Subcutaneous fistula incision or excision

The subcutaneous fistula is a pathological duct connecting the surface of the organ of the cavity to the organ of the cavity, and usually has more than two openings. When the fistula changes in traits, it should be replaced when the function is affected. At this time, the fistula can be removed by subcutaneous fistula incision or resection. Treatment of diseases: rectal vaginal fistula Indication Applicable to low-grade simple subcutaneous fistula, external hemorrhoids between internal and external sphincters. Contraindications 1, with systemic diseases, can not tolerate surgery. 2, local infection, not suitable for surgery. Preoperative preparation Antibiotics are routinely used to prevent infection before surgery. Surgical procedure (1) The stone removal position. First insert a piece of white gauze into the anal canal, and then inject the disinfected methylene blue or amethyst from the outer mouth of the fistula with a needle that smoothes the tip of the needle. If the gauze is dyed with color, it will help to find the inner mouth. Methylene blue is also injected to facilitate the identification of the fistula during surgery. (2) Slowly insert the slotted probe from the outer mouth of the fistula and stop if there is resistance. Then, the skin, the subcutaneous tissue, and the outer wall of the fistula were cut with an electric knife in the direction of the probe to partially open the fistula. (3) Insert the slotted probe into the remaining portion of the fistula and gradually cut the surface tissue of the probe with an electric knife in the same way until the entire fistula is completely cut. (4) Use a curette to scrape off the necrotic tissue and granulation tissue stained with methylene blue on the wall of the fistula. (5) Cut off the skin and subcutaneous tissue at the edge of the wound to make a wide wound. After careful hemostasis, the wound is filled with iodoform gauze strips or oil gauze.