Endotracheal tube with channel for delivering drugs
First Claim
1. A catheter, comprising:
- a first tube defining a first lumen;
a proximal end;
a distal end;
a first wall of a distensible material attached in a sealed fashion to said first tube within said first lumen between said proximal and distal ends and defining a second lumen having an inlet and an outlet, said outlet being near said distal end;
means for introducing liquid through said inlet into said second lumen while said catheter is positioned within a patient; and
means adjacent to said proximal end for providing pressurized fluid to said first lumen for compressing said second lumen for forcing said liquid towards and out of said outlet.
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Accused Products
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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Citations
15 Claims
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1. A catheter, comprising:
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a first tube defining a first lumen; a proximal end; a distal end; a first wall of a distensible material attached in a sealed fashion to said first tube within said first lumen between said proximal and distal ends and defining a second lumen having an inlet and an outlet, said outlet being near said distal end; means for introducing liquid through said inlet into said second lumen while said catheter is positioned within a patient; and means adjacent to said proximal end for providing pressurized fluid to said first lumen for compressing said second lumen for forcing said liquid towards and out of said outlet. - View Dependent Claims (2, 3, 4, 5, 6, 15)
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7. An endotracheal tube, comprising:
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a proximal end; a distal end; a central body having a first wall defining a first lumen; and a second wall attached to said first wall within said first lumen, forming a second lumen between said first and second walls, said second wall being formed from a distensible, elastic material; wherein said first wall includes an opening connected to said second lumen for introduction of medications therethrough into said second lumen, and wherein said second wall has a first side forming at least a portion of said first lumen and a second side forming at least a portion of said second lumen, such that pressure within said first lumen is transmitted through said second wall to said second lumen for propelling said medication towards said distal end. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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Specification