| 摘要 |
A light weight securable nasal cannula and system including the nasal cannula for delivering therapeutic gas, e.g., oxygen, to the nostrils of a patient. The nasal cannula may include a hollow body having at least one inhale aperture defined therein and at least one nasal insert therein. Each nasal insert may include a nasal insert tube associated with the nasal insert of the body. Each nasal insert may further include at least one exhale aperture adjacent to the nasal insert tube, wherein each of the exhale apertures, either alone or in combination, has a cross-sectional area greater than a cross-sectional area of the nasal insert tube. Each nasal insert may further include an annular sleeve surrounding the nasal insert tube and the at least one exhale aperture, the annular sleeve including a contact surface formed thereon and configured for placement against an inside surface of the nostril to achieve a friction fit.
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