Surgery – Respiratory method or device – Respiratory gas supply means enters mouth or tracheotomy...
Patent
1991-02-19
1992-06-09
Burr, Edgar S.
Surgery
Respiratory method or device
Respiratory gas supply means enters mouth or tracheotomy...
12820026, 604 94, A61M 1600, A62B 906
Patent
active
051198118
ABSTRACT:
A tracheal tube assembly has an outer tube and an inner cannula with a patient end that is flared outwardly to a diameter greater than the internal diameter of the outer tube. When inserted in the outer tube, the patient end of the inner cannula is deformed inwardly and forms a wiping seal. The remainder of the inner cannula has an external diameter less than the internal diameter of the outer tube so that it is readily inserted. The inner cannula may be coextruded with an outer layer of a low friction material such as a polyolefine.
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Inglis Timothy J. J.
Millar Michael R.
Asher Kimberly L.
Burr Edgar S.
Smiths Industries Public Limited Company
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