It is generally curved in shape. Its shape is designed according to the anatomical structure of the human oropharynx, and it can be placed in the oropharynx relatively closely, effectively preventing the tongue from falling backward and blocking the airway.
It is made of soft medical plastic or rubber to reduce damage to the tissues of the oral cavity and pharynx. At the same time, it has a certain degree of toughness to maintain its stable shape and facilitate ventilation.
It usually has a wide flange located outside the oral cavity. Its main function is to prevent the airway from sliding completely into the oral cavity, and it also makes it convenient for medical staff to fix and operate.
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