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Medical evacuation and irrigation device

  • US 5,034,000 A
  • Filed: 03/28/1989
  • Issued: 07/23/1991
  • Est. Priority Date: 03/28/1989
  • Status: Expired due to Term
First Claim
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1. An apparatus for the selective alternating of the passage of an irrigation liquid and an evacuation vacuum through a patient tube, comprising:

  • a valve body defining a passageway therethrough;

    a first conduit located at one end of said valve body extending from the exterior to the interior of said valve body;

    a second conduit located at the second end of said valve body extending from the exterior to the interior of said valve body;

    a third conduit located on said valve body between said first and said second conduits and extending from the exterior to the interior of said valve body;

    a fourth conduit located on said valve body between said first and said third conduits and extending from the exterior to the interior of said valve body;

    a fifth conduit located adjacent to said first conduit on said valve body such that said first conduit is located between said fifth and said fourth conduits and extending from the exterior to the interior of said valve body;

    a vent conduit extending from the exterior to the interior of said valve body;

    a valve located within said valve body containing a passageway therein, such that the passageway may be selectively positioned such that said second and third conduits can be connected while said first and fourth conduits are sealed from said passageway connecting said second and third conduits and said first and fourth conduit are sealed from each other or, alternatively, such that said first and fourth conduits can be connected while said second and third conduits are sealed from said first and fourth conduits and said second and third conduits are sealed from each other, comprising;

    a first seal to seal said fifth conduit, located between said first and said fifth conduits in the interior of said valve body to allow liquid to flow into said valve body through said fifth conduit but to prevent liquid from being forced out of said valve body through said fifth conduit;

    a second seal to seal the interior position of said valve body containing said first and fifth conduits from the remaining interior portions of said valve body when a vacuum is applied to said first conduit, but seals said first and fourth conduits from the remaining interior portions of said valve body when pressure is applied to said first conduit, said second seal being located between said first and said fourth conduits; and

    another valve for opening and closing a passageway between said second and said third conduits such that when said passageway between said second and third conduits is open, said first, fourth and fifth conduits are positively sealed from said second and aid third conduits, and said first conduit and said fourth conduit are sealed from each other, or alternatively, when the passageway between said second and third conduits is closed, said first and said fourth conduits are connected, while said second conduit and said third conduit are sealed from said first and said fourth conduit and said second conduit and said third conduit are sealed from each other.

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