Patent ID: 8080031

Claim:
A prostate immobilizing rectal balloon, said rectal balloon comprising: a. a flexible shaft having a fluid passageway extending therethrough and having a distal end and a proximal end, b. one balloon having an upper portion, a bottom portion, a distal end near said distal end of said shaft and a proximal end that is affixed to said shaft, such that said fluid passageway communicates with an interior of said balloon, c. wherein said balloon comprises a top layer connected to a bottom layer to form said balloon, d. said balloon further comprising a middle layer extending between said top layer and said bottom layer, wherein said middle layer is connected to said top layer at a groove, e. wherein said balloon has a first inflated position wherein said upper portion is generally laterally flat and said bottom portion is rounded, said groove forming a central seating area that is configured to engage with a prostate when inflated, f. wherein said balloon has a second further inflated position wherein said upper portion has a bulge at said distal end of said balloon, g. wherein said bulge is configured to immobilize said prostate in position at said groove.