Patent ID: 9743999
Date: 2017-08-29
CPC Classifications: A61C,A61N

Claim:
1. An air appliance for dental prophylaxis comprising: a compressed air source for supplying compressed air; a hand piece in fluid communication with said compressed air source, said hand piece having a dental spray tip member configured for dental application to a patient's mouth, said hand piece having a compressed air delivery tube operable to receive said compressed air and deliver at least said compressed air to said dental spray tip member; a component material container operable to contain a component material; and a component pathway defining fluid communication between said component material container and said dental spray tip member of said hand piece, said component pathway configured to deliver said component material to said dental spray tip member, said pathway comprising at least an upstream one-way valve and a downstream one-way valve disposed in series together forming at least one stage between said one-way valves, said at least one stage capturing at least a portion of said component material from said component material container during operation, said upstream one-way valve preventing flow of said component material within said at least one stage from flowing into said component material container, the component pathway is configured such that said component material and said compressed air are unmixed in the component pathway and are initially mixed outside of the distal spray tip member, the component pathway, and the delivery tube.