseased region via the catheter. The catheter is allowed to remain in place for a therapeutically effective period of time to allow the therapeutic agent to contact the diseased portion for such a period of time. The catheter arrangement also can be used to occlude a diseased region, remove physiological fluid from the occluded region and subsequently to disrupt the diseased region and/or apply the therapeutic agent. The therapeutic agent can be selected to suppress cell proliferation in the diseased region, and the occluded region can be treated with a medicament to promote vessel healing. The occluded region also can be paved with polymeric material. Finally, the expansile members are contracted and the catheter is removed.