Publication

Design and Actuation of a Multipole Ring Magnet for Navigating Endovascular Magnetic Instruments

2025

Abstract

This paper presents the design and analysis of a compact magnetic field generator for robotic navigation of magnetic endovascular instruments in clinical settings. The system features eight symmetrically arranged permanent magnets in a ring configuration, maximizing magnetic field uniformity and aperture size for X-ray transmission while minimizing spatial footprint and magnet motion for uninterrupted fluoroscopy imaging. The rationale behind the design of the system is explained through analytical considerations of magnetic field distribution. In vitro demonstrations inside perfused biomimetic phantoms confirm the system's capability for 3D steering of flow-driven magnetic microcatheters, opening a path for pre-clinical testing.

Official source

https://infoscience.epfl.ch/entities/publication/6dca0962-59a4-4e21-b3ae-bddcb8c34ad7

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2025

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/6dca0962-59a4-4e21-b3ae-bddcb8c34ad7

About this result

Related concepts (32)

Magnet

A magnet is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, steel, nickel, cobalt, etc. and attracts or repels other magnets. A permanent magnet is an object made from a material that is magnetized and creates its own persistent magnetic field. An everyday example is a refrigerator magnet used to hold notes on a refrigerator door.

Magnetic moment

In electromagnetism, the magnetic moment is the magnetic strength and orientation of a magnet or other object that produces a magnetic field. Examples of objects that have magnetic moments include loops of electric current (such as electromagnets), permanent magnets, elementary particles (such as electrons), composite particles (such as protons and neutrons), various molecules, and many astronomical objects (such as many planets, some moons, stars, etc).

Dipole magnet

A dipole magnet is the simplest type of magnet. It has two poles, one north and one south. Its magnetic field lines form simple closed loops which emerge from the north pole, re-enter at the south pole, then pass through the body of the magnet. The simplest example of a dipole magnet is a bar magnet. In particle accelerators, a dipole magnet is the electromagnet used to create a homogeneous magnetic field over some distance.

Related publications (32)

Design and Actuation of a Multipole Ring Magnet for Navigating Endovascular Magnetic Instruments

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