Methods and systems for high-throughput blood component collection
Described are embodiments that include methods and devices for separating components from multi-component fluids. Embodiments may involve use of separation vessels and movement of components into and out of separation vessels through ports. Embodiments may involve the separation of plasma from whole blood. Also described are embodiments that include methods and devices for positioning portions, e.g., loops, of disposables in medical devices. Embodiments may involve use of surfaces for automatically guiding loops to position them into a predetermined position.
1. A method for collecting a blood component through apheresis, the method comprising:
determining a target volume of a first blood component;
drawing whole blood from a donor into a centrifuge, wherein the determining the target volume of the first blood component occurs prior to the drawing whole blood;
adding an anticoagulant into the whole blood from an anticoagulant source;
spinning the centrifuge at a first speed to separate the whole blood into the first blood component and a second blood component;
directing the first blood component into a container;
returning at least the second blood component from the centrifuge and back into the donor for a first return period; and
determining a collected volume of the first blood component in the container, and if the collected volume equals the target volume of the first blood component, reinitiating the returning at least the second blood component from the centrifuge and back into the donor for a second return period that further comprises delivering saline with the second blood component to the donor.
2. The method of claim 1 , wherein the spinning further comprises increasing a rotational speed of the centrifuge from the first speed to a second speed to further separate the whole blood into the first blood component and the second blood component.
3. The method of claim 1 , wherein the first blood component predominantly includes plasma and the second blood component includes at least one of red blood cells or platelets.
4. The method of claim 1 , wherein the centrifuge continues to spin at the first speed during the returning the at least the second blood component from the centrifuge and back into the donor and the centrifuge has a second speed during the drawing whole blood from the donor into the centrifuge, wherein the second speed is less than the first speed.
5. The method of claim 1 , wherein the spinning is continuous and occurs concurrently with: (i) at least one of the directing the first blood component into the container and the returning the at least the second blood component from the centrifuge and back into the donor; and/or (ii) at least one of the drawing the whole blood from the donor into the centrifuge and the returning the at least the second blood component from the centrifuge and back into the donor.
6. The method of claim 1 , wherein the drawing the whole blood from the donor into the centrifuge occurs concurrently with the spinning the centrifuge to separate the whole blood into the first blood component and the second blood component and drives the first blood component into the container.
7. The method of claim 1 , further comprising directing a portion of the first blood component in the container back through the centrifuge to facilitate the returning of the second blood component from the centrifuge and back into the donor.
8. The method of claim 1 , wherein the returning the at least the second blood component occurs directly from the centrifuge and back into the donor.
9. A method for collecting a blood component through apheresis, the method comprising:
determining a target volume of a first blood component;
drawing whole blood from a donor into a centrifuge;
adding an anticoagulant into the whole blood from an anticoagulant source;
spinning the centrifuge at a first speed to separate the whole blood into the first blood component and a second blood component;
directing the first blood component into a container; and
returning at least the second blood component directly from the centrifuge and back into the donor.
10. The method of claim 9 , wherein the determining the target volume of the first blood component occurs prior to the drawing whole blood.
11. The method of claim 9 , wherein the spinning further comprises increasing a rotational speed of the centrifuge from the first speed to a second speed to further separate the whole blood into the first blood component and the second blood component.
12. The method of claim 9 , wherein the first blood component predominantly includes plasma and the second blood component includes at least one of red blood cells or platelets.
13. The method of claim 9 , wherein the centrifuge continues to spin at the first speed during the returning the at least the second blood component directly from the centrifuge and back into the donor and the centrifuge has a second speed during the drawing whole blood from the donor into the centrifuge, wherein the second speed is less than the first speed.
14. The method of claim 9 , wherein the spinning is continuous and occurs concurrently with: (i) at least one of the directing the first blood component into the container and the returning the at least the second blood component directly from the centrifuge and back into the donor; and/or (ii) at least one of the drawing the whole blood from the donor into the centrifuge and the returning the at least the second blood component directly from the centrifuge and back into the donor.
15. The method of claim 9 , wherein the drawing the whole blood from the donor into the centrifuge occurs concurrently with the spinning the centrifuge to separate the whole blood into the first blood component and the second blood component and drives the first blood component into the container.
16. The method of claim 9 , further comprising directing a portion of the first blood component in the container back through the centrifuge to facilitate the returning of the second blood component directly from the centrifuge and back into the donor.
17. The method of claim 9 , wherein the returning occurs for a first return period and the method further comprises determining that a collected volume of the first blood component is in the container, and if the collected volume equals the target volume of the first blood component, reinitiating the returning for a second return period that further comprises delivering saline with the second blood component to the donor.
18. The method of claim 9 , further comprising after the directing the first blood component into the container, determining whether a collected volume of the first blood component in the container equals the target volume.
19. The method of claim 18 , wherein the returning occurs for a first return period and if the determining whether the collected volume of the first blood component in the container equals the target volume results in the collected volume equaling the target volume of the first blood component, reinitiating the returning for a second return period that further comprises delivering saline with the second blood component to the donor.