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Blood-spinning is a medical procedure used to shorten the healing time of an injury. Small samples of the patient's blood are taken and spun in a centrifuge , allowing platelets and blood serum to be isolated from other blood components.
The machine works by spinning a unit of blood in its centrifuge with various concentrations of saline solution.The machine spins the red cells in a circular bag and then uses a hydraulic system to express out saline, plasma, glycerol used in the freezing process, and unwanted plasma proteins.
The subsequent development of the machine as the IBM 2997, essentially a continuous centrifuge which separated the blood into red blood cells, white blood cells, and blood plasma (used in plasmapheresis), was picked up by IBM's Systems Supplies Division (SSD) which was already ready marketing the IBM 2991 Blood cell Processor.
Continuous flow centrifugation (CFC) historically required two venipunctures as "continuous" means the blood is collected, spun, and returned simultaneously. Newer systems can use a single venipuncture by pooling blood in a vessel and cycling through drawing and returning blood though the needle while the centrifuge continuously processes blood remaining in the vessel. [5]
Typically, a 300 ml batch of blood is removed at a time and centrifuged to separate plasma from blood cells. Continuous flow centrifugation: Two venous lines are used. This method requires slightly less blood volume out of the body at any one time, as it is able to continuously spin out plasma. Plasma filtration: Two venous lines are used.
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The 20 g centrifuge at the NASA Ames Research Center. High-g training is done by aviators and astronauts who are subject to high levels of acceleration ('g'). It is designed to prevent a g-induced loss of consciousness (g-LOC), a situation when the action of g-forces moves the blood away from the brain to the extent that consciousness is lost.