Tracheal tube with expandable cuff system

Details Tracheal tube with expandable cuff system Tracheal tube with expandable cuff system

1975-02-03

1979-05-29

Michell, Robert W.

Surgery

Truss

Pad

A61M 2500

Patent

active

041564286

ABSTRACT:
A cuff system particularly useful with tracheal tubes and the like including an expandable cuff insertable into a patient's trachea for sealing engagement with the trachea wall. The cuff is formed around an elongated tubular member by a flaccid readily deformable non-distensible wall. A liquid reservoir comprised of a flaccid readily deformable wall communicates with the cuff via a filling pipe whose ends respectively open into the reservoir and cuff. The reservoir is mounted in a semi-rigid squeezable protective housing. The cuff system interior volume enclosed by the reservoir, filling pipe, and cuff contains no gas and is supplied with the cuff evacuated and lying against the tubular member and with the reservoir and filling pipe containing a quantity of liquid. A selectively operable valve is provided to control flow through the filling pipe. In use, after intubation of the tracheal tube into the trachea, the valve is opened, the reservoir is elevated above the trachea, and the housing is squeezed to cause the liquid to flow from the reservoir into the cuff thereby expanding the cuff wall toward the tracheal wall. After sufficient liquid has flowed into the cuff to sealingly engage the cuff wall against the tracheal wall, the reservoir is lowered to a desired level above the elevation of the cuff. The valve is then closed. To deflate the cuff prior to extubation, the reservoir is placed below the cuff and the valve is released. The liquid then flows out of the cuff by siphoning action.

REFERENCES:
patent: 3057347 (1962-10-01), McGee
patent: 3173418 (1965-03-01), Baran
patent: 3322126 (1967-05-01), Rusch et al.
patent: 3394705 (1968-07-01), Abramson
patent: 3407817 (1968-10-01), Galleher, Jr.
patent: 3599642 (1971-08-01), Tindel
patent: 3766927 (1973-10-01), Jackson
patent: 3848605 (1974-11-01), Harautuneian et al.
patent: 3854484 (1974-12-01), Jackson

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