Anal fistula treatment principle is what

Anal fistula treatment principles must be in accordance with the mechanism of anal fissure, Anal fistula and the anatomical structure developed.
① removal of mouth: surgery to find the primary within the mouth and the anus sinus infection, and anal gland resection clean catheter, which is the key to treatment of anal fistula.
② handle fistula and branch pipe, dead space: Build the pipeline fistula, branch pipe, such as dead space cleared away to avoid recurrence.
③ reservations anorectal ring: Anal Fistula surgery, the diagnosis should be made clear, and I identify with fistula to retain anorectal ring, in order to maintain the normal function of the anal including about.
In short, in specific surgical operation, we must be careful to find the mouth and to prevent cut off anorectal ring.