Tracheal tube assemblies

Details Tracheal tube assemblies Tracheal tube assemblies

A - Human Necessities

61

M

A61M 16/04 (2006.01)

Patent

CA 2063583

2063583 9112845 PCTABS00007 A tracheal tube assembly has an outer tube (1) and an inner cannula (2) with a patient end (22) 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 (2) has an external diameter less than the internal diameter of the outer tube (1) so that it is readily inserted. The inner cannula may be coextruded with an outer layer (20) of a low friction material such as a polyolefine.

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