Endotracheal tube having outer and inner cannulae

摘要

Abstract An endotracheal tube apparatus includes an outer cannula having first and second ends. A fenestration is provided along the length of the outer cannula between the first and second ends. An inflatable cuff is formed on the outer cannula between the fenestration and the second end. A first conduit extends from the cuff for introducing an inflating fluid into the cuff when it is desired to inflate the cuff and removing inflating fluid from the cuff when it is desired to deflate the cuff. An inner cannula is sized selectively to be inserted into, and removed from, the outer cannula. The inner cannula includes a second conduit to evacuate a region of a trachea of a wearer adjacent the cuff. The second conduit includes an opening which lies adjacent the closest point in the fenestration to the cuff when the inner cannula is selectively inserted into a use orientation in the outer cannula. A tracheal tube apparatus includes a cannula having first and second ends. An inflatable cuff is formed on the cannula between the first and second ends. A conduit extends from the cuff for introducing an inflating fluid into the cuff when it is desired to inflate the cuff and removing inflating fluid from the cuff when it is desired to deflate the cuff. A gauge for indicating the inflation pressure of the cuff is coupled in the conduit. 't C (0 C) ~ C coo U') c-