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    • 3. 发明申请
    • Toothbrush employing acoustic waveguide
    • 牙刷采用声波导
    • US20060191086A1
    • 2006-08-31
    • US11416852
    • 2006-05-03
    • Pierre MouradJames McInnesGeorge BarrettDavid BallardGerald BrewerFrederick Bennett
    • Pierre MouradJames McInnesGeorge BarrettDavid BallardGerald BrewerFrederick Bennett
    • A61C17/22
    • A46B15/0002A46B15/0028A46B2200/1066A61C17/20A61C17/3481
    • A power toothbrush (10) is disclosed having a handle (15), battery (12), ultrasonic drive circuit (14), motor (16), control unit (18), and toothbrush head (20). The toothbrush head includes bristles (26) and a waveguide (24) that is operatively connected to an ultrasonic transducer (22). The waveguide facilitates the transmission of acoustic energy into the dental fluid to achieve improved cleaning and stain removal and improved cleaning in interproximal and subgingival regions. In one embodiment an ultrasound transducer module (30) includes a plurality of piezoelectric elements (32, 34) that may be mechanically connected in series, and electrically connected in parallel. One or more contacts (36) connect the elements, and a waveguide structure (50). An impedance matching layer (38) may be provided between the waveguide and the ultrasonic transducer module. The waveguide may be formed from an relatively soft material, for example, a polymer having a hardness between 10 and 65 Shore A.
    • 公开了具有手柄(15),电池(12),超声波驱动电路(14),马达(16),控制单元(18)和牙刷头(20)的动力牙刷(10)。 牙刷头包括刷毛(26)和可操作地连接到超声换能器(22)的波导(24)。 波导有助于将声能传输到牙科液体中,以实现改善的清洁和污渍去除以及改善邻近和龈下区域的清洁。 在一个实施例中,超声换能器模块(30)包括多个压电元件(32,34),其可以串联机械连接并并联电连接。 一个或多个触点(36)连接元件和波导结构(50)。 可以在波导和超声换能器模块之间设置阻抗匹配层(38)。 波导可以由相对柔软的材料形成,例如硬度在10和65肖氏A之间的聚合物。