Toothbrush employing an acoustic waveguide

A - Human Necessities – 46 – B

Patent

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Details

A46B 9/04 (2006.01) A46B 13/02 (2006.01) A61C 17/20 (2006.01) A61C 17/22 (2006.01)

Patent

CA 2542393

A power toothbrush (10) is disclosed having a handle (15) containing a rechargeable battery (12), an ultrasonic drive circuit (14), a sonic component (16) such as a motor, and a control unit (18). The handle is connected to a toothbrush head (20) preferably having a plurality of bristles (26) and an ultrasonic transducer (22) that is operatively connected to a waveguide (24) that extends from the toothbrush head generally adjacent the bristles. The waveguide facilitates the transmission of acoustic energy into the dental fluid. It is contemplated that the waveguide may be utilized in manual or power toothbrushes, and in a combination without the sonic component, or in a combination without the ultrasonic transducer. Toothbrushes disclosed herein achieve improved plaque and stain removal from the teeth as well as interproximal and subgingival regions, while enhancing the user experience, massaging the gums, and stimulating dental tissue.

L'invention concerne une brosse à dents électrique (10) comprenant un manche (15) contenant une batterie rechargeable (12), un circuit d'excitation ultrasonore (14), un composant acoustique (16) tel qu'un moteur, ainsi qu'une unité de commande (18). Le manche est relié à une tête de brosse à dents (20) comprenant de préférence une pluralité de poils (26) et un transducteur ultrasonore (22) connecté fonctionnel à un guide d'ondes (24) s'étendant à partir de la tête de brosse à dents généralement au voisinage des poils. Le guide d'ondes facilite la transmission d'une énergie acoustique dans le liquide dentaire. Il est à noter que ce guide d'ondes peut être utilisé dans des brosses à dents manuelles ou électriques, et dans une combinaison sans le composant acoustique ou dans une combinaison sans le transducteur ultrasonore. Les brosses à dents de l'invention permettent de supprimer plus efficacement les taches et les plaques des dents et des zones interproximales et sous-gingivales tout en offrant un confort d'utilisation amélioré. Elles permettent en outre de masser les gencives et de stimuler le tissu dentaire.

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