Anesthesia gas delivery and monitoring system

A gas delivery and monitoring apparatus, comprising:

• (a) a support member having a longitudinal axis, a proximal end, and a distal end opposite and spaced apart from the proximal end;
• (b) a bite block sized to be disposed within a mouth of a subject between at least one tooth of an upper jaw of the subject and at least one tooth of a lower jaw of the subject, the bite block having a proximal end and a distal end opposite and spaced apart from the proximal end, wherein the bite block has a first side extending between the proximal end and the distal end, a second side opposite and spaced apart from the first side, a lingual side extending between the first side and the second side, and a buccal side opposite and spaced apart from the lingual side,
• (c) a first elongated conduit defining an exhalation capture flow path extending from a capture inlet and terminating in an outlet port, wherein the capture inlet includes an elongated slot defined by the lingual side of the bite block and extends in a direction from the first side to the second side of the bite block;
• (d) a second elongated conduit defining a gas delivery flow path extending from an inlet port into the bite block, and terminating in a gas delivery port such that both the gas delivery port and the capture inlet are located in the mouth of the subject when the bite block is inserted in the mouth of the subject during use;
• and
• (e) a bridge extending between the proximal end of the bite block and the proximal end of the support member.