The invention provides a threaded
anal dilatation device. The threaded
anal dilatation device comprises a sleeve, wherein first threads are arranged on the outer wall of the sleeve; a plurality of grooves are formed in the inner wall of the sleeve in the
peripheral direction; a tube core can be inserted in the sleeve; one end, which penetrates out of the sleeve, of the tube core becomes a
nose cone; second threads are arranged on the outer wall of the
nose cone; and a plurality of projections are arranged on the outer wall of the tube core in the
peripheral direction and can be respectively inlaid in the grooves in a matched manner. The first threads are arranged on the outer wall of the sleeve of the threaded
anal dilatation device, the second threads are arranged on the outer wall of the
nose cone, a mode of directly inserting an anal dilation device into an
anus in the prior art is changed into a mode of rotatably inserting the anal dilation into the
anus; owing to the threads which have
hooking effect, the sleeve cannot slip out of the
anus of a patient easily, steps of stitching and taking out stitches are omitted,
surgical procedures are simplified, and pain of the patient is relieved. In addition, a doctor only needs to hold the tube core of the threaded anal dilation device to rotate with a single hand, then reliable projection and groove gripping structure drives the sleeve to rotate synchronously, and the threaded anal dilatation device is simple to operate.