Did your surgeon leave very little cuff when performing original surgery? This does scare me as if they remove some more of my cuff, I may be in the exact same position as you are if I stricture again. Do you have any active disease in your anal area that may be causing the inflammation and stricture that may be helped with canasa or steroid suppositories? They claim mine is from original surgery 6 years ago, but I honestly feel the active disease in my cuff keeps my outlet from ever really functioning correctly.
I am a bit afraid of this as my opening is VERY small. It is tough to even get a scope in when they examine me. I guess I could try the small diameter first? This morming I was finally able to insert a canasa suppository past the anastomosis (could not even budge one in prior to yesterday's mild dilation under anesthesia). I did as you suggested and held it there for a bit just to hopefully keep the open dilated. Dilations do not seem to last long for me and I get concerned when I bleed afer each one as I feel they are just creating more scar tissue.
It is a horrobly debilitating, viscious cycle. Are you finding the dilation is helping?