Tracheal tube assemblies
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 7, 1995
Grant Date -
N/A
app pub date -
Apr 29, 1992
filing date -
Feb 21, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A tracheal tube assembly comprises an outer tube and an inner cannula that is insertable within and removable from the outer tube. The inner cannula has an inner surface of a flexible plastic material such as PVC to which respiratory secretions cling. The outer surface of the cannula is of a material having a lower friction than the inner surface and may be a helical filament or a continuous layer. The machine end of the inner cannula projects beyond the outer tube to form a flexible portion which is terminated with a coupling.
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Family
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Cited Art Landscape
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