US Patent 11877984 Saliva solution metering apparatus with delivery tube retaining mouthpiece

An apparatus for delivering a metered stream of saliva solution includes a delivery tube for drawing a saliva solution from a solution source; a pumping and metering device connected to the delivery tube for pumping saliva solution from the solution source through the delivery tube and delivering the solution to a user mouth, the delivery tube having a delivery tube upstream segment for extending from the solution source to the device, and a delivery tube downstream segment extending from the device to a delivery tube free end for placement in a user mouth; and a mouthpiece mounted to the delivery tube free end for engaging and securely retaining the delivery tube free end within a user mouth until released.