Patent ID: 8475363
Filing Date: 2013-07-02
Classification: A61B

Abstract:
1. A coil arrangement comprising: multiple individual coils configured to generate a guide field in a workspace defined by a Cartesian coordinate system, said guide field being selected from the group consisting of a magnetic field formed by three individual field components respectively in the directions of said Cartesian coordinate system, and at least four independent gradient fields of a gradient matrix, said guide field being configured to guide a magnetic element therein in said workspace; said multiple independent coils comprising a plurality of first individual coils, a plurality of second individual coils, and a plurality of third individual coils; said plurality of first individual coils being arranged in series along a circumferential direction of a surface shell of an imaginary cylinder having a longitudinal cylinder axis extending along the Z-direction of said Cartesian coordinate system; said plurality of second individual coils being arranged at two opposite ends of said cylinder; and said plurality of third individual coils each having a cross-section with the cross-sections of the respective third individual coils being oriented as blades perpendicular to said longitudinal cylinder axis and projecting from an exterior of said imaginary cylinder.