Multifunctional tracheal cannula fixing device for tracheotomy

The invention discloses a multifunctional tracheal cannula fixing device for tracheotomy. The multifunctional tracheal cannula fixing device comprises a main fixing band and two auxiliary fixing bands, wherein the main fixing band and the and two auxiliary fixing bands are made of water-absorbing elastic materials; the main fixing band is composed of an outer layer and an inner layer; the two endsof the outer layer and the two ends of the inner layer are fixed together in a sealed mode, and a fusiform air bag is arranged in a cavity formed between the outer layer and the inner layer; the interior of the fusiform air bag is divided into a central channel in the middle position, a first side channel and a second side channel through two membranes; the first side channel and the second sidechannel are located on the upper side and the lower side; the two ends of the central channel are connected with the first side channel and the second side channel through pressure valves; one end ofthe fusiform air bag is con