| 摘要 |
There is provided a cannula (10) which may include a spacer (25) adapted to maintain a minimum distance between at least a portion of an oral cavity and at least a portion of an oral breath collector (22) and at least one nasal breath collector (18). There is also provided a method for sampling exhaled breath including positioning a cannula on a face of a subject, wherein the cannula may include a spacer adapted to maintain a minimum distance between at least a portion of an oral cavity and at least a portion of an oral breath collector and at least one nasal breath collector. |
