Patent ID: 8371297

Claim:
A system for administering nitrous oxide to a patient, comprising: means for mounting a fluid control system and a breather bag to a medical chair which provides convenient and direct access to a medical practitioner; the fluid control system for controlling the flow of nitrous oxide and oxygen attached to the means for mounting the fluid control system; a nasal delivery interface system fluidly connected to the fluid control system, said nasal delivery interface system including a scavenging tube and a nitrous oxide and oxygen tube fluidly connected to a nasal delivery mask; the fluid control system including a mixed gas output connector fluidly connected to said single nitrous oxide and oxygen tube; a nitrous oxide and oxygen supply fluidly connected to the control system; a vacuum source fluidly connected to the scavenging tube for scavenging excess gases; the fluid control system includes a safety scavenge system, the safety scavenge system comprising: a mass airflow sensor for reading scavenging vacuum pressure fluidly connected to the scavenging tube before the vacuum source; a master controller in electrical communication with the mass airflow sensor for receiving the scavenging vacuum pressure reading from the mass airflow sensor which is compared to a predetermined range; a visual alarm in electrical communication with the master controller which instructs the visual alarm to activate if the scavenging vacuum pressure is less than a first predetermined range; an audio alarm electrical communication with the master controller which instructs the audio alarm to activate of the scavenging vacuum pressure is less than a second predetermined range; and a nitrous oxide valve fluidly connected to the nitrous oxide supply and in electrical communication with the master controller which shuts off the nitrous oxide shut-off valve when the scavenging vacuum pressure is less than a third predetermined range.