| 主权项 |
1. An airway adaptor comprising:
an airway case; an expired gas guiding portion which is connected to the airway case to introduce a respiratory gas to the airway case; a partition wall; an elongated first passage adapted to introduce the respiratory gas from the expired gas guiding portion to the airway case; and an elongated second passage adapted to discharge the respiratory gas from the elongated first passage, which has been introduced to the airway case and returned in the airway case without being communicated with the expired gas guiding portion, to outside of the airway case, wherein the partition wall partitions the elongated first passage and the elongated second passage such that a portion of the elongated first passage is parallel to a portion of the elongated second passage, and wherein the respiratory gas in the portion of the elongated first passage flows in a first direction and the respiratory gas in the portion of the elongated second passage flows in a second direction opposite and in reverse with respect to the first direction. |
