Method for treating magnetic particles and biological analysis device using magnets
AssigneeBiomerieux
InventorBruno Colin
Life of this patent
Estimating the term…
Abstract
A method for treating magnetic particles present in a solution in a container by redispersion, rinsing or displacement, the particles having novel characteristics under the effect of a specific magnet and being associated or not with biological entities. The magnetic particles undergo at least one low-intensity magnetization where they are disposed in filaments oriented according to the north-south axis of the magnet; the magnetization source and/or container is/are displaced while the magnetic effect is maintained on the magnetic particles; the magnetization source and/or container is/are displaced or the magnetization is stopped, in order to suppress the magnetic field on the magnetic particles. Preferably, the invention can be used in the field of biology.
Claims10
A method for treating magnetic particles present in solution in a vessel, wherein the magnetic particles are capable of being associated with biological entities, the method comprising:
- a) subjecting the magnetic particles to a constant magnetic field in the form of magnetisation that is a function of T and D, wherein:
- the magnetisation is generated by a magnetisation source;
- T is a magnetic induction of the magnetisation source, expressed in milliTesla (mT),
- D is the distance separating the magnetisation source from the bottom of the vessel, expressed in millimeters (mm),
- wherein T is between 5 and 400mT and D is less than or equal to 50mm, and
- wherein the magnetisation disposes the magnetic particles in filaments that are oriented along the north-south axis of the magnetisation source,
- b) moving the magnetisation source or the vessel or both, while maintaining magnetisation on the magnetic particles, and
- c) suppressing magnetisation on the magnetic particles by moving the magnetisation source or the vessel or both, or by stopping the magnetisation source.
A method for treating magnetic particles present in solution in a vessel, wherein the magnetic particles are capable of being associated with biological entities, the method comprising:
- a) subjecting the magnetic particles to a constant magnetic field in the form of magnetisation that is a function of T and D, wherein:
- the magnetisation is generated by a magnetisation source;
- T is a magnetic induction of the magnetisation source, expressed in milliTesla (mT),
- D is the distance separating the magnetisation source from the bottom of the vessel, expressed in millimeters (mm),
- wherein T is less than 5 mT, and D is zero, and
- wherein the magnetisation disposes the magnetic particles in filaments that are oriented along the north-south axis of the magnetisation source,
- b) moving the magnetisation source or the vessel or both, while maintaining magnetisation on the magnetic particles, and
- c) suppressing magnetisation on the magnetic particles by moving the magnetisation source or the vessel or both, or by stopping the magnetisation source.
Dependencies are inferred from the claim text.