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Autotransfusion unit with vacuum regulation and cardiotomy reservoir

  • US 5,087,250 A
  • Filed: 02/16/1990
  • Issued: 02/11/1992
  • Est. Priority Date: 07/26/1988
  • Status: Expired due to Term
First Claim
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1. A cardiotomy and body drainage-autotransfusion unit comprising a non-collapsible top and bottom joined by non-collapsible side walls which define at least one reservoir which receives body fluids directly within the walls comprising:

  • a plurality of ports within said unit including at least one drainage inlet port connected to said at least one body fluid reservoir to which a tube can be connected for receipt of draining fluids from the body of a patient, or for receipt of fluids for cardiotomy functions;

    at least one outlet port connected to said unit which is in communication with said at least one body fluid reservoir for connection to a pump for the withdrawal of fluids from said at least one body fluid reservoir and delivery back to a patient in order to provide autotransfusion, or to a drain;

    a vacuum regulating system within said non-collapsible unit occupying at least one of said at least one reservoir and including a vacuum regulating chamber and a liquid seal chamber;

    at least one inlet port in communication with said liquid seal chamber and said vacuum regulating chamber for connection to a vacuum wherein said liquid seal chamber and said vacuum regulating chamber can be filled with liquid to a given level and, upon application of a vacuum, provide a controlled vacuum within said at least one body fluid reservoir for removal of body fluids from a patient under a controlled vacuum;

    filtration means interposed between said inlet to said at least one body fluid reservoir and said outlet from said unit for filtration of body fluids received within said at least one body fluid reservoir;

    an elongated conduit within said liquid seal chamber;

    connection means connected to said elongated conduit;

    a through port with connection means in communication with said body fluid reservoir adapted for connection to said connection means on said elongated conduit within said liquid seal chamber;

    connection means in communication with said liquid seal chamber and said vacuum regulation chamber for applying a vacuum thereto; and

    ,a baffle between said vacuum regulating chamber and said liquid seal chamber having an opening to allow a vacuum to be applied simultaneously to said vacuum regulating chamber and said liquid seal chamber.

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