Laparoscopic double-J-tube introducer and use method of laparoscopic double-J-tube introducer

The device comprises a fixed open groove and a movable open groove, the movable open groove is slidably connected in the fixed open groove in a sleeved mode, a limiting check ring is arranged on the inner side wall of the far end of the fixed open groove, and an opening in the near end of the movable open groove extends outwards to form a clamping ring; the clamping ring can be movably clamped to the limiting check ring in a matched mode. A pipeline passage is arranged on the inner side wall of the near end of the movable open slot, a tightening rope body is arranged in the pipeline passage in a matched and penetrating manner, and the tightening rope body can be matched, tightened and fixed on the outer side wall of the double-J pipe passing through the movable open slot through a strainer; the near end of the movable open groove is further connected with a traction rope body, and the movable open groove can slide and move in the fixed open groove through traction of the traction rope body. The invention furt