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Hand held oral irrigator

  • US 7,147,468 B2
  • Filed: 12/30/2003
  • Issued: 12/12/2006
  • Est. Priority Date: 12/31/2002
  • Status: Active Grant
First Claim
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1. A hand held oral irrigation device for irrigating an oral cavity with a fluid, the device comprising:

  • a reservoir for storing the fluid;

    a body; and

    an elongated nozzle;

    whereinthe reservoir comprises;

    a shelf portion defined about a bottom portion of the reservoir; and

    a base at a bottom end of the reservoir;

    a reservoir inlet conduit positioned along the base of the reservoir so that fluid is drawn from the bottom of the reservoir;

    a fluid access valve fluidly coupling with said inlet conduit, the fluid access valve comprising;

    a channel defined within the reservoir extending from the shelf to the base, said channel receiving said inlet conduit and fluidly coupled thereto;

    a seal positioned about a top end of the channel;

    a spring extending upwardly from the base within the reservoir; and

    a ball positioned within the channel between said seal and said spring;

    wherein the reservoir defines a first major diameter at a lower end of the oral irrigation device and the body and reservoir combine to define a second major diameter at an upper end of the oral irrigation device, the first major diameter being larger than the second major diameter.

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