Suggest Remedy For Blockage In Urethra After Prostrate Treatment

Thanks in advance. I had prostrate cancer treated by seed implants, then six weeks of daily targeted x-ray treatments. After the completion, I started having a blockage in the uretha which had to be dialated to relieve pressure. At first this was periodic. Eventually, this no longer worked for longer than a few days after several trips to the hospital emergency room for catherization, I had to have an emergency super pubic catheter. Now, I have to go back the my urologist every six weeks for tube replacement. I have had problems with blockage and further trips to the emergency room. During all of this time, my wife and family have periodically complained about the odor. I am replacing the leg bag every couple of days and keep the tube placement cleaned, steralized and daily dressing replacement. My urologist is very, very, very reluctant to prescribe an antibiotic for infections. I have several questions. 1. How often should the leg bag be replaced. It seems that the odor is partially caused by the presence of bacteria, and partially an exagerated odor of plastic material. My urologist has been reluctant even to discuss these issues. Thanks for your help. Gary Killian