Inhalation apparatus

1. An apparatus for administering a respirable gas to an individual, which individual includes a facial area containing a respiratory organ for receiving respirable gas and for expelling exhaust gas, and for scavenging exhaust gas from the individual, the apparatus comprising:

a body, the body is cup-shaped, includes a first side and a second side, and is receivable against the facial area for enclosing the respiratory organ, the body further includes an apex at a frontal midpoint of the body; an inhalation member extends from the first side of the body to the apex; an exhalation member extends from the second side of the body; a vacuum hose for coupling a vacuum source to the exhalation member; a scavenger valve coupled to the vacuum hose; the inhalation member for administering respirable gas into the body, the exhalation member for exhausting exhaust gas from the body into the vacuum hose, and the scavenger valve for exhausting exhaust gas therethrough from the vacuum hose to an atmosphere, wherein the exhalation member extends from the second side of the body to the apex such that the inhalation member and the exhalation member have a joint exterior surface at the apex that defines a half pipe structure that is elongate and that extends transversely along the body from the exhalation member to the inhalation member.

2. The apparatus according to claim 1 , further comprising the scavenger valve for disabling gas flow therethrough into the vacuum hose from the atmosphere.

3. The apparatus according to claim 1 , further comprising: the body includes an inner surface that defines an interior of body; the inhalation member further for administering respirable gas from an inlet of the inhalation member into the interior; the exhalation member further for exhausting exhaust gas through an inlet of the exhalation member from the interior to the vacuum hose; a concave surface contour in the inner surface of the body extends from an outlet of the inhalation member to the inlet of the exhalation member; the concave surface contour cooperates with the outlet of the inhalation member to form a laminar flow of respirable gas from the outlet of the inhalation member to the interior, when respirable gas is applied to the interior from the outlet of the inhalation member; and the concave surface contour cooperates with the inlet of the exhalation member to form a laminar flow of exhaust gas from the interior to the inlet of the exhalation member, when exhaust gas is exhaled into the interior.

4. The apparatus according to claim 1 , wherein the body has a protruding surface adjacent to the inhalation member such that the protruding surface extends transversely along the first side of the body.

5. An apparatus for administering a respirable gas to an individual, which individual includes a facial area containing a respiratory organ for receiving respirable gas and for expelling exhaust gas, and for scavenging exhaust gas from the individual, the apparatus comprising:

a body, the body is cup-shaped, includes a first side and a second side, and is receivable against the facial area for enclosing the respiratory organ, the body further includes an apex at a frontal midpoint of the body; an inhalation member extends from the first side of the body to the apex; an exhalation member extends from the second side of the body; a vacuum hose coupling a vacuum source to the exhalation member; a scavenger valve coupled to the vacuum hose between the exhalation member and the vacuum source; the inhalation member for administering respirable gas into the body, the exhalation member for exhausting exhaust gas from the body into the vacuum hose, and the scavenger valve for exhausting exhaust gas therethrough from the vacuum hose to an atmosphere between the exhalation member and the vacuum source, wherein the exhalation member extends from the second side of the body to the apex such that the inhalation member and the exhalation member have a joint exterior surface at the apex that defines a half pipe structure that is elongate and that extends transversely along the body from the exhalation member to the inhalation member.

6. The apparatus according to claim 5 , further comprising the scavenger valve for disabling gas flow therethrough into the vacuum hose from the atmosphere.

7. The apparatus according to claim 5 , further comprising: the body includes an inner surface that defines an interior of body; the inhalation member further for administering respirable gas from an inlet of the inhalation member into the interior; the exhalation member further for exhausting exhaust gas through an inlet of the exhalation member from the interior to the vacuum hose; a concave surface contour in the inner surface of the body extends from an outlet of the inhalation member to the inlet of the exhalation member; the concave surface contour cooperates with the outlet of the inhalation member to form a laminar flow of respirable gas from the outlet of the inhalation member to the interior, when respirable gas is applied to the interior from the outlet of the inhalation member; and the concave surface contour cooperates with the inlet of the exhalation member to form a laminar flow of exhaust gas from the interior to the inlet of the exhalation member, when exhaust gas is exhaled into the interior.

8. An apparatus for administering a respirable gas to an individual, which individual includes a facial area containing a respiratory organ for receiving respirable gas and for expelling exhaust gas, and for scavenging exhaust gas from the individual, the apparatus comprising:

a body, the body is cup-shaped, includes a first side and a second side, and is receivable against the facial area for enclosing the respiratory organ, the body further includes an apex at a frontal midpoint of the body; an inhalation member extends from the first side of the body to the apex; an exhalation member extends from the second side of the body; a respirator circuit, the respirator circuit including a delivery hose coupling a gas source to the inhalation member, a vacuum hose coupling a vacuum source to the exhalation member, and a scavenger valve coupled to the vacuum hose between the exhalation member and the vacuum source, the delivery hose for delivering respirable gas from the gas source to the inhalation member, the inhalation member for administering respirable gas into the body, the exhalation member for exhausting exhaust gas from the body into the vacuum hose, and the scavenger valve for exhausting exhaust gas therethrough from the vacuum hose to an atmosphere between the exhalation member and the vacuum source, wherein the exhalation member extends from the second side of the body to the apex such that the inhalation member and the exhalation member have a joint exterior surface at the apex that defines a half pipe structure that is elongate and that extends transversely along the body from the exhalation member to the inhalation member.

9. The apparatus according to claim 8 , further comprising the scavenger valve for disabling gas flow therethrough into the vacuum hose from the atmosphere.

10. The apparatus according to claim 8 , further comprising: the body includes an inner surface that defines an interior of body; the inhalation member further for administering respirable gas from an inlet of the inhalation member into the interior; the exhalation member further for exhausting exhaust gas through an inlet of the exhalation member from the interior to the vacuum hose; a concave surface contour in the inner surface of the body extends from an outlet of the inhalation member to the inlet of the exhalation member; the concave surface contour cooperates with the outlet of the inhalation member to form a laminar flow of respirable gas from the outlet of the inhalation member to the interior, when respirable gas is applied to the interior from the outlet of the inhalation member; and the concave surface contour cooperates with the inlet of the exhalation member to form a laminar flow of exhaust gas from the interior to the inlet of the exhalation member, when exhaust gas is exhaled into the interior.