Surgery – Truss – Pad
Patent
1974-02-26
1976-01-13
Pace, Channing L.
Surgery
Truss
Pad
128349BV, A61M 1600
Patent
active
039318222
ABSTRACT:
A multi-cuff endo-tracheal tube which minimizes the irritation to the trachea by alternately inflating one or the other of two cuffs. A short period of time after one cuff is inflated the previously inflated cuff is deflated. This removes the possible source of irritation on the trachea at the point of contact with the second cuff. After the first cuff has been in operation for a predetermined period of time, the second cuff is inflated and after another short interval, the first cuff is deflated. A control system alternately and sequentially inflates and deflates the cuffs in the proper sequence, automatically. The control system is fail-safe in that, in the event of cuff rupture, overpressurization, or electrical failure, one or the other of the cuffs remains inflated to seal the endo-tracheal tube and the control system alerts attendant personnel.
REFERENCES:
patent: 3529596 (1968-09-01), Garner
patent: 3794026 (1974-02-01), Jacobs
crosby, W. M., "Automatic Intermittent Inflation of Tracheostomy-Tube Cuff", In the Lancet, No. 7358, Vol. II for 1964, p. 509, Sept. 5, 1964.
Salpekar, P. D., "New Apparatus for Chest Units", IN Brit. Med. J., 1966, Vol. 1, 296, Jan. 29, 1966.
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