Methods and systems for treatment of vesicoureteral reflux are disclosed in which a detachable balloon catheter is incorporated into a endoscopic instrument, such as a cystoscopic needle. The needle is directed through the cystoscope and inserted into the subureteral region of the refluxing ureter. A...http://www.google.co.uk/patents/US5304123?utm_source=gb-gplus-sharePatent US5304123 - Detachable balloon catheter for endoscopic treatment of vesicoureteral reflux
