Importance

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Abstract

An indwelling device for passing fluids into or out of the body includes an inflatable cuff for lodging the device within a body passage. The inflatable cuff is inflated with a fluid such as saline. Prior to the inflation process a dye dispersant material such as methylene blue is incorporated in dry form within the inflation cuff and/or within an inflation lumen which leads to the inflation cuff and/or within a pilot balloon which is accessed by a source of saline fluid. Thus, as the cuff is inflated with saline, the methylene blue dissolves and disperses in the saline enabling the saline to take on the color of the methylene blue dye. A buffer is combined with the methylene blue to enhance the dispersal of the dye in the saline. Potential piercing of the expanded cuff after it is filled with methylene blue provides a blue stain or leak that is easily recognized as a sign of damage to the cuff. Correction steps can thus be taken to repair or replace the endotracheal tube as soon as the leak is recognized.

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First Claim