The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 29, 1983
Filed:
May. 04, 1981
Edward L Nugent, North Caldwell, NJ (US);
Becton, Dickinson and Company, Paramus, NJ (US);
Abstract
A blood collection device for receiving whole blood adapted to be centrifuged into phases of lighter and heavier specific gravity includes a container with proximal and distal ends and a penetrable stopper at the proximal end. A separator assembly inside the container includes a receptacle with a thixotropic barrier material therein. An aperture in the receptacle faces toward the distal end of the container. The barrier material has a specific gravity intermediate the specific gravities of the lighter and heavier phases of blood and is adapted to flow under its own influence through the aperture during centrifugation. The barrier material then travels to a position intermediate the lighter and heavier phases of blood separated during centrifugation and adheres to the inside wall of the container to form a barrier.