[A rational naso-tracheal catheter].

For the last 4 years, the author has been using, especially for oral surgery, a naso-tracheal catheter (Rosso catheter), the intra-facial part of which has an S-shape which follows the curves of the airway and the outer part of which, in reinforced latex, permits attachment to the face and easy, reliable connection to the anesthetic apparatus. This catheter is easy to introduce, keeps well in place and frees perfectly the operative field and gives the anesthetist satisfactory mastery of the patient's ventilation.