Laryngeal mask with gastric-drainage feature

Details Laryngeal mask with gastric-drainage feature Laryngeal mask with gastric-drainage feature

1996-03-27

1997-05-27

Millin, Vincent

Surgery

Respiratory method or device

Respiratory gas supply means enters mouth or tracheotomy...

604 96, 604176, 12820714, A61M 1600

Patent

active

056322712

ABSTRACT:
A laryngeal-mark airway device has additional provision for extraction of gastric discharges while the mask seals the airway to the laryngeal inlet. A single elongate flexible small-bore drainage tube is so bonded to the posterior curvature of an elongate flexible airway as to enhance torsional stiffness in the combined airway tube and drainage tube. The airway tube has a customary fit to the air inlet of the domed backing plate of the mask, and a generally elliptical inflatable ring around the backing plate and lumen of the mask is configured to establish a continuous peripherally sealed engagement to the laryngeal inlet. The elongate flexible drainage tube has sealed entry into the distal end of the inflatable ring, distally traversing the same with sealed distal exit from the distal end of the inflatable ring. The distal end of the inflatable ring is so configured that, despite drainage-tube passage within and through the distal end of the inflatable ring, the inflatable capacity of the distal end of the inflatable ring remains substantially the same as for the full peripheral course of the inflatable ring.

REFERENCES:
patent: 4509514 (1985-04-01), Brain
patent: 4995388 (1991-02-01), Brain
patent: 5241956 (1993-09-01), Brain
patent: 5249571 (1993-10-01), Brain
patent: 5282464 (1994-02-01), Brain
patent: 5297547 (1994-03-01), Brain
patent: 5303697 (1994-04-01), Brain
patent: 5355879 (1994-10-01), Brain

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