Device for separating and recovering blood fractions
A device for separating and recovering blood fractions includes two conical chambers communicating via their bases, the first chamber having a duct for supplying the fluid to be treated and means for recovering at least one component, the second chamber comprising an elastically deformable flexible membrane that transversely separates a space opening into the duct for communicating with the second chamber, and a bag having a volume that varies according to the deformation of the membrane.
1 . A device for recovering components of blood from a blood sample, the device comprising:
a first conical chamber having a first end and a second end, the first end having a first cross sectional area and the second end having a second cross sectional area narrower than the first cross sectional area;
a second conical chamber having a third end and a fourth end, the third end having a third cross sectional area and the fourth end having a fourth cross sectional area wider than the third cross sectional area, the second end adjacent and facing the third end;
a fluid pathway extending from the second end to the third end;
a duct for introducing fluid into the first conical chamber;
a flexible membrane covering an opening at the fourth end and configured to adjust component levels by elastically deforming; and
a conduit comprising a valve within the conduit and configured to selectively recover at least one component of the blood from the fluid pathway.
2 . The device of claim 1 , wherein the valve comprises a float valve.
3 . The device of claim 1 , wherein the valve comprises a three-way valve and wherein the conduit further comprises an outlet nozzle.
4 . The device of claim 1 , further comprising a first float in the conduit and having a first predetermined density.
5 . The device of claim 4 , further comprising a second float in the conduit and having a second predetermined density.
6 . The device of claim 5 , wherein the first conical chamber further comprises a cover.
7 . A method of recovering one or more components from a blood sample using the device of claim 1 , the method comprising:
introducing the blood sample into the first conical chamber;
separating the one or more components from the blood sample by centrifuging the device with the introduced blood using a centrifuge; and
recovering the one or more blood components through the conduit by selectively actuating the valve.