LIQUID SAMPLE COLLECTION TUBE

1397162 Container for blood fraction P OHRINGER 24 Aug 1973 [18 Sept 1972] 40254/73 Heading G1B [Also in Division B 1] A collection container for isolating a liquid sample, for example blood serum or plasma, from a cylindrical specimen container comprises elongated cylindrical tube 10 having an aperture at one end, annular disc means 13 formed radially about the aperture for slidably engaging the internal cylindrical wall of the specimen container 10 and capable of flexure towards and away from the tube abutment means 14 formed on the tube adjacent to disc means 13 as shown for engaging and supporting at least a portion of the annular disc means on flexure towards tube 10, i.e. on insertion of the tube into specimen container 20, and fluid resistance means such as foam plastics filter 15 disposed in the aperture to limit fluidflow from the tube. In use, on retraction of tube 10, disc means 13 deflects, Fig. 4, allowing air to flow into the container. Tube 10, which may have graduation marks, has an opening (18), Fig. 2 (not shown) in its upper portion and a cap may be provided which covers this opening. A cap for the lower end of the device may also serve as a stand Fig. 7 (not shown).