My husband had prostate cancer in 1999 and had the brachy therepy seed implant. After this time, he first had problems he could not pee and than after he had a procedure, scraping, done, he had incontinence. At this time, he has to catherize at least three times daily. He had the scraping done twice and is now scheduled to have it again on June 5. How long will this scraping last and for how long would he have to use the cather. My husband is 80 yrs but is in very good health and was very active until this has brought him down.