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Fluid sample collection and delivery system and methods particularly adapted for body fluid sampling

  • US 5,380,665 A
  • Filed: 01/27/1993
  • Issued: 01/10/1995
  • Est. Priority Date: 03/27/1989
  • Status: Expired due to Fees
First Claim
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1. A system for transporting a blood sample directly from a patient'"'"'s body to test equipment capable of analyzing a blood sample, comprising:

  • an intervascular means for selectively drawing a blood sample from a patient'"'"'s body;

    a fluid conduit having a first and a second end and an intermediate portion, said first end coupled to said intervascular means for receiving said blood sample therein and said intermediate portion of said fluid conduit including at least first and second input ports;

    a source of blood miscible fluid;

    a source of blood immiscible fluid;

    a first tube arrangement coupling said source of blood miscible fluid to said first input port;

    a second tube arrangement with an inputting means for selectively introducing blood immiscible fluid into said second input port;

    a transportable cassette assembly, wherein said second end of the fluid conduit extends into the cassette, said first tube arrangement extending from said source of blood miscible fluid through said transportable cassette assembly and to said first input port, and said second tube arrangement extending from said source of blood immiscible fluid through said transportable cassette assembly and to said second input port;

    a controlling means selectively attachable to said cassette assembly for selectively controlling the introduction of said blood sample, said immiscible fluid and said miscible fluid into said fluid conduit, thereby allowing any juxtapositional sequence of blood, immiscible fluid and miscible fluid to be produced within said fluid conduit;

    a pump selectively attachable to said cassette assembly, wherein said pump engages said first tube arrangement and said fluid conduit within said cassette assembly, said pump pumping the sequence of fluids through said fluid conduit at a first flow rate and pumping said miscible fluid through said first tube arrangement at a second flow rate, wherein said first and second flow rates are controlled by said controlling means; and

    a mechanical directing means attached through said cassette assembly to said second end of the fluid conduit for directing the position of the second end relative test equipment whereby only a selected sample of blood in said sequence of fluids is received by the test equipment.

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