초록 ▼

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 o

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.

대표청구항 ▼

1. A nasal cannula for delivering a breathing gas to a user, said nasal cannula comprisinga rigid support adapted for placement at least partly beneath the nose of the user; an inflatable plenum chamber mounted on said rigid support, said inflatable plenum chamber having at least one gas inlet and a

1. A nasal cannula for delivering a breathing gas to a user, said nasal cannula comprisinga rigid support adapted for placement at least partly beneath the nose of the user; an inflatable plenum chamber mounted on said rigid support, said inflatable plenum chamber having at least one gas inlet and at least one gas outlet; and at least one nares element mounted on said inflatable plenum chamber, said nares element having a gas flow passage therethrough in communication with said gas outlet.