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AssigneeCommissariat a l'Energie Atomique
InventorCharles E. Sachs
Estimating the term…
Blood is withdrawn from a patient for ultimate centrifuging into plasma and erythrocytes by mounting a supple substantially non-extensible under conditions of use thermosealable walled container in a carrier, the container having a top provided with an orifice closed by a rubber washer. A needle is mounted in a hollow cap sized to receive the carrier. The needle is inserted in the vein by pressing the carrier into the cap which also causes the needle to perforate the washer. A vacuum is drawn on the carrier drawing blood into the container, the container having a medial restriction dividing the container into two equal chambers. After filling, the container is withdrawn from the cap before removal of the needle from the vein and the container is mounted in a second carrier which is closed by the cap. The blood is then centrifuged, the plasma collects in the chamber above the restriction and the erythrocytes collects in the chamber below the restriction. The container is then separated at the restriction and the separated chambers sealed on separation.
Apparatus for the sampling of blood and the separation of plasma under anaerobic conditions comprising a transparent supple substantially non-extensible under conditions of use thermosealable walled container which can be inflated or flattened if under exterior vacuum or pressure, two separate substantially equal chambers in said container, a restriction connecting said two chambers, an open end for said container, a rigid top connected to said container at said open end, a central orifice in said top, an elastic washer closing said top mounted across said orifice, a screw thread on the external face of said top, a rigid container carrying tube, a bottom and an open end for said tube, a second orifice in the open end of said tube receiving said top, a screw thread in said second orifice receiving the screw thread of said top to mount said supple substantially non-extensible thermosealable walled container in said tube, and an opening in said tube adapted to communicate with a source of vacuum.
Dependencies are inferred from the claim text.