Method for using ligands in particle separation
First Claim
1. A method of separating particles, comprising:
- mixing a binding substance including first particles and ligands attached to the first particles with a liquid carrying at least second and third particles to form a mixture, at least some of the ligands binding with the second particles to form groups of bound particles including the first and second particles;
removing a portion of the binding substance from the mixture, the portion of the binding substance removed from the mixture including first particles having attached ligands lacking binding to the second particles;
rotating a fluid chamber about an axis of rotation;
flowing at least the liquid, third particles, and groups of bound particles into the fluid chamber;
separating in the fluid chamber the third particles and the groups of bound particles according to differences in sedimentation velocity; and
allowing at least the liquid and at least a portion of the third particles to flow from the fluid chamber.
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Accused Products
Abstract
A system and method are disclosed for separating particles having different sedimentation velocities. The system includes a container containing a binding substance including first particles and ligands attached to the first particles. When the binding substance is mixed with a liquid carrying at least second and third particles, the ligands bind the first and second particles together to form groups of bound particles. The groups of bound particles are separated from the third particles in a fluid chamber configured to be mounted on a centrifuge rotor. One of the disclosed methods includes forming a saturated fluidized bed of particles to retain the particles groups in the fluid chamber. Another of the disclosed methods includes removing at least some of the first particles after the binding substance is mixed with the liquid carrying second and third particles.
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Citations
56 Claims
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1. A method of separating particles, comprising:
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mixing a binding substance including first particles and ligands attached to the first particles with a liquid carrying at least second and third particles to form a mixture, at least some of the ligands binding with the second particles to form groups of bound particles including the first and second particles; removing a portion of the binding substance from the mixture, the portion of the binding substance removed from the mixture including first particles having attached ligands lacking binding to the second particles; rotating a fluid chamber about an axis of rotation; flowing at least the liquid, third particles, and groups of bound particles into the fluid chamber; separating in the fluid chamber the third particles and the groups of bound particles according to differences in sedimentation velocity; and allowing at least the liquid and at least a portion of the third particles to flow from the fluid chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A method of separating particles, comprising:
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mixing a binding substance including first particles and ligands attached to the first particles with a liquid carrying at least second and third particles to form a mixture, at least some of the ligands binding with the second particles to form groups of bound particles including the first and second particles; rotating a fluid chamber about an axis of rotation; flowing at least the liquid, third particles, and groups of bound particles into the fluid chamber; forming, in the fluid chamber, a saturated fluidized bed of particles, the saturated fluidized bed of particles retaining the groups of bound particles in the fluid chamber; and allowing at least the liquid and at least a portion of the third particles to flow from the fluid chamber. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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Specification