Means for reducing tissue thromboplastin in collected blood
AssigneeBaxter Travenol Laboratories, Inc.
InventorsUlrich C. Geissler, William J. Stith
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Abstract
A closed blood collection system is provided which reduces the amount of tissue thromboplastin that is mixed with the collected blood. The system includes a secondary blood receptacle for collecting an initial volume of blood, up to 5 ml, prior to collection of the remainder of the blood in a main container with anti-coagulant. Means are provided for directing the initial volume of blood into the secondary blood receptacle and for directing the blood subsequently collected into the main blood container.
Claims4
In a blood collection system including a phlebotomy needle, a main blood container and tubing for coupling the needle to the main container, the improvement comprising:
- a secondary blood container for collecting an initial volume of blood prior to collection of the blood in the main blood container, said secondary blood container comprising a blood receptacle concentrically positioned about said tubing, said tubing being open within said receptacle during flow of said initial volume whereby said initial volume will flow to said receptacle;
- and means for collecting said initial volume in said secondary container and thereafter channeling flow of the blood into said main blood container.
Dependencies are inferred from the claim text.