FIELD: medicine.
SUBSTANCE: group of inventions refers to a device and a method for controlling a catheter displacement through an object and for localising the catheter in the object. The catheter comprises a magnetic element on its tip or nearby. The device comprises a selection unit, an excitation unit, a receiving unit, a control unit, and a processing unit. The selection unit comprises a selection field signal generation unit, as well as selection field excitation elements or selection field excitation coils for generating a magnetic selection field having a space diagram of a magnetic field intensity, whereat the first sub-zone having low magnetic field intensity, as well as the second sub-zone having the higher magnetic field intensity is formed. The excitation unit comprises the excitation field signal generation unit, as well as the excitation field excitation coils for changing the spatial position of the two sub-zones in the visual field by the magnetic excitation field so that the intensity of magnetism of the magnetic material is locally changed in the visual field. The receiving unit comprises a signal receiver, as well as a receiving coil for the detection signal collection; the detection signals depend on the intensity of magnetism in the visual field; the intensity of magnetism is exposed to changing the spatial position of the first and second sub-zones.
EFFECT: using the invention provides the faster displacement of the catheter inside the object with lesser displacement errors and higher accuracy.
10 cl, 5 dwg
