Disposable internal anal sphincter side cutting needle and application method thereof

The invention discloses a disposable internal anal sphincter side cutting needle and an application method thereof. The side cutting needle comprises an electrotome, an electrotome clamping piece and a side cutting needle body. The electrotome is connected to one end of the electrotome clamping piece, and the side cutting needle body is welded at the other end of the electrotome clamping piece. The application method has the following steps: enabling the side cutting needle body to be inserted from an anal edge subcutaneous tissue, enabling the side cutting needle body to be guided to enter into a shallow layer of internal anal sphincter, and enabling the side cutting needle body to come out from a part nearby a line; enabling the head of the side cutting needle body to enter into mucosa from an outlet after the 180-degree bending of the head of the side cutting needle body, and enabling the side cutting needle body to move stealthily on the surface of the internal anal sphincter and to come out from the outlet; enabling the other end of the electrotome clamping piece to be fixed on the electrotome, selecting a condensed cutting mode, and quickly cutting off the internal anal sphincter. The cutting needle is simple in structure, is convenient to operate, causes no cut, is small in damage, is low in occurrence rate of mucosa hematoma, is high in cure rate, and is suitable for popularization.