Tren'delenburg's caim'ula

[Fried rich Trendelenburg, German surgeon, *i844.] A cannula covered with a dilatable rubber bag which occludes the trachea, applied after tracheotomy to prevent the entrance of blood during operations on the mouth or larynx. T's. opera'tion, (1) ligation of the saphena magna for the cure of varicose veins; (2) excision of varicose veins; (3) synchondroseotomy. T.'s pos i'tion, a supine position on the operating table or the bed, inclined at an angle of 45°, so that the pelvis is higher than the head; a umed during and after operations in the pelvis. T.'s symp'tom, a waddling gait in paresis of the gluteal muscles, as in progre ive muscular dystrophy. T.'s tampon, T.'s cannula. T.'s test, the leg is raised above the cosity and incompetence of the valves the veins will at once become distended.