| Magnetic navigation technology is a contactless control technology that can be used in a variety of in vivo medical operations to manipulate the movement of objects through changes in magnetic fields.In this paper,the core technology of magnetic navigation,magnetic field manipulation,is investigated,and a technical solution and functional implementation are proposed.First,this paper investigates the principle of magnetic field generation for magnetic field manipulation,introduces the theoretical basis for the design of the magnetic field generation system,and analyzes the operation of magnetic navigation systems with different structures,thus giving a design solution applicable to the actual device manufacturing.Secondly,this paper introduces and analyzes the working principle of the magnetic catheter,a controlled device in in vivo interventional procedures,and presents a design scheme for optimizing the catheter deflection performance in conjunction with the existing catheter design,and verifies the feasibility of the optimized scheme through simulation and experiments.Finally,this paper investigates a new method of magnetic field manipulation technique for particle control.In general,this technique can be used for the transport of magnetic particles,but it can also be applied to the transport of anti-magnetic particles in specific cases.This paper investigates the Magneto-Archimedes effect,analyzes the principle of using this effect to apply the magnetic navigation technique to antimagnetic particle transport,and designs experiments to verify it,which further enhances the practicality of the magnetic field manipulation system. |