Oral care implement with liquid delivery system
First Claim
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1. An oral care implement comprising;
- a head extending along a longitudinal axis and having tooth cleaning elements, a reservoir for storing a liquid, the reservoir being connected to an end of a channel, an outlet disposed in the head, a piezoelectric pump disposed in the head beneath the tooth cleaning elements to deliver the liquid from the reservoir via the outlet, the piezoelectric pump having an input port connected to another end of the channel and an output port joined to the outlet, a transverse plane substantially perpendicular to the longitudinal axis, the transverse plane intersecting the piezoelectric pump and at least one of the tooth cleaning elements, a valve that allows the liquid to flow only toward the outlet, and wherein the reservoir is a collapsible bag or container that ensures that negative pressure does not build up in the reservoir.
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Abstract
An oral care implement (1) includes a head (12), a handle (10), a neck portion (11) connecting the head and the handle, and a reservoir (15) which contains at least one active agent. The implement has an activator (22) for activating a delivery device which delivers the active agent to one or more outlets (50). A powered delivery device (18) disposed in the head to deliver a liquid from the reservoir via the outlet. A wide variety of types of active agents may be administered at appropriate and accurate doses for therapeutic, hygienic, and/or other benefit.
29 Citations
15 Claims
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1. An oral care implement comprising;
- a head extending along a longitudinal axis and having tooth cleaning elements, a reservoir for storing a liquid, the reservoir being connected to an end of a channel, an outlet disposed in the head, a piezoelectric pump disposed in the head beneath the tooth cleaning elements to deliver the liquid from the reservoir via the outlet, the piezoelectric pump having an input port connected to another end of the channel and an output port joined to the outlet, a transverse plane substantially perpendicular to the longitudinal axis, the transverse plane intersecting the piezoelectric pump and at least one of the tooth cleaning elements, a valve that allows the liquid to flow only toward the outlet, and wherein the reservoir is a collapsible bag or container that ensures that negative pressure does not build up in the reservoir.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
Specification