Patent ID: 6539664
Filing Date: 2003-04-01
Classification: A01C,A01G,A01H,A61N,C12M,C12N

Abstract:
A device for the manipulation of a biological material by a magnetic field, comprising a magnetic field source coupled to a current source for producing said magnetic field, the device being characterized in that:the current source is of a kind supplying an electric current of at least two electrical degree shifted phases; the magnetic field source comprises a two-part inductor, each inductor part producing a coordinate varying magnetic field (CVMF), wherein each inductor part is formed by at least two conductors aligned in a spaced-apart relationship, each of the at least two conductors being connectable to a different phase of the current source, each of the at least two conductors having two spaced-apart parts arranged such that when the conductor is connected to the current source, the electric current will flow in its two parts in opposite directions, respectively, the conductor being arranged such that each two locally adjacent conductor parts are associated with two different phases of the electric current source; a distance between the two conductor parts coupled to the same phase of the current source defines a half-wavelength &lgr;/2 of a wave of magnetic induction of said CVMF, and is selected in accordance with a predetermined relation between the wavelength &lgr; and an effective space &Dgr; within the magnetic field region defined by the dimensions of the biological material and its distance from the magnetic field source.