Abstract: Disclosed is a device for coupling a respiratory cannula with a medical effector system. The coupling device consists of a plate with several ports for receiving respired gases from the respiratory cannula and for delivering oxygen or air to the respiratory cannula. The coupling device may directly or indirectly deliver the respired gases to a capnometry device located in the medical effector system. Also included is a port for delivering an audio signal from the medical effector system to an audio earpiece disposed proximate the ear of a patient.

Abstract: A bite block assembly for use during a diagnostic, surgical or other medical procedure is disclosed. This device includes a bite block body for insertion into the mouth of a patient containing two passageways, the first, a through passageway, positioned to receive a medical instrument to be inserted into the patient, the second, an air-sampling passageway, provides a pathway for exhaled air to exit the mouth of the patient. The air-sampling passageway is constructed to receive a gas sampling tube partially disposed in the air-sampling passageway or completely disposed in the air-sampling passageway. The gas sampling tube connects a respiratory cannula with gas sampling port, located on the face of the patient to the air-sampling passageway of the bite block.