| 摘要 |
A valved nasal cannula (10) insertable in a nose of an intended user (14) and usable to selectively restrict a flow of air flowing through the valved nasal cannula (10), the nose having a nostril (12) defining a nostril inlet (15) and a nostril vestibule (16) extending inwardly into the nose from the nostril inlet 15), the valved nasal cannula (10) comprising: - a cannula bo dy (18), the cannula body (18) defining a cannula passageway (20) extending therethrough, the cannula passageway (20) defining a passageway longitudinal axis (22), the cannula body (18) also defining a cannula proximal end (28) and a substantially longitudinally opposed cannula distal end (30), the cann ula body (18) being, at least in part, insertable in the nostril with the ca nnula proximal end (28) positioned inside the nostril vestibule (16) substan tially spaced apart from the nostril inlet (15) and the cannula distal end ( 30) positioned substantially adjacent the nostril inlet; - a valve operative ly coupled to the cannula body (18) for selectively restricting the flow of air through the cannula passageway (20); and - a protective grid (54), the p rotective grid (54) extending from the cannula body (18) across the cannula passageway (20), the protective grid (54) being located closer to the cannul a proximal end (28) than the valve. |
