Anal fistula treatment rubber band seton directional tightening force controller and use method

The invention discloses an anal fistula treatment rubber band thread hanging directional thread tightening force controller which comprises a rubber band, a U-shaped sleeve, a fixing frame, a hip supporting mechanism, a rubber band clamping mechanism, a force control mechanism and a rubber band hanging mechanism. The U-shaped sleeve is of a hollow structure, and two inserting holes are formed in the back of the bent position of the U-shaped sleeve. The hip supporting mechanism is connected to one end of the fixing frame, and the rubber band clamping mechanism is connected to the top of the hip supporting mechanism; the force control mechanism is connected to the fixing frame, and the rubber band hanging mechanism is connected to the upper portion of the end, close to the hip supporting mechanism, of the force control mechanism. The two ends of the rubber band penetrate into the U-shaped sleeve and penetrate out of the inserting holes to be knotted. The tightening force of the rubber band is displayed on the t