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:
Aug. 09, 1977
Filed:
Jun. 22, 1976
Irwin R Berman, New York, NY (US);
Ira M Nathan, Carmel, NY (US);
Other;
Abstract
A bag for the separation of components in blood by gravitational settlement or centrifugation, has an upper chamber and a lower chamber connected by a slender neck, there being access conduits to each of said chambers and said neck. The bag is so dimensioned that for blood having a normal hematocrit the interfaces between packed red cells and the buffy coat and between the buffy coat and the plasma will lie within the neck. The neck can then be clamped off or otherwise sealed to separate the phases sharply and to permit virtually 100% recovery of the plasma and the packed red cells. In a second embodiment, the buffy coat can be isolated and seals within the system opened to permit intermixing of the plasma and the packed red blood cells under completely sterile conditions. A special support makes it possible for the blood bag to be subjected without distortion to centrifugation.