Patent ID: 11864960
Assignee: CROSSTEX INTERNATIONAL, INC.
Field: Medical technology (Instruments)
Classification: CPC A  F | IPC A  F

Claim 14:
15. A dental suction system, comprising:
an ejector tube; and
a valve assembly comprising:
a first valve body having a first inlet configured for connection with the ejector tube, a first outlet, and a first fluid flow path extending between the first inlet and the first outlet;
a second valve body having a second inlet, a second outlet configured for direct connection with a vacuum hose, and a second fluid flow path extending between the second inlet and the second outlet;
a backflow prevention device captured between the first and second valve bodies, the backflow prevention device being movable to control fluid flow along at least one of the first and second fluid flow paths;
a valve plug positioned at least partially within the second valve body, the valve plug including a through-passage, the valve plug being displaceable relative to the second valve body to selectively alter a flow of fluid along at least one of the first and second fluid flow paths; and
a ramped surface positioned in the second flow path between the valve plug and the second outlet of the second valve body; wherein an outlet opening of the second outlet has a larger cross-sectional area than a cross-sectional area of the through-passage in the valve plug.