Blood diluting method and apparatus
First Claim
1. An apparatus for administering a diluent to a quantity of red blood cells contained in a transfusion blood container having an input port and an output port for transfusing a patient comprising:
- a flexible, squeezable diluent bag for containing a diluent for red blood cells;
means for providing a permanent fluid-tight connection between said diluent bag and said input port of said transfusion blood container in a fluid-tight manner; and
means forming a check valve means for preventing a back flow of fluid from said transfusion blood container to said diluent bag through said connecting means.
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Abstract
An apparatus for diluting packed red blood cells contained in a transfusion bag is provided comprising a flexible, squeezable diluent bag for containing a diluent for diluting the red blood cells in the transfusion bag. A tubular assembly with one or more fittings is provided for permanently attaching the diluent bag to an input port of the transfusion bag. The fittings are adapted for preventing a non-destructive, non-removable separation of the two bags. A uni-directional flow fluid valve means is provided for preventing reverse fluid flow from the transfusion bag to the diluent bag.
45 Citations
9 Claims
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1. An apparatus for administering a diluent to a quantity of red blood cells contained in a transfusion blood container having an input port and an output port for transfusing a patient comprising:
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a flexible, squeezable diluent bag for containing a diluent for red blood cells; means for providing a permanent fluid-tight connection between said diluent bag and said input port of said transfusion blood container in a fluid-tight manner; and means forming a check valve means for preventing a back flow of fluid from said transfusion blood container to said diluent bag through said connecting means. - View Dependent Claims (2)
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- 3. An apparatus for administering a diluent to a transfusion bag having at least one fitting receiving port comprising:
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4. a flexible, squeezable diluent bag for containing a diluent suitable for diluting the contents of the transfusion bag;
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a tubular member for transporting diluent from the diluent bag to the transfusion bag; a fitting located at one end of the tubular member for permanently connecting the diluent bag to the fitting receiving port of the transfusion bag in a fluid-tight manner; and one-way valve means for preventing reverse fluid flow from the transfusion bag to the diluent bag. - View Dependent Claims (6, 8, 9)
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7. A method of diluting the contents of a transfusion bag containing packed red blood cells comprising the steps of:
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permanently attaching to the transfusion bag a flexible, squeezable diluent bag containing a premeasured amount of diluent suitable for diluting the red blood cells in the transfusion bag; and transferring the contents of the diluent bag to the transfusion bag to dilute the red blood cells contained therein while preventing a back flow of fluid from said transfusion bag to said diluent bag.
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Specification