Patent ID: 7721734

Claim:
A respiratory circuit inhalation apparatus for communicating a fluid stream between at least one air source and a patient, comprising: a central body portion that defines an interior fluid passageway that communicates the fluid stream; a mouthpiece forming a mouthpiece opening and integrally formed with and projecting directly from an end of the central body and that communicates the fluid stream between a mouth of the patient and the at least one air source; an integrally formed ambient fluid port with and projecting from the central body portion substantially opposite to the mouthpiece to communicate the fluid stream between the interior fluid passageway and the at least one air source; and a medication port formed about the central body portion having a baffle portion projecting into, and fluidly open within, the interior fluid passageway to define a baffle upstream side facing the mouthpiece and a baffle downstream side facing the ambient fluid port; wherein the interior fluid passageway is fluidly open to an exterior of the apparatus only at the mouthpiece opening, the ambient fluid port and the medication port; and further wherein the central body includes a narcelles region forming the fluid passageway to have an expanding dimension in extension toward the mouthpiece relative to a plane perpendicular to a central axis of the baffle portion such that the narcelles region defines a first maximum perpendicular dimension at a location aligned with the baffle downstream side and a second maximum perpendicular dimension at a location aligned with the baffle upstream side, the second maximum perpendicular dimension being greater than the first maximum perpendicular dimension; and further wherein the inhalation apparatus maintains the second maximum perpendicular dimension in the plane perpendicular to the central axis from the location aligned with the baffle upstream side to the mouthpiece opening.