Device for electromagnetically bearing and driving a tiltable part of a gantry of a computer tomography apparatus, and a computer tomography apparatus embodying same

摘要

A device for mounting and driving a tiltable part of a gantry of a computed tomography system with respect to a pedestal of the gantry around a system axis of the pedestal, has a magnetic bearing that magnetically supports the tiltable part relative to the pedestal, and an electromagnetic drive that electromagnetically tilts the tiltable part of the gantry relative to the pedestal.

主权项

1. A device to support and tilt a gantry of a computed tomography apparatus relative to a pedestal, said device comprising:
a first gantry part and a second gantry part, said first gantry part being rotationally mounted in said second gantry part so as to rotate in a plane in said second gantry part, around a system axis that proceeds perpendicularly through said plane; a tilt axle comprising a first tilt axle part attached at opposite ends thereof to opposite sides of said second gantry part, said tilt axle further comprising a second tilt axle part that annularly surrounds said first tilt axle part with a separation therebetween, and that is attached to said pedestal; a magnetic bearing configured to magnetically support said second tilt axle part relative to said first tilt axle part, and thereby also support said second gantry part relative to said pedestal; and an electromagnetic drive configured to electromagnetically tilt said second gantry part, and thus also said first gantry part and said plane, relative to said pedestal of said gantry around a tilt axis that proceeds through said tilt axle and that proceeds perpendicularly to said system axis.