Nasal cannula with inflatable plenum chamber
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United States of America Patent
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Aug 13, 2002
Grant Date -
N/A
app pub date -
Oct 20, 2000
filing date -
Oct 20, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A nasal cannula for delivering a breathing gas includes a rigid support adapted for placement at least partly beneath the nose of a user, an inflatable plenum chamber mounted on the rigid support, and a pair of nares elements mounted on the inflatable plenum chamber for insertion into the nostrils of the user. The inflatable plenum chamber includes a flexible membrane mounted on the rigid support. The flexible membrane can be preformed to define laterally spaced humps for mounting individual nares element and can further be pleated. Alternatively, a pair of inflatable plenum chambers can be separately mounted on the rigid support.
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