Endotracheal tube with channel for delivering drugs

Surgery – Respiratory method or device – Respiratory gas supply means enters mouth or tracheotomy...

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604280, 604264, 604 43, 12820714, A61M 1600

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active

049553755

ABSTRACT:
An endotracheal tube having a first lumen for ventilation, a second lumen having an elastic, collapsible wall attached to an inner wall of the tube, and optionally a third lumen for supplying an inflatable balloon at a distal end of the tube. The second lumen includes a port for applying medications thereto, and a distal end for expelling such medications at the distal end of the tube. The wall of the second lumen is connected at two line joints to the inner wall of the tube, and includes a flared distal end portion which is tacked down for preventing maintained inflation. The second lumen wall thus forms a boundary between the first lumen and the second lumen, and allows transmission of pressure from the former to the latter. When the tube is inserted into a patient, medication can be applied through the port of the second lumen. Once the medication enters the lumen, pressure within the first lumen collapses the second lumen wall from the proximal end towards the distal end, thus propelling the medication towards the flared portion. The second lumen wall is preferably elastic, such that the elasticity alone is sufficient to force the medication within the second lumen distally. As the medication is forced out of the flared distal end, it is atomized, and thus in condition for application to the bronchi. The tube may also be used for cardiac or other applications.

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