| 摘要 |
A nasal cannula (1100) comprising: a base portion (1105) defining a gas p assageway and one or more nozzles (1126, 1131) defining a second gas passage way in gaseous communication with the first gas passageway for directing a t herapeutic flow of gas to a user's nares. The nasal cannula may include one or more sensors for measuring the properties of gas within a user' s nares. The nozzle may be a nasal insert that is inserted into the user's nares; rec esses or grooves are provided for preventing sealing of the nasal insert wit h the nare. The nozzle may be shaped to avoid insertion into the user's nare s, thus preventing sealing with the nares. A stop (1190) may be positioned b etween two nozzles to engage a user' s columella and prevent the nozzles fro m inserting into the user's nares. Elongate extensions (1172, 1170) are prov ided for inserting into the user' s nares and supporting sensors for measuri ng gas properties therein. |
