Surgery – Truss – Pad
Patent
1975-06-02
1977-04-19
Truluck, Dalton L.
Surgery
Truss
Pad
128349B, A61M 2500
Patent
active
040182312
ABSTRACT:
A tracheal tube adapted for insertion into the trachea of a patient for introducing or removing gas. The tube includes a main inflatable cuff which surrounds the distal end of the tube. A gas passageway communicates at one end with the interior of the cuff, and the other end of the passageway is adapted to receive an inflating means, for delivering gas to inflate the cuff. The gas passageway includes a check valve, and a generally oval pilot balloon is in gas communication with the cuff via the passageway. The pilot balloon is longitudinally pre-stretched between its opposite end portions by means maintaining the pre-stretched condition. Accordingly the balloon in its non-inflated condition is characterized by a series of mutually spaced folds, extending longitudinally between the opposed ends. The ridges of the folds contrast with the troughs between folds, to provide a series of spaced, visually discernible markings which visually signal the non-inflated condition of the main cuff. The cuff itself is preferably pre-stretched between its secured ends, so that it, like the pilot balloon, is characterized in the non-inflated state by longitudinally extending folds. The main cuff is thus substantially free of transversely-oriented folds, in consequence of which the cuff is streamlined in the direction of tracheal insertion, to facilitate such operation.
REFERENCES:
patent: 2308484 (1943-01-01), Auzin et al.
patent: 2330399 (1943-09-01), Winder
patent: 2845930 (1958-08-01), Brown
patent: 3407817 (1968-10-01), Galleher
patent: 3848605 (1974-11-01), Penny et al.
patent: 3896816 (1975-07-01), Mattler
patent: 3901246 (1975-08-01), Wallace
Airco, Inc.
Bopp Edmund W.
Mathews H. Hume
Rathbun Roger M.
Truluck Dalton L.
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