Bladder, neck and urethra auxiliary anastomat and outer sheath and obturator of bladder, neck and urethra auxiliary anastomat

The utility model discloses an outer sheath of a bladder, neck and urethra auxiliary anastomat. The inner side wall of the front end of the outer sheath is evenly provided with a plurality of positioning structures used for positioning needle tips of surgical curved needles. A plurality of positioning structures used for positioning needle tips of surgical curved needles are evenly arranged on theinner side wall of the front end of the sheath, a doctor can conveniently and accurately find the needle applying position through auxiliary positioning of the positioning structures, perfect equal needle distance and mucosa-to-mucosa suturing are achieved, the occurrence rate of postoperative urethral stenosis and urinary leakage complications is reduced, and the surgical difficulty is lowered;according to the obturator, the obturator is movably arranged in the outer sheath, the outer sheath is provided with a bayonet, the obturator is provided with a bayonet lock which is matched with thebayonet to lock the obturat