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US 4,379,849 AGranted
Method and means for the examination of uncoagulated blood
OwnerKen Heimreidinventor
Life of this patent
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OwnerKen Heimreidinventor
Estimating the term…
A method to facilitate the analysis of uncoagulated blood, for example freshly drawn blood or heparin blood, wherein the blood is filled into a test tube of plastic and a porous, elastic body in which one or more ballast element optionally are embedded, is placed in the upper layer of the blood and the blood is centrifuged such that the body in friction contact with the inner surface of the test tube is pressed through the blood, wherein the body or bodies are of glass or another suitable material with a surface whose characteristics correspond to those of glass, and where in addition there is used an overlying layer of small beads or other particles whose specific gravity is adapted in such a way that the beads after the centrifugation are embedded in the fibrin layer as reinforcement, and further wherein the two features may be combined by utilzing only the described small beads. A means for carrying out the method is also described.
A method for facilitating the examination of uncoagulated blood comprising (1) filling the blood into a plastic test tube, (2) placing in the upper layer of the blood one or more bodies of glass or another suitable material with a surface whose characteristics correspond to glass, (3) placing above said one or more bodies an overlying layer of small beads or other suitable particles whose specific gravity is such that the small beads or other suitable particles become embedded as reinforcement in the fibrin layer following centrifugation and (4) centrifuging the blood while said body or bodies is in friction contact with the interior surface of the tube and pressing said body or bodies through the blood during said centrifugation.
In a device for separating of uncoagulated blood into components comprising in combination a test tube of plastic and a porous elastic body or bodies of glass or another suitable material having a surface whose characteristics correspond to those of glass and which is insertable into said test tube, the improvement comprising a plurality of small beads or other suitable particles insertable into said tube above said porous elastic body and having a specific gravity which is so adapted that the beads or other particles find themselves embedded as reinforcement in the fibrin layer when blood is centrifuged in the test tube.
Dependencies are inferred from the claim text.