US 11,786,894 B2
Whole blood separator device and method of use
Ashim Gupta, Lawrenceville, GA (US); and Charles Bradley Simons, Milton, GA (US)
Filed by Ashim Gupta, Lawrenceville, GA (US); and Charles Bradley Simons, Milton, GA (US)
Filed on Oct. 29, 2020, as Appl. No. 17/83,384.
Prior Publication US 2022/0134328 A1, May 5, 2022
Int. Cl. B01L 3/00 (2006.01); B04B 5/04 (2006.01)
CPC B01L 3/5021 (2013.01) [B04B 5/0414 (2013.01); B01L 2200/025 (2013.01); B01L 2200/0652 (2013.01); B01L 2200/0689 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A whole blood separator device comprises:
a sleeve, the sleeve having a sleeve body and having an enlarged first proximal end portion and an enlarged second distal end portion, the proximal end portion has an open end and the distal end portion has an open end each end portion tapers inwardly in a conical shape to an intermediate cylindrical tube portion connecting the first proximal end portion and the second distal end portion, the intermediate cylindrical tube portion has a diameter smaller than the distal and proximal end portions, the sleeve body has a liquid holding volume;
a test tube configured to receive the sleeve, wherein the combination of the test tube and the sleeve are configured hold a volume of whole blood and wherein the intermediate cylindrical tube portion holds around 20 percent of the whole blood volume and the distal and proximal end portions in combination with the test tube hold the remaining around 80 percent of the whole blood volume, wherein the whole blood volume is equal to or greater than the liquid holding volume of the sleeve; and
wherein the sleeve body is configured to fit inside the test tube and receive whole blood which can be separated by centrifugation into a plasma layer in the proximal end portion, a buffy coat layer in the intermediate cylindrical tube portion and a red blood cell portion in the distal portion.