Oral cannula (2)

 GUEDEL  cannula


Currently The GUEDEL 'tube is preferred in use, named after Arthur E. GUEDEL (1883-1956), an American anesthetist. The tube consists of a flattened, hard plastic tube, which has on one side a round bearing surface (plate), which is followed by a straight about 2-3 cm long piece of pipe. Behind it begins a curve that first describes a semicircle upwards, which extends in an extended radius over the imaginary baseline of the straight piece about 1-2 cm down.

When the tube is inserted, the label comes to rest in front of the lips, the teeth lie on the straight piece. The arch corresponds to the bulge of the lower jaw with the tongue resting on it and reaches to the neck. This form clears the tongue from the airway and removes the respiratory barrier.

The less common Wendl tube is inserted through the nose. Therefore, it is a few inches longer than the Guedel tube and consists of a much softer and thinner rubber tube. He is also used by emergency services and medical services to secure respiratory tracts in unconsciousness.