Patent ID: 6918391

Claim:
An endotracheal tube for intubation within a patient's airway to prevent obstruction of the airway during a medical procedure, said endotracheal tube comprising an elongated tubular member having a proximal portion and a distal portion, said proximal portion remaining external the patient's airway and said distal portion received in the patient's airway during intubation; a main lumen defined by said elongated tubular member for exchange of respiratory gases or medicinal gases consequent said medical procedure comprising a major transverse area of said tubular member; a secondary lumen defined in a wall of said tubular member in selective communication with an air source connected to said proximal portion and a balloon cuff disposed on said distal portion for inflation of said balloon cuff; a tertiary lumen defined in said wall of said tubular member adapted to communicate a sound wave through an air medium between an ausculatory receiver disposed on said distal portion and an external ausculatory device coupled with said tertiary lumen at said proximal portion.