Magnetic navigation techniques (MNT) is one of the main development directions of magnetic surgery (magnetic surgery), which uses the magnetic navigation surgical platform for magnetic field positioning, guides the direction of travel of the interventional catheter through the auxiliary control of the computer, and realizes the purpose of diagnosis and treatment by pushing the catheter to reach the target position through the automatic pusher. 

In magnetic navigation, the three-dimensional orientation information of the interventional surgical instruments can be acquired and updated in real time, while the three-dimensional magnetic resonance image of the patient can be continuously obtained during the entire surgical process.

Magnetic navigation technology in cardiovascular interventions

Magnetic navigation technology can realize the catheter's rapid travel and precise positioning in blood vessels with any degree of curvature. It uses the magnetic navigation system to establish a three-dimensional model of the heart, which is fused with the X-ray image, and then, through the operation of the mouse and keyboard of the magnetic navigation computer in the control room, the rotating magnets controlled by the computer can precisely manipulate the catheter (which can reach the precision of movement of 1mm and 1 degree), and accurately arrive at the part of the heart where the abnormal electrical activities are to issue radiofrequency Current ablation is performed to complete the procedure.

Magnetic navigation technology in the digestive tract

The application of magnetic navigation technology in the digestive tract is mainly reflected in the nasojejunal nutrition tube placement and magnetic capsule endoscopy. Naso-jejunal nutritional tube placement is the use of magnetic navigation to the naso-jejunal nutritional tube into the intestines, to provide nutritional support for the loss of consciousness of critically ill patients. 

Magnetic capsule endoscopy is the installation of permanent magnets in the capsule endoscopy, through the external magnetic field can be actively controlled, thus solving the shortcomings of the capsule endoscopy can not move on its own, to complete the detection of the patient's intestines.

Magnetic navigation technology in the respiratory tract

Electromagnetic navigation bronchoscopy, as one of the representative applications of magnetic navigation technology in the respiratory tract, closely combines magnetic navigation technology, bronchoscopy and three-dimensional reconstruction technology, and utilizes an extracorporeal magnetic field localization plate to guide the airway probes to locate, biopsy, and treat target lesions in the lungs.

Magnetic navigation technology in neurosurgery

Magnetic navigation systems are used in neurosurgery to achieve precise localization of intracranial tumors, thereby reducing surgical trauma.In 1989, Howard et al. established the first multi-coil electromagnetic system for stereotactic navigation within the brain. The system has six orthogonal magnet coils that generate a magnetic field of sufficient strength to drive a magnetic catheter through the blood vessels. 

The system also features a stereotactic navigation interface, where an extracorporeal magnetic field controls a permanent magnet-mounted catheter to reach the location of the cerebral vascular lesion under real-time fluoroscopic monitoring by magnetic resonance.