DEVICE FOR CONTROLLING THE MOVEMENT OF A FOREIGN BODY INSIDE THE PATIENT BY EXTERNAL MAGNETIC FIELD

摘要

FIELD: medicine.;SUBSTANCE: invention relates to medical technology, in particular to means of wireless control of the movement of a foreign body in the body of a subject. Device for controlling the movement of an object having a magnetization in the body of the subject includes at least eight stationary electromagnetic coils with cores, which, when energized, generate components of the electromagnetic field and the components of the magnetic field gradients to specify the desired direction of movement of the object in the workspace and the required force applied to the object, at least one control unit that provides a synchronous supply of electric current to each of said coils independently of each other, the inner ends of the coils border on the working area, forming a through passage to accommodate the patient, the coils are divided into three groups, one of which is central, and the other two are extreme, with the centres of the coils of the central group arranged around the circumference around the body of the subject in such a way that their axes are perpendicular to the longitudinal axis of the through passage and directed towards the centre of the working area, and the coils of the two extreme groups are placed as close as possible to the coils of the central group in such a way that their axes are at an angle to the longitudinal axis of the through passage and are directed to the centre of the working area.;EFFECT: use of the invention makes it possible to simultaneously reduce the weight and size characteristics of the magnetic system and the need for energy for its operation.;6 cl, 1 tbl, 3 dwg