Anesthesia administration mask and eye shield

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

• an inspiratory gas line having a machine end and a patient end portion, the machine end being capable of being fluidly coupled to the inspiratory gas input of the ventilation system, and the patient end portion being configured for being received within the naris of the patient for delivering inspiratory gas to the naris of the patient,
• a face mask 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,
• a vent for allowing gas to pass between the inside air space and the outside air space,
• an exhaust port 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, the exhaust port including an elbow, and
• an exhaust line having a machine end and a patient end, the patient end being connected to the elbow of the exhaust port for scavenging gases from the inside air space of the dome portion, the exhaust line being positioned by the elbow to extend over the forehead of the patient
• wherein the exhaust port and vent are canable 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 and
• wherein the patient end portion comprises a flexible cannula having a source end disposed in the outside air space, a middle portion slidably but snugly received by, and extending through an inspiratory port in the face mask, and a patient end configured for being received within the naris of the patient for delivering inspiratory gas to the naris of the patient.

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

• an inspiratory gas line having a machine end and a patient end portion, the machine end being capable of being fluidly coupled to the inspiratory gas input of the ventilation system, and the patient end portion being configured for being received within a naris of the patient for delivering inspiratory gas to the naris of the patient,
• 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, the face mask further including an inspiratorv gas port and an exhaust port;
• the patient end portion comprising a flexible cannula having a source end disposed in the outside air space, a middle portion extending through the dome portion, and a patient end configured for being received within the naris of the patient for delivering inspiratory gas to the naris of the patient, the inspiratory gas port of the face mask being sized to slidably receive the flexible cannula for permitting the user to slidably move the cannula relative to the face mask to place the patient end of the flexible cannula in a desired position within the naris of the patient,
• a vent for allowing gas to pass between the inside air space and the outside air space, and
• 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 capable of being coupled to a ventilation system comprising an inspiratory gas input for delivering gas to a patient and an exhaust gas output for delivering gas from the 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, and an exhaust port for allowing gas to pass from the inside air space 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, the exhaust port including an elbow;
• 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;
• and
• 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 elbow of the exhaust port for scavenging gases from the inside air space of the dome portion, the exhaust line being positioned by the elbow to extend over the forehead 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 capable of being coupled to a ventilation system comprising an inspiratory gas input for delivering gas to a patient and an exhaust gas output for delivering gas from the patient to the ventilation system, the anesthesia delivery 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 flow vent for allowing the flow of gas into 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 portion, 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 portion, the patient end portion comprising a flexible cannula having a source end disposed in the outside air space, a middle portion slidably but snugly received in the inspiratory port to extend through the dome portion, and a patient end configured for being received within the naris of the patient for delivering inspiratory gas to the naris of the patient,
• 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;
• 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.

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

• an inspiratory gas line having a machine end and a patient end portion, the machine end being capable of being fluidly coupled to the inspiratory gas input of the ventilation system, and the patient end portion being configured for being received within the naris of the patient for delivering inspiratory gas to the naris of the patient,
• a face mask 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,
• the patient end portion comprising a flexible cannula having
• a source end disposed in the outside air space,
• a middle portion extending through the dome portion, and having a length disposed within the dome portion, wherein the length of the middle portion disposed within the dome portion is variable by the user, and
• a patient end disposed within the dome portion and being configured for being received within the naris of the patient for delivering inspiratory gas to the naris of the patient,
• a vent for allowing gas to pass between the inside air space and the outside air space, and
• an exhaust port 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.