A kind of catheter is configured to avoid hot assembly, or uniformly cooling, and the group of surrounding is woven in the radiation such as ultrasonic wave that prostate is processed. The conduit includes clear area ultrasound, can be in some embodiments, to recycle during processing by coolant liquid (such as cold water). The region is across prostate when conduit is fully inserted into (inflation of tip and the bladder and terminal air bag that reside in patient to avoid retract conduit).
