A device for prostate treatment is inserted into a prostatic portion of an urethra and connected to an energy source. Energy is delivered to the prostate from the device. The amount of energy emitted to prostatic tissue adjacent to a bladder is greater than that emitted to prostatic tissue distant from...http://www.google.es/patents/US5987360?utm_source=gb-gplus-sharePatente US5987360 - Axial preferential thermal therapy
