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The instrument (Pigs. 1 and 2) consists of a conical rubber plug, to one end of which is fastened a metal band (Fig. 2, e), which has an attached handle for the purpose of manipulation. At the proximal border of this band is a deep, narrow groove which is for the purpose of holding a silk purse-string (Fig. 2, a).
The technic is as follows: A silk purse-string suture is placed around the anus at the junction of tlie anal integument (Fig. 2, c) and mucous membrane. The boiled instrument is covered with sterile oil or petrolatum and introduced into the rectum a? far as the groove in the band (Fig. 2, a). The mucous membrane is then arranged so that the purse-string can be drawn into the groove and tied (a). A circular incision of the anal integument is made and by sslight traction downward the sphincter muscle (c)
WOOLSTON WJ. AN INSTRUMENT FOR RECTAL OPERATIONS, ESPECIALLY THE WHITEHEAD. JAMA. 1911;LVII(2):111–112. doi:10.1001/jama.1911.04260070115009
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