Solenoid system for magnetically guided capsule endoscopy

A solenoid system for a magnetically guided capsule endoscopy, comprising the following components arranged under a patient table defining a flat plane:

• a central coil with a normal direction perpendicular to the flat plane;
• and
• four coil pairs, which are arranged around the central coil with respect to the flat plane, each coil pair comprising first and second single coils, each of the first and second coils having a normal direction oriented parallel to the flat plane, the normal direction of the first coil being offset by 90° with respect to the normal direction of the second coil, wherein
• the central coil has a rectangular shape defining four corners,
• the four coil pairs are formed respectively at the four corners of the central coil in a cross configuration,
• the cross configuration is formed by first and second imaginary lines, which each bisects the central coil,
• the first imaginary line extends from a first coil pair to a third coil pair, through first and third opposite corners of the central coil, and
• the second imaginary line extends from a second coil pair to a fourth coil pair, through second the fourth opposite corners of the central coil.