US 12,453,968 B2
Apparatus and methods for separating blood components
Randy Dorian, San Diego, CA (US); Michael D. Leach, Warsaw, IN (US); Richard W. Storrs, Berkeley, CA (US); and Scott R. King, New Orleans, LA (US)
Assigned to New Orleans, , LA (US)
Filed by Hanuman Pelican, Inc., New Orleans, LA (US)
Filed on May 13, 2024, as Appl. No. 18/662,480.
Application 17/929,626 is a division of application No. 16/454,525, filed on Jun. 27, 2019, granted, now 11,478,787, issued on Oct. 25, 2022.
Application 18/662,480 is a continuation of application No. 17/929,626, filed on Sep. 2, 2022, granted, now 12,017,211.
Claims priority of provisional application 62/695,631, filed on Jul. 9, 2018.
Prior Publication US 2024/0293809 A1, Sep. 5, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B01L 3/00 (2006.01); A61K 8/98 (2006.01); A61K 35/16 (2015.01); A61K 35/19 (2015.01); A61Q 7/00 (2006.01); A61Q 19/08 (2006.01); B01D 21/26 (2006.01); B04B 5/04 (2006.01)
CPC B01L 3/50215 (2013.01) [A61K 8/983 (2013.01); A61K 35/16 (2013.01); A61K 35/19 (2013.01); A61Q 7/00 (2013.01); A61Q 19/08 (2013.01); B01D 21/262 (2013.01); B01L 3/505 (2013.01); B01L 2300/042 (2013.01); B01L 2300/0832 (2013.01); B01L 2300/123 (2013.01); B01L 2300/16 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An apparatus for separating blood, comprising:
a tube defining a channel and configured for receiving a quantity of blood, wherein the channel is sealed at a proximal end of the tube by a septum; and
a float contained within the tube such that the float is vacuum sealed within the channel via the septum, the float having a density which is predefined between 1.0 to 1.1 gram/ml so that the float is maintained at equilibrium between a first layer formed from a first fractional component of the blood and a second layer formed from a second fractional component of the blood,
wherein the float further has a cylindrical body with a proximal portion of the float having an angled surface which is angled between about 2 to 45 degrees relative to a normal surface of the float such that the angled surface has a surface topography selected to retain a layer of red blood cells upon the angled surface of the float.