COIL ARRANGEMENT FOR GUIDING A MAGNETIC ELEMENT IN A WORKING SPACE

摘要

The invention relates to a coil arrangement for guiding, in a contactless manner, an endoscopic capsule equipped with a permanent magnet in order to diagnose or treat the inside of a patient. The coil arrangement comprises a plurality of individual coils which are arranged in pairs and by means of which the components of a magnetic field and at least four independent gradient fields of a symmetrical, traceless gradient matrix are generated. By arranging the individual coils according to the invention and controlling the same with the help of power amplifiers, the number of magnetic degrees of freedom required for examining the patient can be obtained with fewer individual coils and fewer power amplifiers.