Patent ID: 8813750
Filing Date: 2014-08-26
Classification: A61M,Y10T

Abstract:
1. A tracheal tube comprising: a tube defining a passageway for transferring respiratory gas to a patient's lungs, the tube comprising: a distal end portion having a distal inner diameter and a distal outer diameter; an intermediate portion connected to the distal end portion and having an intermediate inner diameter and an intermediate outer diameter; and a proximal end portion connected to the intermediate portion and having a proximal inner diameter and a proximal outer diameter, wherein the distal end portion, the intermediate portion, and the proximal end portion are in fluid communication with one another, and wherein the intermediate portion is adapted to change both the intermediate inner diameter and the intermediate outer diameter relative to the distal inner diameter and the distal outer diameter and relative to the proximal inner diameter and proximal outer diameter to allow the intermediate outer diameter to contact the patient's tracheal walls, and wherein at least one layer of the intermediate portion having the intermediate inner diameter forms a portion of the passageway for transferring respiratory gas to the patient's lungs to directly contact the respiratory gas, wherein the intermediate inner diameter in a relaxed state is smaller than the distal inner diameter and the proximal inner diameter.