Dental anesthesia administration mask and eye shield

An anesthesia delivery device for use on a patient having a mouth and a nose having a naris, the delivery device being capable of being coupled to a ventilation system having an inspiratory gas input for delivering gas to the patient and an exhaust gas output for delivering gas from a patient to the ventilation system, the anesthesia device comprising:

• an inspiratory gas line having a machine end and a patient end, the machine end being capable of being fluidly coupled to the inspiratory gas input of the ventilation system, and the patient end being configured for being received within the naris of the patient for delivering inspiratory gas to the naris of the patient, and a facemask comprising
• a dome portion sized to cover the patient's nose without covering the patient's mouth, the dome portion defining an inside air space between the patient's nose and the dome portion, and an outside air space exterior of the dome portion,
• an exhaust port;
• an exhaust connector connected to the exhaust port of the face mask and capable of being fluidly coupled to the exhaust gas output of the ventilation system for allowing gas to pass from the inside air space to the exhaust gas output of the ventilation system;
• wherein the exhaust port and vent are capable of cooperatively exerting a negative pressure on the outside air space adjacent to the face mask for preventing inspiratory gases from entering the outside air space adjacent to the face mask.

An anesthesia delivery device for use on a patient having a mouth and a nose having a naris, the delivery device being capable of being coupled to a ventilation system having an inspiratory gas input for delivering gas to the patient and an exhaust gas output for delivering gas from a patient to the ventilation system, the anesthesia device comprising:

• a face mask comprising
• a dome portion having a lower edge, the dome portion being sized to cover the patient's nose without covering the patient's mouth, the dome portion defining an inside air space between the patient's nose and the dome portion, and an outside air space exterior of the dome portion,
• a cushion member attached to the lower edge of the dome portion
• a vent for allowing gas to pass between the inside air space and the outside air space,
• an exhaust port for allowing gas to pass from the inside air space of the dome portion;
• and
• an inspiratory port;
• an inspiratory gas line having a machine end and a patient end, the machine end being located in the outside air space and being capable of being fluidly coupled to the inspiratory gas input of the ventilation system, and the patient end being located in the inside air space and being configured for being received within the naris of the patient for delivering inspiratory gas to the naris of the patient, the inspiratory gas line passing from the outside air space into the inside air space through the inspiratory port;
• an exhaust line having a machine end and a patient end, the machine end being capable of being fluidly coupled to the exhaust gas output of the ventilation system, and the patient end being connected to the exhaust port for scavenging gases from the inside air space of the dome portion;
• an eye shield having a shield attachment mechanism for attaching the eye shield to the face mask such that the eye shield covers the eyes of the patient;
• wherein the exhaust port and vent are capable of cooperatively exerting a negative pressure on the outside air space adjacent to the face mask for preventing inspiratory gases from entering the outside air space adjacent to the face mask.

An anesthesia delivery device for use on a patient having a mouth and a nose having a naris, the delivery device being capable of being coupled to a ventilation system having an inspiratory gas input for delivering gas to the patient and an exhaust gas output for delivering gas from a patient to the ventilation system, the anesthesia device comprising:

• a face mask comprising
• a dome portion having a lower edge, the dome portion being sized to cover the patient's nose without covering the patient's mouth, the dome portion defining an inside air space between the patient's nose and the dome portion, and an outside air space exterior of the dome portion,
• a cushion member attached to the lower edge of the dome portion
• a flow vent for allowing the flow of gas into the inside air space through the vent, but not allowing the flow of gas out of the inside air space through the vent,
• an exhaust port for allowing gas to pass from the inside air space of the dome portion;
• and
• an inspiratory port;
• an inspiratory gas line having a machine end and a patient end, the machine end being located in the outside air space and being capable of being fluidly coupled to the inspiratory gas input of the ventilation system, and the patient end being located in the inside air space and being configured for being received within the naris of the patient for delivering inspiratory gas to the naris of the patient, the inspiratory gas line passing from the outside air space into the inside air space through the inspiratory port;
• an exhaust line having a machine end and a patient end, the machine end being capable of being fluidly coupled to the exhaust gas output of the ventilation system, and the patient end being connected to the exhaust port for scavenging gases from the inside air space of the dome portion;
• an eye shield having a shield attachment mechanism for attaching the eye shield to the face mask such that the eye shield covers the eyes of the patient;
• wherein the exhaust port and vent are capable of cooperatively exerting a negative pressure on the outside air space adjacent to the face mask for preventing inspiratory gases from entering the outside air space adjacent to the face mask.

An anesthesia delivery device for use on a patient having a mouth and a nose having a naris, the delivery device being capable of being coupled to a ventilation system having an inspiratory gas input for delivering gas to the patient and an exhaust gas output for delivering gas from a patient to the ventilation system, the anesthesia device comprising:

• a face mask comprising
• a dome portion having a lower edge, the dome portion being sized to cover the patient's nose without covering the patient's mouth, the dome portion defining an inside air space between the patient's nose and the dome portion, and an outside air space exterior of the dome portion,
• a cushion member attached to the dome portion
• an exhaust port for allowing gas to pass from the inside air space of the dome portion;
• and
• an inspiratory port;
• an inspiratory gas line having a machine end and a patient end, the machine end being located in the outside air space and being capable of being fluidly coupled to the inspiratory gas input of the ventilation system, and the patient end being located in the inside air space and being configured for being received within the naris of the patient for delivering inspiratory gas to the naris of the patient, the inspiratory gas line passing from the outside air space into the inside air space through the inspiratory port;
• a bifurcated exhaust line having a patient end, a first machine end and a second machine end, wherein gas can flow freely between the patient end, the first machine end and the second machine end, the patient end being coupled to the exhaust port of the face mask, the first machine end being capable of being fluidly coupled to the exhaust gas output of the ventilation system, and the second machine end being coupled to a one-way flow valve allowing the flow of gas into the exhaust line through the second machine end but not allowing the flow of gas out of the second machine end through the flow valve;
• and
• an eye shield having a shield attachment mechanism for attaching the eye shield to the face mask such that the eye shield covers the eyes of the patient;
• wherein the exhaust port and vent are capable of cooperatively exerting a negative pressure on the outside air space adjacent to the face mask for preventing inspiratory gases from entering the outside air space adjacent to the face mask.