Balloon structure with anchoring portions for anchoring in a bodily passage

Abstract

A balloon structure includes a proximal balloon portion having a first internal volume, a distal balloon portion having a second internal volume, and a central balloon portion disposed between and joined with the proximal and distal balloon portions. The central balloon portion has a third internal volume isolated from the first and second internal volumes. A first lumen is associated with the third internal volume to direct pressure to the third internal volume for inflation of the central balloon portion. At least one second lumen is associated with the first and second internal volumes to direct pressure to the first and second internal volumes for inflation of the proximal balloon portion and the distal balloon portion. Whereby, upon inflation, the central balloon portion dilates, or delivers other treatments to tissue in the passage, with the proximal and distal balloon portions limiting movement of the balloon structure in the passage.

What is claimed is: 
     
         1 . A method of anchoring a balloon structure in a bodily passage, the balloon structure having a proximal balloon portion including a first internal volume, a distal balloon portion having a second internal volume, and a central balloon portion disposed between and joined with the proximal balloon portion and the distal balloon portion, the central balloon portion having a third internal volume isolated from the first and second internal volumes, the method comprising the steps of:
 inserting the balloon structure into the bodily passage,   inflating the internal volumes of each of the proximal balloon portion and the distal balloon portion to thereby limit movement of the balloon structure in the bodily passage,   inflating the internal volume of the central balloon portion to dilate tissue in the bodily passage while the proximal and distal balloon portions are inflated, and   delivering energy through the central balloon portion to tissue near the bodily passage while at least the proximal and distal balloon portions are inflated.   
     
     
         2 . The method of  claim 1 , wherein step of delivering energy employs energy delivery structure disposed within the central balloon portion. 
     
     
         3 . The method of  claim 1 , wherein step of delivering energy occurs while the proximal balloon portion, the distal balloon portion, and the central balloon portion are each inflated. 
     
     
         4 . The method of  claim 2 , wherein the step of delivering energy comprises:
 delivering radio frequency energy, radiation energy, infrared energy, heat energy, or electrical energy.   
     
     
         5 . The method of  claim 1 , wherein step of delivering energy employs energy delivery structure extending through an outer wall of the central balloon portion so as to engage the tissue. 
     
     
         6 . The method of  claim 5 , wherein the step of delivering energy comprises:
 delivering radio frequency energy, radiation energy, infrared energy, heat energy, or electrical energy.   
     
     
         7 . The method of  claim 1 , further comprising:
 obtaining an image of tissue near the bodily passage while at least the proximal and distal balloon portions are inflated.   
     
     
         8 . The method of  claim 7 , wherein the balloon structure further comprises imaging structure and the step of obtaining an image employs the imaging structure.