Apparatus for transfer of biological fluids
First Claim
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1. An apparatus for undiluted aspirating and dispensing of liquids, comprising:
- a conduit system including an aspiration path and a dispense path, said aspiration path including a portion of said dispense path;
means for cleaning and drying said aspiration and dispense paths prior to aspiration of said liquid;
aspirating means for undiluted aspirating said liquid from a sample vessel into and along said aspiration path including said dispense path portion of said aspiration path, said paths being cleaned and dried prior to said aspiration of said liquid;
dispensing means for undiluted dispensing said liquid along and out of said portion of said dispense path and into at least one receiving vessel; and
gaseous pushing means intersecting said dispense path at one end thereof and for generating a gaseous interface at said dispense end and pushing said liquid in front of said gaseous interface along and out of said dispense path and into said at least one receiving vessel.
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Abstract
An apparatus and method is disclosed for transferring biological fluids such as blood and serum from closed containers to multiple receiving containers. The disclosed methods and apparatus perform the transfer of an accurate and precise amount of biological liquid without dilution of the biological liquid, and without splattering of the biological liquid on the walls of the receiving container. Furthermore, the method discloses how to obtain equal concentrations of white blood cells in multiple receiving containers characteristic of their concentration in the sealed container.
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Citations
19 Claims
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1. An apparatus for undiluted aspirating and dispensing of liquids, comprising:
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a conduit system including an aspiration path and a dispense path, said aspiration path including a portion of said dispense path; means for cleaning and drying said aspiration and dispense paths prior to aspiration of said liquid; aspirating means for undiluted aspirating said liquid from a sample vessel into and along said aspiration path including said dispense path portion of said aspiration path, said paths being cleaned and dried prior to said aspiration of said liquid; dispensing means for undiluted dispensing said liquid along and out of said portion of said dispense path and into at least one receiving vessel; and gaseous pushing means intersecting said dispense path at one end thereof and for generating a gaseous interface at said dispense end and pushing said liquid in front of said gaseous interface along and out of said dispense path and into said at least one receiving vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. Apparatus for undiluted aspirating and dispensing of liquids, comprising:
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a conduit system including an aspiration path and a dispense path, said aspiration path including a portion of said dispense path; aspirating means for aspirating of liquid from a sample vessel into and along said aspiration path including said dispense path portion of said aspiration path; dispensing means for dispensing said liquid along and out of said portion of said dispense path and into at least one receiving vessel; and contamination prevention means for insuring that no contamination including dilution occurs within said fluid conduit paths including cleaning/drying means for cleaning and drying said fluid conduit paths prior to aspiration of said liquid and means for moving said liquid along the dispensing path without contamination or dilution. - View Dependent Claims (16, 17, 18, 19)
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Specification